diff options
| author | Kamil Trzcinski <ayufan@ayufan.eu> | 2016-12-18 23:39:51 +0100 |
|---|---|---|
| committer | Kamil Trzcinski <ayufan@ayufan.eu> | 2016-12-18 23:39:51 +0100 |
| commit | 14d47884dff6844625c2e65b247fd773d78f5ea2 (patch) | |
| tree | 10fba027e61521df236fd6eec7ba829c5fe2c8ec /vendor | |
| parent | 9fd775def2d89500cf291fe675458b68ead7cd2c (diff) | |
| parent | 546fa165ff728bc2d25ed9b55b95dd1d48139d4a (diff) | |
| download | gitlab-ce-14d47884dff6844625c2e65b247fd773d78f5ea2.tar.gz | |
Merge remote-tracking branch 'origin/master' into dockerfile-templatesdockerfile-templates
Diffstat (limited to 'vendor')
87 files changed, 17726 insertions, 9414 deletions
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+/*! + * @overview es6-promise - a tiny implementation of Promises/A+. + * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald) + * @license Licensed under MIT license + * See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE + * @version 4.0.5 + */ + +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global.ES6Promise = factory()); +}(this, (function () { 'use strict'; + +function objectOrFunction(x) { + return typeof x === 'function' || typeof x === 'object' && x !== null; +} + +function isFunction(x) { + return typeof x === 'function'; +} + +var _isArray = undefined; +if (!Array.isArray) { + _isArray = function (x) { + return Object.prototype.toString.call(x) === '[object Array]'; + }; +} else { + _isArray = Array.isArray; +} + +var isArray = _isArray; + +var len = 0; +var vertxNext = undefined; +var customSchedulerFn = undefined; + +var asap = function asap(callback, arg) { + queue[len] = callback; + queue[len + 1] = arg; + len += 2; + if (len === 2) { + // If len is 2, that means that we need to schedule an async flush. + // If additional callbacks are queued before the queue is flushed, they + // will be processed by this flush that we are scheduling. + if (customSchedulerFn) { + customSchedulerFn(flush); + } else { + scheduleFlush(); + } + } +}; + +function setScheduler(scheduleFn) { + customSchedulerFn = scheduleFn; +} + +function setAsap(asapFn) { + asap = asapFn; +} + +var browserWindow = typeof window !== 'undefined' ? window : undefined; +var browserGlobal = browserWindow || {}; +var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver; +var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]'; + +// test for web worker but not in IE10 +var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined'; + +// node +function useNextTick() { + // node version 0.10.x displays a deprecation warning when nextTick is used recursively + // see https://github.com/cujojs/when/issues/410 for details + return function () { + return process.nextTick(flush); + }; +} + +// vertx +function useVertxTimer() { + if (typeof vertxNext !== 'undefined') { + return function () { + vertxNext(flush); + }; + } + + return useSetTimeout(); +} + +function useMutationObserver() { + var iterations = 0; + var observer = new BrowserMutationObserver(flush); + var node = document.createTextNode(''); + observer.observe(node, { characterData: true }); + + return function () { + node.data = iterations = ++iterations % 2; + }; +} + +// web worker +function useMessageChannel() { + var channel = new MessageChannel(); + channel.port1.onmessage = flush; + return function () { + return channel.port2.postMessage(0); + }; +} + +function useSetTimeout() { + // Store setTimeout reference so es6-promise will be unaffected by + // other code modifying setTimeout (like sinon.useFakeTimers()) + var globalSetTimeout = setTimeout; + return function () { + return globalSetTimeout(flush, 1); + }; +} + +var queue = new Array(1000); +function flush() { + for (var i = 0; i < len; i += 2) { + var callback = queue[i]; + var arg = queue[i + 1]; + + callback(arg); + + queue[i] = undefined; + queue[i + 1] = undefined; + } + + len = 0; +} + +function attemptVertx() { + try { + var r = require; + var vertx = r('vertx'); + vertxNext = vertx.runOnLoop || vertx.runOnContext; + return useVertxTimer(); + } catch (e) { + return useSetTimeout(); + } +} + +var scheduleFlush = undefined; +// Decide what async method to use to triggering processing of queued callbacks: +if (isNode) { + scheduleFlush = useNextTick(); +} else if (BrowserMutationObserver) { + scheduleFlush = useMutationObserver(); +} else if (isWorker) { + scheduleFlush = useMessageChannel(); +} else if (browserWindow === undefined && typeof require === 'function') { + scheduleFlush = attemptVertx(); +} else { + scheduleFlush = useSetTimeout(); +} + +function then(onFulfillment, onRejection) { + var _arguments = arguments; + + var parent = this; + + var child = new this.constructor(noop); + + if (child[PROMISE_ID] === undefined) { + makePromise(child); + } + + var _state = parent._state; + + if (_state) { + (function () { + var callback = _arguments[_state - 1]; + asap(function () { + return invokeCallback(_state, child, callback, parent._result); + }); + })(); + } else { + subscribe(parent, child, onFulfillment, onRejection); + } + + return child; +} + +/** + `Promise.resolve` returns a promise that will become resolved with the + passed `value`. It is shorthand for the following: + + ```javascript + let promise = new Promise(function(resolve, reject){ + resolve(1); + }); + + promise.then(function(value){ + // value === 1 + }); + ``` + + Instead of writing the above, your code now simply becomes the following: + + ```javascript + let promise = Promise.resolve(1); + + promise.then(function(value){ + // value === 1 + }); + ``` + + @method resolve + @static + @param {Any} value value that the returned promise will be resolved with + Useful for tooling. + @return {Promise} a promise that will become fulfilled with the given + `value` +*/ +function resolve(object) { + /*jshint validthis:true */ + var Constructor = this; + + if (object && typeof object === 'object' && object.constructor === Constructor) { + return object; + } + + var promise = new Constructor(noop); + _resolve(promise, object); + return promise; +} + +var PROMISE_ID = Math.random().toString(36).substring(16); + +function noop() {} + +var PENDING = void 0; +var FULFILLED = 1; +var REJECTED = 2; + +var GET_THEN_ERROR = new ErrorObject(); + +function selfFulfillment() { + return new TypeError("You cannot resolve a promise with itself"); +} + +function cannotReturnOwn() { + return new TypeError('A promises callback cannot return that same promise.'); +} + +function getThen(promise) { + try { + return promise.then; + } catch (error) { + GET_THEN_ERROR.error = error; + return GET_THEN_ERROR; + } +} + +function tryThen(then, value, fulfillmentHandler, rejectionHandler) { + try { + then.call(value, fulfillmentHandler, rejectionHandler); + } catch (e) { + return e; + } +} + +function handleForeignThenable(promise, thenable, then) { + asap(function (promise) { + var sealed = false; + var error = tryThen(then, thenable, function (value) { + if (sealed) { + return; + } + sealed = true; + if (thenable !== value) { + _resolve(promise, value); + } else { + fulfill(promise, value); + } + }, function (reason) { + if (sealed) { + return; + } + sealed = true; + + _reject(promise, reason); + }, 'Settle: ' + (promise._label || ' unknown promise')); + + if (!sealed && error) { + sealed = true; + _reject(promise, error); + } + }, promise); +} + +function handleOwnThenable(promise, thenable) { + if (thenable._state === FULFILLED) { + fulfill(promise, thenable._result); + } else if (thenable._state === REJECTED) { + _reject(promise, thenable._result); + } else { + subscribe(thenable, undefined, function (value) { + return _resolve(promise, value); + }, function (reason) { + return _reject(promise, reason); + }); + } +} + +function handleMaybeThenable(promise, maybeThenable, then$$) { + if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) { + handleOwnThenable(promise, maybeThenable); + } else { + if (then$$ === GET_THEN_ERROR) { + _reject(promise, GET_THEN_ERROR.error); + } else if (then$$ === undefined) { + fulfill(promise, maybeThenable); + } else if (isFunction(then$$)) { + handleForeignThenable(promise, maybeThenable, then$$); + } else { + fulfill(promise, maybeThenable); + } + } +} + +function _resolve(promise, value) { + if (promise === value) { + _reject(promise, selfFulfillment()); + } else if (objectOrFunction(value)) { + handleMaybeThenable(promise, value, getThen(value)); + } else { + fulfill(promise, value); + } +} + +function publishRejection(promise) { + if (promise._onerror) { + promise._onerror(promise._result); + } + + publish(promise); +} + +function fulfill(promise, value) { + if (promise._state !== PENDING) { + return; + } + + promise._result = value; + promise._state = FULFILLED; + + if (promise._subscribers.length !== 0) { + asap(publish, promise); + } +} + +function _reject(promise, reason) { + if (promise._state !== PENDING) { + return; + } + promise._state = REJECTED; + promise._result = reason; + + asap(publishRejection, promise); +} + +function subscribe(parent, child, onFulfillment, onRejection) { + var _subscribers = parent._subscribers; + var length = _subscribers.length; + + parent._onerror = null; + + _subscribers[length] = child; + _subscribers[length + FULFILLED] = onFulfillment; + _subscribers[length + REJECTED] = onRejection; + + if (length === 0 && parent._state) { + asap(publish, parent); + } +} + +function publish(promise) { + var subscribers = promise._subscribers; + var settled = promise._state; + + if (subscribers.length === 0) { + return; + } + + var child = undefined, + callback = undefined, + detail = promise._result; + + for (var i = 0; i < subscribers.length; i += 3) { + child = subscribers[i]; + callback = subscribers[i + settled]; + + if (child) { + invokeCallback(settled, child, callback, detail); + } else { + callback(detail); + } + } + + promise._subscribers.length = 0; +} + +function ErrorObject() { + this.error = null; +} + +var TRY_CATCH_ERROR = new ErrorObject(); + +function tryCatch(callback, detail) { + try { + return callback(detail); + } catch (e) { + TRY_CATCH_ERROR.error = e; + return TRY_CATCH_ERROR; + } +} + +function invokeCallback(settled, promise, callback, detail) { + var hasCallback = isFunction(callback), + value = undefined, + error = undefined, + succeeded = undefined, + failed = undefined; + + if (hasCallback) { + value = tryCatch(callback, detail); + + if (value === TRY_CATCH_ERROR) { + failed = true; + error = value.error; + value = null; + } else { + succeeded = true; + } + + if (promise === value) { + _reject(promise, cannotReturnOwn()); + return; + } + } else { + value = detail; + succeeded = true; + } + + if (promise._state !== PENDING) { + // noop + } else if (hasCallback && succeeded) { + _resolve(promise, value); + } else if (failed) { + _reject(promise, error); + } else if (settled === FULFILLED) { + fulfill(promise, value); + } else if (settled === REJECTED) { + _reject(promise, value); + } +} + +function initializePromise(promise, resolver) { + try { + resolver(function resolvePromise(value) { + _resolve(promise, value); + }, function rejectPromise(reason) { + _reject(promise, reason); + }); + } catch (e) { + _reject(promise, e); + } +} + +var id = 0; +function nextId() { + return id++; +} + +function makePromise(promise) { + promise[PROMISE_ID] = id++; + promise._state = undefined; + promise._result = undefined; + promise._subscribers = []; +} + +function Enumerator(Constructor, input) { + this._instanceConstructor = Constructor; + this.promise = new Constructor(noop); + + if (!this.promise[PROMISE_ID]) { + makePromise(this.promise); + } + + if (isArray(input)) { + this._input = input; + this.length = input.length; + this._remaining = input.length; + + this._result = new Array(this.length); + + if (this.length === 0) { + fulfill(this.promise, this._result); + } else { + this.length = this.length || 0; + this._enumerate(); + if (this._remaining === 0) { + fulfill(this.promise, this._result); + } + } + } else { + _reject(this.promise, validationError()); + } +} + +function validationError() { + return new Error('Array Methods must be provided an Array'); +}; + +Enumerator.prototype._enumerate = function () { + var length = this.length; + var _input = this._input; + + for (var i = 0; this._state === PENDING && i < length; i++) { + this._eachEntry(_input[i], i); + } +}; + +Enumerator.prototype._eachEntry = function (entry, i) { + var c = this._instanceConstructor; + var resolve$$ = c.resolve; + + if (resolve$$ === resolve) { + var _then = getThen(entry); + + if (_then === then && entry._state !== PENDING) { + this._settledAt(entry._state, i, entry._result); + } else if (typeof _then !== 'function') { + this._remaining--; + this._result[i] = entry; + } else if (c === Promise) { + var promise = new c(noop); + handleMaybeThenable(promise, entry, _then); + this._willSettleAt(promise, i); + } else { + this._willSettleAt(new c(function (resolve$$) { + return resolve$$(entry); + }), i); + } + } else { + this._willSettleAt(resolve$$(entry), i); + } +}; + +Enumerator.prototype._settledAt = function (state, i, value) { + var promise = this.promise; + + if (promise._state === PENDING) { + this._remaining--; + + if (state === REJECTED) { + _reject(promise, value); + } else { + this._result[i] = value; + } + } + + if (this._remaining === 0) { + fulfill(promise, this._result); + } +}; + +Enumerator.prototype._willSettleAt = function (promise, i) { + var enumerator = this; + + subscribe(promise, undefined, function (value) { + return enumerator._settledAt(FULFILLED, i, value); + }, function (reason) { + return enumerator._settledAt(REJECTED, i, reason); + }); +}; + +/** + `Promise.all` accepts an array of promises, and returns a new promise which + is fulfilled with an array of fulfillment values for the passed promises, or + rejected with the reason of the first passed promise to be rejected. It casts all + elements of the passed iterable to promises as it runs this algorithm. + + Example: + + ```javascript + let promise1 = resolve(1); + let promise2 = resolve(2); + let promise3 = resolve(3); + let promises = [ promise1, promise2, promise3 ]; + + Promise.all(promises).then(function(array){ + // The array here would be [ 1, 2, 3 ]; + }); + ``` + + If any of the `promises` given to `all` are rejected, the first promise + that is rejected will be given as an argument to the returned promises's + rejection handler. For example: + + Example: + + ```javascript + let promise1 = resolve(1); + let promise2 = reject(new Error("2")); + let promise3 = reject(new Error("3")); + let promises = [ promise1, promise2, promise3 ]; + + Promise.all(promises).then(function(array){ + // Code here never runs because there are rejected promises! + }, function(error) { + // error.message === "2" + }); + ``` + + @method all + @static + @param {Array} entries array of promises + @param {String} label optional string for labeling the promise. + Useful for tooling. + @return {Promise} promise that is fulfilled when all `promises` have been + fulfilled, or rejected if any of them become rejected. + @static +*/ +function all(entries) { + return new Enumerator(this, entries).promise; +} + +/** + `Promise.race` returns a new promise which is settled in the same way as the + first passed promise to settle. + + Example: + + ```javascript + let promise1 = new Promise(function(resolve, reject){ + setTimeout(function(){ + resolve('promise 1'); + }, 200); + }); + + let promise2 = new Promise(function(resolve, reject){ + setTimeout(function(){ + resolve('promise 2'); + }, 100); + }); + + Promise.race([promise1, promise2]).then(function(result){ + // result === 'promise 2' because it was resolved before promise1 + // was resolved. + }); + ``` + + `Promise.race` is deterministic in that only the state of the first + settled promise matters. For example, even if other promises given to the + `promises` array argument are resolved, but the first settled promise has + become rejected before the other promises became fulfilled, the returned + promise will become rejected: + + ```javascript + let promise1 = new Promise(function(resolve, reject){ + setTimeout(function(){ + resolve('promise 1'); + }, 200); + }); + + let promise2 = new Promise(function(resolve, reject){ + setTimeout(function(){ + reject(new Error('promise 2')); + }, 100); + }); + + Promise.race([promise1, promise2]).then(function(result){ + // Code here never runs + }, function(reason){ + // reason.message === 'promise 2' because promise 2 became rejected before + // promise 1 became fulfilled + }); + ``` + + An example real-world use case is implementing timeouts: + + ```javascript + Promise.race([ajax('foo.json'), timeout(5000)]) + ``` + + @method race + @static + @param {Array} promises array of promises to observe + Useful for tooling. + @return {Promise} a promise which settles in the same way as the first passed + promise to settle. +*/ +function race(entries) { + /*jshint validthis:true */ + var Constructor = this; + + if (!isArray(entries)) { + return new Constructor(function (_, reject) { + return reject(new TypeError('You must pass an array to race.')); + }); + } else { + return new Constructor(function (resolve, reject) { + var length = entries.length; + for (var i = 0; i < length; i++) { + Constructor.resolve(entries[i]).then(resolve, reject); + } + }); + } +} + +/** + `Promise.reject` returns a promise rejected with the passed `reason`. + It is shorthand for the following: + + ```javascript + let promise = new Promise(function(resolve, reject){ + reject(new Error('WHOOPS')); + }); + + promise.then(function(value){ + // Code here doesn't run because the promise is rejected! + }, function(reason){ + // reason.message === 'WHOOPS' + }); + ``` + + Instead of writing the above, your code now simply becomes the following: + + ```javascript + let promise = Promise.reject(new Error('WHOOPS')); + + promise.then(function(value){ + // Code here doesn't run because the promise is rejected! + }, function(reason){ + // reason.message === 'WHOOPS' + }); + ``` + + @method reject + @static + @param {Any} reason value that the returned promise will be rejected with. + Useful for tooling. + @return {Promise} a promise rejected with the given `reason`. +*/ +function reject(reason) { + /*jshint validthis:true */ + var Constructor = this; + var promise = new Constructor(noop); + _reject(promise, reason); + return promise; +} + +function needsResolver() { + throw new TypeError('You must pass a resolver function as the first argument to the promise constructor'); +} + +function needsNew() { + throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function."); +} + +/** + Promise objects represent the eventual result of an asynchronous operation. The + primary way of interacting with a promise is through its `then` method, which + registers callbacks to receive either a promise's eventual value or the reason + why the promise cannot be fulfilled. + + Terminology + ----------- + + - `promise` is an object or function with a `then` method whose behavior conforms to this specification. + - `thenable` is an object or function that defines a `then` method. + - `value` is any legal JavaScript value (including undefined, a thenable, or a promise). + - `exception` is a value that is thrown using the throw statement. + - `reason` is a value that indicates why a promise was rejected. + - `settled` the final resting state of a promise, fulfilled or rejected. + + A promise can be in one of three states: pending, fulfilled, or rejected. + + Promises that are fulfilled have a fulfillment value and are in the fulfilled + state. Promises that are rejected have a rejection reason and are in the + rejected state. A fulfillment value is never a thenable. + + Promises can also be said to *resolve* a value. If this value is also a + promise, then the original promise's settled state will match the value's + settled state. So a promise that *resolves* a promise that rejects will + itself reject, and a promise that *resolves* a promise that fulfills will + itself fulfill. + + + Basic Usage: + ------------ + + ```js + let promise = new Promise(function(resolve, reject) { + // on success + resolve(value); + + // on failure + reject(reason); + }); + + promise.then(function(value) { + // on fulfillment + }, function(reason) { + // on rejection + }); + ``` + + Advanced Usage: + --------------- + + Promises shine when abstracting away asynchronous interactions such as + `XMLHttpRequest`s. + + ```js + function getJSON(url) { + return new Promise(function(resolve, reject){ + let xhr = new XMLHttpRequest(); + + xhr.open('GET', url); + xhr.onreadystatechange = handler; + xhr.responseType = 'json'; + xhr.setRequestHeader('Accept', 'application/json'); + xhr.send(); + + function handler() { + if (this.readyState === this.DONE) { + if (this.status === 200) { + resolve(this.response); + } else { + reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']')); + } + } + }; + }); + } + + getJSON('/posts.json').then(function(json) { + // on fulfillment + }, function(reason) { + // on rejection + }); + ``` + + Unlike callbacks, promises are great composable primitives. + + ```js + Promise.all([ + getJSON('/posts'), + getJSON('/comments') + ]).then(function(values){ + values[0] // => postsJSON + values[1] // => commentsJSON + + return values; + }); + ``` + + @class Promise + @param {function} resolver + Useful for tooling. + @constructor +*/ +function Promise(resolver) { + this[PROMISE_ID] = nextId(); + this._result = this._state = undefined; + this._subscribers = []; + + if (noop !== resolver) { + typeof resolver !== 'function' && needsResolver(); + this instanceof Promise ? initializePromise(this, resolver) : needsNew(); + } +} + +Promise.all = all; +Promise.race = race; +Promise.resolve = resolve; +Promise.reject = reject; +Promise._setScheduler = setScheduler; +Promise._setAsap = setAsap; +Promise._asap = asap; + +Promise.prototype = { + constructor: Promise, + + /** + The primary way of interacting with a promise is through its `then` method, + which registers callbacks to receive either a promise's eventual value or the + reason why the promise cannot be fulfilled. + + ```js + findUser().then(function(user){ + // user is available + }, function(reason){ + // user is unavailable, and you are given the reason why + }); + ``` + + Chaining + -------- + + The return value of `then` is itself a promise. This second, 'downstream' + promise is resolved with the return value of the first promise's fulfillment + or rejection handler, or rejected if the handler throws an exception. + + ```js + findUser().then(function (user) { + return user.name; + }, function (reason) { + return 'default name'; + }).then(function (userName) { + // If `findUser` fulfilled, `userName` will be the user's name, otherwise it + // will be `'default name'` + }); + + findUser().then(function (user) { + throw new Error('Found user, but still unhappy'); + }, function (reason) { + throw new Error('`findUser` rejected and we're unhappy'); + }).then(function (value) { + // never reached + }, function (reason) { + // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'. + // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'. + }); + ``` + If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream. + + ```js + findUser().then(function (user) { + throw new PedagogicalException('Upstream error'); + }).then(function (value) { + // never reached + }).then(function (value) { + // never reached + }, function (reason) { + // The `PedgagocialException` is propagated all the way down to here + }); + ``` + + Assimilation + ------------ + + Sometimes the value you want to propagate to a downstream promise can only be + retrieved asynchronously. This can be achieved by returning a promise in the + fulfillment or rejection handler. The downstream promise will then be pending + until the returned promise is settled. This is called *assimilation*. + + ```js + findUser().then(function (user) { + return findCommentsByAuthor(user); + }).then(function (comments) { + // The user's comments are now available + }); + ``` + + If the assimliated promise rejects, then the downstream promise will also reject. + + ```js + findUser().then(function (user) { + return findCommentsByAuthor(user); + }).then(function (comments) { + // If `findCommentsByAuthor` fulfills, we'll have the value here + }, function (reason) { + // If `findCommentsByAuthor` rejects, we'll have the reason here + }); + ``` + + Simple Example + -------------- + + Synchronous Example + + ```javascript + let result; + + try { + result = findResult(); + // success + } catch(reason) { + // failure + } + ``` + + Errback Example + + ```js + findResult(function(result, err){ + if (err) { + // failure + } else { + // success + } + }); + ``` + + Promise Example; + + ```javascript + findResult().then(function(result){ + // success + }, function(reason){ + // failure + }); + ``` + + Advanced Example + -------------- + + Synchronous Example + + ```javascript + let author, books; + + try { + author = findAuthor(); + books = findBooksByAuthor(author); + // success + } catch(reason) { + // failure + } + ``` + + Errback Example + + ```js + + function foundBooks(books) { + + } + + function failure(reason) { + + } + + findAuthor(function(author, err){ + if (err) { + failure(err); + // failure + } else { + try { + findBoooksByAuthor(author, function(books, err) { + if (err) { + failure(err); + } else { + try { + foundBooks(books); + } catch(reason) { + failure(reason); + } + } + }); + } catch(error) { + failure(err); + } + // success + } + }); + ``` + + Promise Example; + + ```javascript + findAuthor(). + then(findBooksByAuthor). + then(function(books){ + // found books + }).catch(function(reason){ + // something went wrong + }); + ``` + + @method then + @param {Function} onFulfilled + @param {Function} onRejected + Useful for tooling. + @return {Promise} + */ + then: then, + + /** + `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same + as the catch block of a try/catch statement. + + ```js + function findAuthor(){ + throw new Error('couldn't find that author'); + } + + // synchronous + try { + findAuthor(); + } catch(reason) { + // something went wrong + } + + // async with promises + findAuthor().catch(function(reason){ + // something went wrong + }); + ``` + + @method catch + @param {Function} onRejection + Useful for tooling. + @return {Promise} + */ + 'catch': function _catch(onRejection) { + return this.then(null, onRejection); + } +}; + +function polyfill() { + var local = undefined; + + if (typeof global !== 'undefined') { + local = global; + } else if (typeof self !== 'undefined') { + local = self; + } else { + try { + local = Function('return this')(); + } catch (e) { + throw new Error('polyfill failed because global object is unavailable in this environment'); + } + } + + var P = local.Promise; + + if (P) { + var promiseToString = null; + try { + promiseToString = Object.prototype.toString.call(P.resolve()); + } catch (e) { + // silently ignored + } + + if (promiseToString === '[object Promise]' && !P.cast) { + return; + } + } + + local.Promise = Promise; +} + +// Strange compat.. +Promise.polyfill = polyfill; +Promise.Promise = Promise; + +return Promise; + +}))); + +ES6Promise.polyfill(); +//# sourceMappingURL=es6-promise.auto.map diff --git a/vendor/assets/javascripts/jquery.timeago.js b/vendor/assets/javascripts/jquery.timeago.js deleted file mode 100644 index de76cdd2ea7..00000000000 --- a/vendor/assets/javascripts/jquery.timeago.js +++ /dev/null @@ -1,182 +0,0 @@ -/* eslint-disable */ -/** - * Timeago is a jQuery plugin that makes it easy to support automatically - * updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago"). - * - * @name timeago - * @version 1.1.0 - * @requires jQuery v1.2.3+ - * @author Ryan McGeary - * @license MIT License - http://www.opensource.org/licenses/mit-license.php - * - * For usage and examples, visit: - * http://timeago.yarp.com/ - * - * Copyright (c) 2008-2013, Ryan McGeary (ryan -[at]- mcgeary [*dot*] org) - */ - -(function (factory) { - if (typeof define === 'function' && define.amd) { - // AMD. Register as an anonymous module. - define(['jquery'], factory); - } else { - // Browser globals - factory(jQuery); - } -}(function ($) { - $.timeago = function(timestamp) { - if (timestamp instanceof Date) { - return inWords(timestamp); - } else if (typeof timestamp === "string") { - return inWords($.timeago.parse(timestamp)); - } else if (typeof timestamp === "number") { - return inWords(new Date(timestamp)); - } else { - return inWords($.timeago.datetime(timestamp)); - } - }; - var $t = $.timeago; - - $.extend($.timeago, { - settings: { - refreshMillis: 60000, - allowFuture: false, - strings: { - prefixAgo: null, - prefixFromNow: null, - suffixAgo: "ago", - suffixFromNow: "from now", - seconds: "less than a minute", - minute: "about a minute", - minutes: "%d minutes", - hour: "about an hour", - hours: "about %d hours", - day: "a day", - days: "%d days", - month: "about a month", - months: "%d months", - year: "about a year", - years: "%d years", - wordSeparator: " ", - numbers: [] - } - }, - inWords: function(distanceMillis) { - var $l = this.settings.strings; - var prefix = $l.prefixAgo; - var suffix = $l.suffixAgo; - if (this.settings.allowFuture) { - if (distanceMillis < 0) { - prefix = $l.prefixFromNow; - suffix = $l.suffixFromNow; - } - } - - var seconds = Math.abs(distanceMillis) / 1000; - var minutes = seconds / 60; - var hours = minutes / 60; - var days = hours / 24; - var years = days / 365; - - function substitute(stringOrFunction, number) { - var string = $.isFunction(stringOrFunction) ? stringOrFunction(number, distanceMillis) : stringOrFunction; - var value = ($l.numbers && $l.numbers[number]) || number; - return string.replace(/%d/i, value); - } - - var words = seconds < 45 && substitute($l.seconds, Math.round(seconds)) || - seconds < 90 && substitute($l.minute, 1) || - minutes < 45 && substitute($l.minutes, Math.round(minutes)) || - minutes < 90 && substitute($l.hour, 1) || - hours < 24 && substitute($l.hours, Math.round(hours)) || - hours < 42 && substitute($l.day, 1) || - days < 30 && substitute($l.days, Math.round(days)) || - days < 45 && substitute($l.month, 1) || - days < 365 && substitute($l.months, Math.round(days / 30)) || - years < 1.5 && substitute($l.year, 1) || - substitute($l.years, Math.round(years)); - - var separator = $l.wordSeparator || ""; - if ($l.wordSeparator === undefined) { separator = " "; } - return $.trim([prefix, words, suffix].join(separator)); - }, - parse: function(iso8601) { - var s = $.trim(iso8601); - s = s.replace(/\.\d+/,""); // remove milliseconds - s = s.replace(/-/,"/").replace(/-/,"/"); - s = s.replace(/T/," ").replace(/Z/," UTC"); - s = s.replace(/([\+\-]\d\d)\:?(\d\d)/," $1$2"); // -04:00 -> -0400 - return new Date(s); - }, - datetime: function(elem) { - var iso8601 = $t.isTime(elem) ? $(elem).attr("datetime") : $(elem).attr("title"); - return $t.parse(iso8601); - }, - isTime: function(elem) { - // jQuery's `is()` doesn't play well with HTML5 in IE - return $(elem).get(0).tagName.toLowerCase() === "time"; // $(elem).is("time"); - } - }); - - // functions that can be called via $(el).timeago('action') - // init is default when no action is given - // functions are called with context of a single element - var functions = { - init: function(){ - var refresh_el = $.proxy(refresh, this); - refresh_el(); - var $s = $t.settings; - if ($s.refreshMillis > 0) { - setInterval(refresh_el, $s.refreshMillis); - } - }, - update: function(time){ - $(this).data('timeago', { datetime: $t.parse(time) }); - refresh.apply(this); - } - }; - - $.fn.timeago = function(action, options) { - var fn = action ? functions[action] : functions.init; - if(!fn){ - throw new Error("Unknown function name '"+ action +"' for timeago"); - } - // each over objects here and call the requested function - this.each(function(){ - fn.call(this, options); - }); - return this; - }; - - function refresh() { - var data = prepareData(this); - if (!isNaN(data.datetime)) { - $(this).text(inWords(data.datetime)); - } - return this; - } - - function prepareData(element) { - element = $(element); - if (!element.data("timeago")) { - element.data("timeago", { datetime: $t.datetime(element) }); - var text = $.trim(element.text()); - if (text.length > 0 && !($t.isTime(element) && element.attr("title"))) { - element.attr("title", text); - } - } - return element.data("timeago"); - } - - function inWords(date) { - return $t.inWords(distance(date)); - } - - function distance(date) { - return (new Date().getTime() - date.getTime()); - } - - // fix for IE6 suckage - document.createElement("abbr"); - document.createElement("time"); -})); diff --git a/vendor/assets/javascripts/katex.js b/vendor/assets/javascripts/katex.js new file mode 100644 index 00000000000..beb31ca6a7e --- /dev/null +++ b/vendor/assets/javascripts/katex.js @@ -0,0 +1,8683 @@ +/* + The MIT License (MIT) + + Copyright (c) 2015 Khan Academy + + This software also uses portions of the underscore.js project, which is + MIT licensed with the following copyright: + + Copyright (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative + Reporters & Editors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in all + copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + SOFTWARE. + */ + +/* + Here is how to build a version of KaTeX that works with gitlab. + + The problem is that the standard procedure for changing font location doesn't work for the empty string. + + 1. Clone KaTeX. Anything later than 4fb9445a9 (is merged into master) will do. + 2. make (requires node) + 3. sed -i 's,fonts/,,' build/katex.css + 4. Copy build/katex.js, build/katex.css and fonts/* to gitlab. +*/ + +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.katex = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ +/* eslint no-console:0 */ +/** + * This is the main entry point for KaTeX. Here, we expose functions for + * rendering expressions either to DOM nodes or to markup strings. + * + * We also expose the ParseError class to check if errors thrown from KaTeX are + * errors in the expression, or errors in javascript handling. + */ + +var ParseError = require("./src/ParseError"); +var Settings = require("./src/Settings"); + +var buildTree = require("./src/buildTree"); +var parseTree = require("./src/parseTree"); +var utils = require("./src/utils"); + +/** + * Parse and build an expression, and place that expression in the DOM node + * given. + */ +var render = function(expression, baseNode, options) { + utils.clearNode(baseNode); + + var settings = new Settings(options); + + var tree = parseTree(expression, settings); + var node = buildTree(tree, expression, settings).toNode(); + + baseNode.appendChild(node); +}; + +// KaTeX's styles don't work properly in quirks mode. Print out an error, and +// disable rendering. +if (typeof document !== "undefined") { + if (document.compatMode !== "CSS1Compat") { + typeof console !== "undefined" && console.warn( + "Warning: KaTeX doesn't work in quirks mode. Make sure your " + + "website has a suitable doctype."); + + render = function() { + throw new ParseError("KaTeX doesn't work in quirks mode."); + }; + } +} + +/** + * Parse and build an expression, and return the markup for that. + */ +var renderToString = function(expression, options) { + var settings = new Settings(options); + + var tree = parseTree(expression, settings); + return buildTree(tree, expression, settings).toMarkup(); +}; + +/** + * Parse an expression and return the parse tree. + */ +var generateParseTree = function(expression, options) { + var settings = new Settings(options); + return parseTree(expression, settings); +}; + +module.exports = { + render: render, + renderToString: renderToString, + /** + * NOTE: This method is not currently recommended for public use. + * The internal tree representation is unstable and is very likely + * to change. Use at your own risk. + */ + __parse: generateParseTree, + ParseError: ParseError, +}; + +},{"./src/ParseError":6,"./src/Settings":8,"./src/buildTree":13,"./src/parseTree":22,"./src/utils":25}],2:[function(require,module,exports){ +/** @flow */ + +"use strict"; + +function getRelocatable(re) { + // In the future, this could use a WeakMap instead of an expando. + if (!re.__matchAtRelocatable) { + // Disjunctions are the lowest-precedence operator, so we can make any + // pattern match the empty string by appending `|()` to it: + // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-patterns + var source = re.source + "|()"; + + // We always make the new regex global. + var flags = "g" + (re.ignoreCase ? "i" : "") + (re.multiline ? "m" : "") + (re.unicode ? "u" : "") + // sticky (/.../y) doesn't make sense in conjunction with our relocation + // logic, so we ignore it here. + ; + + re.__matchAtRelocatable = new RegExp(source, flags); + } + return re.__matchAtRelocatable; +} + +function matchAt(re, str, pos) { + if (re.global || re.sticky) { + throw new Error("matchAt(...): Only non-global regexes are supported"); + } + var reloc = getRelocatable(re); + reloc.lastIndex = pos; + var match = reloc.exec(str); + // Last capturing group is our sentinel that indicates whether the regex + // matched at the given location. + if (match[match.length - 1] == null) { + // Original regex matched. + match.length = match.length - 1; + return match; + } else { + return null; + } +} + +module.exports = matchAt; +},{}],3:[function(require,module,exports){ +/** + * The Lexer class handles tokenizing the input in various ways. Since our + * parser expects us to be able to backtrack, the lexer allows lexing from any + * given starting point. + * + * Its main exposed function is the `lex` function, which takes a position to + * lex from and a type of token to lex. It defers to the appropriate `_innerLex` + * function. + * + * The various `_innerLex` functions perform the actual lexing of different + * kinds. + */ + +var matchAt = require("match-at"); + +var ParseError = require("./ParseError"); + +// The main lexer class +function Lexer(input) { + this.input = input; + this.pos = 0; +} + +/** + * The resulting token returned from `lex`. + * + * It consists of the token text plus some position information. + * The position information is essentially a range in an input string, + * but instead of referencing the bare input string, we refer to the lexer. + * That way it is possible to attach extra metadata to the input string, + * like for example a file name or similar. + * + * The position information (all three parameters) is optional, + * so it is OK to construct synthetic tokens if appropriate. + * Not providing available position information may lead to + * degraded error reporting, though. + * + * @param {string} text the text of this token + * @param {number=} start the start offset, zero-based inclusive + * @param {number=} end the end offset, zero-based exclusive + * @param {Lexer=} lexer the lexer which in turn holds the input string + */ +function Token(text, start, end, lexer) { + this.text = text; + this.start = start; + this.end = end; + this.lexer = lexer; +} + +/** + * Given a pair of tokens (this and endToken), compute a “Token” encompassing + * the whole input range enclosed by these two. + * + * @param {Token} endToken last token of the range, inclusive + * @param {string} text the text of the newly constructed token + */ +Token.prototype.range = function(endToken, text) { + if (endToken.lexer !== this.lexer) { + return new Token(text); // sorry, no position information available + } + return new Token(text, this.start, endToken.end, this.lexer); +}; + +/* The following tokenRegex + * - matches typical whitespace (but not NBSP etc.) using its first group + * - does not match any control character \x00-\x1f except whitespace + * - does not match a bare backslash + * - matches any ASCII character except those just mentioned + * - does not match the BMP private use area \uE000-\uF8FF + * - does not match bare surrogate code units + * - matches any BMP character except for those just described + * - matches any valid Unicode surrogate pair + * - matches a backslash followed by one or more letters + * - matches a backslash followed by any BMP character, including newline + * Just because the Lexer matches something doesn't mean it's valid input: + * If there is no matching function or symbol definition, the Parser will + * still reject the input. + */ +var tokenRegex = new RegExp( + "([ \r\n\t]+)|" + // whitespace + "([!-\\[\\]-\u2027\u202A-\uD7FF\uF900-\uFFFF]" + // single codepoint + "|[\uD800-\uDBFF][\uDC00-\uDFFF]" + // surrogate pair + "|\\\\(?:[a-zA-Z]+|[^\uD800-\uDFFF])" + // function name + ")" +); + +/** + * This function lexes a single token. + */ +Lexer.prototype.lex = function() { + var input = this.input; + var pos = this.pos; + if (pos === input.length) { + return new Token("EOF", pos, pos, this); + } + var match = matchAt(tokenRegex, input, pos); + if (match === null) { + throw new ParseError( + "Unexpected character: '" + input[pos] + "'", + new Token(input[pos], pos, pos + 1, this)); + } + var text = match[2] || " "; + var start = this.pos; + this.pos += match[0].length; + var end = this.pos; + return new Token(text, start, end, this); +}; + +module.exports = Lexer; + +},{"./ParseError":6,"match-at":2}],4:[function(require,module,exports){ +/** + * This file contains the “gullet” where macros are expanded + * until only non-macro tokens remain. + */ + +var Lexer = require("./Lexer"); + +function MacroExpander(input, macros) { + this.lexer = new Lexer(input); + this.macros = macros; + this.stack = []; // contains tokens in REVERSE order + this.discardedWhiteSpace = []; +} + +/** + * Recursively expand first token, then return first non-expandable token. + */ +MacroExpander.prototype.nextToken = function() { + for (;;) { + if (this.stack.length === 0) { + this.stack.push(this.lexer.lex()); + } + var topToken = this.stack.pop(); + var name = topToken.text; + if (!(name.charAt(0) === "\\" && this.macros.hasOwnProperty(name))) { + return topToken; + } + var expansion = this.macros[name]; + if (typeof expansion === "string") { + var bodyLexer = new Lexer(expansion); + expansion = []; + var tok = bodyLexer.lex(); + while (tok.text !== "EOF") { + expansion.push(tok); + tok = bodyLexer.lex(); + } + expansion.reverse(); // to fit in with stack using push and pop + this.macros[name] = expansion; + } + this.stack = this.stack.concat(expansion); + } +}; + +MacroExpander.prototype.get = function(ignoreSpace) { + this.discardedWhiteSpace = []; + var token = this.nextToken(); + if (ignoreSpace) { + while (token.text === " ") { + this.discardedWhiteSpace.push(token); + token = this.nextToken(); + } + } + return token; +}; + +/** + * Undo the effect of the preceding call to the get method. + * A call to this method MUST be immediately preceded and immediately followed + * by a call to get. Only used during mode switching, i.e. after one token + * was got in the old mode but should get got again in a new mode + * with possibly different whitespace handling. + */ +MacroExpander.prototype.unget = function(token) { + this.stack.push(token); + while (this.discardedWhiteSpace.length !== 0) { + this.stack.push(this.discardedWhiteSpace.pop()); + } +}; + +module.exports = MacroExpander; + +},{"./Lexer":3}],5:[function(require,module,exports){ +/** + * This file contains information about the options that the Parser carries + * around with it while parsing. Data is held in an `Options` object, and when + * recursing, a new `Options` object can be created with the `.with*` and + * `.reset` functions. + */ + +/** + * This is the main options class. It contains the style, size, color, and font + * of the current parse level. It also contains the style and size of the parent + * parse level, so size changes can be handled efficiently. + * + * Each of the `.with*` and `.reset` functions passes its current style and size + * as the parentStyle and parentSize of the new options class, so parent + * handling is taken care of automatically. + */ +function Options(data) { + this.style = data.style; + this.color = data.color; + this.size = data.size; + this.phantom = data.phantom; + this.font = data.font; + + if (data.parentStyle === undefined) { + this.parentStyle = data.style; + } else { + this.parentStyle = data.parentStyle; + } + + if (data.parentSize === undefined) { + this.parentSize = data.size; + } else { + this.parentSize = data.parentSize; + } +} + +/** + * Returns a new options object with the same properties as "this". Properties + * from "extension" will be copied to the new options object. + */ +Options.prototype.extend = function(extension) { + var data = { + style: this.style, + size: this.size, + color: this.color, + parentStyle: this.style, + parentSize: this.size, + phantom: this.phantom, + font: this.font, + }; + + for (var key in extension) { + if (extension.hasOwnProperty(key)) { + data[key] = extension[key]; + } + } + + return new Options(data); +}; + +/** + * Create a new options object with the given style. + */ +Options.prototype.withStyle = function(style) { + return this.extend({ + style: style, + }); +}; + +/** + * Create a new options object with the given size. + */ +Options.prototype.withSize = function(size) { + return this.extend({ + size: size, + }); +}; + +/** + * Create a new options object with the given color. + */ +Options.prototype.withColor = function(color) { + return this.extend({ + color: color, + }); +}; + +/** + * Create a new options object with "phantom" set to true. + */ +Options.prototype.withPhantom = function() { + return this.extend({ + phantom: true, + }); +}; + +/** + * Create a new options objects with the give font. + */ +Options.prototype.withFont = function(font) { + return this.extend({ + font: font, + }); +}; + +/** + * Create a new options object with the same style, size, and color. This is + * used so that parent style and size changes are handled correctly. + */ +Options.prototype.reset = function() { + return this.extend({}); +}; + +/** + * A map of color names to CSS colors. + * TODO(emily): Remove this when we have real macros + */ +var colorMap = { + "katex-blue": "#6495ed", + "katex-orange": "#ffa500", + "katex-pink": "#ff00af", + "katex-red": "#df0030", + "katex-green": "#28ae7b", + "katex-gray": "gray", + "katex-purple": "#9d38bd", + "katex-blueA": "#ccfaff", + "katex-blueB": "#80f6ff", + "katex-blueC": "#63d9ea", + "katex-blueD": "#11accd", + "katex-blueE": "#0c7f99", + "katex-tealA": "#94fff5", + "katex-tealB": "#26edd5", + "katex-tealC": "#01d1c1", + "katex-tealD": "#01a995", + "katex-tealE": "#208170", + "katex-greenA": "#b6ffb0", + "katex-greenB": "#8af281", + "katex-greenC": "#74cf70", + "katex-greenD": "#1fab54", + "katex-greenE": "#0d923f", + "katex-goldA": "#ffd0a9", + "katex-goldB": "#ffbb71", + "katex-goldC": "#ff9c39", + "katex-goldD": "#e07d10", + "katex-goldE": "#a75a05", + "katex-redA": "#fca9a9", + "katex-redB": "#ff8482", + "katex-redC": "#f9685d", + "katex-redD": "#e84d39", + "katex-redE": "#bc2612", + "katex-maroonA": "#ffbde0", + "katex-maroonB": "#ff92c6", + "katex-maroonC": "#ed5fa6", + "katex-maroonD": "#ca337c", + "katex-maroonE": "#9e034e", + "katex-purpleA": "#ddd7ff", + "katex-purpleB": "#c6b9fc", + "katex-purpleC": "#aa87ff", + "katex-purpleD": "#7854ab", + "katex-purpleE": "#543b78", + "katex-mintA": "#f5f9e8", + "katex-mintB": "#edf2df", + "katex-mintC": "#e0e5cc", + "katex-grayA": "#f6f7f7", + "katex-grayB": "#f0f1f2", + "katex-grayC": "#e3e5e6", + "katex-grayD": "#d6d8da", + "katex-grayE": "#babec2", + "katex-grayF": "#888d93", + "katex-grayG": "#626569", + "katex-grayH": "#3b3e40", + "katex-grayI": "#21242c", + "katex-kaBlue": "#314453", + "katex-kaGreen": "#71B307", +}; + +/** + * Gets the CSS color of the current options object, accounting for the + * `colorMap`. + */ +Options.prototype.getColor = function() { + if (this.phantom) { + return "transparent"; + } else { + return colorMap[this.color] || this.color; + } +}; + +module.exports = Options; + +},{}],6:[function(require,module,exports){ +/** + * This is the ParseError class, which is the main error thrown by KaTeX + * functions when something has gone wrong. This is used to distinguish internal + * errors from errors in the expression that the user provided. + * + * If possible, a caller should provide a Token or ParseNode with information + * about where in the source string the problem occurred. + * + * @param {string} message The error message + * @param {(Token|ParseNode)=} token An object providing position information + */ +function ParseError(message, token) { + var error = "KaTeX parse error: " + message; + var start; + var end; + + if (token && token.lexer && token.start <= token.end) { + // If we have the input and a position, make the error a bit fancier + + // Get the input + var input = token.lexer.input; + + // Prepend some information + start = token.start; + end = token.end; + if (start === input.length) { + error += " at end of input: "; + } else { + error += " at position " + (start + 1) + ": "; + } + + // Underline token in question using combining underscores + var underlined = input.slice(start, end).replace(/[^]/g, "$&\u0332"); + + // Extract some context from the input and add it to the error + var left; + if (start > 15) { + left = "…" + input.slice(start - 15, start); + } else { + left = input.slice(0, start); + } + var right; + if (end + 15 < input.length) { + right = input.slice(end, end + 15) + "…"; + } else { + right = input.slice(end); + } + error += left + underlined + right; + } + + // Some hackery to make ParseError a prototype of Error + // See http://stackoverflow.com/a/8460753 + var self = new Error(error); + self.name = "ParseError"; + self.__proto__ = ParseError.prototype; + + self.position = start; + return self; +} + +// More hackery +ParseError.prototype.__proto__ = Error.prototype; + +module.exports = ParseError; + +},{}],7:[function(require,module,exports){ +/* eslint no-constant-condition:0 */ +var functions = require("./functions"); +var environments = require("./environments"); +var MacroExpander = require("./MacroExpander"); +var symbols = require("./symbols"); +var utils = require("./utils"); +var cjkRegex = require("./unicodeRegexes").cjkRegex; + +var parseData = require("./parseData"); +var ParseError = require("./ParseError"); + +/** + * This file contains the parser used to parse out a TeX expression from the + * input. Since TeX isn't context-free, standard parsers don't work particularly + * well. + * + * The strategy of this parser is as such: + * + * The main functions (the `.parse...` ones) take a position in the current + * parse string to parse tokens from. The lexer (found in Lexer.js, stored at + * this.lexer) also supports pulling out tokens at arbitrary places. When + * individual tokens are needed at a position, the lexer is called to pull out a + * token, which is then used. + * + * The parser has a property called "mode" indicating the mode that + * the parser is currently in. Currently it has to be one of "math" or + * "text", which denotes whether the current environment is a math-y + * one or a text-y one (e.g. inside \text). Currently, this serves to + * limit the functions which can be used in text mode. + * + * The main functions then return an object which contains the useful data that + * was parsed at its given point, and a new position at the end of the parsed + * data. The main functions can call each other and continue the parsing by + * using the returned position as a new starting point. + * + * There are also extra `.handle...` functions, which pull out some reused + * functionality into self-contained functions. + * + * The earlier functions return ParseNodes. + * The later functions (which are called deeper in the parse) sometimes return + * ParseFuncOrArgument, which contain a ParseNode as well as some data about + * whether the parsed object is a function which is missing some arguments, or a + * standalone object which can be used as an argument to another function. + */ + +/** + * Main Parser class + */ +function Parser(input, settings) { + // Create a new macro expander (gullet) and (indirectly via that) also a + // new lexer (mouth) for this parser (stomach, in the language of TeX) + this.gullet = new MacroExpander(input, settings.macros); + // Store the settings for use in parsing + this.settings = settings; +} + +var ParseNode = parseData.ParseNode; + +/** + * An initial function (without its arguments), or an argument to a function. + * The `result` argument should be a ParseNode. + */ +function ParseFuncOrArgument(result, isFunction, token) { + this.result = result; + // Is this a function (i.e. is it something defined in functions.js)? + this.isFunction = isFunction; + this.token = token; +} + +/** + * Checks a result to make sure it has the right type, and throws an + * appropriate error otherwise. + * + * @param {boolean=} consume whether to consume the expected token, + * defaults to true + */ +Parser.prototype.expect = function(text, consume) { + if (this.nextToken.text !== text) { + throw new ParseError( + "Expected '" + text + "', got '" + this.nextToken.text + "'", + this.nextToken + ); + } + if (consume !== false) { + this.consume(); + } +}; + +/** + * Considers the current look ahead token as consumed, + * and fetches the one after that as the new look ahead. + */ +Parser.prototype.consume = function() { + this.nextToken = this.gullet.get(this.mode === "math"); +}; + +Parser.prototype.switchMode = function(newMode) { + this.gullet.unget(this.nextToken); + this.mode = newMode; + this.consume(); +}; + +/** + * Main parsing function, which parses an entire input. + * + * @return {?Array.<ParseNode>} + */ +Parser.prototype.parse = function() { + // Try to parse the input + this.mode = "math"; + this.consume(); + var parse = this.parseInput(); + return parse; +}; + +/** + * Parses an entire input tree. + */ +Parser.prototype.parseInput = function() { + // Parse an expression + var expression = this.parseExpression(false); + // If we succeeded, make sure there's an EOF at the end + this.expect("EOF", false); + return expression; +}; + +var endOfExpression = ["}", "\\end", "\\right", "&", "\\\\", "\\cr"]; + +/** + * Parses an "expression", which is a list of atoms. + * + * @param {boolean} breakOnInfix Should the parsing stop when we hit infix + * nodes? This happens when functions have higher precendence + * than infix nodes in implicit parses. + * + * @param {?string} breakOnTokenText The text of the token that the expression + * should end with, or `null` if something else should end the + * expression. + * + * @return {ParseNode} + */ +Parser.prototype.parseExpression = function(breakOnInfix, breakOnTokenText) { + var body = []; + // Keep adding atoms to the body until we can't parse any more atoms (either + // we reached the end, a }, or a \right) + while (true) { + var lex = this.nextToken; + if (endOfExpression.indexOf(lex.text) !== -1) { + break; + } + if (breakOnTokenText && lex.text === breakOnTokenText) { + break; + } + if (breakOnInfix && functions[lex.text] && functions[lex.text].infix) { + break; + } + var atom = this.parseAtom(); + if (!atom) { + if (!this.settings.throwOnError && lex.text[0] === "\\") { + var errorNode = this.handleUnsupportedCmd(); + body.push(errorNode); + continue; + } + + break; + } + body.push(atom); + } + return this.handleInfixNodes(body); +}; + +/** + * Rewrites infix operators such as \over with corresponding commands such + * as \frac. + * + * There can only be one infix operator per group. If there's more than one + * then the expression is ambiguous. This can be resolved by adding {}. + * + * @returns {Array} + */ +Parser.prototype.handleInfixNodes = function(body) { + var overIndex = -1; + var funcName; + + for (var i = 0; i < body.length; i++) { + var node = body[i]; + if (node.type === "infix") { + if (overIndex !== -1) { + throw new ParseError( + "only one infix operator per group", + node.value.token); + } + overIndex = i; + funcName = node.value.replaceWith; + } + } + + if (overIndex !== -1) { + var numerNode; + var denomNode; + + var numerBody = body.slice(0, overIndex); + var denomBody = body.slice(overIndex + 1); + + if (numerBody.length === 1 && numerBody[0].type === "ordgroup") { + numerNode = numerBody[0]; + } else { + numerNode = new ParseNode("ordgroup", numerBody, this.mode); + } + + if (denomBody.length === 1 && denomBody[0].type === "ordgroup") { + denomNode = denomBody[0]; + } else { + denomNode = new ParseNode("ordgroup", denomBody, this.mode); + } + + var value = this.callFunction( + funcName, [numerNode, denomNode], null); + return [new ParseNode(value.type, value, this.mode)]; + } else { + return body; + } +}; + +// The greediness of a superscript or subscript +var SUPSUB_GREEDINESS = 1; + +/** + * Handle a subscript or superscript with nice errors. + */ +Parser.prototype.handleSupSubscript = function(name) { + var symbolToken = this.nextToken; + var symbol = symbolToken.text; + this.consume(); + var group = this.parseGroup(); + + if (!group) { + if (!this.settings.throwOnError && this.nextToken.text[0] === "\\") { + return this.handleUnsupportedCmd(); + } else { + throw new ParseError( + "Expected group after '" + symbol + "'", + symbolToken + ); + } + } else if (group.isFunction) { + // ^ and _ have a greediness, so handle interactions with functions' + // greediness + var funcGreediness = functions[group.result].greediness; + if (funcGreediness > SUPSUB_GREEDINESS) { + return this.parseFunction(group); + } else { + throw new ParseError( + "Got function '" + group.result + "' with no arguments " + + "as " + name, symbolToken); + } + } else { + return group.result; + } +}; + +/** + * Converts the textual input of an unsupported command into a text node + * contained within a color node whose color is determined by errorColor + */ +Parser.prototype.handleUnsupportedCmd = function() { + var text = this.nextToken.text; + var textordArray = []; + + for (var i = 0; i < text.length; i++) { + textordArray.push(new ParseNode("textord", text[i], "text")); + } + + var textNode = new ParseNode( + "text", + { + body: textordArray, + type: "text", + }, + this.mode); + + var colorNode = new ParseNode( + "color", + { + color: this.settings.errorColor, + value: [textNode], + type: "color", + }, + this.mode); + + this.consume(); + return colorNode; +}; + +/** + * Parses a group with optional super/subscripts. + * + * @return {?ParseNode} + */ +Parser.prototype.parseAtom = function() { + // The body of an atom is an implicit group, so that things like + // \left(x\right)^2 work correctly. + var base = this.parseImplicitGroup(); + + // In text mode, we don't have superscripts or subscripts + if (this.mode === "text") { + return base; + } + + // Note that base may be empty (i.e. null) at this point. + + var superscript; + var subscript; + while (true) { + // Lex the first token + var lex = this.nextToken; + + if (lex.text === "\\limits" || lex.text === "\\nolimits") { + // We got a limit control + if (!base || base.type !== "op") { + throw new ParseError( + "Limit controls must follow a math operator", + lex); + } else { + var limits = lex.text === "\\limits"; + base.value.limits = limits; + base.value.alwaysHandleSupSub = true; + } + this.consume(); + } else if (lex.text === "^") { + // We got a superscript start + if (superscript) { + throw new ParseError("Double superscript", lex); + } + superscript = this.handleSupSubscript("superscript"); + } else if (lex.text === "_") { + // We got a subscript start + if (subscript) { + throw new ParseError("Double subscript", lex); + } + subscript = this.handleSupSubscript("subscript"); + } else if (lex.text === "'") { + // We got a prime + var prime = new ParseNode("textord", "\\prime", this.mode); + + // Many primes can be grouped together, so we handle this here + var primes = [prime]; + this.consume(); + // Keep lexing tokens until we get something that's not a prime + while (this.nextToken.text === "'") { + // For each one, add another prime to the list + primes.push(prime); + this.consume(); + } + // Put them into an ordgroup as the superscript + superscript = new ParseNode("ordgroup", primes, this.mode); + } else { + // If it wasn't ^, _, or ', stop parsing super/subscripts + break; + } + } + + if (superscript || subscript) { + // If we got either a superscript or subscript, create a supsub + return new ParseNode("supsub", { + base: base, + sup: superscript, + sub: subscript, + }, this.mode); + } else { + // Otherwise return the original body + return base; + } +}; + +// A list of the size-changing functions, for use in parseImplicitGroup +var sizeFuncs = [ + "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", "\\normalsize", + "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge", +]; + +// A list of the style-changing functions, for use in parseImplicitGroup +var styleFuncs = [ + "\\displaystyle", "\\textstyle", "\\scriptstyle", "\\scriptscriptstyle", +]; + +/** + * Parses an implicit group, which is a group that starts at the end of a + * specified, and ends right before a higher explicit group ends, or at EOL. It + * is used for functions that appear to affect the current style, like \Large or + * \textrm, where instead of keeping a style we just pretend that there is an + * implicit grouping after it until the end of the group. E.g. + * small text {\Large large text} small text again + * It is also used for \left and \right to get the correct grouping. + * + * @return {?ParseNode} + */ +Parser.prototype.parseImplicitGroup = function() { + var start = this.parseSymbol(); + + if (start == null) { + // If we didn't get anything we handle, fall back to parseFunction + return this.parseFunction(); + } + + var func = start.result; + var body; + + if (func === "\\left") { + // If we see a left: + // Parse the entire left function (including the delimiter) + var left = this.parseFunction(start); + // Parse out the implicit body + body = this.parseExpression(false); + // Check the next token + this.expect("\\right", false); + var right = this.parseFunction(); + return new ParseNode("leftright", { + body: body, + left: left.value.value, + right: right.value.value, + }, this.mode); + } else if (func === "\\begin") { + // begin...end is similar to left...right + var begin = this.parseFunction(start); + var envName = begin.value.name; + if (!environments.hasOwnProperty(envName)) { + throw new ParseError( + "No such environment: " + envName, begin.value.nameGroup); + } + // Build the environment object. Arguments and other information will + // be made available to the begin and end methods using properties. + var env = environments[envName]; + var args = this.parseArguments("\\begin{" + envName + "}", env); + var context = { + mode: this.mode, + envName: envName, + parser: this, + positions: args.pop(), + }; + var result = env.handler(context, args); + this.expect("\\end", false); + var endNameToken = this.nextToken; + var end = this.parseFunction(); + if (end.value.name !== envName) { + throw new ParseError( + "Mismatch: \\begin{" + envName + "} matched " + + "by \\end{" + end.value.name + "}", + endNameToken); + } + result.position = end.position; + return result; + } else if (utils.contains(sizeFuncs, func)) { + // If we see a sizing function, parse out the implict body + body = this.parseExpression(false); + return new ParseNode("sizing", { + // Figure out what size to use based on the list of functions above + size: "size" + (utils.indexOf(sizeFuncs, func) + 1), + value: body, + }, this.mode); + } else if (utils.contains(styleFuncs, func)) { + // If we see a styling function, parse out the implict body + body = this.parseExpression(true); + return new ParseNode("styling", { + // Figure out what style to use by pulling out the style from + // the function name + style: func.slice(1, func.length - 5), + value: body, + }, this.mode); + } else { + // Defer to parseFunction if it's not a function we handle + return this.parseFunction(start); + } +}; + +/** + * Parses an entire function, including its base and all of its arguments. + * The base might either have been parsed already, in which case + * it is provided as an argument, or it's the next group in the input. + * + * @param {ParseFuncOrArgument=} baseGroup optional as described above + * @return {?ParseNode} + */ +Parser.prototype.parseFunction = function(baseGroup) { + if (!baseGroup) { + baseGroup = this.parseGroup(); + } + + if (baseGroup) { + if (baseGroup.isFunction) { + var func = baseGroup.result; + var funcData = functions[func]; + if (this.mode === "text" && !funcData.allowedInText) { + throw new ParseError( + "Can't use function '" + func + "' in text mode", + baseGroup.token); + } + + var args = this.parseArguments(func, funcData); + var token = baseGroup.token; + var result = this.callFunction(func, args, args.pop(), token); + return new ParseNode(result.type, result, this.mode); + } else { + return baseGroup.result; + } + } else { + return null; + } +}; + +/** + * Call a function handler with a suitable context and arguments. + */ +Parser.prototype.callFunction = function(name, args, positions, token) { + var context = { + funcName: name, + parser: this, + positions: positions, + token: token, + }; + return functions[name].handler(context, args); +}; + +/** + * Parses the arguments of a function or environment + * + * @param {string} func "\name" or "\begin{name}" + * @param {{numArgs:number,numOptionalArgs:number|undefined}} funcData + * @return the array of arguments, with the list of positions as last element + */ +Parser.prototype.parseArguments = function(func, funcData) { + var totalArgs = funcData.numArgs + funcData.numOptionalArgs; + if (totalArgs === 0) { + return [[this.pos]]; + } + + var baseGreediness = funcData.greediness; + var positions = [this.pos]; + var args = []; + + for (var i = 0; i < totalArgs; i++) { + var nextToken = this.nextToken; + var argType = funcData.argTypes && funcData.argTypes[i]; + var arg; + if (i < funcData.numOptionalArgs) { + if (argType) { + arg = this.parseGroupOfType(argType, true); + } else { + arg = this.parseGroup(true); + } + if (!arg) { + args.push(null); + positions.push(this.pos); + continue; + } + } else { + if (argType) { + arg = this.parseGroupOfType(argType); + } else { + arg = this.parseGroup(); + } + if (!arg) { + if (!this.settings.throwOnError && + this.nextToken.text[0] === "\\") { + arg = new ParseFuncOrArgument( + this.handleUnsupportedCmd(this.nextToken.text), + false); + } else { + throw new ParseError( + "Expected group after '" + func + "'", nextToken); + } + } + } + var argNode; + if (arg.isFunction) { + var argGreediness = + functions[arg.result].greediness; + if (argGreediness > baseGreediness) { + argNode = this.parseFunction(arg); + } else { + throw new ParseError( + "Got function '" + arg.result + "' as " + + "argument to '" + func + "'", nextToken); + } + } else { + argNode = arg.result; + } + args.push(argNode); + positions.push(this.pos); + } + + args.push(positions); + + return args; +}; + + +/** + * Parses a group when the mode is changing. + * + * @return {?ParseFuncOrArgument} + */ +Parser.prototype.parseGroupOfType = function(innerMode, optional) { + var outerMode = this.mode; + // Handle `original` argTypes + if (innerMode === "original") { + innerMode = outerMode; + } + + if (innerMode === "color") { + return this.parseColorGroup(optional); + } + if (innerMode === "size") { + return this.parseSizeGroup(optional); + } + + this.switchMode(innerMode); + if (innerMode === "text") { + // text mode is special because it should ignore the whitespace before + // it + while (this.nextToken.text === " ") { + this.consume(); + } + } + // By the time we get here, innerMode is one of "text" or "math". + // We switch the mode of the parser, recurse, then restore the old mode. + var res = this.parseGroup(optional); + this.switchMode(outerMode); + return res; +}; + +/** + * Parses a group, essentially returning the string formed by the + * brace-enclosed tokens plus some position information. + * + * @param {string} modeName Used to describe the mode in error messages + * @param {boolean=} optional Whether the group is optional or required + */ +Parser.prototype.parseStringGroup = function(modeName, optional) { + if (optional && this.nextToken.text !== "[") { + return null; + } + var outerMode = this.mode; + this.mode = "text"; + this.expect(optional ? "[" : "{"); + var str = ""; + var firstToken = this.nextToken; + var lastToken = firstToken; + while (this.nextToken.text !== (optional ? "]" : "}")) { + if (this.nextToken.text === "EOF") { + throw new ParseError( + "Unexpected end of input in " + modeName, + firstToken.range(this.nextToken, str)); + } + lastToken = this.nextToken; + str += lastToken.text; + this.consume(); + } + this.mode = outerMode; + this.expect(optional ? "]" : "}"); + return firstToken.range(lastToken, str); +}; + +/** + * Parses a color description. + */ +Parser.prototype.parseColorGroup = function(optional) { + var res = this.parseStringGroup("color", optional); + if (!res) { + return null; + } + var match = (/^(#[a-z0-9]+|[a-z]+)$/i).exec(res.text); + if (!match) { + throw new ParseError("Invalid color: '" + res.text + "'", res); + } + return new ParseFuncOrArgument( + new ParseNode("color", match[0], this.mode), + false); +}; + +/** + * Parses a size specification, consisting of magnitude and unit. + */ +Parser.prototype.parseSizeGroup = function(optional) { + var res = this.parseStringGroup("size", optional); + if (!res) { + return null; + } + var match = (/(-?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/).exec(res.text); + if (!match) { + throw new ParseError("Invalid size: '" + res.text + "'", res); + } + var data = { + number: +(match[1] + match[2]), // sign + magnitude, cast to number + unit: match[3], + }; + if (data.unit !== "em" && data.unit !== "ex") { + throw new ParseError("Invalid unit: '" + data.unit + "'", res); + } + return new ParseFuncOrArgument( + new ParseNode("color", data, this.mode), + false); +}; + +/** + * If the argument is false or absent, this parses an ordinary group, + * which is either a single nucleus (like "x") or an expression + * in braces (like "{x+y}"). + * If the argument is true, it parses either a bracket-delimited expression + * (like "[x+y]") or returns null to indicate the absence of a + * bracket-enclosed group. + * + * @param {boolean=} optional Whether the group is optional or required + * @return {?ParseFuncOrArgument} + */ +Parser.prototype.parseGroup = function(optional) { + var firstToken = this.nextToken; + // Try to parse an open brace + if (this.nextToken.text === (optional ? "[" : "{")) { + // If we get a brace, parse an expression + this.consume(); + var expression = this.parseExpression(false, optional ? "]" : null); + var lastToken = this.nextToken; + // Make sure we get a close brace + this.expect(optional ? "]" : "}"); + if (this.mode === "text") { + this.formLigatures(expression); + } + return new ParseFuncOrArgument( + new ParseNode("ordgroup", expression, this.mode, + firstToken, lastToken), + false); + } else { + // Otherwise, just return a nucleus, or nothing for an optional group + return optional ? null : this.parseSymbol(); + } +}; + +/** + * Form ligature-like combinations of characters for text mode. + * This includes inputs like "--", "---", "``" and "''". + * The result will simply replace multiple textord nodes with a single + * character in each value by a single textord node having multiple + * characters in its value. The representation is still ASCII source. + * + * @param {Array.<ParseNode>} group the nodes of this group, + * list will be moified in place + */ +Parser.prototype.formLigatures = function(group) { + var i; + var n = group.length - 1; + for (i = 0; i < n; ++i) { + var a = group[i]; + var v = a.value; + if (v === "-" && group[i + 1].value === "-") { + if (i + 1 < n && group[i + 2].value === "-") { + group.splice(i, 3, new ParseNode( + "textord", "---", "text", a, group[i + 2])); + n -= 2; + } else { + group.splice(i, 2, new ParseNode( + "textord", "--", "text", a, group[i + 1])); + n -= 1; + } + } + if ((v === "'" || v === "`") && group[i + 1].value === v) { + group.splice(i, 2, new ParseNode( + "textord", v + v, "text", a, group[i + 1])); + n -= 1; + } + } +}; + +/** + * Parse a single symbol out of the string. Here, we handle both the functions + * we have defined, as well as the single character symbols + * + * @return {?ParseFuncOrArgument} + */ +Parser.prototype.parseSymbol = function() { + var nucleus = this.nextToken; + + if (functions[nucleus.text]) { + this.consume(); + // If there exists a function with this name, we return the function and + // say that it is a function. + return new ParseFuncOrArgument( + nucleus.text, + true, nucleus); + } else if (symbols[this.mode][nucleus.text]) { + this.consume(); + // Otherwise if this is a no-argument function, find the type it + // corresponds to in the symbols map + return new ParseFuncOrArgument( + new ParseNode(symbols[this.mode][nucleus.text].group, + nucleus.text, this.mode, nucleus), + false, nucleus); + } else if (this.mode === "text" && cjkRegex.test(nucleus.text)) { + this.consume(); + return new ParseFuncOrArgument( + new ParseNode("textord", nucleus.text, this.mode, nucleus), + false, nucleus); + } else { + return null; + } +}; + +Parser.prototype.ParseNode = ParseNode; + +module.exports = Parser; + +},{"./MacroExpander":4,"./ParseError":6,"./environments":16,"./functions":19,"./parseData":21,"./symbols":23,"./unicodeRegexes":24,"./utils":25}],8:[function(require,module,exports){ +/** + * This is a module for storing settings passed into KaTeX. It correctly handles + * default settings. + */ + +/** + * Helper function for getting a default value if the value is undefined + */ +function get(option, defaultValue) { + return option === undefined ? defaultValue : option; +} + +/** + * The main Settings object + * + * The current options stored are: + * - displayMode: Whether the expression should be typeset by default in + * textstyle or displaystyle (default false) + */ +function Settings(options) { + // allow null options + options = options || {}; + this.displayMode = get(options.displayMode, false); + this.throwOnError = get(options.throwOnError, true); + this.errorColor = get(options.errorColor, "#cc0000"); + this.macros = options.macros || {}; +} + +module.exports = Settings; + +},{}],9:[function(require,module,exports){ +/** + * This file contains information and classes for the various kinds of styles + * used in TeX. It provides a generic `Style` class, which holds information + * about a specific style. It then provides instances of all the different kinds + * of styles possible, and provides functions to move between them and get + * information about them. + */ + +/** + * The main style class. Contains a unique id for the style, a size (which is + * the same for cramped and uncramped version of a style), a cramped flag, and a + * size multiplier, which gives the size difference between a style and + * textstyle. + */ +function Style(id, size, multiplier, cramped) { + this.id = id; + this.size = size; + this.cramped = cramped; + this.sizeMultiplier = multiplier; +} + +/** + * Get the style of a superscript given a base in the current style. + */ +Style.prototype.sup = function() { + return styles[sup[this.id]]; +}; + +/** + * Get the style of a subscript given a base in the current style. + */ +Style.prototype.sub = function() { + return styles[sub[this.id]]; +}; + +/** + * Get the style of a fraction numerator given the fraction in the current + * style. + */ +Style.prototype.fracNum = function() { + return styles[fracNum[this.id]]; +}; + +/** + * Get the style of a fraction denominator given the fraction in the current + * style. + */ +Style.prototype.fracDen = function() { + return styles[fracDen[this.id]]; +}; + +/** + * Get the cramped version of a style (in particular, cramping a cramped style + * doesn't change the style). + */ +Style.prototype.cramp = function() { + return styles[cramp[this.id]]; +}; + +/** + * HTML class name, like "displaystyle cramped" + */ +Style.prototype.cls = function() { + return sizeNames[this.size] + (this.cramped ? " cramped" : " uncramped"); +}; + +/** + * HTML Reset class name, like "reset-textstyle" + */ +Style.prototype.reset = function() { + return resetNames[this.size]; +}; + +// IDs of the different styles +var D = 0; +var Dc = 1; +var T = 2; +var Tc = 3; +var S = 4; +var Sc = 5; +var SS = 6; +var SSc = 7; + +// String names for the different sizes +var sizeNames = [ + "displaystyle textstyle", + "textstyle", + "scriptstyle", + "scriptscriptstyle", +]; + +// Reset names for the different sizes +var resetNames = [ + "reset-textstyle", + "reset-textstyle", + "reset-scriptstyle", + "reset-scriptscriptstyle", +]; + +// Instances of the different styles +var styles = [ + new Style(D, 0, 1.0, false), + new Style(Dc, 0, 1.0, true), + new Style(T, 1, 1.0, false), + new Style(Tc, 1, 1.0, true), + new Style(S, 2, 0.7, false), + new Style(Sc, 2, 0.7, true), + new Style(SS, 3, 0.5, false), + new Style(SSc, 3, 0.5, true), +]; + +// Lookup tables for switching from one style to another +var sup = [S, Sc, S, Sc, SS, SSc, SS, SSc]; +var sub = [Sc, Sc, Sc, Sc, SSc, SSc, SSc, SSc]; +var fracNum = [T, Tc, S, Sc, SS, SSc, SS, SSc]; +var fracDen = [Tc, Tc, Sc, Sc, SSc, SSc, SSc, SSc]; +var cramp = [Dc, Dc, Tc, Tc, Sc, Sc, SSc, SSc]; + +// We only export some of the styles. Also, we don't export the `Style` class so +// no more styles can be generated. +module.exports = { + DISPLAY: styles[D], + TEXT: styles[T], + SCRIPT: styles[S], + SCRIPTSCRIPT: styles[SS], +}; + +},{}],10:[function(require,module,exports){ +/* eslint no-console:0 */ +/** + * This module contains general functions that can be used for building + * different kinds of domTree nodes in a consistent manner. + */ + +var domTree = require("./domTree"); +var fontMetrics = require("./fontMetrics"); +var symbols = require("./symbols"); +var utils = require("./utils"); + +var greekCapitals = [ + "\\Gamma", + "\\Delta", + "\\Theta", + "\\Lambda", + "\\Xi", + "\\Pi", + "\\Sigma", + "\\Upsilon", + "\\Phi", + "\\Psi", + "\\Omega", +]; + +// The following have to be loaded from Main-Italic font, using class mainit +var mainitLetters = [ + "\u0131", // dotless i, \imath + "\u0237", // dotless j, \jmath + "\u00a3", // \pounds +]; + +/** + * Makes a symbolNode after translation via the list of symbols in symbols.js. + * Correctly pulls out metrics for the character, and optionally takes a list of + * classes to be attached to the node. + */ +var makeSymbol = function(value, style, mode, color, classes) { + // Replace the value with its replaced value from symbol.js + if (symbols[mode][value] && symbols[mode][value].replace) { + value = symbols[mode][value].replace; + } + + var metrics = fontMetrics.getCharacterMetrics(value, style); + + var symbolNode; + if (metrics) { + symbolNode = new domTree.symbolNode( + value, metrics.height, metrics.depth, metrics.italic, metrics.skew, + classes); + } else { + // TODO(emily): Figure out a good way to only print this in development + typeof console !== "undefined" && console.warn( + "No character metrics for '" + value + "' in style '" + + style + "'"); + symbolNode = new domTree.symbolNode(value, 0, 0, 0, 0, classes); + } + + if (color) { + symbolNode.style.color = color; + } + + return symbolNode; +}; + +/** + * Makes a symbol in Main-Regular or AMS-Regular. + * Used for rel, bin, open, close, inner, and punct. + */ +var mathsym = function(value, mode, color, classes) { + // Decide what font to render the symbol in by its entry in the symbols + // table. + // Have a special case for when the value = \ because the \ is used as a + // textord in unsupported command errors but cannot be parsed as a regular + // text ordinal and is therefore not present as a symbol in the symbols + // table for text + if (value === "\\" || symbols[mode][value].font === "main") { + return makeSymbol(value, "Main-Regular", mode, color, classes); + } else { + return makeSymbol( + value, "AMS-Regular", mode, color, classes.concat(["amsrm"])); + } +}; + +/** + * Makes a symbol in the default font for mathords and textords. + */ +var mathDefault = function(value, mode, color, classes, type) { + if (type === "mathord") { + return mathit(value, mode, color, classes); + } else if (type === "textord") { + return makeSymbol( + value, "Main-Regular", mode, color, classes.concat(["mathrm"])); + } else { + throw new Error("unexpected type: " + type + " in mathDefault"); + } +}; + +/** + * Makes a symbol in the italic math font. + */ +var mathit = function(value, mode, color, classes) { + if (/[0-9]/.test(value.charAt(0)) || + // glyphs for \imath and \jmath do not exist in Math-Italic so we + // need to use Main-Italic instead + utils.contains(mainitLetters, value) || + utils.contains(greekCapitals, value)) { + return makeSymbol( + value, "Main-Italic", mode, color, classes.concat(["mainit"])); + } else { + return makeSymbol( + value, "Math-Italic", mode, color, classes.concat(["mathit"])); + } +}; + +/** + * Makes either a mathord or textord in the correct font and color. + */ +var makeOrd = function(group, options, type) { + var mode = group.mode; + var value = group.value; + if (symbols[mode][value] && symbols[mode][value].replace) { + value = symbols[mode][value].replace; + } + + var classes = ["mord"]; + var color = options.getColor(); + + var font = options.font; + if (font) { + if (font === "mathit" || utils.contains(mainitLetters, value)) { + return mathit(value, mode, color, classes); + } else { + var fontName = fontMap[font].fontName; + if (fontMetrics.getCharacterMetrics(value, fontName)) { + return makeSymbol( + value, fontName, mode, color, classes.concat([font])); + } else { + return mathDefault(value, mode, color, classes, type); + } + } + } else { + return mathDefault(value, mode, color, classes, type); + } +}; + +/** + * Calculate the height, depth, and maxFontSize of an element based on its + * children. + */ +var sizeElementFromChildren = function(elem) { + var height = 0; + var depth = 0; + var maxFontSize = 0; + + if (elem.children) { + for (var i = 0; i < elem.children.length; i++) { + if (elem.children[i].height > height) { + height = elem.children[i].height; + } + if (elem.children[i].depth > depth) { + depth = elem.children[i].depth; + } + if (elem.children[i].maxFontSize > maxFontSize) { + maxFontSize = elem.children[i].maxFontSize; + } + } + } + + elem.height = height; + elem.depth = depth; + elem.maxFontSize = maxFontSize; +}; + +/** + * Makes a span with the given list of classes, list of children, and color. + */ +var makeSpan = function(classes, children, color) { + var span = new domTree.span(classes, children); + + sizeElementFromChildren(span); + + if (color) { + span.style.color = color; + } + + return span; +}; + +/** + * Makes a document fragment with the given list of children. + */ +var makeFragment = function(children) { + var fragment = new domTree.documentFragment(children); + + sizeElementFromChildren(fragment); + + return fragment; +}; + +/** + * Makes an element placed in each of the vlist elements to ensure that each + * element has the same max font size. To do this, we create a zero-width space + * with the correct font size. + */ +var makeFontSizer = function(options, fontSize) { + var fontSizeInner = makeSpan([], [new domTree.symbolNode("\u200b")]); + fontSizeInner.style.fontSize = + (fontSize / options.style.sizeMultiplier) + "em"; + + var fontSizer = makeSpan( + ["fontsize-ensurer", "reset-" + options.size, "size5"], + [fontSizeInner]); + + return fontSizer; +}; + +/** + * Makes a vertical list by stacking elements and kerns on top of each other. + * Allows for many different ways of specifying the positioning method. + * + * Arguments: + * - children: A list of child or kern nodes to be stacked on top of each other + * (i.e. the first element will be at the bottom, and the last at + * the top). Element nodes are specified as + * {type: "elem", elem: node} + * while kern nodes are specified as + * {type: "kern", size: size} + * - positionType: The method by which the vlist should be positioned. Valid + * values are: + * - "individualShift": The children list only contains elem + * nodes, and each node contains an extra + * "shift" value of how much it should be + * shifted (note that shifting is always + * moving downwards). positionData is + * ignored. + * - "top": The positionData specifies the topmost point of + * the vlist (note this is expected to be a height, + * so positive values move up) + * - "bottom": The positionData specifies the bottommost point + * of the vlist (note this is expected to be a + * depth, so positive values move down + * - "shift": The vlist will be positioned such that its + * baseline is positionData away from the baseline + * of the first child. Positive values move + * downwards. + * - "firstBaseline": The vlist will be positioned such that + * its baseline is aligned with the + * baseline of the first child. + * positionData is ignored. (this is + * equivalent to "shift" with + * positionData=0) + * - positionData: Data used in different ways depending on positionType + * - options: An Options object + * + */ +var makeVList = function(children, positionType, positionData, options) { + var depth; + var currPos; + var i; + if (positionType === "individualShift") { + var oldChildren = children; + children = [oldChildren[0]]; + + // Add in kerns to the list of children to get each element to be + // shifted to the correct specified shift + depth = -oldChildren[0].shift - oldChildren[0].elem.depth; + currPos = depth; + for (i = 1; i < oldChildren.length; i++) { + var diff = -oldChildren[i].shift - currPos - + oldChildren[i].elem.depth; + var size = diff - + (oldChildren[i - 1].elem.height + + oldChildren[i - 1].elem.depth); + + currPos = currPos + diff; + + children.push({type: "kern", size: size}); + children.push(oldChildren[i]); + } + } else if (positionType === "top") { + // We always start at the bottom, so calculate the bottom by adding up + // all the sizes + var bottom = positionData; + for (i = 0; i < children.length; i++) { + if (children[i].type === "kern") { + bottom -= children[i].size; + } else { + bottom -= children[i].elem.height + children[i].elem.depth; + } + } + depth = bottom; + } else if (positionType === "bottom") { + depth = -positionData; + } else if (positionType === "shift") { + depth = -children[0].elem.depth - positionData; + } else if (positionType === "firstBaseline") { + depth = -children[0].elem.depth; + } else { + depth = 0; + } + + // Make the fontSizer + var maxFontSize = 0; + for (i = 0; i < children.length; i++) { + if (children[i].type === "elem") { + maxFontSize = Math.max(maxFontSize, children[i].elem.maxFontSize); + } + } + var fontSizer = makeFontSizer(options, maxFontSize); + + // Create a new list of actual children at the correct offsets + var realChildren = []; + currPos = depth; + for (i = 0; i < children.length; i++) { + if (children[i].type === "kern") { + currPos += children[i].size; + } else { + var child = children[i].elem; + + var shift = -child.depth - currPos; + currPos += child.height + child.depth; + + var childWrap = makeSpan([], [fontSizer, child]); + childWrap.height -= shift; + childWrap.depth += shift; + childWrap.style.top = shift + "em"; + + realChildren.push(childWrap); + } + } + + // Add in an element at the end with no offset to fix the calculation of + // baselines in some browsers (namely IE, sometimes safari) + var baselineFix = makeSpan( + ["baseline-fix"], [fontSizer, new domTree.symbolNode("\u200b")]); + realChildren.push(baselineFix); + + var vlist = makeSpan(["vlist"], realChildren); + // Fix the final height and depth, in case there were kerns at the ends + // since the makeSpan calculation won't take that in to account. + vlist.height = Math.max(currPos, vlist.height); + vlist.depth = Math.max(-depth, vlist.depth); + return vlist; +}; + +// A table of size -> font size for the different sizing functions +var sizingMultiplier = { + size1: 0.5, + size2: 0.7, + size3: 0.8, + size4: 0.9, + size5: 1.0, + size6: 1.2, + size7: 1.44, + size8: 1.73, + size9: 2.07, + size10: 2.49, +}; + +// A map of spacing functions to their attributes, like size and corresponding +// CSS class +var spacingFunctions = { + "\\qquad": { + size: "2em", + className: "qquad", + }, + "\\quad": { + size: "1em", + className: "quad", + }, + "\\enspace": { + size: "0.5em", + className: "enspace", + }, + "\\;": { + size: "0.277778em", + className: "thickspace", + }, + "\\:": { + size: "0.22222em", + className: "mediumspace", + }, + "\\,": { + size: "0.16667em", + className: "thinspace", + }, + "\\!": { + size: "-0.16667em", + className: "negativethinspace", + }, +}; + +/** + * Maps TeX font commands to objects containing: + * - variant: string used for "mathvariant" attribute in buildMathML.js + * - fontName: the "style" parameter to fontMetrics.getCharacterMetrics + */ +// A map between tex font commands an MathML mathvariant attribute values +var fontMap = { + // styles + "mathbf": { + variant: "bold", + fontName: "Main-Bold", + }, + "mathrm": { + variant: "normal", + fontName: "Main-Regular", + }, + + // "mathit" is missing because it requires the use of two fonts: Main-Italic + // and Math-Italic. This is handled by a special case in makeOrd which ends + // up calling mathit. + + // families + "mathbb": { + variant: "double-struck", + fontName: "AMS-Regular", + }, + "mathcal": { + variant: "script", + fontName: "Caligraphic-Regular", + }, + "mathfrak": { + variant: "fraktur", + fontName: "Fraktur-Regular", + }, + "mathscr": { + variant: "script", + fontName: "Script-Regular", + }, + "mathsf": { + variant: "sans-serif", + fontName: "SansSerif-Regular", + }, + "mathtt": { + variant: "monospace", + fontName: "Typewriter-Regular", + }, +}; + +module.exports = { + fontMap: fontMap, + makeSymbol: makeSymbol, + mathsym: mathsym, + makeSpan: makeSpan, + makeFragment: makeFragment, + makeVList: makeVList, + makeOrd: makeOrd, + sizingMultiplier: sizingMultiplier, + spacingFunctions: spacingFunctions, +}; + +},{"./domTree":15,"./fontMetrics":17,"./symbols":23,"./utils":25}],11:[function(require,module,exports){ +/* eslint no-console:0 */ +/** + * This file does the main work of building a domTree structure from a parse + * tree. The entry point is the `buildHTML` function, which takes a parse tree. + * Then, the buildExpression, buildGroup, and various groupTypes functions are + * called, to produce a final HTML tree. + */ + +var ParseError = require("./ParseError"); +var Style = require("./Style"); + +var buildCommon = require("./buildCommon"); +var delimiter = require("./delimiter"); +var domTree = require("./domTree"); +var fontMetrics = require("./fontMetrics"); +var utils = require("./utils"); + +var makeSpan = buildCommon.makeSpan; + +/** + * Take a list of nodes, build them in order, and return a list of the built + * nodes. This function handles the `prev` node correctly, and passes the + * previous element from the list as the prev of the next element. + */ +var buildExpression = function(expression, options, prev) { + var groups = []; + for (var i = 0; i < expression.length; i++) { + var group = expression[i]; + groups.push(buildGroup(group, options, prev)); + prev = group; + } + return groups; +}; + +// List of types used by getTypeOfGroup, +// see https://github.com/Khan/KaTeX/wiki/Examining-TeX#group-types +var groupToType = { + mathord: "mord", + textord: "mord", + bin: "mbin", + rel: "mrel", + text: "mord", + open: "mopen", + close: "mclose", + inner: "minner", + genfrac: "mord", + array: "mord", + spacing: "mord", + punct: "mpunct", + ordgroup: "mord", + op: "mop", + katex: "mord", + overline: "mord", + underline: "mord", + rule: "mord", + leftright: "minner", + sqrt: "mord", + accent: "mord", +}; + +/** + * Gets the final math type of an expression, given its group type. This type is + * used to determine spacing between elements, and affects bin elements by + * causing them to change depending on what types are around them. This type + * must be attached to the outermost node of an element as a CSS class so that + * spacing with its surrounding elements works correctly. + * + * Some elements can be mapped one-to-one from group type to math type, and + * those are listed in the `groupToType` table. + * + * Others (usually elements that wrap around other elements) often have + * recursive definitions, and thus call `getTypeOfGroup` on their inner + * elements. + */ +var getTypeOfGroup = function(group) { + if (group == null) { + // Like when typesetting $^3$ + return groupToType.mathord; + } else if (group.type === "supsub") { + return getTypeOfGroup(group.value.base); + } else if (group.type === "llap" || group.type === "rlap") { + return getTypeOfGroup(group.value); + } else if (group.type === "color") { + return getTypeOfGroup(group.value.value); + } else if (group.type === "sizing") { + return getTypeOfGroup(group.value.value); + } else if (group.type === "styling") { + return getTypeOfGroup(group.value.value); + } else if (group.type === "delimsizing") { + return groupToType[group.value.delimType]; + } else { + return groupToType[group.type]; + } +}; + +/** + * Sometimes, groups perform special rules when they have superscripts or + * subscripts attached to them. This function lets the `supsub` group know that + * its inner element should handle the superscripts and subscripts instead of + * handling them itself. + */ +var shouldHandleSupSub = function(group, options) { + if (!group) { + return false; + } else if (group.type === "op") { + // Operators handle supsubs differently when they have limits + // (e.g. `\displaystyle\sum_2^3`) + return group.value.limits && + (options.style.size === Style.DISPLAY.size || + group.value.alwaysHandleSupSub); + } else if (group.type === "accent") { + return isCharacterBox(group.value.base); + } else { + return null; + } +}; + +/** + * Sometimes we want to pull out the innermost element of a group. In most + * cases, this will just be the group itself, but when ordgroups and colors have + * a single element, we want to pull that out. + */ +var getBaseElem = function(group) { + if (!group) { + return false; + } else if (group.type === "ordgroup") { + if (group.value.length === 1) { + return getBaseElem(group.value[0]); + } else { + return group; + } + } else if (group.type === "color") { + if (group.value.value.length === 1) { + return getBaseElem(group.value.value[0]); + } else { + return group; + } + } else if (group.type === "font") { + return getBaseElem(group.value.body); + } else { + return group; + } +}; + +/** + * TeXbook algorithms often reference "character boxes", which are simply groups + * with a single character in them. To decide if something is a character box, + * we find its innermost group, and see if it is a single character. + */ +var isCharacterBox = function(group) { + var baseElem = getBaseElem(group); + + // These are all they types of groups which hold single characters + return baseElem.type === "mathord" || + baseElem.type === "textord" || + baseElem.type === "bin" || + baseElem.type === "rel" || + baseElem.type === "inner" || + baseElem.type === "open" || + baseElem.type === "close" || + baseElem.type === "punct"; +}; + +var makeNullDelimiter = function(options) { + return makeSpan([ + "sizing", "reset-" + options.size, "size5", + options.style.reset(), Style.TEXT.cls(), + "nulldelimiter", + ]); +}; + +/** + * This is a map of group types to the function used to handle that type. + * Simpler types come at the beginning, while complicated types come afterwards. + */ +var groupTypes = {}; + +groupTypes.mathord = function(group, options, prev) { + return buildCommon.makeOrd(group, options, "mathord"); +}; + +groupTypes.textord = function(group, options, prev) { + return buildCommon.makeOrd(group, options, "textord"); +}; + +groupTypes.bin = function(group, options, prev) { + var className = "mbin"; + // Pull out the most recent element. Do some special handling to find + // things at the end of a \color group. Note that we don't use the same + // logic for ordgroups (which count as ords). + var prevAtom = prev; + while (prevAtom && prevAtom.type === "color") { + var atoms = prevAtom.value.value; + prevAtom = atoms[atoms.length - 1]; + } + // See TeXbook pg. 442-446, Rules 5 and 6, and the text before Rule 19. + // Here, we determine whether the bin should turn into an ord. We + // currently only apply Rule 5. + if (!prev || utils.contains(["mbin", "mopen", "mrel", "mop", "mpunct"], + getTypeOfGroup(prevAtom))) { + group.type = "textord"; + className = "mord"; + } + + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), [className]); +}; + +groupTypes.rel = function(group, options, prev) { + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), ["mrel"]); +}; + +groupTypes.open = function(group, options, prev) { + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), ["mopen"]); +}; + +groupTypes.close = function(group, options, prev) { + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), ["mclose"]); +}; + +groupTypes.inner = function(group, options, prev) { + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), ["minner"]); +}; + +groupTypes.punct = function(group, options, prev) { + return buildCommon.mathsym( + group.value, group.mode, options.getColor(), ["mpunct"]); +}; + +groupTypes.ordgroup = function(group, options, prev) { + return makeSpan( + ["mord", options.style.cls()], + buildExpression(group.value, options.reset()) + ); +}; + +groupTypes.text = function(group, options, prev) { + return makeSpan(["text", "mord", options.style.cls()], + buildExpression(group.value.body, options.reset())); +}; + +groupTypes.color = function(group, options, prev) { + var elements = buildExpression( + group.value.value, + options.withColor(group.value.color), + prev + ); + + // \color isn't supposed to affect the type of the elements it contains. + // To accomplish this, we wrap the results in a fragment, so the inner + // elements will be able to directly interact with their neighbors. For + // example, `\color{red}{2 +} 3` has the same spacing as `2 + 3` + return new buildCommon.makeFragment(elements); +}; + +groupTypes.supsub = function(group, options, prev) { + // Superscript and subscripts are handled in the TeXbook on page + // 445-446, rules 18(a-f). + + // Here is where we defer to the inner group if it should handle + // superscripts and subscripts itself. + if (shouldHandleSupSub(group.value.base, options)) { + return groupTypes[group.value.base.type](group, options, prev); + } + + var base = buildGroup(group.value.base, options.reset()); + var supmid; + var submid; + var sup; + var sub; + + if (group.value.sup) { + sup = buildGroup(group.value.sup, + options.withStyle(options.style.sup())); + supmid = makeSpan( + [options.style.reset(), options.style.sup().cls()], [sup]); + } + + if (group.value.sub) { + sub = buildGroup(group.value.sub, + options.withStyle(options.style.sub())); + submid = makeSpan( + [options.style.reset(), options.style.sub().cls()], [sub]); + } + + // Rule 18a + var supShift; + var subShift; + if (isCharacterBox(group.value.base)) { + supShift = 0; + subShift = 0; + } else { + supShift = base.height - fontMetrics.metrics.supDrop; + subShift = base.depth + fontMetrics.metrics.subDrop; + } + + // Rule 18c + var minSupShift; + if (options.style === Style.DISPLAY) { + minSupShift = fontMetrics.metrics.sup1; + } else if (options.style.cramped) { + minSupShift = fontMetrics.metrics.sup3; + } else { + minSupShift = fontMetrics.metrics.sup2; + } + + // scriptspace is a font-size-independent size, so scale it + // appropriately + var multiplier = Style.TEXT.sizeMultiplier * + options.style.sizeMultiplier; + var scriptspace = + (0.5 / fontMetrics.metrics.ptPerEm) / multiplier + "em"; + + var supsub; + if (!group.value.sup) { + // Rule 18b + subShift = Math.max( + subShift, fontMetrics.metrics.sub1, + sub.height - 0.8 * fontMetrics.metrics.xHeight); + + supsub = buildCommon.makeVList([ + {type: "elem", elem: submid}, + ], "shift", subShift, options); + + supsub.children[0].style.marginRight = scriptspace; + + // Subscripts shouldn't be shifted by the base's italic correction. + // Account for that by shifting the subscript back the appropriate + // amount. Note we only do this when the base is a single symbol. + if (base instanceof domTree.symbolNode) { + supsub.children[0].style.marginLeft = -base.italic + "em"; + } + } else if (!group.value.sub) { + // Rule 18c, d + supShift = Math.max(supShift, minSupShift, + sup.depth + 0.25 * fontMetrics.metrics.xHeight); + + supsub = buildCommon.makeVList([ + {type: "elem", elem: supmid}, + ], "shift", -supShift, options); + + supsub.children[0].style.marginRight = scriptspace; + } else { + supShift = Math.max( + supShift, minSupShift, + sup.depth + 0.25 * fontMetrics.metrics.xHeight); + subShift = Math.max(subShift, fontMetrics.metrics.sub2); + + var ruleWidth = fontMetrics.metrics.defaultRuleThickness; + + // Rule 18e + if ((supShift - sup.depth) - (sub.height - subShift) < + 4 * ruleWidth) { + subShift = 4 * ruleWidth - (supShift - sup.depth) + sub.height; + var psi = 0.8 * fontMetrics.metrics.xHeight - + (supShift - sup.depth); + if (psi > 0) { + supShift += psi; + subShift -= psi; + } + } + + supsub = buildCommon.makeVList([ + {type: "elem", elem: submid, shift: subShift}, + {type: "elem", elem: supmid, shift: -supShift}, + ], "individualShift", null, options); + + // See comment above about subscripts not being shifted + if (base instanceof domTree.symbolNode) { + supsub.children[0].style.marginLeft = -base.italic + "em"; + } + + supsub.children[0].style.marginRight = scriptspace; + supsub.children[1].style.marginRight = scriptspace; + } + + // We ensure to wrap the supsub vlist in a span.msupsub to reset text-align + return makeSpan([getTypeOfGroup(group.value.base)], + [base, makeSpan(["msupsub"], [supsub])]); +}; + +groupTypes.genfrac = function(group, options, prev) { + // Fractions are handled in the TeXbook on pages 444-445, rules 15(a-e). + // Figure out what style this fraction should be in based on the + // function used + var fstyle = options.style; + if (group.value.size === "display") { + fstyle = Style.DISPLAY; + } else if (group.value.size === "text") { + fstyle = Style.TEXT; + } + + var nstyle = fstyle.fracNum(); + var dstyle = fstyle.fracDen(); + + var numer = buildGroup(group.value.numer, options.withStyle(nstyle)); + var numerreset = makeSpan([fstyle.reset(), nstyle.cls()], [numer]); + + var denom = buildGroup(group.value.denom, options.withStyle(dstyle)); + var denomreset = makeSpan([fstyle.reset(), dstyle.cls()], [denom]); + + var ruleWidth; + if (group.value.hasBarLine) { + ruleWidth = fontMetrics.metrics.defaultRuleThickness / + options.style.sizeMultiplier; + } else { + ruleWidth = 0; + } + + // Rule 15b + var numShift; + var clearance; + var denomShift; + if (fstyle.size === Style.DISPLAY.size) { + numShift = fontMetrics.metrics.num1; + if (ruleWidth > 0) { + clearance = 3 * ruleWidth; + } else { + clearance = 7 * fontMetrics.metrics.defaultRuleThickness; + } + denomShift = fontMetrics.metrics.denom1; + } else { + if (ruleWidth > 0) { + numShift = fontMetrics.metrics.num2; + clearance = ruleWidth; + } else { + numShift = fontMetrics.metrics.num3; + clearance = 3 * fontMetrics.metrics.defaultRuleThickness; + } + denomShift = fontMetrics.metrics.denom2; + } + + var frac; + if (ruleWidth === 0) { + // Rule 15c + var candiateClearance = + (numShift - numer.depth) - (denom.height - denomShift); + if (candiateClearance < clearance) { + numShift += 0.5 * (clearance - candiateClearance); + denomShift += 0.5 * (clearance - candiateClearance); + } + + frac = buildCommon.makeVList([ + {type: "elem", elem: denomreset, shift: denomShift}, + {type: "elem", elem: numerreset, shift: -numShift}, + ], "individualShift", null, options); + } else { + // Rule 15d + var axisHeight = fontMetrics.metrics.axisHeight; + + if ((numShift - numer.depth) - (axisHeight + 0.5 * ruleWidth) < + clearance) { + numShift += + clearance - ((numShift - numer.depth) - + (axisHeight + 0.5 * ruleWidth)); + } + + if ((axisHeight - 0.5 * ruleWidth) - (denom.height - denomShift) < + clearance) { + denomShift += + clearance - ((axisHeight - 0.5 * ruleWidth) - + (denom.height - denomShift)); + } + + var mid = makeSpan( + [options.style.reset(), Style.TEXT.cls(), "frac-line"]); + // Manually set the height of the line because its height is + // created in CSS + mid.height = ruleWidth; + + var midShift = -(axisHeight - 0.5 * ruleWidth); + + frac = buildCommon.makeVList([ + {type: "elem", elem: denomreset, shift: denomShift}, + {type: "elem", elem: mid, shift: midShift}, + {type: "elem", elem: numerreset, shift: -numShift}, + ], "individualShift", null, options); + } + + // Since we manually change the style sometimes (with \dfrac or \tfrac), + // account for the possible size change here. + frac.height *= fstyle.sizeMultiplier / options.style.sizeMultiplier; + frac.depth *= fstyle.sizeMultiplier / options.style.sizeMultiplier; + + // Rule 15e + var delimSize; + if (fstyle.size === Style.DISPLAY.size) { + delimSize = fontMetrics.metrics.delim1; + } else { + delimSize = fontMetrics.metrics.getDelim2(fstyle); + } + + var leftDelim; + var rightDelim; + if (group.value.leftDelim == null) { + leftDelim = makeNullDelimiter(options); + } else { + leftDelim = delimiter.customSizedDelim( + group.value.leftDelim, delimSize, true, + options.withStyle(fstyle), group.mode); + } + if (group.value.rightDelim == null) { + rightDelim = makeNullDelimiter(options); + } else { + rightDelim = delimiter.customSizedDelim( + group.value.rightDelim, delimSize, true, + options.withStyle(fstyle), group.mode); + } + + return makeSpan( + ["mord", options.style.reset(), fstyle.cls()], + [leftDelim, makeSpan(["mfrac"], [frac]), rightDelim], + options.getColor()); +}; + +groupTypes.array = function(group, options, prev) { + var r; + var c; + var nr = group.value.body.length; + var nc = 0; + var body = new Array(nr); + + // Horizontal spacing + var pt = 1 / fontMetrics.metrics.ptPerEm; + var arraycolsep = 5 * pt; // \arraycolsep in article.cls + + // Vertical spacing + var baselineskip = 12 * pt; // see size10.clo + // Default \arraystretch from lttab.dtx + // TODO(gagern): may get redefined once we have user-defined macros + var arraystretch = utils.deflt(group.value.arraystretch, 1); + var arrayskip = arraystretch * baselineskip; + var arstrutHeight = 0.7 * arrayskip; // \strutbox in ltfsstrc.dtx and + var arstrutDepth = 0.3 * arrayskip; // \@arstrutbox in lttab.dtx + + var totalHeight = 0; + for (r = 0; r < group.value.body.length; ++r) { + var inrow = group.value.body[r]; + var height = arstrutHeight; // \@array adds an \@arstrut + var depth = arstrutDepth; // to each tow (via the template) + + if (nc < inrow.length) { + nc = inrow.length; + } + + var outrow = new Array(inrow.length); + for (c = 0; c < inrow.length; ++c) { + var elt = buildGroup(inrow[c], options); + if (depth < elt.depth) { + depth = elt.depth; + } + if (height < elt.height) { + height = elt.height; + } + outrow[c] = elt; + } + + var gap = 0; + if (group.value.rowGaps[r]) { + gap = group.value.rowGaps[r].value; + switch (gap.unit) { + case "em": + gap = gap.number; + break; + case "ex": + gap = gap.number * fontMetrics.metrics.emPerEx; + break; + default: + console.error("Can't handle unit " + gap.unit); + gap = 0; + } + if (gap > 0) { // \@argarraycr + gap += arstrutDepth; + if (depth < gap) { + depth = gap; // \@xargarraycr + } + gap = 0; + } + } + + outrow.height = height; + outrow.depth = depth; + totalHeight += height; + outrow.pos = totalHeight; + totalHeight += depth + gap; // \@yargarraycr + body[r] = outrow; + } + + var offset = totalHeight / 2 + fontMetrics.metrics.axisHeight; + var colDescriptions = group.value.cols || []; + var cols = []; + var colSep; + var colDescrNum; + for (c = 0, colDescrNum = 0; + // Continue while either there are more columns or more column + // descriptions, so trailing separators don't get lost. + c < nc || colDescrNum < colDescriptions.length; + ++c, ++colDescrNum) { + + var colDescr = colDescriptions[colDescrNum] || {}; + + var firstSeparator = true; + while (colDescr.type === "separator") { + // If there is more than one separator in a row, add a space + // between them. + if (!firstSeparator) { + colSep = makeSpan(["arraycolsep"], []); + colSep.style.width = + fontMetrics.metrics.doubleRuleSep + "em"; + cols.push(colSep); + } + + if (colDescr.separator === "|") { + var separator = makeSpan( + ["vertical-separator"], + []); + separator.style.height = totalHeight + "em"; + separator.style.verticalAlign = + -(totalHeight - offset) + "em"; + + cols.push(separator); + } else { + throw new ParseError( + "Invalid separator type: " + colDescr.separator); + } + + colDescrNum++; + colDescr = colDescriptions[colDescrNum] || {}; + firstSeparator = false; + } + + if (c >= nc) { + continue; + } + + var sepwidth; + if (c > 0 || group.value.hskipBeforeAndAfter) { + sepwidth = utils.deflt(colDescr.pregap, arraycolsep); + if (sepwidth !== 0) { + colSep = makeSpan(["arraycolsep"], []); + colSep.style.width = sepwidth + "em"; + cols.push(colSep); + } + } + + var col = []; + for (r = 0; r < nr; ++r) { + var row = body[r]; + var elem = row[c]; + if (!elem) { + continue; + } + var shift = row.pos - offset; + elem.depth = row.depth; + elem.height = row.height; + col.push({type: "elem", elem: elem, shift: shift}); + } + + col = buildCommon.makeVList(col, "individualShift", null, options); + col = makeSpan( + ["col-align-" + (colDescr.align || "c")], + [col]); + cols.push(col); + + if (c < nc - 1 || group.value.hskipBeforeAndAfter) { + sepwidth = utils.deflt(colDescr.postgap, arraycolsep); + if (sepwidth !== 0) { + colSep = makeSpan(["arraycolsep"], []); + colSep.style.width = sepwidth + "em"; + cols.push(colSep); + } + } + } + body = makeSpan(["mtable"], cols); + return makeSpan(["mord"], [body], options.getColor()); +}; + +groupTypes.spacing = function(group, options, prev) { + if (group.value === "\\ " || group.value === "\\space" || + group.value === " " || group.value === "~") { + // Spaces are generated by adding an actual space. Each of these + // things has an entry in the symbols table, so these will be turned + // into appropriate outputs. + return makeSpan( + ["mord", "mspace"], + [buildCommon.mathsym(group.value, group.mode)] + ); + } else { + // Other kinds of spaces are of arbitrary width. We use CSS to + // generate these. + return makeSpan( + ["mord", "mspace", + buildCommon.spacingFunctions[group.value].className]); + } +}; + +groupTypes.llap = function(group, options, prev) { + var inner = makeSpan( + ["inner"], [buildGroup(group.value.body, options.reset())]); + var fix = makeSpan(["fix"], []); + return makeSpan( + ["llap", options.style.cls()], [inner, fix]); +}; + +groupTypes.rlap = function(group, options, prev) { + var inner = makeSpan( + ["inner"], [buildGroup(group.value.body, options.reset())]); + var fix = makeSpan(["fix"], []); + return makeSpan( + ["rlap", options.style.cls()], [inner, fix]); +}; + +groupTypes.op = function(group, options, prev) { + // Operators are handled in the TeXbook pg. 443-444, rule 13(a). + var supGroup; + var subGroup; + var hasLimits = false; + if (group.type === "supsub" ) { + // If we have limits, supsub will pass us its group to handle. Pull + // out the superscript and subscript and set the group to the op in + // its base. + supGroup = group.value.sup; + subGroup = group.value.sub; + group = group.value.base; + hasLimits = true; + } + + // Most operators have a large successor symbol, but these don't. + var noSuccessor = [ + "\\smallint", + ]; + + var large = false; + if (options.style.size === Style.DISPLAY.size && + group.value.symbol && + !utils.contains(noSuccessor, group.value.body)) { + + // Most symbol operators get larger in displaystyle (rule 13) + large = true; + } + + var base; + var baseShift = 0; + var slant = 0; + if (group.value.symbol) { + // If this is a symbol, create the symbol. + var style = large ? "Size2-Regular" : "Size1-Regular"; + base = buildCommon.makeSymbol( + group.value.body, style, "math", options.getColor(), + ["op-symbol", large ? "large-op" : "small-op", "mop"]); + + // Shift the symbol so its center lies on the axis (rule 13). It + // appears that our fonts have the centers of the symbols already + // almost on the axis, so these numbers are very small. Note we + // don't actually apply this here, but instead it is used either in + // the vlist creation or separately when there are no limits. + baseShift = (base.height - base.depth) / 2 - + fontMetrics.metrics.axisHeight * + options.style.sizeMultiplier; + + // The slant of the symbol is just its italic correction. + slant = base.italic; + } else { + // Otherwise, this is a text operator. Build the text from the + // operator's name. + // TODO(emily): Add a space in the middle of some of these + // operators, like \limsup + var output = []; + for (var i = 1; i < group.value.body.length; i++) { + output.push(buildCommon.mathsym(group.value.body[i], group.mode)); + } + base = makeSpan(["mop"], output, options.getColor()); + } + + if (hasLimits) { + // IE 8 clips \int if it is in a display: inline-block. We wrap it + // in a new span so it is an inline, and works. + base = makeSpan([], [base]); + + var supmid; + var supKern; + var submid; + var subKern; + // We manually have to handle the superscripts and subscripts. This, + // aside from the kern calculations, is copied from supsub. + if (supGroup) { + var sup = buildGroup( + supGroup, options.withStyle(options.style.sup())); + supmid = makeSpan( + [options.style.reset(), options.style.sup().cls()], [sup]); + + supKern = Math.max( + fontMetrics.metrics.bigOpSpacing1, + fontMetrics.metrics.bigOpSpacing3 - sup.depth); + } + + if (subGroup) { + var sub = buildGroup( + subGroup, options.withStyle(options.style.sub())); + submid = makeSpan( + [options.style.reset(), options.style.sub().cls()], + [sub]); + + subKern = Math.max( + fontMetrics.metrics.bigOpSpacing2, + fontMetrics.metrics.bigOpSpacing4 - sub.height); + } + + // Build the final group as a vlist of the possible subscript, base, + // and possible superscript. + var finalGroup; + var top; + var bottom; + if (!supGroup) { + top = base.height - baseShift; + + finalGroup = buildCommon.makeVList([ + {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, + {type: "elem", elem: submid}, + {type: "kern", size: subKern}, + {type: "elem", elem: base}, + ], "top", top, options); + + // Here, we shift the limits by the slant of the symbol. Note + // that we are supposed to shift the limits by 1/2 of the slant, + // but since we are centering the limits adding a full slant of + // margin will shift by 1/2 that. + finalGroup.children[0].style.marginLeft = -slant + "em"; + } else if (!subGroup) { + bottom = base.depth + baseShift; + + finalGroup = buildCommon.makeVList([ + {type: "elem", elem: base}, + {type: "kern", size: supKern}, + {type: "elem", elem: supmid}, + {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, + ], "bottom", bottom, options); + + // See comment above about slants + finalGroup.children[1].style.marginLeft = slant + "em"; + } else if (!supGroup && !subGroup) { + // This case probably shouldn't occur (this would mean the + // supsub was sending us a group with no superscript or + // subscript) but be safe. + return base; + } else { + bottom = fontMetrics.metrics.bigOpSpacing5 + + submid.height + submid.depth + + subKern + + base.depth + baseShift; + + finalGroup = buildCommon.makeVList([ + {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, + {type: "elem", elem: submid}, + {type: "kern", size: subKern}, + {type: "elem", elem: base}, + {type: "kern", size: supKern}, + {type: "elem", elem: supmid}, + {type: "kern", size: fontMetrics.metrics.bigOpSpacing5}, + ], "bottom", bottom, options); + + // See comment above about slants + finalGroup.children[0].style.marginLeft = -slant + "em"; + finalGroup.children[2].style.marginLeft = slant + "em"; + } + + return makeSpan(["mop", "op-limits"], [finalGroup]); + } else { + if (group.value.symbol) { + base.style.top = baseShift + "em"; + } + + return base; + } +}; + +groupTypes.katex = function(group, options, prev) { + // The KaTeX logo. The offsets for the K and a were chosen to look + // good, but the offsets for the T, E, and X were taken from the + // definition of \TeX in TeX (see TeXbook pg. 356) + var k = makeSpan( + ["k"], [buildCommon.mathsym("K", group.mode)]); + var a = makeSpan( + ["a"], [buildCommon.mathsym("A", group.mode)]); + + a.height = (a.height + 0.2) * 0.75; + a.depth = (a.height - 0.2) * 0.75; + + var t = makeSpan( + ["t"], [buildCommon.mathsym("T", group.mode)]); + var e = makeSpan( + ["e"], [buildCommon.mathsym("E", group.mode)]); + + e.height = (e.height - 0.2155); + e.depth = (e.depth + 0.2155); + + var x = makeSpan( + ["x"], [buildCommon.mathsym("X", group.mode)]); + + return makeSpan( + ["katex-logo", "mord"], [k, a, t, e, x], options.getColor()); +}; + +groupTypes.overline = function(group, options, prev) { + // Overlines are handled in the TeXbook pg 443, Rule 9. + + // Build the inner group in the cramped style. + var innerGroup = buildGroup(group.value.body, + options.withStyle(options.style.cramp())); + + var ruleWidth = fontMetrics.metrics.defaultRuleThickness / + options.style.sizeMultiplier; + + // Create the line above the body + var line = makeSpan( + [options.style.reset(), Style.TEXT.cls(), "overline-line"]); + line.height = ruleWidth; + line.maxFontSize = 1.0; + + // Generate the vlist, with the appropriate kerns + var vlist = buildCommon.makeVList([ + {type: "elem", elem: innerGroup}, + {type: "kern", size: 3 * ruleWidth}, + {type: "elem", elem: line}, + {type: "kern", size: ruleWidth}, + ], "firstBaseline", null, options); + + return makeSpan(["overline", "mord"], [vlist], options.getColor()); +}; + +groupTypes.underline = function(group, options, prev) { + // Underlines are handled in the TeXbook pg 443, Rule 10. + + // Build the inner group. + var innerGroup = buildGroup(group.value.body, options); + + var ruleWidth = fontMetrics.metrics.defaultRuleThickness / + options.style.sizeMultiplier; + + // Create the line above the body + var line = makeSpan( + [options.style.reset(), Style.TEXT.cls(), "underline-line"]); + line.height = ruleWidth; + line.maxFontSize = 1.0; + + // Generate the vlist, with the appropriate kerns + var vlist = buildCommon.makeVList([ + {type: "kern", size: ruleWidth}, + {type: "elem", elem: line}, + {type: "kern", size: 3 * ruleWidth}, + {type: "elem", elem: innerGroup}, + ], "top", innerGroup.height, options); + + return makeSpan(["underline", "mord"], [vlist], options.getColor()); +}; + +groupTypes.sqrt = function(group, options, prev) { + // Square roots are handled in the TeXbook pg. 443, Rule 11. + + // First, we do the same steps as in overline to build the inner group + // and line + var inner = buildGroup(group.value.body, + options.withStyle(options.style.cramp())); + + var ruleWidth = fontMetrics.metrics.defaultRuleThickness / + options.style.sizeMultiplier; + + var line = makeSpan( + [options.style.reset(), Style.TEXT.cls(), "sqrt-line"], [], + options.getColor()); + line.height = ruleWidth; + line.maxFontSize = 1.0; + + var phi = ruleWidth; + if (options.style.id < Style.TEXT.id) { + phi = fontMetrics.metrics.xHeight; + } + + // Calculate the clearance between the body and line + var lineClearance = ruleWidth + phi / 4; + + var innerHeight = + (inner.height + inner.depth) * options.style.sizeMultiplier; + var minDelimiterHeight = innerHeight + lineClearance + ruleWidth; + + // Create a \surd delimiter of the required minimum size + var delim = makeSpan(["sqrt-sign"], [ + delimiter.customSizedDelim("\\surd", minDelimiterHeight, + false, options, group.mode)], + options.getColor()); + + var delimDepth = (delim.height + delim.depth) - ruleWidth; + + // Adjust the clearance based on the delimiter size + if (delimDepth > inner.height + inner.depth + lineClearance) { + lineClearance = + (lineClearance + delimDepth - inner.height - inner.depth) / 2; + } + + // Shift the delimiter so that its top lines up with the top of the line + var delimShift = -(inner.height + lineClearance + ruleWidth) + delim.height; + delim.style.top = delimShift + "em"; + delim.height -= delimShift; + delim.depth += delimShift; + + // We add a special case here, because even when `inner` is empty, we + // still get a line. So, we use a simple heuristic to decide if we + // should omit the body entirely. (note this doesn't work for something + // like `\sqrt{\rlap{x}}`, but if someone is doing that they deserve for + // it not to work. + var body; + if (inner.height === 0 && inner.depth === 0) { + body = makeSpan(); + } else { + body = buildCommon.makeVList([ + {type: "elem", elem: inner}, + {type: "kern", size: lineClearance}, + {type: "elem", elem: line}, + {type: "kern", size: ruleWidth}, + ], "firstBaseline", null, options); + } + + if (!group.value.index) { + return makeSpan(["sqrt", "mord"], [delim, body]); + } else { + // Handle the optional root index + + // The index is always in scriptscript style + var root = buildGroup( + group.value.index, + options.withStyle(Style.SCRIPTSCRIPT)); + var rootWrap = makeSpan( + [options.style.reset(), Style.SCRIPTSCRIPT.cls()], + [root]); + + // Figure out the height and depth of the inner part + var innerRootHeight = Math.max(delim.height, body.height); + var innerRootDepth = Math.max(delim.depth, body.depth); + + // The amount the index is shifted by. This is taken from the TeX + // source, in the definition of `\r@@t`. + var toShift = 0.6 * (innerRootHeight - innerRootDepth); + + // Build a VList with the superscript shifted up correctly + var rootVList = buildCommon.makeVList( + [{type: "elem", elem: rootWrap}], + "shift", -toShift, options); + // Add a class surrounding it so we can add on the appropriate + // kerning + var rootVListWrap = makeSpan(["root"], [rootVList]); + + return makeSpan(["sqrt", "mord"], [rootVListWrap, delim, body]); + } +}; + +groupTypes.sizing = function(group, options, prev) { + // Handle sizing operators like \Huge. Real TeX doesn't actually allow + // these functions inside of math expressions, so we do some special + // handling. + var inner = buildExpression(group.value.value, + options.withSize(group.value.size), prev); + + var span = makeSpan(["mord"], + [makeSpan(["sizing", "reset-" + options.size, group.value.size, + options.style.cls()], + inner)]); + + // Calculate the correct maxFontSize manually + var fontSize = buildCommon.sizingMultiplier[group.value.size]; + span.maxFontSize = fontSize * options.style.sizeMultiplier; + + return span; +}; + +groupTypes.styling = function(group, options, prev) { + // Style changes are handled in the TeXbook on pg. 442, Rule 3. + + // Figure out what style we're changing to. + var style = { + "display": Style.DISPLAY, + "text": Style.TEXT, + "script": Style.SCRIPT, + "scriptscript": Style.SCRIPTSCRIPT, + }; + + var newStyle = style[group.value.style]; + + // Build the inner expression in the new style. + var inner = buildExpression( + group.value.value, options.withStyle(newStyle), prev); + + return makeSpan([options.style.reset(), newStyle.cls()], inner); +}; + +groupTypes.font = function(group, options, prev) { + var font = group.value.font; + return buildGroup(group.value.body, options.withFont(font), prev); +}; + +groupTypes.delimsizing = function(group, options, prev) { + var delim = group.value.value; + + if (delim === ".") { + // Empty delimiters still count as elements, even though they don't + // show anything. + return makeSpan([groupToType[group.value.delimType]]); + } + + // Use delimiter.sizedDelim to generate the delimiter. + return makeSpan( + [groupToType[group.value.delimType]], + [delimiter.sizedDelim( + delim, group.value.size, options, group.mode)]); +}; + +groupTypes.leftright = function(group, options, prev) { + // Build the inner expression + var inner = buildExpression(group.value.body, options.reset()); + + var innerHeight = 0; + var innerDepth = 0; + + // Calculate its height and depth + for (var i = 0; i < inner.length; i++) { + innerHeight = Math.max(inner[i].height, innerHeight); + innerDepth = Math.max(inner[i].depth, innerDepth); + } + + // The size of delimiters is the same, regardless of what style we are + // in. Thus, to correctly calculate the size of delimiter we need around + // a group, we scale down the inner size based on the size. + innerHeight *= options.style.sizeMultiplier; + innerDepth *= options.style.sizeMultiplier; + + var leftDelim; + if (group.value.left === ".") { + // Empty delimiters in \left and \right make null delimiter spaces. + leftDelim = makeNullDelimiter(options); + } else { + // Otherwise, use leftRightDelim to generate the correct sized + // delimiter. + leftDelim = delimiter.leftRightDelim( + group.value.left, innerHeight, innerDepth, options, + group.mode); + } + // Add it to the beginning of the expression + inner.unshift(leftDelim); + + var rightDelim; + // Same for the right delimiter + if (group.value.right === ".") { + rightDelim = makeNullDelimiter(options); + } else { + rightDelim = delimiter.leftRightDelim( + group.value.right, innerHeight, innerDepth, options, + group.mode); + } + // Add it to the end of the expression. + inner.push(rightDelim); + + return makeSpan( + ["minner", options.style.cls()], inner, options.getColor()); +}; + +groupTypes.rule = function(group, options, prev) { + // Make an empty span for the rule + var rule = makeSpan(["mord", "rule"], [], options.getColor()); + + // Calculate the shift, width, and height of the rule, and account for units + var shift = 0; + if (group.value.shift) { + shift = group.value.shift.number; + if (group.value.shift.unit === "ex") { + shift *= fontMetrics.metrics.xHeight; + } + } + + var width = group.value.width.number; + if (group.value.width.unit === "ex") { + width *= fontMetrics.metrics.xHeight; + } + + var height = group.value.height.number; + if (group.value.height.unit === "ex") { + height *= fontMetrics.metrics.xHeight; + } + + // The sizes of rules are absolute, so make it larger if we are in a + // smaller style. + shift /= options.style.sizeMultiplier; + width /= options.style.sizeMultiplier; + height /= options.style.sizeMultiplier; + + // Style the rule to the right size + rule.style.borderRightWidth = width + "em"; + rule.style.borderTopWidth = height + "em"; + rule.style.bottom = shift + "em"; + + // Record the height and width + rule.width = width; + rule.height = height + shift; + rule.depth = -shift; + + return rule; +}; + +groupTypes.kern = function(group, options, prev) { + // Make an empty span for the rule + var rule = makeSpan(["mord", "rule"], [], options.getColor()); + + var dimension = 0; + if (group.value.dimension) { + dimension = group.value.dimension.number; + if (group.value.dimension.unit === "ex") { + dimension *= fontMetrics.metrics.xHeight; + } + } + + dimension /= options.style.sizeMultiplier; + + rule.style.marginLeft = dimension + "em"; + + return rule; +}; + +groupTypes.accent = function(group, options, prev) { + // Accents are handled in the TeXbook pg. 443, rule 12. + var base = group.value.base; + + var supsubGroup; + if (group.type === "supsub") { + // If our base is a character box, and we have superscripts and + // subscripts, the supsub will defer to us. In particular, we want + // to attach the superscripts and subscripts to the inner body (so + // that the position of the superscripts and subscripts won't be + // affected by the height of the accent). We accomplish this by + // sticking the base of the accent into the base of the supsub, and + // rendering that, while keeping track of where the accent is. + + // The supsub group is the group that was passed in + var supsub = group; + // The real accent group is the base of the supsub group + group = supsub.value.base; + // The character box is the base of the accent group + base = group.value.base; + // Stick the character box into the base of the supsub group + supsub.value.base = base; + + // Rerender the supsub group with its new base, and store that + // result. + supsubGroup = buildGroup( + supsub, options.reset(), prev); + } + + // Build the base group + var body = buildGroup( + base, options.withStyle(options.style.cramp())); + + // Calculate the skew of the accent. This is based on the line "If the + // nucleus is not a single character, let s = 0; otherwise set s to the + // kern amount for the nucleus followed by the \skewchar of its font." + // Note that our skew metrics are just the kern between each character + // and the skewchar. + var skew; + if (isCharacterBox(base)) { + // If the base is a character box, then we want the skew of the + // innermost character. To do that, we find the innermost character: + var baseChar = getBaseElem(base); + // Then, we render its group to get the symbol inside it + var baseGroup = buildGroup( + baseChar, options.withStyle(options.style.cramp())); + // Finally, we pull the skew off of the symbol. + skew = baseGroup.skew; + // Note that we now throw away baseGroup, because the layers we + // removed with getBaseElem might contain things like \color which + // we can't get rid of. + // TODO(emily): Find a better way to get the skew + } else { + skew = 0; + } + + // calculate the amount of space between the body and the accent + var clearance = Math.min(body.height, fontMetrics.metrics.xHeight); + + // Build the accent + var accent = buildCommon.makeSymbol( + group.value.accent, "Main-Regular", "math", options.getColor()); + // Remove the italic correction of the accent, because it only serves to + // shift the accent over to a place we don't want. + accent.italic = 0; + + // The \vec character that the fonts use is a combining character, and + // thus shows up much too far to the left. To account for this, we add a + // specific class which shifts the accent over to where we want it. + // TODO(emily): Fix this in a better way, like by changing the font + var vecClass = group.value.accent === "\\vec" ? "accent-vec" : null; + + var accentBody = makeSpan(["accent-body", vecClass], [ + makeSpan([], [accent])]); + + accentBody = buildCommon.makeVList([ + {type: "elem", elem: body}, + {type: "kern", size: -clearance}, + {type: "elem", elem: accentBody}, + ], "firstBaseline", null, options); + + // Shift the accent over by the skew. Note we shift by twice the skew + // because we are centering the accent, so by adding 2*skew to the left, + // we shift it to the right by 1*skew. + accentBody.children[1].style.marginLeft = 2 * skew + "em"; + + var accentWrap = makeSpan(["mord", "accent"], [accentBody]); + + if (supsubGroup) { + // Here, we replace the "base" child of the supsub with our newly + // generated accent. + supsubGroup.children[0] = accentWrap; + + // Since we don't rerun the height calculation after replacing the + // accent, we manually recalculate height. + supsubGroup.height = Math.max(accentWrap.height, supsubGroup.height); + + // Accents should always be ords, even when their innards are not. + supsubGroup.classes[0] = "mord"; + + return supsubGroup; + } else { + return accentWrap; + } +}; + +groupTypes.phantom = function(group, options, prev) { + var elements = buildExpression( + group.value.value, + options.withPhantom(), + prev + ); + + // \phantom isn't supposed to affect the elements it contains. + // See "color" for more details. + return new buildCommon.makeFragment(elements); +}; + +/** + * buildGroup is the function that takes a group and calls the correct groupType + * function for it. It also handles the interaction of size and style changes + * between parents and children. + */ +var buildGroup = function(group, options, prev) { + if (!group) { + return makeSpan(); + } + + if (groupTypes[group.type]) { + // Call the groupTypes function + var groupNode = groupTypes[group.type](group, options, prev); + var multiplier; + + // If the style changed between the parent and the current group, + // account for the size difference + if (options.style !== options.parentStyle) { + multiplier = options.style.sizeMultiplier / + options.parentStyle.sizeMultiplier; + + groupNode.height *= multiplier; + groupNode.depth *= multiplier; + } + + // If the size changed between the parent and the current group, account + // for that size difference. + if (options.size !== options.parentSize) { + multiplier = buildCommon.sizingMultiplier[options.size] / + buildCommon.sizingMultiplier[options.parentSize]; + + groupNode.height *= multiplier; + groupNode.depth *= multiplier; + } + + return groupNode; + } else { + throw new ParseError( + "Got group of unknown type: '" + group.type + "'"); + } +}; + +/** + * Take an entire parse tree, and build it into an appropriate set of HTML + * nodes. + */ +var buildHTML = function(tree, options) { + // buildExpression is destructive, so we need to make a clone + // of the incoming tree so that it isn't accidentally changed + tree = JSON.parse(JSON.stringify(tree)); + + // Build the expression contained in the tree + var expression = buildExpression(tree, options); + var body = makeSpan(["base", options.style.cls()], expression); + + // Add struts, which ensure that the top of the HTML element falls at the + // height of the expression, and the bottom of the HTML element falls at the + // depth of the expression. + var topStrut = makeSpan(["strut"]); + var bottomStrut = makeSpan(["strut", "bottom"]); + + topStrut.style.height = body.height + "em"; + bottomStrut.style.height = (body.height + body.depth) + "em"; + // We'd like to use `vertical-align: top` but in IE 9 this lowers the + // baseline of the box to the bottom of this strut (instead staying in the + // normal place) so we use an absolute value for vertical-align instead + bottomStrut.style.verticalAlign = -body.depth + "em"; + + // Wrap the struts and body together + var htmlNode = makeSpan(["katex-html"], [topStrut, bottomStrut, body]); + + htmlNode.setAttribute("aria-hidden", "true"); + + return htmlNode; +}; + +module.exports = buildHTML; + +},{"./ParseError":6,"./Style":9,"./buildCommon":10,"./delimiter":14,"./domTree":15,"./fontMetrics":17,"./utils":25}],12:[function(require,module,exports){ +/** + * This file converts a parse tree into a cooresponding MathML tree. The main + * entry point is the `buildMathML` function, which takes a parse tree from the + * parser. + */ + +var buildCommon = require("./buildCommon"); +var fontMetrics = require("./fontMetrics"); +var mathMLTree = require("./mathMLTree"); +var ParseError = require("./ParseError"); +var symbols = require("./symbols"); +var utils = require("./utils"); + +var makeSpan = buildCommon.makeSpan; +var fontMap = buildCommon.fontMap; + +/** + * Takes a symbol and converts it into a MathML text node after performing + * optional replacement from symbols.js. + */ +var makeText = function(text, mode) { + if (symbols[mode][text] && symbols[mode][text].replace) { + text = symbols[mode][text].replace; + } + + return new mathMLTree.TextNode(text); +}; + +/** + * Returns the math variant as a string or null if none is required. + */ +var getVariant = function(group, options) { + var font = options.font; + if (!font) { + return null; + } + + var mode = group.mode; + if (font === "mathit") { + return "italic"; + } + + var value = group.value; + if (utils.contains(["\\imath", "\\jmath"], value)) { + return null; + } + + if (symbols[mode][value] && symbols[mode][value].replace) { + value = symbols[mode][value].replace; + } + + var fontName = fontMap[font].fontName; + if (fontMetrics.getCharacterMetrics(value, fontName)) { + return fontMap[options.font].variant; + } + + return null; +}; + +/** + * Functions for handling the different types of groups found in the parse + * tree. Each function should take a parse group and return a MathML node. + */ +var groupTypes = {}; + +groupTypes.mathord = function(group, options) { + var node = new mathMLTree.MathNode( + "mi", + [makeText(group.value, group.mode)]); + + var variant = getVariant(group, options); + if (variant) { + node.setAttribute("mathvariant", variant); + } + return node; +}; + +groupTypes.textord = function(group, options) { + var text = makeText(group.value, group.mode); + + var variant = getVariant(group, options) || "normal"; + + var node; + if (/[0-9]/.test(group.value)) { + // TODO(kevinb) merge adjacent <mn> nodes + // do it as a post processing step + node = new mathMLTree.MathNode("mn", [text]); + if (options.font) { + node.setAttribute("mathvariant", variant); + } + } else { + node = new mathMLTree.MathNode("mi", [text]); + node.setAttribute("mathvariant", variant); + } + + return node; +}; + +groupTypes.bin = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + return node; +}; + +groupTypes.rel = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + return node; +}; + +groupTypes.open = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + return node; +}; + +groupTypes.close = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + return node; +}; + +groupTypes.inner = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + return node; +}; + +groupTypes.punct = function(group) { + var node = new mathMLTree.MathNode( + "mo", [makeText(group.value, group.mode)]); + + node.setAttribute("separator", "true"); + + return node; +}; + +groupTypes.ordgroup = function(group, options) { + var inner = buildExpression(group.value, options); + + var node = new mathMLTree.MathNode("mrow", inner); + + return node; +}; + +groupTypes.text = function(group, options) { + var inner = buildExpression(group.value.body, options); + + var node = new mathMLTree.MathNode("mtext", inner); + + return node; +}; + +groupTypes.color = function(group, options) { + var inner = buildExpression(group.value.value, options); + + var node = new mathMLTree.MathNode("mstyle", inner); + + node.setAttribute("mathcolor", group.value.color); + + return node; +}; + +groupTypes.supsub = function(group, options) { + var children = [buildGroup(group.value.base, options)]; + + if (group.value.sub) { + children.push(buildGroup(group.value.sub, options)); + } + + if (group.value.sup) { + children.push(buildGroup(group.value.sup, options)); + } + + var nodeType; + if (!group.value.sub) { + nodeType = "msup"; + } else if (!group.value.sup) { + nodeType = "msub"; + } else { + nodeType = "msubsup"; + } + + var node = new mathMLTree.MathNode(nodeType, children); + + return node; +}; + +groupTypes.genfrac = function(group, options) { + var node = new mathMLTree.MathNode( + "mfrac", + [buildGroup(group.value.numer, options), + buildGroup(group.value.denom, options)]); + + if (!group.value.hasBarLine) { + node.setAttribute("linethickness", "0px"); + } + + if (group.value.leftDelim != null || group.value.rightDelim != null) { + var withDelims = []; + + if (group.value.leftDelim != null) { + var leftOp = new mathMLTree.MathNode( + "mo", [new mathMLTree.TextNode(group.value.leftDelim)]); + + leftOp.setAttribute("fence", "true"); + + withDelims.push(leftOp); + } + + withDelims.push(node); + + if (group.value.rightDelim != null) { + var rightOp = new mathMLTree.MathNode( + "mo", [new mathMLTree.TextNode(group.value.rightDelim)]); + + rightOp.setAttribute("fence", "true"); + + withDelims.push(rightOp); + } + + var outerNode = new mathMLTree.MathNode("mrow", withDelims); + + return outerNode; + } + + return node; +}; + +groupTypes.array = function(group, options) { + return new mathMLTree.MathNode( + "mtable", group.value.body.map(function(row) { + return new mathMLTree.MathNode( + "mtr", row.map(function(cell) { + return new mathMLTree.MathNode( + "mtd", [buildGroup(cell, options)]); + })); + })); +}; + +groupTypes.sqrt = function(group, options) { + var node; + if (group.value.index) { + node = new mathMLTree.MathNode( + "mroot", [ + buildGroup(group.value.body, options), + buildGroup(group.value.index, options), + ]); + } else { + node = new mathMLTree.MathNode( + "msqrt", [buildGroup(group.value.body, options)]); + } + + return node; +}; + +groupTypes.leftright = function(group, options) { + var inner = buildExpression(group.value.body, options); + + if (group.value.left !== ".") { + var leftNode = new mathMLTree.MathNode( + "mo", [makeText(group.value.left, group.mode)]); + + leftNode.setAttribute("fence", "true"); + + inner.unshift(leftNode); + } + + if (group.value.right !== ".") { + var rightNode = new mathMLTree.MathNode( + "mo", [makeText(group.value.right, group.mode)]); + + rightNode.setAttribute("fence", "true"); + + inner.push(rightNode); + } + + var outerNode = new mathMLTree.MathNode("mrow", inner); + + return outerNode; +}; + +groupTypes.accent = function(group, options) { + var accentNode = new mathMLTree.MathNode( + "mo", [makeText(group.value.accent, group.mode)]); + + var node = new mathMLTree.MathNode( + "mover", + [buildGroup(group.value.base, options), + accentNode]); + + node.setAttribute("accent", "true"); + + return node; +}; + +groupTypes.spacing = function(group) { + var node; + + if (group.value === "\\ " || group.value === "\\space" || + group.value === " " || group.value === "~") { + node = new mathMLTree.MathNode( + "mtext", [new mathMLTree.TextNode("\u00a0")]); + } else { + node = new mathMLTree.MathNode("mspace"); + + node.setAttribute( + "width", buildCommon.spacingFunctions[group.value].size); + } + + return node; +}; + +groupTypes.op = function(group) { + var node; + + // TODO(emily): handle big operators using the `largeop` attribute + + if (group.value.symbol) { + // This is a symbol. Just add the symbol. + node = new mathMLTree.MathNode( + "mo", [makeText(group.value.body, group.mode)]); + } else { + // This is a text operator. Add all of the characters from the + // operator's name. + // TODO(emily): Add a space in the middle of some of these + // operators, like \limsup. + node = new mathMLTree.MathNode( + "mi", [new mathMLTree.TextNode(group.value.body.slice(1))]); + } + + return node; +}; + +groupTypes.katex = function(group) { + var node = new mathMLTree.MathNode( + "mtext", [new mathMLTree.TextNode("KaTeX")]); + + return node; +}; + +groupTypes.font = function(group, options) { + var font = group.value.font; + return buildGroup(group.value.body, options.withFont(font)); +}; + +groupTypes.delimsizing = function(group) { + var children = []; + + if (group.value.value !== ".") { + children.push(makeText(group.value.value, group.mode)); + } + + var node = new mathMLTree.MathNode("mo", children); + + if (group.value.delimType === "open" || + group.value.delimType === "close") { + // Only some of the delimsizing functions act as fences, and they + // return "open" or "close" delimTypes. + node.setAttribute("fence", "true"); + } else { + // Explicitly disable fencing if it's not a fence, to override the + // defaults. + node.setAttribute("fence", "false"); + } + + return node; +}; + +groupTypes.styling = function(group, options) { + var inner = buildExpression(group.value.value, options); + + var node = new mathMLTree.MathNode("mstyle", inner); + + var styleAttributes = { + "display": ["0", "true"], + "text": ["0", "false"], + "script": ["1", "false"], + "scriptscript": ["2", "false"], + }; + + var attr = styleAttributes[group.value.style]; + + node.setAttribute("scriptlevel", attr[0]); + node.setAttribute("displaystyle", attr[1]); + + return node; +}; + +groupTypes.sizing = function(group, options) { + var inner = buildExpression(group.value.value, options); + + var node = new mathMLTree.MathNode("mstyle", inner); + + // TODO(emily): This doesn't produce the correct size for nested size + // changes, because we don't keep state of what style we're currently + // in, so we can't reset the size to normal before changing it. Now + // that we're passing an options parameter we should be able to fix + // this. + node.setAttribute( + "mathsize", buildCommon.sizingMultiplier[group.value.size] + "em"); + + return node; +}; + +groupTypes.overline = function(group, options) { + var operator = new mathMLTree.MathNode( + "mo", [new mathMLTree.TextNode("\u203e")]); + operator.setAttribute("stretchy", "true"); + + var node = new mathMLTree.MathNode( + "mover", + [buildGroup(group.value.body, options), + operator]); + node.setAttribute("accent", "true"); + + return node; +}; + +groupTypes.underline = function(group, options) { + var operator = new mathMLTree.MathNode( + "mo", [new mathMLTree.TextNode("\u203e")]); + operator.setAttribute("stretchy", "true"); + + var node = new mathMLTree.MathNode( + "munder", + [buildGroup(group.value.body, options), + operator]); + node.setAttribute("accentunder", "true"); + + return node; +}; + +groupTypes.rule = function(group) { + // TODO(emily): Figure out if there's an actual way to draw black boxes + // in MathML. + var node = new mathMLTree.MathNode("mrow"); + + return node; +}; + +groupTypes.kern = function(group) { + // TODO(kevin): Figure out if there's a way to add space in MathML + var node = new mathMLTree.MathNode("mrow"); + + return node; +}; + +groupTypes.llap = function(group, options) { + var node = new mathMLTree.MathNode( + "mpadded", [buildGroup(group.value.body, options)]); + + node.setAttribute("lspace", "-1width"); + node.setAttribute("width", "0px"); + + return node; +}; + +groupTypes.rlap = function(group, options) { + var node = new mathMLTree.MathNode( + "mpadded", [buildGroup(group.value.body, options)]); + + node.setAttribute("width", "0px"); + + return node; +}; + +groupTypes.phantom = function(group, options, prev) { + var inner = buildExpression(group.value.value, options); + return new mathMLTree.MathNode("mphantom", inner); +}; + +/** + * Takes a list of nodes, builds them, and returns a list of the generated + * MathML nodes. A little simpler than the HTML version because we don't do any + * previous-node handling. + */ +var buildExpression = function(expression, options) { + var groups = []; + for (var i = 0; i < expression.length; i++) { + var group = expression[i]; + groups.push(buildGroup(group, options)); + } + return groups; +}; + +/** + * Takes a group from the parser and calls the appropriate groupTypes function + * on it to produce a MathML node. + */ +var buildGroup = function(group, options) { + if (!group) { + return new mathMLTree.MathNode("mrow"); + } + + if (groupTypes[group.type]) { + // Call the groupTypes function + return groupTypes[group.type](group, options); + } else { + throw new ParseError( + "Got group of unknown type: '" + group.type + "'"); + } +}; + +/** + * Takes a full parse tree and settings and builds a MathML representation of + * it. In particular, we put the elements from building the parse tree into a + * <semantics> tag so we can also include that TeX source as an annotation. + * + * Note that we actually return a domTree element with a `<math>` inside it so + * we can do appropriate styling. + */ +var buildMathML = function(tree, texExpression, options) { + var expression = buildExpression(tree, options); + + // Wrap up the expression in an mrow so it is presented in the semantics + // tag correctly. + var wrapper = new mathMLTree.MathNode("mrow", expression); + + // Build a TeX annotation of the source + var annotation = new mathMLTree.MathNode( + "annotation", [new mathMLTree.TextNode(texExpression)]); + + annotation.setAttribute("encoding", "application/x-tex"); + + var semantics = new mathMLTree.MathNode( + "semantics", [wrapper, annotation]); + + var math = new mathMLTree.MathNode("math", [semantics]); + + // You can't style <math> nodes, so we wrap the node in a span. + return makeSpan(["katex-mathml"], [math]); +}; + +module.exports = buildMathML; + +},{"./ParseError":6,"./buildCommon":10,"./fontMetrics":17,"./mathMLTree":20,"./symbols":23,"./utils":25}],13:[function(require,module,exports){ +var buildHTML = require("./buildHTML"); +var buildMathML = require("./buildMathML"); +var buildCommon = require("./buildCommon"); +var Options = require("./Options"); +var Settings = require("./Settings"); +var Style = require("./Style"); + +var makeSpan = buildCommon.makeSpan; + +var buildTree = function(tree, expression, settings) { + settings = settings || new Settings({}); + + var startStyle = Style.TEXT; + if (settings.displayMode) { + startStyle = Style.DISPLAY; + } + + // Setup the default options + var options = new Options({ + style: startStyle, + size: "size5", + }); + + // `buildHTML` sometimes messes with the parse tree (like turning bins -> + // ords), so we build the MathML version first. + var mathMLNode = buildMathML(tree, expression, options); + var htmlNode = buildHTML(tree, options); + + var katexNode = makeSpan(["katex"], [ + mathMLNode, htmlNode, + ]); + + if (settings.displayMode) { + return makeSpan(["katex-display"], [katexNode]); + } else { + return katexNode; + } +}; + +module.exports = buildTree; + +},{"./Options":5,"./Settings":8,"./Style":9,"./buildCommon":10,"./buildHTML":11,"./buildMathML":12}],14:[function(require,module,exports){ +/** + * This file deals with creating delimiters of various sizes. The TeXbook + * discusses these routines on page 441-442, in the "Another subroutine sets box + * x to a specified variable delimiter" paragraph. + * + * There are three main routines here. `makeSmallDelim` makes a delimiter in the + * normal font, but in either text, script, or scriptscript style. + * `makeLargeDelim` makes a delimiter in textstyle, but in one of the Size1, + * Size2, Size3, or Size4 fonts. `makeStackedDelim` makes a delimiter out of + * smaller pieces that are stacked on top of one another. + * + * The functions take a parameter `center`, which determines if the delimiter + * should be centered around the axis. + * + * Then, there are three exposed functions. `sizedDelim` makes a delimiter in + * one of the given sizes. This is used for things like `\bigl`. + * `customSizedDelim` makes a delimiter with a given total height+depth. It is + * called in places like `\sqrt`. `leftRightDelim` makes an appropriate + * delimiter which surrounds an expression of a given height an depth. It is + * used in `\left` and `\right`. + */ + +var ParseError = require("./ParseError"); +var Style = require("./Style"); + +var buildCommon = require("./buildCommon"); +var fontMetrics = require("./fontMetrics"); +var symbols = require("./symbols"); +var utils = require("./utils"); + +var makeSpan = buildCommon.makeSpan; + +/** + * Get the metrics for a given symbol and font, after transformation (i.e. + * after following replacement from symbols.js) + */ +var getMetrics = function(symbol, font) { + if (symbols.math[symbol] && symbols.math[symbol].replace) { + return fontMetrics.getCharacterMetrics( + symbols.math[symbol].replace, font); + } else { + return fontMetrics.getCharacterMetrics( + symbol, font); + } +}; + +/** + * Builds a symbol in the given font size (note size is an integer) + */ +var mathrmSize = function(value, size, mode) { + return buildCommon.makeSymbol(value, "Size" + size + "-Regular", mode); +}; + +/** + * Puts a delimiter span in a given style, and adds appropriate height, depth, + * and maxFontSizes. + */ +var styleWrap = function(delim, toStyle, options) { + var span = makeSpan( + ["style-wrap", options.style.reset(), toStyle.cls()], [delim]); + + var multiplier = toStyle.sizeMultiplier / options.style.sizeMultiplier; + + span.height *= multiplier; + span.depth *= multiplier; + span.maxFontSize = toStyle.sizeMultiplier; + + return span; +}; + +/** + * Makes a small delimiter. This is a delimiter that comes in the Main-Regular + * font, but is restyled to either be in textstyle, scriptstyle, or + * scriptscriptstyle. + */ +var makeSmallDelim = function(delim, style, center, options, mode) { + var text = buildCommon.makeSymbol(delim, "Main-Regular", mode); + + var span = styleWrap(text, style, options); + + if (center) { + var shift = + (1 - options.style.sizeMultiplier / style.sizeMultiplier) * + fontMetrics.metrics.axisHeight; + + span.style.top = shift + "em"; + span.height -= shift; + span.depth += shift; + } + + return span; +}; + +/** + * Makes a large delimiter. This is a delimiter that comes in the Size1, Size2, + * Size3, or Size4 fonts. It is always rendered in textstyle. + */ +var makeLargeDelim = function(delim, size, center, options, mode) { + var inner = mathrmSize(delim, size, mode); + + var span = styleWrap( + makeSpan(["delimsizing", "size" + size], + [inner], options.getColor()), + Style.TEXT, options); + + if (center) { + var shift = (1 - options.style.sizeMultiplier) * + fontMetrics.metrics.axisHeight; + + span.style.top = shift + "em"; + span.height -= shift; + span.depth += shift; + } + + return span; +}; + +/** + * Make an inner span with the given offset and in the given font. This is used + * in `makeStackedDelim` to make the stacking pieces for the delimiter. + */ +var makeInner = function(symbol, font, mode) { + var sizeClass; + // Apply the correct CSS class to choose the right font. + if (font === "Size1-Regular") { + sizeClass = "delim-size1"; + } else if (font === "Size4-Regular") { + sizeClass = "delim-size4"; + } + + var inner = makeSpan( + ["delimsizinginner", sizeClass], + [makeSpan([], [buildCommon.makeSymbol(symbol, font, mode)])]); + + // Since this will be passed into `makeVList` in the end, wrap the element + // in the appropriate tag that VList uses. + return {type: "elem", elem: inner}; +}; + +/** + * Make a stacked delimiter out of a given delimiter, with the total height at + * least `heightTotal`. This routine is mentioned on page 442 of the TeXbook. + */ +var makeStackedDelim = function(delim, heightTotal, center, options, mode) { + // There are four parts, the top, an optional middle, a repeated part, and a + // bottom. + var top; + var middle; + var repeat; + var bottom; + top = repeat = bottom = delim; + middle = null; + // Also keep track of what font the delimiters are in + var font = "Size1-Regular"; + + // We set the parts and font based on the symbol. Note that we use + // '\u23d0' instead of '|' and '\u2016' instead of '\\|' for the + // repeats of the arrows + if (delim === "\\uparrow") { + repeat = bottom = "\u23d0"; + } else if (delim === "\\Uparrow") { + repeat = bottom = "\u2016"; + } else if (delim === "\\downarrow") { + top = repeat = "\u23d0"; + } else if (delim === "\\Downarrow") { + top = repeat = "\u2016"; + } else if (delim === "\\updownarrow") { + top = "\\uparrow"; + repeat = "\u23d0"; + bottom = "\\downarrow"; + } else if (delim === "\\Updownarrow") { + top = "\\Uparrow"; + repeat = "\u2016"; + bottom = "\\Downarrow"; + } else if (delim === "[" || delim === "\\lbrack") { + top = "\u23a1"; + repeat = "\u23a2"; + bottom = "\u23a3"; + font = "Size4-Regular"; + } else if (delim === "]" || delim === "\\rbrack") { + top = "\u23a4"; + repeat = "\u23a5"; + bottom = "\u23a6"; + font = "Size4-Regular"; + } else if (delim === "\\lfloor") { + repeat = top = "\u23a2"; + bottom = "\u23a3"; + font = "Size4-Regular"; + } else if (delim === "\\lceil") { + top = "\u23a1"; + repeat = bottom = "\u23a2"; + font = "Size4-Regular"; + } else if (delim === "\\rfloor") { + repeat = top = "\u23a5"; + bottom = "\u23a6"; + font = "Size4-Regular"; + } else if (delim === "\\rceil") { + top = "\u23a4"; + repeat = bottom = "\u23a5"; + font = "Size4-Regular"; + } else if (delim === "(") { + top = "\u239b"; + repeat = "\u239c"; + bottom = "\u239d"; + font = "Size4-Regular"; + } else if (delim === ")") { + top = "\u239e"; + repeat = "\u239f"; + bottom = "\u23a0"; + font = "Size4-Regular"; + } else if (delim === "\\{" || delim === "\\lbrace") { + top = "\u23a7"; + middle = "\u23a8"; + bottom = "\u23a9"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\}" || delim === "\\rbrace") { + top = "\u23ab"; + middle = "\u23ac"; + bottom = "\u23ad"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\lgroup") { + top = "\u23a7"; + bottom = "\u23a9"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\rgroup") { + top = "\u23ab"; + bottom = "\u23ad"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\lmoustache") { + top = "\u23a7"; + bottom = "\u23ad"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\rmoustache") { + top = "\u23ab"; + bottom = "\u23a9"; + repeat = "\u23aa"; + font = "Size4-Regular"; + } else if (delim === "\\surd") { + top = "\ue001"; + bottom = "\u23b7"; + repeat = "\ue000"; + font = "Size4-Regular"; + } + + // Get the metrics of the four sections + var topMetrics = getMetrics(top, font); + var topHeightTotal = topMetrics.height + topMetrics.depth; + var repeatMetrics = getMetrics(repeat, font); + var repeatHeightTotal = repeatMetrics.height + repeatMetrics.depth; + var bottomMetrics = getMetrics(bottom, font); + var bottomHeightTotal = bottomMetrics.height + bottomMetrics.depth; + var middleHeightTotal = 0; + var middleFactor = 1; + if (middle !== null) { + var middleMetrics = getMetrics(middle, font); + middleHeightTotal = middleMetrics.height + middleMetrics.depth; + middleFactor = 2; // repeat symmetrically above and below middle + } + + // Calcuate the minimal height that the delimiter can have. + // It is at least the size of the top, bottom, and optional middle combined. + var minHeight = topHeightTotal + bottomHeightTotal + middleHeightTotal; + + // Compute the number of copies of the repeat symbol we will need + var repeatCount = Math.ceil( + (heightTotal - minHeight) / (middleFactor * repeatHeightTotal)); + + // Compute the total height of the delimiter including all the symbols + var realHeightTotal = + minHeight + repeatCount * middleFactor * repeatHeightTotal; + + // The center of the delimiter is placed at the center of the axis. Note + // that in this context, "center" means that the delimiter should be + // centered around the axis in the current style, while normally it is + // centered around the axis in textstyle. + var axisHeight = fontMetrics.metrics.axisHeight; + if (center) { + axisHeight *= options.style.sizeMultiplier; + } + // Calculate the depth + var depth = realHeightTotal / 2 - axisHeight; + + // Now, we start building the pieces that will go into the vlist + + // Keep a list of the inner pieces + var inners = []; + + // Add the bottom symbol + inners.push(makeInner(bottom, font, mode)); + + var i; + if (middle === null) { + // Add that many symbols + for (i = 0; i < repeatCount; i++) { + inners.push(makeInner(repeat, font, mode)); + } + } else { + // When there is a middle bit, we need the middle part and two repeated + // sections + for (i = 0; i < repeatCount; i++) { + inners.push(makeInner(repeat, font, mode)); + } + inners.push(makeInner(middle, font, mode)); + for (i = 0; i < repeatCount; i++) { + inners.push(makeInner(repeat, font, mode)); + } + } + + // Add the top symbol + inners.push(makeInner(top, font, mode)); + + // Finally, build the vlist + var inner = buildCommon.makeVList(inners, "bottom", depth, options); + + return styleWrap( + makeSpan(["delimsizing", "mult"], [inner], options.getColor()), + Style.TEXT, options); +}; + +// There are three kinds of delimiters, delimiters that stack when they become +// too large +var stackLargeDelimiters = [ + "(", ")", "[", "\\lbrack", "]", "\\rbrack", + "\\{", "\\lbrace", "\\}", "\\rbrace", + "\\lfloor", "\\rfloor", "\\lceil", "\\rceil", + "\\surd", +]; + +// delimiters that always stack +var stackAlwaysDelimiters = [ + "\\uparrow", "\\downarrow", "\\updownarrow", + "\\Uparrow", "\\Downarrow", "\\Updownarrow", + "|", "\\|", "\\vert", "\\Vert", + "\\lvert", "\\rvert", "\\lVert", "\\rVert", + "\\lgroup", "\\rgroup", "\\lmoustache", "\\rmoustache", +]; + +// and delimiters that never stack +var stackNeverDelimiters = [ + "<", ">", "\\langle", "\\rangle", "/", "\\backslash", "\\lt", "\\gt", +]; + +// Metrics of the different sizes. Found by looking at TeX's output of +// $\bigl| // \Bigl| \biggl| \Biggl| \showlists$ +// Used to create stacked delimiters of appropriate sizes in makeSizedDelim. +var sizeToMaxHeight = [0, 1.2, 1.8, 2.4, 3.0]; + +/** + * Used to create a delimiter of a specific size, where `size` is 1, 2, 3, or 4. + */ +var makeSizedDelim = function(delim, size, options, mode) { + // < and > turn into \langle and \rangle in delimiters + if (delim === "<" || delim === "\\lt") { + delim = "\\langle"; + } else if (delim === ">" || delim === "\\gt") { + delim = "\\rangle"; + } + + // Sized delimiters are never centered. + if (utils.contains(stackLargeDelimiters, delim) || + utils.contains(stackNeverDelimiters, delim)) { + return makeLargeDelim(delim, size, false, options, mode); + } else if (utils.contains(stackAlwaysDelimiters, delim)) { + return makeStackedDelim( + delim, sizeToMaxHeight[size], false, options, mode); + } else { + throw new ParseError("Illegal delimiter: '" + delim + "'"); + } +}; + +/** + * There are three different sequences of delimiter sizes that the delimiters + * follow depending on the kind of delimiter. This is used when creating custom + * sized delimiters to decide whether to create a small, large, or stacked + * delimiter. + * + * In real TeX, these sequences aren't explicitly defined, but are instead + * defined inside the font metrics. Since there are only three sequences that + * are possible for the delimiters that TeX defines, it is easier to just encode + * them explicitly here. + */ + +// Delimiters that never stack try small delimiters and large delimiters only +var stackNeverDelimiterSequence = [ + {type: "small", style: Style.SCRIPTSCRIPT}, + {type: "small", style: Style.SCRIPT}, + {type: "small", style: Style.TEXT}, + {type: "large", size: 1}, + {type: "large", size: 2}, + {type: "large", size: 3}, + {type: "large", size: 4}, +]; + +// Delimiters that always stack try the small delimiters first, then stack +var stackAlwaysDelimiterSequence = [ + {type: "small", style: Style.SCRIPTSCRIPT}, + {type: "small", style: Style.SCRIPT}, + {type: "small", style: Style.TEXT}, + {type: "stack"}, +]; + +// Delimiters that stack when large try the small and then large delimiters, and +// stack afterwards +var stackLargeDelimiterSequence = [ + {type: "small", style: Style.SCRIPTSCRIPT}, + {type: "small", style: Style.SCRIPT}, + {type: "small", style: Style.TEXT}, + {type: "large", size: 1}, + {type: "large", size: 2}, + {type: "large", size: 3}, + {type: "large", size: 4}, + {type: "stack"}, +]; + +/** + * Get the font used in a delimiter based on what kind of delimiter it is. + */ +var delimTypeToFont = function(type) { + if (type.type === "small") { + return "Main-Regular"; + } else if (type.type === "large") { + return "Size" + type.size + "-Regular"; + } else if (type.type === "stack") { + return "Size4-Regular"; + } +}; + +/** + * Traverse a sequence of types of delimiters to decide what kind of delimiter + * should be used to create a delimiter of the given height+depth. + */ +var traverseSequence = function(delim, height, sequence, options) { + // Here, we choose the index we should start at in the sequences. In smaller + // sizes (which correspond to larger numbers in style.size) we start earlier + // in the sequence. Thus, scriptscript starts at index 3-3=0, script starts + // at index 3-2=1, text starts at 3-1=2, and display starts at min(2,3-0)=2 + var start = Math.min(2, 3 - options.style.size); + for (var i = start; i < sequence.length; i++) { + if (sequence[i].type === "stack") { + // This is always the last delimiter, so we just break the loop now. + break; + } + + var metrics = getMetrics(delim, delimTypeToFont(sequence[i])); + var heightDepth = metrics.height + metrics.depth; + + // Small delimiters are scaled down versions of the same font, so we + // account for the style change size. + + if (sequence[i].type === "small") { + heightDepth *= sequence[i].style.sizeMultiplier; + } + + // Check if the delimiter at this size works for the given height. + if (heightDepth > height) { + return sequence[i]; + } + } + + // If we reached the end of the sequence, return the last sequence element. + return sequence[sequence.length - 1]; +}; + +/** + * Make a delimiter of a given height+depth, with optional centering. Here, we + * traverse the sequences, and create a delimiter that the sequence tells us to. + */ +var makeCustomSizedDelim = function(delim, height, center, options, mode) { + if (delim === "<" || delim === "\\lt") { + delim = "\\langle"; + } else if (delim === ">" || delim === "\\gt") { + delim = "\\rangle"; + } + + // Decide what sequence to use + var sequence; + if (utils.contains(stackNeverDelimiters, delim)) { + sequence = stackNeverDelimiterSequence; + } else if (utils.contains(stackLargeDelimiters, delim)) { + sequence = stackLargeDelimiterSequence; + } else { + sequence = stackAlwaysDelimiterSequence; + } + + // Look through the sequence + var delimType = traverseSequence(delim, height, sequence, options); + + // Depending on the sequence element we decided on, call the appropriate + // function. + if (delimType.type === "small") { + return makeSmallDelim(delim, delimType.style, center, options, mode); + } else if (delimType.type === "large") { + return makeLargeDelim(delim, delimType.size, center, options, mode); + } else if (delimType.type === "stack") { + return makeStackedDelim(delim, height, center, options, mode); + } +}; + +/** + * Make a delimiter for use with `\left` and `\right`, given a height and depth + * of an expression that the delimiters surround. + */ +var makeLeftRightDelim = function(delim, height, depth, options, mode) { + // We always center \left/\right delimiters, so the axis is always shifted + var axisHeight = + fontMetrics.metrics.axisHeight * options.style.sizeMultiplier; + + // Taken from TeX source, tex.web, function make_left_right + var delimiterFactor = 901; + var delimiterExtend = 5.0 / fontMetrics.metrics.ptPerEm; + + var maxDistFromAxis = Math.max( + height - axisHeight, depth + axisHeight); + + var totalHeight = Math.max( + // In real TeX, calculations are done using integral values which are + // 65536 per pt, or 655360 per em. So, the division here truncates in + // TeX but doesn't here, producing different results. If we wanted to + // exactly match TeX's calculation, we could do + // Math.floor(655360 * maxDistFromAxis / 500) * + // delimiterFactor / 655360 + // (To see the difference, compare + // x^{x^{\left(\rule{0.1em}{0.68em}\right)}} + // in TeX and KaTeX) + maxDistFromAxis / 500 * delimiterFactor, + 2 * maxDistFromAxis - delimiterExtend); + + // Finally, we defer to `makeCustomSizedDelim` with our calculated total + // height + return makeCustomSizedDelim(delim, totalHeight, true, options, mode); +}; + +module.exports = { + sizedDelim: makeSizedDelim, + customSizedDelim: makeCustomSizedDelim, + leftRightDelim: makeLeftRightDelim, +}; + +},{"./ParseError":6,"./Style":9,"./buildCommon":10,"./fontMetrics":17,"./symbols":23,"./utils":25}],15:[function(require,module,exports){ +/** + * These objects store the data about the DOM nodes we create, as well as some + * extra data. They can then be transformed into real DOM nodes with the + * `toNode` function or HTML markup using `toMarkup`. They are useful for both + * storing extra properties on the nodes, as well as providing a way to easily + * work with the DOM. + * + * Similar functions for working with MathML nodes exist in mathMLTree.js. + */ +var unicodeRegexes = require("./unicodeRegexes"); +var utils = require("./utils"); + +/** + * Create an HTML className based on a list of classes. In addition to joining + * with spaces, we also remove null or empty classes. + */ +var createClass = function(classes) { + classes = classes.slice(); + for (var i = classes.length - 1; i >= 0; i--) { + if (!classes[i]) { + classes.splice(i, 1); + } + } + + return classes.join(" "); +}; + +/** + * This node represents a span node, with a className, a list of children, and + * an inline style. It also contains information about its height, depth, and + * maxFontSize. + */ +function span(classes, children, height, depth, maxFontSize, style) { + this.classes = classes || []; + this.children = children || []; + this.height = height || 0; + this.depth = depth || 0; + this.maxFontSize = maxFontSize || 0; + this.style = style || {}; + this.attributes = {}; +} + +/** + * Sets an arbitrary attribute on the span. Warning: use this wisely. Not all + * browsers support attributes the same, and having too many custom attributes + * is probably bad. + */ +span.prototype.setAttribute = function(attribute, value) { + this.attributes[attribute] = value; +}; + +/** + * Convert the span into an HTML node + */ +span.prototype.toNode = function() { + var span = document.createElement("span"); + + // Apply the class + span.className = createClass(this.classes); + + // Apply inline styles + for (var style in this.style) { + if (Object.prototype.hasOwnProperty.call(this.style, style)) { + span.style[style] = this.style[style]; + } + } + + // Apply attributes + for (var attr in this.attributes) { + if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { + span.setAttribute(attr, this.attributes[attr]); + } + } + + // Append the children, also as HTML nodes + for (var i = 0; i < this.children.length; i++) { + span.appendChild(this.children[i].toNode()); + } + + return span; +}; + +/** + * Convert the span into an HTML markup string + */ +span.prototype.toMarkup = function() { + var markup = "<span"; + + // Add the class + if (this.classes.length) { + markup += " class=\""; + markup += utils.escape(createClass(this.classes)); + markup += "\""; + } + + var styles = ""; + + // Add the styles, after hyphenation + for (var style in this.style) { + if (this.style.hasOwnProperty(style)) { + styles += utils.hyphenate(style) + ":" + this.style[style] + ";"; + } + } + + if (styles) { + markup += " style=\"" + utils.escape(styles) + "\""; + } + + // Add the attributes + for (var attr in this.attributes) { + if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { + markup += " " + attr + "=\""; + markup += utils.escape(this.attributes[attr]); + markup += "\""; + } + } + + markup += ">"; + + // Add the markup of the children, also as markup + for (var i = 0; i < this.children.length; i++) { + markup += this.children[i].toMarkup(); + } + + markup += "</span>"; + + return markup; +}; + +/** + * This node represents a document fragment, which contains elements, but when + * placed into the DOM doesn't have any representation itself. Thus, it only + * contains children and doesn't have any HTML properties. It also keeps track + * of a height, depth, and maxFontSize. + */ +function documentFragment(children, height, depth, maxFontSize) { + this.children = children || []; + this.height = height || 0; + this.depth = depth || 0; + this.maxFontSize = maxFontSize || 0; +} + +/** + * Convert the fragment into a node + */ +documentFragment.prototype.toNode = function() { + // Create a fragment + var frag = document.createDocumentFragment(); + + // Append the children + for (var i = 0; i < this.children.length; i++) { + frag.appendChild(this.children[i].toNode()); + } + + return frag; +}; + +/** + * Convert the fragment into HTML markup + */ +documentFragment.prototype.toMarkup = function() { + var markup = ""; + + // Simply concatenate the markup for the children together + for (var i = 0; i < this.children.length; i++) { + markup += this.children[i].toMarkup(); + } + + return markup; +}; + +var iCombinations = { + 'î': '\u0131\u0302', + 'ï': '\u0131\u0308', + 'í': '\u0131\u0301', + // 'ī': '\u0131\u0304', // enable when we add Extended Latin + 'ì': '\u0131\u0300', +}; + +/** + * A symbol node contains information about a single symbol. It either renders + * to a single text node, or a span with a single text node in it, depending on + * whether it has CSS classes, styles, or needs italic correction. + */ +function symbolNode(value, height, depth, italic, skew, classes, style) { + this.value = value || ""; + this.height = height || 0; + this.depth = depth || 0; + this.italic = italic || 0; + this.skew = skew || 0; + this.classes = classes || []; + this.style = style || {}; + this.maxFontSize = 0; + + // Mark CJK characters with specific classes so that we can specify which + // fonts to use. This allows us to render these characters with a serif + // font in situations where the browser would either default to a sans serif + // or render a placeholder character. + if (unicodeRegexes.cjkRegex.test(value)) { + // I couldn't find any fonts that contained Hangul as well as all of + // the other characters we wanted to test there for it gets its own + // CSS class. + if (unicodeRegexes.hangulRegex.test(value)) { + this.classes.push('hangul_fallback'); + } else { + this.classes.push('cjk_fallback'); + } + } + + if (/[îïíì]/.test(this.value)) { // add ī when we add Extended Latin + this.value = iCombinations[this.value]; + } +} + +/** + * Creates a text node or span from a symbol node. Note that a span is only + * created if it is needed. + */ +symbolNode.prototype.toNode = function() { + var node = document.createTextNode(this.value); + var span = null; + + if (this.italic > 0) { + span = document.createElement("span"); + span.style.marginRight = this.italic + "em"; + } + + if (this.classes.length > 0) { + span = span || document.createElement("span"); + span.className = createClass(this.classes); + } + + for (var style in this.style) { + if (this.style.hasOwnProperty(style)) { + span = span || document.createElement("span"); + span.style[style] = this.style[style]; + } + } + + if (span) { + span.appendChild(node); + return span; + } else { + return node; + } +}; + +/** + * Creates markup for a symbol node. + */ +symbolNode.prototype.toMarkup = function() { + // TODO(alpert): More duplication than I'd like from + // span.prototype.toMarkup and symbolNode.prototype.toNode... + var needsSpan = false; + + var markup = "<span"; + + if (this.classes.length) { + needsSpan = true; + markup += " class=\""; + markup += utils.escape(createClass(this.classes)); + markup += "\""; + } + + var styles = ""; + + if (this.italic > 0) { + styles += "margin-right:" + this.italic + "em;"; + } + for (var style in this.style) { + if (this.style.hasOwnProperty(style)) { + styles += utils.hyphenate(style) + ":" + this.style[style] + ";"; + } + } + + if (styles) { + needsSpan = true; + markup += " style=\"" + utils.escape(styles) + "\""; + } + + var escaped = utils.escape(this.value); + if (needsSpan) { + markup += ">"; + markup += escaped; + markup += "</span>"; + return markup; + } else { + return escaped; + } +}; + +module.exports = { + span: span, + documentFragment: documentFragment, + symbolNode: symbolNode, +}; + +},{"./unicodeRegexes":24,"./utils":25}],16:[function(require,module,exports){ +/* eslint no-constant-condition:0 */ +var fontMetrics = require("./fontMetrics"); +var parseData = require("./parseData"); +var ParseError = require("./ParseError"); + +var ParseNode = parseData.ParseNode; + +/** + * Parse the body of the environment, with rows delimited by \\ and + * columns delimited by &, and create a nested list in row-major order + * with one group per cell. + */ +function parseArray(parser, result) { + var row = []; + var body = [row]; + var rowGaps = []; + while (true) { + var cell = parser.parseExpression(false, null); + row.push(new ParseNode("ordgroup", cell, parser.mode)); + var next = parser.nextToken.text; + if (next === "&") { + parser.consume(); + } else if (next === "\\end") { + break; + } else if (next === "\\\\" || next === "\\cr") { + var cr = parser.parseFunction(); + rowGaps.push(cr.value.size); + row = []; + body.push(row); + } else { + throw new ParseError("Expected & or \\\\ or \\end", + parser.nextToken); + } + } + result.body = body; + result.rowGaps = rowGaps; + return new ParseNode(result.type, result, parser.mode); +} + +/* + * An environment definition is very similar to a function definition: + * it is declared with a name or a list of names, a set of properties + * and a handler containing the actual implementation. + * + * The properties include: + * - numArgs: The number of arguments after the \begin{name} function. + * - argTypes: (optional) Just like for a function + * - allowedInText: (optional) Whether or not the environment is allowed inside + * text mode (default false) (not enforced yet) + * - numOptionalArgs: (optional) Just like for a function + * A bare number instead of that object indicates the numArgs value. + * + * The handler function will receive two arguments + * - context: information and references provided by the parser + * - args: an array of arguments passed to \begin{name} + * The context contains the following properties: + * - envName: the name of the environment, one of the listed names. + * - parser: the parser object + * - lexer: the lexer object + * - positions: the positions associated with these arguments from args. + * The handler must return a ParseResult. + */ + +function defineEnvironment(names, props, handler) { + if (typeof names === "string") { + names = [names]; + } + if (typeof props === "number") { + props = { numArgs: props }; + } + // Set default values of environments + var data = { + numArgs: props.numArgs || 0, + argTypes: props.argTypes, + greediness: 1, + allowedInText: !!props.allowedInText, + numOptionalArgs: props.numOptionalArgs || 0, + handler: handler, + }; + for (var i = 0; i < names.length; ++i) { + module.exports[names[i]] = data; + } +} + +// Arrays are part of LaTeX, defined in lttab.dtx so its documentation +// is part of the source2e.pdf file of LaTeX2e source documentation. +defineEnvironment("array", { + numArgs: 1, +}, function(context, args) { + var colalign = args[0]; + colalign = colalign.value.map ? colalign.value : [colalign]; + var cols = colalign.map(function(node) { + var ca = node.value; + if ("lcr".indexOf(ca) !== -1) { + return { + type: "align", + align: ca, + }; + } else if (ca === "|") { + return { + type: "separator", + separator: "|", + }; + } + throw new ParseError( + "Unknown column alignment: " + node.value, + node); + }); + var res = { + type: "array", + cols: cols, + hskipBeforeAndAfter: true, // \@preamble in lttab.dtx + }; + res = parseArray(context.parser, res); + return res; +}); + +// The matrix environments of amsmath builds on the array environment +// of LaTeX, which is discussed above. +defineEnvironment([ + "matrix", + "pmatrix", + "bmatrix", + "Bmatrix", + "vmatrix", + "Vmatrix", +], { +}, function(context) { + var delimiters = { + "matrix": null, + "pmatrix": ["(", ")"], + "bmatrix": ["[", "]"], + "Bmatrix": ["\\{", "\\}"], + "vmatrix": ["|", "|"], + "Vmatrix": ["\\Vert", "\\Vert"], + }[context.envName]; + var res = { + type: "array", + hskipBeforeAndAfter: false, // \hskip -\arraycolsep in amsmath + }; + res = parseArray(context.parser, res); + if (delimiters) { + res = new ParseNode("leftright", { + body: [res], + left: delimiters[0], + right: delimiters[1], + }, context.mode); + } + return res; +}); + +// A cases environment (in amsmath.sty) is almost equivalent to +// \def\arraystretch{1.2}% +// \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right. +defineEnvironment("cases", { +}, function(context) { + var res = { + type: "array", + arraystretch: 1.2, + cols: [{ + type: "align", + align: "l", + pregap: 0, + postgap: fontMetrics.metrics.quad, + }, { + type: "align", + align: "l", + pregap: 0, + postgap: 0, + }], + }; + res = parseArray(context.parser, res); + res = new ParseNode("leftright", { + body: [res], + left: "\\{", + right: ".", + }, context.mode); + return res; +}); + +// An aligned environment is like the align* environment +// except it operates within math mode. +// Note that we assume \nomallineskiplimit to be zero, +// so that \strut@ is the same as \strut. +defineEnvironment("aligned", { +}, function(context) { + var res = { + type: "array", + cols: [], + }; + res = parseArray(context.parser, res); + var emptyGroup = new ParseNode("ordgroup", [], context.mode); + var numCols = 0; + res.value.body.forEach(function(row) { + var i; + for (i = 1; i < row.length; i += 2) { + row[i].value.unshift(emptyGroup); + } + if (numCols < row.length) { + numCols = row.length; + } + }); + for (var i = 0; i < numCols; ++i) { + var align = "r"; + var pregap = 0; + if (i % 2 === 1) { + align = "l"; + } else if (i > 0) { + pregap = 2; // one \qquad between columns + } + res.value.cols[i] = { + type: "align", + align: align, + pregap: pregap, + postgap: 0, + }; + } + return res; +}); + +},{"./ParseError":6,"./fontMetrics":17,"./parseData":21}],17:[function(require,module,exports){ +/* eslint no-unused-vars:0 */ + +var Style = require("./Style"); +var cjkRegex = require("./unicodeRegexes").cjkRegex; + +/** + * This file contains metrics regarding fonts and individual symbols. The sigma + * and xi variables, as well as the metricMap map contain data extracted from + * TeX, TeX font metrics, and the TTF files. These data are then exposed via the + * `metrics` variable and the getCharacterMetrics function. + */ + +// These font metrics are extracted from TeX by using +// \font\a=cmmi10 +// \showthe\fontdimenX\a +// where X is the corresponding variable number. These correspond to the font +// parameters of the symbol fonts. In TeX, there are actually three sets of +// dimensions, one for each of textstyle, scriptstyle, and scriptscriptstyle, +// but we only use the textstyle ones, and scale certain dimensions accordingly. +// See the TeXbook, page 441. +var sigma1 = 0.025; +var sigma2 = 0; +var sigma3 = 0; +var sigma4 = 0; +var sigma5 = 0.431; +var sigma6 = 1; +var sigma7 = 0; +var sigma8 = 0.677; +var sigma9 = 0.394; +var sigma10 = 0.444; +var sigma11 = 0.686; +var sigma12 = 0.345; +var sigma13 = 0.413; +var sigma14 = 0.363; +var sigma15 = 0.289; +var sigma16 = 0.150; +var sigma17 = 0.247; +var sigma18 = 0.386; +var sigma19 = 0.050; +var sigma20 = 2.390; +var sigma21 = 1.01; +var sigma21Script = 0.81; +var sigma21ScriptScript = 0.71; +var sigma22 = 0.250; + +// These font metrics are extracted from TeX by using +// \font\a=cmex10 +// \showthe\fontdimenX\a +// where X is the corresponding variable number. These correspond to the font +// parameters of the extension fonts (family 3). See the TeXbook, page 441. +var xi1 = 0; +var xi2 = 0; +var xi3 = 0; +var xi4 = 0; +var xi5 = 0.431; +var xi6 = 1; +var xi7 = 0; +var xi8 = 0.04; +var xi9 = 0.111; +var xi10 = 0.166; +var xi11 = 0.2; +var xi12 = 0.6; +var xi13 = 0.1; + +// This value determines how large a pt is, for metrics which are defined in +// terms of pts. +// This value is also used in katex.less; if you change it make sure the values +// match. +var ptPerEm = 10.0; + +// The space between adjacent `|` columns in an array definition. From +// `\showthe\doublerulesep` in LaTeX. +var doubleRuleSep = 2.0 / ptPerEm; + +/** + * This is just a mapping from common names to real metrics + */ +var metrics = { + xHeight: sigma5, + quad: sigma6, + num1: sigma8, + num2: sigma9, + num3: sigma10, + denom1: sigma11, + denom2: sigma12, + sup1: sigma13, + sup2: sigma14, + sup3: sigma15, + sub1: sigma16, + sub2: sigma17, + supDrop: sigma18, + subDrop: sigma19, + axisHeight: sigma22, + defaultRuleThickness: xi8, + bigOpSpacing1: xi9, + bigOpSpacing2: xi10, + bigOpSpacing3: xi11, + bigOpSpacing4: xi12, + bigOpSpacing5: xi13, + ptPerEm: ptPerEm, + emPerEx: sigma5 / sigma6, + doubleRuleSep: doubleRuleSep, + + // TODO(alpert): Missing parallel structure here. We should probably add + // style-specific metrics for all of these. + delim1: sigma20, + getDelim2: function(style) { + if (style.size === Style.TEXT.size) { + return sigma21; + } else if (style.size === Style.SCRIPT.size) { + return sigma21Script; + } else if (style.size === Style.SCRIPTSCRIPT.size) { + return sigma21ScriptScript; + } + throw new Error("Unexpected style size: " + style.size); + }, +}; + +// This map contains a mapping from font name and character code to character +// metrics, including height, depth, italic correction, and skew (kern from the +// character to the corresponding \skewchar) +// This map is generated via `make metrics`. It should not be changed manually. +var metricMap = require("./fontMetricsData"); + +// These are very rough approximations. We default to Times New Roman which +// should have Latin-1 and Cyrillic characters, but may not depending on the +// operating system. The metrics do not account for extra height from the +// accents. In the case of Cyrillic characters which have both ascenders and +// descenders we prefer approximations with ascenders, primarily to prevent +// the fraction bar or root line from intersecting the glyph. +// TODO(kevinb) allow union of multiple glyph metrics for better accuracy. +var extraCharacterMap = { + // Latin-1 + 'À': 'A', + 'Á': 'A', + 'Â': 'A', + 'Ã': 'A', + 'Ä': 'A', + 'Å': 'A', + 'Æ': 'A', + 'Ç': 'C', + 'È': 'E', + 'É': 'E', + 'Ê': 'E', + 'Ë': 'E', + 'Ì': 'I', + 'Í': 'I', + 'Î': 'I', + 'Ï': 'I', + 'Ð': 'D', + 'Ñ': 'N', + 'Ò': 'O', + 'Ó': 'O', + 'Ô': 'O', + 'Õ': 'O', + 'Ö': 'O', + 'Ø': 'O', + 'Ù': 'U', + 'Ú': 'U', + 'Û': 'U', + 'Ü': 'U', + 'Ý': 'Y', + 'Þ': 'o', + 'ß': 'B', + 'à': 'a', + 'á': 'a', + 'â': 'a', + 'ã': 'a', + 'ä': 'a', + 'å': 'a', + 'æ': 'a', + 'ç': 'c', + 'è': 'e', + 'é': 'e', + 'ê': 'e', + 'ë': 'e', + 'ì': 'i', + 'í': 'i', + 'î': 'i', + 'ï': 'i', + 'ð': 'd', + 'ñ': 'n', + 'ò': 'o', + 'ó': 'o', + 'ô': 'o', + 'õ': 'o', + 'ö': 'o', + 'ø': 'o', + 'ù': 'u', + 'ú': 'u', + 'û': 'u', + 'ü': 'u', + 'ý': 'y', + 'þ': 'o', + 'ÿ': 'y', + + // Cyrillic + 'А': 'A', + 'Б': 'B', + 'В': 'B', + 'Г': 'F', + 'Д': 'A', + 'Е': 'E', + 'Ж': 'K', + 'З': '3', + 'И': 'N', + 'Й': 'N', + 'К': 'K', + 'Л': 'N', + 'М': 'M', + 'Н': 'H', + 'О': 'O', + 'П': 'N', + 'Р': 'P', + 'С': 'C', + 'Т': 'T', + 'У': 'y', + 'Ф': 'O', + 'Х': 'X', + 'Ц': 'U', + 'Ч': 'h', + 'Ш': 'W', + 'Щ': 'W', + 'Ъ': 'B', + 'Ы': 'X', + 'Ь': 'B', + 'Э': '3', + 'Ю': 'X', + 'Я': 'R', + 'а': 'a', + 'б': 'b', + 'в': 'a', + 'г': 'r', + 'д': 'y', + 'е': 'e', + 'ж': 'm', + 'з': 'e', + 'и': 'n', + 'й': 'n', + 'к': 'n', + 'л': 'n', + 'м': 'm', + 'н': 'n', + 'о': 'o', + 'п': 'n', + 'р': 'p', + 'с': 'c', + 'т': 'o', + 'у': 'y', + 'ф': 'b', + 'х': 'x', + 'ц': 'n', + 'ч': 'n', + 'ш': 'w', + 'щ': 'w', + 'ъ': 'a', + 'ы': 'm', + 'ь': 'a', + 'э': 'e', + 'ю': 'm', + 'я': 'r', +}; + +/** + * This function is a convenience function for looking up information in the + * metricMap table. It takes a character as a string, and a style. + * + * Note: the `width` property may be undefined if fontMetricsData.js wasn't + * built using `Make extended_metrics`. + */ +var getCharacterMetrics = function(character, style) { + var ch = character.charCodeAt(0); + if (character[0] in extraCharacterMap) { + ch = extraCharacterMap[character[0]].charCodeAt(0); + } else if (cjkRegex.test(character[0])) { + ch = 'M'.charCodeAt(0); + } + var metrics = metricMap[style][ch]; + if (metrics) { + return { + depth: metrics[0], + height: metrics[1], + italic: metrics[2], + skew: metrics[3], + width: metrics[4], + }; + } +}; + +module.exports = { + metrics: metrics, + getCharacterMetrics: getCharacterMetrics, +}; + +},{"./Style":9,"./fontMetricsData":18,"./unicodeRegexes":24}],18:[function(require,module,exports){ +module.exports = { + "AMS-Regular": { + "65": [0, 0.68889, 0, 0], + "66": [0, 0.68889, 0, 0], + "67": [0, 0.68889, 0, 0], + "68": [0, 0.68889, 0, 0], + "69": [0, 0.68889, 0, 0], + "70": [0, 0.68889, 0, 0], + "71": [0, 0.68889, 0, 0], + "72": [0, 0.68889, 0, 0], + "73": [0, 0.68889, 0, 0], + "74": [0.16667, 0.68889, 0, 0], + "75": [0, 0.68889, 0, 0], + "76": [0, 0.68889, 0, 0], + "77": [0, 0.68889, 0, 0], + "78": [0, 0.68889, 0, 0], + "79": [0.16667, 0.68889, 0, 0], + "80": [0, 0.68889, 0, 0], + "81": [0.16667, 0.68889, 0, 0], + "82": [0, 0.68889, 0, 0], + "83": [0, 0.68889, 0, 0], + "84": [0, 0.68889, 0, 0], + "85": [0, 0.68889, 0, 0], + "86": [0, 0.68889, 0, 0], + "87": [0, 0.68889, 0, 0], + "88": [0, 0.68889, 0, 0], + "89": [0, 0.68889, 0, 0], + "90": [0, 0.68889, 0, 0], + "107": [0, 0.68889, 0, 0], + "165": [0, 0.675, 0.025, 0], + "174": [0.15559, 0.69224, 0, 0], + "240": [0, 0.68889, 0, 0], + "295": [0, 0.68889, 0, 0], + "710": [0, 0.825, 0, 0], + "732": [0, 0.9, 0, 0], + "770": [0, 0.825, 0, 0], + "771": [0, 0.9, 0, 0], + "989": [0.08167, 0.58167, 0, 0], + "1008": [0, 0.43056, 0.04028, 0], + "8245": [0, 0.54986, 0, 0], + "8463": [0, 0.68889, 0, 0], + "8487": [0, 0.68889, 0, 0], + "8498": [0, 0.68889, 0, 0], + "8502": [0, 0.68889, 0, 0], + "8503": [0, 0.68889, 0, 0], + "8504": [0, 0.68889, 0, 0], + "8513": [0, 0.68889, 0, 0], + "8592": [-0.03598, 0.46402, 0, 0], + "8594": [-0.03598, 0.46402, 0, 0], + "8602": [-0.13313, 0.36687, 0, 0], + "8603": [-0.13313, 0.36687, 0, 0], + "8606": [0.01354, 0.52239, 0, 0], + "8608": [0.01354, 0.52239, 0, 0], + "8610": [0.01354, 0.52239, 0, 0], + "8611": [0.01354, 0.52239, 0, 0], + "8619": [0, 0.54986, 0, 0], + "8620": [0, 0.54986, 0, 0], + "8621": [-0.13313, 0.37788, 0, 0], + "8622": [-0.13313, 0.36687, 0, 0], + "8624": [0, 0.69224, 0, 0], + "8625": [0, 0.69224, 0, 0], + "8630": [0, 0.43056, 0, 0], + "8631": [0, 0.43056, 0, 0], + "8634": [0.08198, 0.58198, 0, 0], + "8635": [0.08198, 0.58198, 0, 0], + "8638": [0.19444, 0.69224, 0, 0], + "8639": [0.19444, 0.69224, 0, 0], + "8642": [0.19444, 0.69224, 0, 0], + "8643": [0.19444, 0.69224, 0, 0], + "8644": [0.1808, 0.675, 0, 0], + "8646": [0.1808, 0.675, 0, 0], + "8647": [0.1808, 0.675, 0, 0], + "8648": [0.19444, 0.69224, 0, 0], + "8649": [0.1808, 0.675, 0, 0], + "8650": [0.19444, 0.69224, 0, 0], + "8651": [0.01354, 0.52239, 0, 0], + "8652": [0.01354, 0.52239, 0, 0], + "8653": [-0.13313, 0.36687, 0, 0], + "8654": [-0.13313, 0.36687, 0, 0], + "8655": [-0.13313, 0.36687, 0, 0], + "8666": [0.13667, 0.63667, 0, 0], + "8667": [0.13667, 0.63667, 0, 0], + "8669": [-0.13313, 0.37788, 0, 0], + "8672": [-0.064, 0.437, 0, 0], + "8674": [-0.064, 0.437, 0, 0], + "8705": [0, 0.825, 0, 0], + "8708": [0, 0.68889, 0, 0], + "8709": [0.08167, 0.58167, 0, 0], + "8717": [0, 0.43056, 0, 0], + "8722": [-0.03598, 0.46402, 0, 0], + "8724": [0.08198, 0.69224, 0, 0], + "8726": [0.08167, 0.58167, 0, 0], + "8733": [0, 0.69224, 0, 0], + "8736": [0, 0.69224, 0, 0], + "8737": [0, 0.69224, 0, 0], + "8738": [0.03517, 0.52239, 0, 0], + "8739": [0.08167, 0.58167, 0, 0], + "8740": [0.25142, 0.74111, 0, 0], + "8741": [0.08167, 0.58167, 0, 0], + "8742": [0.25142, 0.74111, 0, 0], + "8756": [0, 0.69224, 0, 0], + "8757": [0, 0.69224, 0, 0], + "8764": [-0.13313, 0.36687, 0, 0], + "8765": [-0.13313, 0.37788, 0, 0], + "8769": [-0.13313, 0.36687, 0, 0], + "8770": [-0.03625, 0.46375, 0, 0], + "8774": [0.30274, 0.79383, 0, 0], + "8776": [-0.01688, 0.48312, 0, 0], + "8778": [0.08167, 0.58167, 0, 0], + "8782": [0.06062, 0.54986, 0, 0], + "8783": [0.06062, 0.54986, 0, 0], + "8785": [0.08198, 0.58198, 0, 0], + "8786": [0.08198, 0.58198, 0, 0], + "8787": [0.08198, 0.58198, 0, 0], + "8790": [0, 0.69224, 0, 0], + "8791": [0.22958, 0.72958, 0, 0], + "8796": [0.08198, 0.91667, 0, 0], + "8806": [0.25583, 0.75583, 0, 0], + "8807": [0.25583, 0.75583, 0, 0], + "8808": [0.25142, 0.75726, 0, 0], + "8809": [0.25142, 0.75726, 0, 0], + "8812": [0.25583, 0.75583, 0, 0], + "8814": [0.20576, 0.70576, 0, 0], + "8815": [0.20576, 0.70576, 0, 0], + "8816": [0.30274, 0.79383, 0, 0], + "8817": [0.30274, 0.79383, 0, 0], + "8818": [0.22958, 0.72958, 0, 0], + "8819": [0.22958, 0.72958, 0, 0], + "8822": [0.1808, 0.675, 0, 0], + "8823": [0.1808, 0.675, 0, 0], + "8828": [0.13667, 0.63667, 0, 0], + "8829": [0.13667, 0.63667, 0, 0], + "8830": [0.22958, 0.72958, 0, 0], + "8831": [0.22958, 0.72958, 0, 0], + "8832": [0.20576, 0.70576, 0, 0], + "8833": [0.20576, 0.70576, 0, 0], + "8840": [0.30274, 0.79383, 0, 0], + "8841": [0.30274, 0.79383, 0, 0], + "8842": [0.13597, 0.63597, 0, 0], + "8843": [0.13597, 0.63597, 0, 0], + "8847": [0.03517, 0.54986, 0, 0], + "8848": [0.03517, 0.54986, 0, 0], + "8858": [0.08198, 0.58198, 0, 0], + "8859": [0.08198, 0.58198, 0, 0], + "8861": [0.08198, 0.58198, 0, 0], + "8862": [0, 0.675, 0, 0], + "8863": [0, 0.675, 0, 0], + "8864": [0, 0.675, 0, 0], + "8865": [0, 0.675, 0, 0], + "8872": [0, 0.69224, 0, 0], + "8873": [0, 0.69224, 0, 0], + "8874": [0, 0.69224, 0, 0], + "8876": [0, 0.68889, 0, 0], + "8877": [0, 0.68889, 0, 0], + "8878": [0, 0.68889, 0, 0], + "8879": [0, 0.68889, 0, 0], + "8882": [0.03517, 0.54986, 0, 0], + "8883": [0.03517, 0.54986, 0, 0], + "8884": [0.13667, 0.63667, 0, 0], + "8885": [0.13667, 0.63667, 0, 0], + "8888": [0, 0.54986, 0, 0], + "8890": [0.19444, 0.43056, 0, 0], + "8891": [0.19444, 0.69224, 0, 0], + "8892": [0.19444, 0.69224, 0, 0], + "8901": [0, 0.54986, 0, 0], + "8903": [0.08167, 0.58167, 0, 0], + "8905": [0.08167, 0.58167, 0, 0], + "8906": [0.08167, 0.58167, 0, 0], + "8907": [0, 0.69224, 0, 0], + "8908": [0, 0.69224, 0, 0], + "8909": [-0.03598, 0.46402, 0, 0], + "8910": [0, 0.54986, 0, 0], + "8911": [0, 0.54986, 0, 0], + "8912": [0.03517, 0.54986, 0, 0], + "8913": [0.03517, 0.54986, 0, 0], + "8914": [0, 0.54986, 0, 0], + "8915": [0, 0.54986, 0, 0], + "8916": [0, 0.69224, 0, 0], + "8918": [0.0391, 0.5391, 0, 0], + "8919": [0.0391, 0.5391, 0, 0], + "8920": [0.03517, 0.54986, 0, 0], + "8921": [0.03517, 0.54986, 0, 0], + "8922": [0.38569, 0.88569, 0, 0], + "8923": [0.38569, 0.88569, 0, 0], + "8926": [0.13667, 0.63667, 0, 0], + "8927": [0.13667, 0.63667, 0, 0], + "8928": [0.30274, 0.79383, 0, 0], + "8929": 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contains a list of functions that we parse, identified by + * the calls to defineFunction. + * + * The first argument to defineFunction is a single name or a list of names. + * All functions named in such a list will share a single implementation. + * + * Each declared function can have associated properties, which + * include the following: + * + * - numArgs: The number of arguments the function takes. + * If this is the only property, it can be passed as a number + * instead of an element of a properties object. + * - argTypes: (optional) An array corresponding to each argument of the + * function, giving the type of argument that should be parsed. Its + * length should be equal to `numArgs + numOptionalArgs`. Valid + * types: + * - "size": A size-like thing, such as "1em" or "5ex" + * - "color": An html color, like "#abc" or "blue" + * - "original": The same type as the environment that the + * function being parsed is in (e.g. used for the + * bodies of functions like \color where the first + * argument is special and the second argument is + * parsed normally) + * Other possible types (probably shouldn't be used) + * - "text": Text-like (e.g. \text) + * - "math": Normal math + * If undefined, this will be treated as an appropriate length + * array of "original" strings + * - greediness: (optional) The greediness of the function to use ungrouped + * arguments. + * + * E.g. if you have an expression + * \sqrt \frac 1 2 + * since \frac has greediness=2 vs \sqrt's greediness=1, \frac + * will use the two arguments '1' and '2' as its two arguments, + * then that whole function will be used as the argument to + * \sqrt. On the other hand, the expressions + * \frac \frac 1 2 3 + * and + * \frac \sqrt 1 2 + * will fail because \frac and \frac have equal greediness + * and \sqrt has a lower greediness than \frac respectively. To + * make these parse, we would have to change them to: + * \frac {\frac 1 2} 3 + * and + * \frac {\sqrt 1} 2 + * + * The default value is `1` + * - allowedInText: (optional) Whether or not the function is allowed inside + * text mode (default false) + * - numOptionalArgs: (optional) The number of optional arguments the function + * should parse. If the optional arguments aren't found, + * `null` will be passed to the handler in their place. + * (default 0) + * - infix: (optional) Must be true if the function is an infix operator. + * + * The last argument is that implementation, the handler for the function(s). + * It is called to handle these functions and their arguments. + * It receives two arguments: + * - context contains information and references provided by the parser + * - args is an array of arguments obtained from TeX input + * The context contains the following properties: + * - funcName: the text (i.e. name) of the function, including \ + * - parser: the parser object + * - lexer: the lexer object + * - positions: the positions in the overall string of the function + * and the arguments. + * The latter three should only be used to produce error messages. + * + * The function should return an object with the following keys: + * - type: The type of element that this is. This is then used in + * buildHTML/buildMathML to determine which function + * should be called to build this node into a DOM node + * Any other data can be added to the object, which will be passed + * in to the function in buildHTML/buildMathML as `group.value`. + */ + +function defineFunction(names, props, handler) { + if (typeof names === "string") { + names = [names]; + } + if (typeof props === "number") { + props = { numArgs: props }; + } + // Set default values of functions + var data = { + numArgs: props.numArgs, + argTypes: props.argTypes, + greediness: (props.greediness === undefined) ? 1 : props.greediness, + allowedInText: !!props.allowedInText, + numOptionalArgs: props.numOptionalArgs || 0, + infix: !!props.infix, + handler: handler, + }; + for (var i = 0; i < names.length; ++i) { + module.exports[names[i]] = data; + } +} + +// A normal square root +defineFunction("\\sqrt", { + numArgs: 1, + numOptionalArgs: 1, +}, function(context, args) { + var index = args[0]; + var body = args[1]; + return { + type: "sqrt", + body: body, + index: index, + }; +}); + +// Some non-mathy text +defineFunction("\\text", { + numArgs: 1, + argTypes: ["text"], + greediness: 2, +}, function(context, args) { + var body = args[0]; + // Since the corresponding buildHTML/buildMathML function expects a + // list of elements, we normalize for different kinds of arguments + // TODO(emily): maybe this should be done somewhere else + var inner; + if (body.type === "ordgroup") { + inner = body.value; + } else { + inner = [body]; + } + + return { + type: "text", + body: inner, + }; +}); + +// A two-argument custom color +defineFunction("\\color", { + numArgs: 2, + allowedInText: true, + greediness: 3, + argTypes: ["color", "original"], +}, function(context, args) { + var color = args[0]; + var body = args[1]; + // Normalize the different kinds of bodies (see \text above) + var inner; + if (body.type === "ordgroup") { + inner = body.value; + } else { + inner = [body]; + } + + return { + type: "color", + color: color.value, + value: inner, + }; +}); + +// An overline +defineFunction("\\overline", { + numArgs: 1, +}, function(context, args) { + var body = args[0]; + return { + type: "overline", + body: body, + }; +}); + +// An underline +defineFunction("\\underline", { + numArgs: 1, +}, function(context, args) { + var body = args[0]; + return { + type: "underline", + body: body, + }; +}); + +// A box of the width and height +defineFunction("\\rule", { + numArgs: 2, + numOptionalArgs: 1, + argTypes: ["size", "size", "size"], +}, function(context, args) { + var shift = args[0]; + var width = args[1]; + var height = args[2]; + return { + type: "rule", + shift: shift && shift.value, + width: width.value, + height: height.value, + }; +}); + +defineFunction("\\kern", { + numArgs: 1, + argTypes: ["size"], +}, function(context, args) { + return { + type: "kern", + dimension: args[0].value, + }; +}); + +// A KaTeX logo +defineFunction("\\KaTeX", { + numArgs: 0, +}, function(context) { + return { + type: "katex", + }; +}); + +defineFunction("\\phantom", { + numArgs: 1, +}, function(context, args) { + var body = args[0]; + var inner; + if (body.type === "ordgroup") { + inner = body.value; + } else { + inner = [body]; + } + + return { + type: "phantom", + value: inner, + }; +}); + +// Extra data needed for the delimiter handler down below +var delimiterSizes = { + "\\bigl" : {type: "open", size: 1}, + "\\Bigl" : {type: "open", size: 2}, + "\\biggl": {type: "open", size: 3}, + "\\Biggl": {type: "open", size: 4}, + "\\bigr" : {type: "close", size: 1}, + "\\Bigr" : {type: "close", size: 2}, + "\\biggr": {type: "close", size: 3}, + "\\Biggr": {type: "close", size: 4}, + "\\bigm" : {type: "rel", size: 1}, + "\\Bigm" : {type: "rel", size: 2}, + "\\biggm": {type: "rel", size: 3}, + "\\Biggm": {type: "rel", size: 4}, + "\\big" : {type: "textord", size: 1}, + "\\Big" : {type: "textord", size: 2}, + "\\bigg" : {type: "textord", size: 3}, + "\\Bigg" : {type: "textord", size: 4}, +}; + +var delimiters = [ + "(", ")", "[", "\\lbrack", "]", "\\rbrack", + "\\{", "\\lbrace", "\\}", "\\rbrace", + "\\lfloor", "\\rfloor", "\\lceil", "\\rceil", + "<", ">", "\\langle", "\\rangle", "\\lt", "\\gt", + "\\lvert", "\\rvert", "\\lVert", "\\rVert", + "\\lgroup", "\\rgroup", "\\lmoustache", "\\rmoustache", + "/", "\\backslash", + "|", "\\vert", "\\|", "\\Vert", + "\\uparrow", "\\Uparrow", + "\\downarrow", "\\Downarrow", + "\\updownarrow", "\\Updownarrow", + ".", +]; + +var fontAliases = { + "\\Bbb": "\\mathbb", + "\\bold": "\\mathbf", + "\\frak": "\\mathfrak", +}; + +// Single-argument color functions +defineFunction([ + "\\blue", "\\orange", "\\pink", "\\red", + "\\green", "\\gray", "\\purple", + "\\blueA", "\\blueB", "\\blueC", "\\blueD", "\\blueE", + "\\tealA", "\\tealB", "\\tealC", "\\tealD", "\\tealE", + "\\greenA", "\\greenB", "\\greenC", "\\greenD", "\\greenE", + "\\goldA", "\\goldB", "\\goldC", "\\goldD", "\\goldE", + "\\redA", "\\redB", "\\redC", "\\redD", "\\redE", + "\\maroonA", "\\maroonB", "\\maroonC", "\\maroonD", "\\maroonE", + "\\purpleA", "\\purpleB", "\\purpleC", "\\purpleD", "\\purpleE", + "\\mintA", "\\mintB", "\\mintC", + "\\grayA", "\\grayB", "\\grayC", "\\grayD", "\\grayE", + "\\grayF", "\\grayG", "\\grayH", "\\grayI", + "\\kaBlue", "\\kaGreen", +], { + numArgs: 1, + allowedInText: true, + greediness: 3, +}, function(context, args) { + var body = args[0]; + var atoms; + if (body.type === "ordgroup") { + atoms = body.value; + } else { + atoms = [body]; + } + + return { + type: "color", + color: "katex-" + context.funcName.slice(1), + value: atoms, + }; +}); + +// There are 2 flags for operators; whether they produce limits in +// displaystyle, and whether they are symbols and should grow in +// displaystyle. These four groups cover the four possible choices. + +// No limits, not symbols +defineFunction([ + "\\arcsin", "\\arccos", "\\arctan", "\\arg", "\\cos", "\\cosh", + "\\cot", "\\coth", "\\csc", "\\deg", "\\dim", "\\exp", "\\hom", + "\\ker", "\\lg", "\\ln", "\\log", "\\sec", "\\sin", "\\sinh", + "\\tan", "\\tanh", +], { + numArgs: 0, +}, function(context) { + return { + type: "op", + limits: false, + symbol: false, + body: context.funcName, + }; +}); + +// Limits, not symbols +defineFunction([ + "\\det", "\\gcd", "\\inf", "\\lim", "\\liminf", "\\limsup", "\\max", + "\\min", "\\Pr", "\\sup", +], { + numArgs: 0, +}, function(context) { + return { + type: "op", + limits: true, + symbol: false, + body: context.funcName, + }; +}); + +// No limits, symbols +defineFunction([ + "\\int", "\\iint", "\\iiint", "\\oint", +], { + numArgs: 0, +}, function(context) { + return { + type: "op", + limits: false, + symbol: true, + body: context.funcName, + }; +}); + +// Limits, symbols +defineFunction([ + "\\coprod", "\\bigvee", "\\bigwedge", "\\biguplus", "\\bigcap", + "\\bigcup", "\\intop", "\\prod", "\\sum", "\\bigotimes", + "\\bigoplus", "\\bigodot", "\\bigsqcup", "\\smallint", +], { + numArgs: 0, +}, function(context) { + return { + type: "op", + limits: true, + symbol: true, + body: context.funcName, + }; +}); + +// Fractions +defineFunction([ + "\\dfrac", "\\frac", "\\tfrac", + "\\dbinom", "\\binom", "\\tbinom", +], { + numArgs: 2, + greediness: 2, +}, function(context, args) { + var numer = args[0]; + var denom = args[1]; + var hasBarLine; + var leftDelim = null; + var rightDelim = null; + var size = "auto"; + + switch (context.funcName) { + case "\\dfrac": + case "\\frac": + case "\\tfrac": + hasBarLine = true; + break; + case "\\dbinom": + case "\\binom": + case "\\tbinom": + hasBarLine = false; + leftDelim = "("; + rightDelim = ")"; + break; + default: + throw new Error("Unrecognized genfrac command"); + } + + switch (context.funcName) { + case "\\dfrac": + case "\\dbinom": + size = "display"; + break; + case "\\tfrac": + case "\\tbinom": + size = "text"; + break; + } + + return { + type: "genfrac", + numer: numer, + denom: denom, + hasBarLine: hasBarLine, + leftDelim: leftDelim, + rightDelim: rightDelim, + size: size, + }; +}); + +// Left and right overlap functions +defineFunction(["\\llap", "\\rlap"], { + numArgs: 1, + allowedInText: true, +}, function(context, args) { + var body = args[0]; + return { + type: context.funcName.slice(1), + body: body, + }; +}); + +// Delimiter functions +defineFunction([ + "\\bigl", "\\Bigl", "\\biggl", "\\Biggl", + "\\bigr", "\\Bigr", "\\biggr", "\\Biggr", + "\\bigm", "\\Bigm", "\\biggm", "\\Biggm", + "\\big", "\\Big", "\\bigg", "\\Bigg", + "\\left", "\\right", +], { + numArgs: 1, +}, function(context, args) { + var delim = args[0]; + if (!utils.contains(delimiters, delim.value)) { + throw new ParseError( + "Invalid delimiter: '" + delim.value + "' after '" + + context.funcName + "'", delim); + } + + // \left and \right are caught somewhere in Parser.js, which is + // why this data doesn't match what is in buildHTML. + if (context.funcName === "\\left" || context.funcName === "\\right") { + return { + type: "leftright", + value: delim.value, + }; + } else { + return { + type: "delimsizing", + size: delimiterSizes[context.funcName].size, + delimType: delimiterSizes[context.funcName].type, + value: delim.value, + }; + } +}); + +// Sizing functions (handled in Parser.js explicitly, hence no handler) +defineFunction([ + "\\tiny", "\\scriptsize", "\\footnotesize", "\\small", + "\\normalsize", "\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge", +], 0, null); + +// Style changing functions (handled in Parser.js explicitly, hence no +// handler) +defineFunction([ + "\\displaystyle", "\\textstyle", "\\scriptstyle", + "\\scriptscriptstyle", +], 0, null); + +defineFunction([ + // styles + "\\mathrm", "\\mathit", "\\mathbf", + + // families + "\\mathbb", "\\mathcal", "\\mathfrak", "\\mathscr", "\\mathsf", + "\\mathtt", + + // aliases + "\\Bbb", "\\bold", "\\frak", +], { + numArgs: 1, + greediness: 2, +}, function(context, args) { + var body = args[0]; + var func = context.funcName; + if (func in fontAliases) { + func = fontAliases[func]; + } + return { + type: "font", + font: func.slice(1), + body: body, + }; +}); + +// Accents +defineFunction([ + "\\acute", "\\grave", "\\ddot", "\\tilde", "\\bar", "\\breve", + "\\check", "\\hat", "\\vec", "\\dot", + // We don't support expanding accents yet + // "\\widetilde", "\\widehat" +], { + numArgs: 1, +}, function(context, args) { + var base = args[0]; + return { + type: "accent", + accent: context.funcName, + base: base, + }; +}); + +// Infix generalized fractions +defineFunction(["\\over", "\\choose"], { + numArgs: 0, + infix: true, +}, function(context) { + var replaceWith; + switch (context.funcName) { + case "\\over": + replaceWith = "\\frac"; + break; + case "\\choose": + replaceWith = "\\binom"; + break; + default: + throw new Error("Unrecognized infix genfrac command"); + } + return { + type: "infix", + replaceWith: replaceWith, + token: context.token, + }; +}); + +// Row breaks for aligned data +defineFunction(["\\\\", "\\cr"], { + numArgs: 0, + numOptionalArgs: 1, + argTypes: ["size"], +}, function(context, args) { + var size = args[0]; + return { + type: "cr", + size: size, + }; +}); + +// Environment delimiters +defineFunction(["\\begin", "\\end"], { + numArgs: 1, + argTypes: ["text"], +}, function(context, args) { + var nameGroup = args[0]; + if (nameGroup.type !== "ordgroup") { + throw new ParseError("Invalid environment name", nameGroup); + } + var name = ""; + for (var i = 0; i < nameGroup.value.length; ++i) { + name += nameGroup.value[i].value; + } + return { + type: "environment", + name: name, + nameGroup: nameGroup, + }; +}); + +},{"./ParseError":6,"./utils":25}],20:[function(require,module,exports){ +/** + * These objects store data about MathML nodes. This is the MathML equivalent + * of the types in domTree.js. Since MathML handles its own rendering, and + * since we're mainly using MathML to improve accessibility, we don't manage + * any of the styling state that the plain DOM nodes do. + * + * The `toNode` and `toMarkup` functions work simlarly to how they do in + * domTree.js, creating namespaced DOM nodes and HTML text markup respectively. + */ + +var utils = require("./utils"); + +/** + * This node represents a general purpose MathML node of any type. The + * constructor requires the type of node to create (for example, `"mo"` or + * `"mspace"`, corresponding to `<mo>` and `<mspace>` tags). + */ +function MathNode(type, children) { + this.type = type; + this.attributes = {}; + this.children = children || []; +} + +/** + * Sets an attribute on a MathML node. MathML depends on attributes to convey a + * semantic content, so this is used heavily. + */ +MathNode.prototype.setAttribute = function(name, value) { + this.attributes[name] = value; +}; + +/** + * Converts the math node into a MathML-namespaced DOM element. + */ +MathNode.prototype.toNode = function() { + var node = document.createElementNS( + "http://www.w3.org/1998/Math/MathML", this.type); + + for (var attr in this.attributes) { + if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { + node.setAttribute(attr, this.attributes[attr]); + } + } + + for (var i = 0; i < this.children.length; i++) { + node.appendChild(this.children[i].toNode()); + } + + return node; +}; + +/** + * Converts the math node into an HTML markup string. + */ +MathNode.prototype.toMarkup = function() { + var markup = "<" + this.type; + + // Add the attributes + for (var attr in this.attributes) { + if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) { + markup += " " + attr + "=\""; + markup += utils.escape(this.attributes[attr]); + markup += "\""; + } + } + + markup += ">"; + + for (var i = 0; i < this.children.length; i++) { + markup += this.children[i].toMarkup(); + } + + markup += "</" + this.type + ">"; + + return markup; +}; + +/** + * This node represents a piece of text. + */ +function TextNode(text) { + this.text = text; +} + +/** + * Converts the text node into a DOM text node. + */ +TextNode.prototype.toNode = function() { + return document.createTextNode(this.text); +}; + +/** + * Converts the text node into HTML markup (which is just the text itself). + */ +TextNode.prototype.toMarkup = function() { + return utils.escape(this.text); +}; + +module.exports = { + MathNode: MathNode, + TextNode: TextNode, +}; + +},{"./utils":25}],21:[function(require,module,exports){ +/** + * The resulting parse tree nodes of the parse tree. + * + * It is possible to provide position information, so that a ParseNode can + * fulfil a role similar to a Token in error reporting. + * For details on the corresponding properties see Token constructor. + * Providing such information can lead to better error reporting. + * + * @param {string} type type of node, like e.g. "ordgroup" + * @param {?object} value type-specific representation of the node + * @param {string} mode parse mode in action for this node, + * "math" or "text" + * @param {Token=} firstToken first token of the input for this node, + * will omit position information if unset + * @param {Token=} lastToken last token of the input for this node, + * will default to firstToken if unset + */ +function ParseNode(type, value, mode, firstToken, lastToken) { + this.type = type; + this.value = value; + this.mode = mode; + if (firstToken && (!lastToken || lastToken.lexer === firstToken.lexer)) { + this.lexer = firstToken.lexer; + this.start = firstToken.start; + this.end = (lastToken || firstToken).end; + } +} + +module.exports = { + ParseNode: ParseNode, +}; + + +},{}],22:[function(require,module,exports){ +/** + * Provides a single function for parsing an expression using a Parser + * TODO(emily): Remove this + */ + +var Parser = require("./Parser"); + +/** + * Parses an expression using a Parser, then returns the parsed result. + */ +var parseTree = function(toParse, settings) { + if (!(typeof toParse === 'string' || toParse instanceof String)) { + throw new TypeError('KaTeX can only parse string typed expression'); + } + var parser = new Parser(toParse, settings); + + return parser.parse(); +}; + +module.exports = parseTree; + +},{"./Parser":7}],23:[function(require,module,exports){ +/** + * This file holds a list of all no-argument functions and single-character + * symbols (like 'a' or ';'). + * + * For each of the symbols, there are three properties they can have: + * - font (required): the font to be used for this symbol. Either "main" (the + normal font), or "ams" (the ams fonts). + * - group (required): the ParseNode group type the symbol should have (i.e. + "textord", "mathord", etc). + See https://github.com/Khan/KaTeX/wiki/Examining-TeX#group-types + * - replace: the character that this symbol or function should be + * replaced with (i.e. "\phi" has a replace value of "\u03d5", the phi + * character in the main font). + * + * The outermost map in the table indicates what mode the symbols should be + * accepted in (e.g. "math" or "text"). + */ + +module.exports = { + math: {}, + text: {}, +}; + +function defineSymbol(mode, font, group, replace, name) { + module.exports[mode][name] = { + font: font, + group: group, + replace: replace, + }; +} + +// Some abbreviations for commonly used strings. +// This helps minify the code, and also spotting typos using jshint. + +// modes: +var math = "math"; +var text = "text"; + +// fonts: +var main = "main"; +var ams = "ams"; + +// groups: +var accent = "accent"; +var bin = "bin"; +var close = "close"; +var inner = "inner"; +var mathord = "mathord"; +var op = "op"; +var open = "open"; +var punct = "punct"; +var rel = "rel"; +var spacing = "spacing"; +var textord = "textord"; + +// Now comes the symbol table + +// Relation Symbols +defineSymbol(math, main, rel, "\u2261", "\\equiv"); +defineSymbol(math, main, rel, "\u227a", "\\prec"); +defineSymbol(math, main, rel, "\u227b", "\\succ"); +defineSymbol(math, main, rel, "\u223c", "\\sim"); +defineSymbol(math, main, rel, "\u22a5", "\\perp"); +defineSymbol(math, main, rel, "\u2aaf", "\\preceq"); +defineSymbol(math, main, rel, "\u2ab0", "\\succeq"); +defineSymbol(math, main, rel, "\u2243", "\\simeq"); +defineSymbol(math, main, rel, "\u2223", "\\mid"); +defineSymbol(math, main, rel, "\u226a", "\\ll"); +defineSymbol(math, main, rel, "\u226b", "\\gg"); +defineSymbol(math, main, rel, "\u224d", "\\asymp"); +defineSymbol(math, main, rel, "\u2225", "\\parallel"); +defineSymbol(math, main, rel, "\u22c8", "\\bowtie"); +defineSymbol(math, main, rel, "\u2323", "\\smile"); +defineSymbol(math, main, rel, "\u2291", "\\sqsubseteq"); +defineSymbol(math, main, rel, "\u2292", "\\sqsupseteq"); +defineSymbol(math, main, rel, "\u2250", "\\doteq"); +defineSymbol(math, main, rel, "\u2322", "\\frown"); +defineSymbol(math, main, rel, "\u220b", "\\ni"); +defineSymbol(math, main, rel, "\u221d", "\\propto"); +defineSymbol(math, main, rel, "\u22a2", "\\vdash"); +defineSymbol(math, main, rel, "\u22a3", "\\dashv"); +defineSymbol(math, main, rel, "\u220b", "\\owns"); + +// Punctuation +defineSymbol(math, main, punct, "\u002e", "\\ldotp"); +defineSymbol(math, main, punct, "\u22c5", "\\cdotp"); + +// Misc Symbols +defineSymbol(math, main, textord, "\u0023", "\\#"); +defineSymbol(math, main, textord, "\u0026", "\\&"); +defineSymbol(math, main, textord, "\u2135", "\\aleph"); +defineSymbol(math, main, textord, "\u2200", "\\forall"); +defineSymbol(math, main, textord, "\u210f", "\\hbar"); +defineSymbol(math, main, textord, "\u2203", "\\exists"); +defineSymbol(math, main, textord, "\u2207", "\\nabla"); +defineSymbol(math, main, textord, "\u266d", "\\flat"); +defineSymbol(math, main, textord, "\u2113", "\\ell"); +defineSymbol(math, main, textord, "\u266e", "\\natural"); +defineSymbol(math, main, textord, "\u2663", "\\clubsuit"); +defineSymbol(math, main, textord, "\u2118", "\\wp"); +defineSymbol(math, main, textord, "\u266f", "\\sharp"); +defineSymbol(math, main, textord, "\u2662", "\\diamondsuit"); +defineSymbol(math, main, textord, "\u211c", "\\Re"); +defineSymbol(math, main, textord, "\u2661", "\\heartsuit"); +defineSymbol(math, main, textord, "\u2111", "\\Im"); +defineSymbol(math, main, textord, "\u2660", "\\spadesuit"); + +// Math and Text +defineSymbol(math, main, textord, "\u2020", "\\dag"); +defineSymbol(math, main, textord, "\u2021", "\\ddag"); + +// Large Delimiters +defineSymbol(math, main, close, "\u23b1", "\\rmoustache"); +defineSymbol(math, main, open, "\u23b0", "\\lmoustache"); +defineSymbol(math, main, close, "\u27ef", "\\rgroup"); +defineSymbol(math, main, open, "\u27ee", "\\lgroup"); + +// Binary Operators +defineSymbol(math, main, bin, "\u2213", "\\mp"); +defineSymbol(math, main, bin, "\u2296", "\\ominus"); +defineSymbol(math, main, bin, "\u228e", "\\uplus"); +defineSymbol(math, main, bin, "\u2293", "\\sqcap"); +defineSymbol(math, main, bin, "\u2217", "\\ast"); +defineSymbol(math, main, bin, "\u2294", "\\sqcup"); +defineSymbol(math, main, bin, "\u25ef", "\\bigcirc"); +defineSymbol(math, main, bin, "\u2219", "\\bullet"); +defineSymbol(math, main, bin, "\u2021", "\\ddagger"); +defineSymbol(math, main, bin, "\u2240", "\\wr"); +defineSymbol(math, main, bin, "\u2a3f", "\\amalg"); + +// Arrow Symbols +defineSymbol(math, main, rel, "\u27f5", "\\longleftarrow"); +defineSymbol(math, main, rel, "\u21d0", "\\Leftarrow"); +defineSymbol(math, main, rel, "\u27f8", "\\Longleftarrow"); +defineSymbol(math, main, rel, "\u27f6", "\\longrightarrow"); +defineSymbol(math, main, rel, "\u21d2", "\\Rightarrow"); +defineSymbol(math, main, rel, "\u27f9", "\\Longrightarrow"); +defineSymbol(math, main, rel, "\u2194", "\\leftrightarrow"); +defineSymbol(math, main, rel, "\u27f7", "\\longleftrightarrow"); +defineSymbol(math, main, rel, "\u21d4", "\\Leftrightarrow"); +defineSymbol(math, main, rel, "\u27fa", "\\Longleftrightarrow"); +defineSymbol(math, main, rel, "\u21a6", "\\mapsto"); +defineSymbol(math, main, rel, "\u27fc", "\\longmapsto"); +defineSymbol(math, main, rel, "\u2197", "\\nearrow"); +defineSymbol(math, main, rel, "\u21a9", "\\hookleftarrow"); +defineSymbol(math, main, rel, "\u21aa", "\\hookrightarrow"); +defineSymbol(math, main, rel, "\u2198", "\\searrow"); +defineSymbol(math, main, rel, "\u21bc", "\\leftharpoonup"); +defineSymbol(math, main, rel, "\u21c0", "\\rightharpoonup"); +defineSymbol(math, main, rel, "\u2199", "\\swarrow"); +defineSymbol(math, main, rel, "\u21bd", "\\leftharpoondown"); +defineSymbol(math, main, rel, "\u21c1", "\\rightharpoondown"); +defineSymbol(math, main, rel, "\u2196", "\\nwarrow"); +defineSymbol(math, main, rel, "\u21cc", "\\rightleftharpoons"); + +// AMS Negated Binary Relations +defineSymbol(math, ams, rel, "\u226e", "\\nless"); +defineSymbol(math, ams, rel, "\ue010", "\\nleqslant"); +defineSymbol(math, ams, rel, "\ue011", "\\nleqq"); +defineSymbol(math, ams, rel, "\u2a87", "\\lneq"); +defineSymbol(math, ams, rel, "\u2268", "\\lneqq"); +defineSymbol(math, ams, rel, "\ue00c", "\\lvertneqq"); +defineSymbol(math, ams, rel, "\u22e6", "\\lnsim"); +defineSymbol(math, ams, rel, "\u2a89", "\\lnapprox"); +defineSymbol(math, ams, rel, "\u2280", "\\nprec"); +defineSymbol(math, ams, rel, "\u22e0", "\\npreceq"); +defineSymbol(math, ams, rel, "\u22e8", "\\precnsim"); +defineSymbol(math, ams, rel, "\u2ab9", "\\precnapprox"); +defineSymbol(math, ams, rel, "\u2241", "\\nsim"); +defineSymbol(math, ams, rel, "\ue006", "\\nshortmid"); +defineSymbol(math, ams, rel, "\u2224", "\\nmid"); +defineSymbol(math, ams, rel, "\u22ac", "\\nvdash"); +defineSymbol(math, ams, rel, "\u22ad", "\\nvDash"); +defineSymbol(math, ams, rel, "\u22ea", "\\ntriangleleft"); +defineSymbol(math, ams, rel, "\u22ec", "\\ntrianglelefteq"); +defineSymbol(math, ams, rel, "\u228a", "\\subsetneq"); +defineSymbol(math, ams, rel, "\ue01a", "\\varsubsetneq"); +defineSymbol(math, ams, rel, "\u2acb", "\\subsetneqq"); +defineSymbol(math, ams, rel, "\ue017", "\\varsubsetneqq"); +defineSymbol(math, ams, rel, "\u226f", "\\ngtr"); +defineSymbol(math, ams, rel, "\ue00f", "\\ngeqslant"); +defineSymbol(math, ams, rel, "\ue00e", "\\ngeqq"); +defineSymbol(math, ams, rel, "\u2a88", "\\gneq"); +defineSymbol(math, ams, rel, "\u2269", "\\gneqq"); +defineSymbol(math, ams, rel, "\ue00d", "\\gvertneqq"); +defineSymbol(math, ams, rel, "\u22e7", "\\gnsim"); +defineSymbol(math, ams, rel, "\u2a8a", "\\gnapprox"); +defineSymbol(math, ams, rel, "\u2281", "\\nsucc"); +defineSymbol(math, ams, rel, "\u22e1", "\\nsucceq"); +defineSymbol(math, ams, rel, "\u22e9", "\\succnsim"); +defineSymbol(math, ams, rel, "\u2aba", "\\succnapprox"); +defineSymbol(math, ams, rel, "\u2246", "\\ncong"); +defineSymbol(math, ams, rel, "\ue007", "\\nshortparallel"); +defineSymbol(math, ams, rel, "\u2226", "\\nparallel"); +defineSymbol(math, ams, rel, "\u22af", "\\nVDash"); +defineSymbol(math, ams, rel, "\u22eb", "\\ntriangleright"); +defineSymbol(math, ams, rel, "\u22ed", "\\ntrianglerighteq"); +defineSymbol(math, ams, rel, "\ue018", "\\nsupseteqq"); +defineSymbol(math, ams, rel, "\u228b", "\\supsetneq"); +defineSymbol(math, ams, rel, "\ue01b", "\\varsupsetneq"); +defineSymbol(math, ams, rel, "\u2acc", "\\supsetneqq"); +defineSymbol(math, ams, rel, "\ue019", "\\varsupsetneqq"); +defineSymbol(math, ams, rel, "\u22ae", "\\nVdash"); +defineSymbol(math, ams, rel, "\u2ab5", "\\precneqq"); +defineSymbol(math, ams, rel, "\u2ab6", "\\succneqq"); +defineSymbol(math, ams, rel, "\ue016", "\\nsubseteqq"); +defineSymbol(math, ams, bin, "\u22b4", "\\unlhd"); +defineSymbol(math, ams, bin, "\u22b5", "\\unrhd"); + +// AMS Negated Arrows +defineSymbol(math, ams, rel, "\u219a", "\\nleftarrow"); +defineSymbol(math, ams, rel, "\u219b", "\\nrightarrow"); +defineSymbol(math, ams, rel, "\u21cd", "\\nLeftarrow"); +defineSymbol(math, ams, rel, "\u21cf", "\\nRightarrow"); +defineSymbol(math, ams, rel, "\u21ae", "\\nleftrightarrow"); +defineSymbol(math, ams, rel, "\u21ce", "\\nLeftrightarrow"); + +// AMS Misc +defineSymbol(math, ams, rel, "\u25b3", "\\vartriangle"); +defineSymbol(math, ams, textord, "\u210f", "\\hslash"); +defineSymbol(math, ams, textord, "\u25bd", "\\triangledown"); +defineSymbol(math, ams, textord, "\u25ca", "\\lozenge"); +defineSymbol(math, ams, textord, "\u24c8", "\\circledS"); +defineSymbol(math, ams, textord, "\u00ae", "\\circledR"); +defineSymbol(math, ams, textord, "\u2221", "\\measuredangle"); +defineSymbol(math, ams, textord, "\u2204", "\\nexists"); +defineSymbol(math, ams, textord, "\u2127", "\\mho"); +defineSymbol(math, ams, textord, "\u2132", "\\Finv"); +defineSymbol(math, ams, textord, "\u2141", "\\Game"); +defineSymbol(math, ams, textord, "\u006b", "\\Bbbk"); +defineSymbol(math, ams, textord, "\u2035", "\\backprime"); +defineSymbol(math, ams, textord, "\u25b2", "\\blacktriangle"); +defineSymbol(math, ams, textord, "\u25bc", "\\blacktriangledown"); +defineSymbol(math, ams, textord, "\u25a0", "\\blacksquare"); +defineSymbol(math, ams, textord, "\u29eb", "\\blacklozenge"); +defineSymbol(math, ams, textord, "\u2605", "\\bigstar"); +defineSymbol(math, ams, textord, "\u2222", "\\sphericalangle"); +defineSymbol(math, ams, textord, "\u2201", "\\complement"); +defineSymbol(math, ams, textord, "\u00f0", "\\eth"); +defineSymbol(math, ams, textord, "\u2571", "\\diagup"); +defineSymbol(math, ams, textord, "\u2572", "\\diagdown"); +defineSymbol(math, ams, textord, "\u25a1", "\\square"); +defineSymbol(math, ams, textord, "\u25a1", "\\Box"); +defineSymbol(math, ams, textord, "\u25ca", "\\Diamond"); +defineSymbol(math, ams, textord, "\u00a5", "\\yen"); +defineSymbol(math, ams, textord, "\u2713", "\\checkmark"); + +// AMS Hebrew +defineSymbol(math, ams, textord, "\u2136", "\\beth"); +defineSymbol(math, ams, textord, "\u2138", "\\daleth"); +defineSymbol(math, ams, textord, "\u2137", "\\gimel"); + +// AMS Greek +defineSymbol(math, ams, textord, "\u03dd", "\\digamma"); +defineSymbol(math, ams, textord, "\u03f0", "\\varkappa"); + +// AMS Delimiters +defineSymbol(math, ams, open, "\u250c", "\\ulcorner"); +defineSymbol(math, ams, close, "\u2510", "\\urcorner"); +defineSymbol(math, ams, open, "\u2514", "\\llcorner"); +defineSymbol(math, ams, close, "\u2518", "\\lrcorner"); + +// AMS Binary Relations +defineSymbol(math, ams, rel, "\u2266", "\\leqq"); +defineSymbol(math, ams, rel, "\u2a7d", "\\leqslant"); +defineSymbol(math, ams, rel, "\u2a95", "\\eqslantless"); +defineSymbol(math, ams, rel, "\u2272", "\\lesssim"); +defineSymbol(math, ams, rel, "\u2a85", "\\lessapprox"); +defineSymbol(math, ams, rel, "\u224a", "\\approxeq"); +defineSymbol(math, ams, bin, "\u22d6", "\\lessdot"); +defineSymbol(math, ams, rel, "\u22d8", "\\lll"); +defineSymbol(math, ams, rel, "\u2276", "\\lessgtr"); +defineSymbol(math, ams, rel, "\u22da", "\\lesseqgtr"); +defineSymbol(math, ams, rel, "\u2a8b", "\\lesseqqgtr"); +defineSymbol(math, ams, rel, "\u2251", "\\doteqdot"); +defineSymbol(math, ams, rel, "\u2253", "\\risingdotseq"); +defineSymbol(math, ams, rel, "\u2252", "\\fallingdotseq"); +defineSymbol(math, ams, rel, "\u223d", "\\backsim"); +defineSymbol(math, ams, rel, "\u22cd", "\\backsimeq"); +defineSymbol(math, ams, rel, "\u2ac5", "\\subseteqq"); +defineSymbol(math, ams, rel, "\u22d0", "\\Subset"); +defineSymbol(math, ams, rel, "\u228f", "\\sqsubset"); +defineSymbol(math, ams, rel, "\u227c", "\\preccurlyeq"); +defineSymbol(math, ams, rel, "\u22de", "\\curlyeqprec"); +defineSymbol(math, ams, rel, "\u227e", "\\precsim"); +defineSymbol(math, ams, rel, "\u2ab7", "\\precapprox"); +defineSymbol(math, ams, rel, "\u22b2", "\\vartriangleleft"); +defineSymbol(math, ams, rel, "\u22b4", "\\trianglelefteq"); +defineSymbol(math, ams, rel, "\u22a8", "\\vDash"); +defineSymbol(math, ams, rel, "\u22aa", "\\Vvdash"); +defineSymbol(math, ams, rel, "\u2323", "\\smallsmile"); +defineSymbol(math, ams, rel, "\u2322", "\\smallfrown"); +defineSymbol(math, ams, rel, "\u224f", "\\bumpeq"); +defineSymbol(math, ams, rel, "\u224e", "\\Bumpeq"); +defineSymbol(math, ams, rel, "\u2267", "\\geqq"); +defineSymbol(math, ams, rel, "\u2a7e", "\\geqslant"); +defineSymbol(math, ams, rel, "\u2a96", "\\eqslantgtr"); +defineSymbol(math, ams, rel, "\u2273", "\\gtrsim"); +defineSymbol(math, ams, rel, "\u2a86", "\\gtrapprox"); +defineSymbol(math, ams, bin, "\u22d7", "\\gtrdot"); +defineSymbol(math, ams, rel, "\u22d9", "\\ggg"); +defineSymbol(math, ams, rel, "\u2277", "\\gtrless"); +defineSymbol(math, ams, rel, "\u22db", "\\gtreqless"); +defineSymbol(math, ams, rel, "\u2a8c", "\\gtreqqless"); +defineSymbol(math, ams, rel, "\u2256", "\\eqcirc"); +defineSymbol(math, ams, rel, "\u2257", "\\circeq"); +defineSymbol(math, ams, rel, "\u225c", "\\triangleq"); +defineSymbol(math, ams, rel, "\u223c", "\\thicksim"); +defineSymbol(math, ams, rel, "\u2248", "\\thickapprox"); +defineSymbol(math, ams, rel, "\u2ac6", "\\supseteqq"); +defineSymbol(math, ams, rel, "\u22d1", "\\Supset"); +defineSymbol(math, ams, rel, "\u2290", "\\sqsupset"); +defineSymbol(math, ams, rel, "\u227d", "\\succcurlyeq"); +defineSymbol(math, ams, rel, "\u22df", "\\curlyeqsucc"); +defineSymbol(math, ams, rel, "\u227f", "\\succsim"); +defineSymbol(math, ams, rel, "\u2ab8", "\\succapprox"); +defineSymbol(math, ams, rel, "\u22b3", "\\vartriangleright"); +defineSymbol(math, ams, rel, "\u22b5", "\\trianglerighteq"); +defineSymbol(math, ams, rel, "\u22a9", "\\Vdash"); +defineSymbol(math, ams, rel, "\u2223", "\\shortmid"); +defineSymbol(math, ams, rel, "\u2225", "\\shortparallel"); +defineSymbol(math, ams, rel, "\u226c", "\\between"); +defineSymbol(math, ams, rel, "\u22d4", "\\pitchfork"); +defineSymbol(math, ams, rel, "\u221d", "\\varpropto"); +defineSymbol(math, ams, rel, "\u25c0", "\\blacktriangleleft"); +defineSymbol(math, ams, rel, "\u2234", "\\therefore"); +defineSymbol(math, ams, rel, "\u220d", "\\backepsilon"); +defineSymbol(math, ams, rel, "\u25b6", "\\blacktriangleright"); +defineSymbol(math, ams, rel, "\u2235", "\\because"); +defineSymbol(math, ams, rel, "\u22d8", "\\llless"); +defineSymbol(math, ams, rel, "\u22d9", "\\gggtr"); +defineSymbol(math, ams, bin, "\u22b2", "\\lhd"); +defineSymbol(math, ams, bin, "\u22b3", "\\rhd"); +defineSymbol(math, ams, rel, "\u2242", "\\eqsim"); +defineSymbol(math, main, rel, "\u22c8", "\\Join"); +defineSymbol(math, ams, rel, "\u2251", "\\Doteq"); + +// AMS Binary Operators +defineSymbol(math, ams, bin, "\u2214", "\\dotplus"); +defineSymbol(math, ams, bin, "\u2216", "\\smallsetminus"); +defineSymbol(math, ams, bin, "\u22d2", "\\Cap"); +defineSymbol(math, ams, bin, "\u22d3", "\\Cup"); +defineSymbol(math, ams, bin, "\u2a5e", "\\doublebarwedge"); +defineSymbol(math, ams, bin, "\u229f", "\\boxminus"); +defineSymbol(math, ams, bin, "\u229e", "\\boxplus"); +defineSymbol(math, ams, bin, "\u22c7", "\\divideontimes"); +defineSymbol(math, ams, bin, "\u22c9", "\\ltimes"); +defineSymbol(math, ams, bin, "\u22ca", "\\rtimes"); +defineSymbol(math, ams, bin, "\u22cb", "\\leftthreetimes"); +defineSymbol(math, ams, bin, "\u22cc", "\\rightthreetimes"); +defineSymbol(math, ams, bin, "\u22cf", "\\curlywedge"); +defineSymbol(math, ams, bin, "\u22ce", "\\curlyvee"); +defineSymbol(math, ams, bin, "\u229d", "\\circleddash"); +defineSymbol(math, ams, bin, "\u229b", "\\circledast"); +defineSymbol(math, ams, bin, "\u22c5", "\\centerdot"); +defineSymbol(math, ams, bin, "\u22ba", "\\intercal"); +defineSymbol(math, ams, bin, "\u22d2", "\\doublecap"); +defineSymbol(math, ams, bin, "\u22d3", "\\doublecup"); +defineSymbol(math, ams, bin, "\u22a0", "\\boxtimes"); + +// AMS Arrows +defineSymbol(math, ams, rel, "\u21e2", "\\dashrightarrow"); +defineSymbol(math, ams, rel, "\u21e0", "\\dashleftarrow"); +defineSymbol(math, ams, rel, "\u21c7", "\\leftleftarrows"); +defineSymbol(math, ams, rel, "\u21c6", "\\leftrightarrows"); +defineSymbol(math, ams, rel, "\u21da", "\\Lleftarrow"); +defineSymbol(math, ams, rel, "\u219e", "\\twoheadleftarrow"); +defineSymbol(math, ams, rel, "\u21a2", "\\leftarrowtail"); +defineSymbol(math, ams, rel, "\u21ab", "\\looparrowleft"); +defineSymbol(math, ams, rel, "\u21cb", "\\leftrightharpoons"); +defineSymbol(math, ams, rel, "\u21b6", "\\curvearrowleft"); +defineSymbol(math, ams, rel, "\u21ba", "\\circlearrowleft"); +defineSymbol(math, ams, rel, "\u21b0", "\\Lsh"); +defineSymbol(math, ams, rel, "\u21c8", "\\upuparrows"); +defineSymbol(math, ams, rel, "\u21bf", "\\upharpoonleft"); +defineSymbol(math, ams, rel, "\u21c3", "\\downharpoonleft"); +defineSymbol(math, ams, rel, "\u22b8", "\\multimap"); +defineSymbol(math, ams, rel, "\u21ad", "\\leftrightsquigarrow"); +defineSymbol(math, ams, rel, "\u21c9", "\\rightrightarrows"); +defineSymbol(math, ams, rel, "\u21c4", "\\rightleftarrows"); +defineSymbol(math, ams, rel, "\u21a0", "\\twoheadrightarrow"); +defineSymbol(math, ams, rel, "\u21a3", "\\rightarrowtail"); +defineSymbol(math, ams, rel, "\u21ac", "\\looparrowright"); +defineSymbol(math, ams, rel, "\u21b7", "\\curvearrowright"); +defineSymbol(math, ams, rel, "\u21bb", "\\circlearrowright"); +defineSymbol(math, ams, rel, "\u21b1", "\\Rsh"); +defineSymbol(math, ams, rel, "\u21ca", "\\downdownarrows"); +defineSymbol(math, ams, rel, "\u21be", "\\upharpoonright"); +defineSymbol(math, ams, rel, "\u21c2", "\\downharpoonright"); +defineSymbol(math, ams, rel, "\u21dd", "\\rightsquigarrow"); +defineSymbol(math, ams, rel, "\u21dd", "\\leadsto"); +defineSymbol(math, ams, rel, "\u21db", "\\Rrightarrow"); +defineSymbol(math, ams, rel, "\u21be", "\\restriction"); + +defineSymbol(math, main, textord, "\u2018", "`"); +defineSymbol(math, main, textord, "$", "\\$"); +defineSymbol(math, main, textord, "%", "\\%"); +defineSymbol(math, main, textord, "_", "\\_"); +defineSymbol(math, main, textord, "\u2220", "\\angle"); +defineSymbol(math, main, textord, "\u221e", "\\infty"); +defineSymbol(math, main, textord, "\u2032", "\\prime"); +defineSymbol(math, main, textord, "\u25b3", "\\triangle"); +defineSymbol(math, main, textord, "\u0393", "\\Gamma"); +defineSymbol(math, main, textord, "\u0394", "\\Delta"); +defineSymbol(math, main, textord, "\u0398", "\\Theta"); +defineSymbol(math, main, textord, "\u039b", "\\Lambda"); +defineSymbol(math, main, textord, "\u039e", "\\Xi"); +defineSymbol(math, main, textord, "\u03a0", "\\Pi"); +defineSymbol(math, main, textord, "\u03a3", "\\Sigma"); +defineSymbol(math, main, textord, "\u03a5", "\\Upsilon"); +defineSymbol(math, main, textord, "\u03a6", "\\Phi"); +defineSymbol(math, main, textord, "\u03a8", "\\Psi"); +defineSymbol(math, main, textord, "\u03a9", "\\Omega"); +defineSymbol(math, main, textord, "\u00ac", "\\neg"); +defineSymbol(math, main, textord, "\u00ac", "\\lnot"); +defineSymbol(math, main, textord, "\u22a4", "\\top"); +defineSymbol(math, main, textord, "\u22a5", "\\bot"); +defineSymbol(math, main, textord, "\u2205", "\\emptyset"); +defineSymbol(math, ams, textord, "\u2205", "\\varnothing"); +defineSymbol(math, main, mathord, "\u03b1", "\\alpha"); +defineSymbol(math, main, mathord, "\u03b2", "\\beta"); +defineSymbol(math, main, mathord, "\u03b3", "\\gamma"); +defineSymbol(math, main, mathord, "\u03b4", "\\delta"); +defineSymbol(math, main, mathord, "\u03f5", "\\epsilon"); +defineSymbol(math, main, mathord, "\u03b6", "\\zeta"); +defineSymbol(math, main, mathord, "\u03b7", "\\eta"); +defineSymbol(math, main, mathord, "\u03b8", "\\theta"); +defineSymbol(math, main, mathord, "\u03b9", "\\iota"); +defineSymbol(math, main, mathord, "\u03ba", "\\kappa"); +defineSymbol(math, main, mathord, "\u03bb", "\\lambda"); +defineSymbol(math, main, mathord, "\u03bc", "\\mu"); +defineSymbol(math, main, mathord, "\u03bd", "\\nu"); +defineSymbol(math, main, mathord, "\u03be", "\\xi"); +defineSymbol(math, main, mathord, "o", "\\omicron"); +defineSymbol(math, main, mathord, "\u03c0", "\\pi"); +defineSymbol(math, main, mathord, "\u03c1", "\\rho"); +defineSymbol(math, main, mathord, "\u03c3", "\\sigma"); +defineSymbol(math, main, mathord, "\u03c4", "\\tau"); +defineSymbol(math, main, mathord, "\u03c5", "\\upsilon"); +defineSymbol(math, main, mathord, "\u03d5", "\\phi"); +defineSymbol(math, main, mathord, "\u03c7", "\\chi"); +defineSymbol(math, main, mathord, "\u03c8", "\\psi"); +defineSymbol(math, main, mathord, "\u03c9", "\\omega"); +defineSymbol(math, main, mathord, "\u03b5", "\\varepsilon"); +defineSymbol(math, main, mathord, "\u03d1", "\\vartheta"); +defineSymbol(math, main, mathord, "\u03d6", "\\varpi"); +defineSymbol(math, main, mathord, "\u03f1", "\\varrho"); +defineSymbol(math, main, mathord, "\u03c2", "\\varsigma"); +defineSymbol(math, main, mathord, "\u03c6", "\\varphi"); +defineSymbol(math, main, bin, "\u2217", "*"); +defineSymbol(math, main, bin, "+", "+"); +defineSymbol(math, main, bin, "\u2212", "-"); +defineSymbol(math, main, bin, "\u22c5", "\\cdot"); +defineSymbol(math, main, bin, "\u2218", "\\circ"); +defineSymbol(math, main, bin, "\u00f7", "\\div"); +defineSymbol(math, main, bin, "\u00b1", "\\pm"); +defineSymbol(math, main, bin, "\u00d7", "\\times"); +defineSymbol(math, main, bin, "\u2229", "\\cap"); +defineSymbol(math, main, bin, "\u222a", "\\cup"); +defineSymbol(math, main, bin, "\u2216", "\\setminus"); +defineSymbol(math, main, bin, "\u2227", "\\land"); +defineSymbol(math, main, bin, "\u2228", "\\lor"); +defineSymbol(math, main, bin, "\u2227", "\\wedge"); +defineSymbol(math, main, bin, "\u2228", "\\vee"); +defineSymbol(math, main, textord, "\u221a", "\\surd"); +defineSymbol(math, main, open, "(", "("); +defineSymbol(math, main, open, "[", "["); +defineSymbol(math, main, open, "\u27e8", "\\langle"); +defineSymbol(math, main, open, "\u2223", "\\lvert"); +defineSymbol(math, main, open, "\u2225", "\\lVert"); +defineSymbol(math, main, close, ")", ")"); +defineSymbol(math, main, close, "]", "]"); +defineSymbol(math, main, close, "?", "?"); +defineSymbol(math, main, close, "!", "!"); +defineSymbol(math, main, close, "\u27e9", "\\rangle"); +defineSymbol(math, main, close, "\u2223", "\\rvert"); +defineSymbol(math, main, close, "\u2225", "\\rVert"); +defineSymbol(math, main, rel, "=", "="); +defineSymbol(math, main, rel, "<", "<"); +defineSymbol(math, main, rel, ">", ">"); +defineSymbol(math, main, rel, ":", ":"); +defineSymbol(math, main, rel, "\u2248", "\\approx"); +defineSymbol(math, main, rel, "\u2245", "\\cong"); +defineSymbol(math, main, rel, "\u2265", "\\ge"); +defineSymbol(math, main, rel, "\u2265", "\\geq"); +defineSymbol(math, main, rel, "\u2190", "\\gets"); +defineSymbol(math, main, rel, ">", "\\gt"); +defineSymbol(math, main, rel, "\u2208", "\\in"); +defineSymbol(math, main, rel, "\u2209", "\\notin"); +defineSymbol(math, main, rel, "\u2282", "\\subset"); +defineSymbol(math, main, rel, "\u2283", "\\supset"); +defineSymbol(math, main, rel, "\u2286", "\\subseteq"); +defineSymbol(math, main, rel, "\u2287", "\\supseteq"); +defineSymbol(math, ams, rel, "\u2288", "\\nsubseteq"); +defineSymbol(math, ams, rel, "\u2289", "\\nsupseteq"); +defineSymbol(math, main, rel, "\u22a8", "\\models"); +defineSymbol(math, main, rel, "\u2190", "\\leftarrow"); +defineSymbol(math, main, rel, "\u2264", "\\le"); +defineSymbol(math, main, rel, "\u2264", "\\leq"); +defineSymbol(math, main, rel, "<", "\\lt"); +defineSymbol(math, main, rel, "\u2260", "\\ne"); +defineSymbol(math, main, rel, "\u2260", "\\neq"); +defineSymbol(math, main, rel, "\u2192", "\\rightarrow"); +defineSymbol(math, main, rel, "\u2192", "\\to"); +defineSymbol(math, ams, rel, "\u2271", "\\ngeq"); +defineSymbol(math, ams, rel, "\u2270", "\\nleq"); +defineSymbol(math, main, spacing, null, "\\!"); +defineSymbol(math, main, spacing, "\u00a0", "\\ "); +defineSymbol(math, main, spacing, "\u00a0", "~"); +defineSymbol(math, main, spacing, null, "\\,"); +defineSymbol(math, main, spacing, null, "\\:"); +defineSymbol(math, main, spacing, null, "\\;"); +defineSymbol(math, main, spacing, null, "\\enspace"); +defineSymbol(math, main, spacing, null, "\\qquad"); +defineSymbol(math, main, spacing, null, "\\quad"); +defineSymbol(math, main, spacing, "\u00a0", "\\space"); +defineSymbol(math, main, punct, ",", ","); +defineSymbol(math, main, punct, ";", ";"); +defineSymbol(math, main, punct, ":", "\\colon"); +defineSymbol(math, ams, bin, "\u22bc", "\\barwedge"); +defineSymbol(math, ams, bin, "\u22bb", "\\veebar"); +defineSymbol(math, main, bin, "\u2299", "\\odot"); +defineSymbol(math, main, bin, "\u2295", "\\oplus"); +defineSymbol(math, main, bin, "\u2297", "\\otimes"); +defineSymbol(math, main, textord, "\u2202", "\\partial"); +defineSymbol(math, main, bin, "\u2298", "\\oslash"); +defineSymbol(math, ams, bin, "\u229a", "\\circledcirc"); +defineSymbol(math, ams, bin, "\u22a1", "\\boxdot"); +defineSymbol(math, main, bin, "\u25b3", "\\bigtriangleup"); +defineSymbol(math, main, bin, "\u25bd", "\\bigtriangledown"); +defineSymbol(math, main, bin, "\u2020", "\\dagger"); +defineSymbol(math, main, bin, "\u22c4", "\\diamond"); +defineSymbol(math, main, bin, "\u22c6", "\\star"); +defineSymbol(math, main, bin, "\u25c3", "\\triangleleft"); +defineSymbol(math, main, bin, "\u25b9", "\\triangleright"); +defineSymbol(math, main, open, "{", "\\{"); +defineSymbol(math, main, close, "}", "\\}"); +defineSymbol(math, main, open, "{", "\\lbrace"); +defineSymbol(math, main, close, "}", "\\rbrace"); +defineSymbol(math, main, open, "[", "\\lbrack"); +defineSymbol(math, main, close, "]", "\\rbrack"); +defineSymbol(math, main, open, "\u230a", "\\lfloor"); +defineSymbol(math, main, close, "\u230b", "\\rfloor"); +defineSymbol(math, main, open, "\u2308", "\\lceil"); +defineSymbol(math, main, close, "\u2309", "\\rceil"); +defineSymbol(math, main, textord, "\\", "\\backslash"); +defineSymbol(math, main, textord, "\u2223", "|"); +defineSymbol(math, main, textord, "\u2223", "\\vert"); +defineSymbol(math, main, textord, "\u2225", "\\|"); +defineSymbol(math, main, textord, "\u2225", "\\Vert"); +defineSymbol(math, main, rel, "\u2191", "\\uparrow"); +defineSymbol(math, main, rel, "\u21d1", "\\Uparrow"); +defineSymbol(math, main, rel, "\u2193", "\\downarrow"); +defineSymbol(math, main, rel, "\u21d3", "\\Downarrow"); +defineSymbol(math, main, rel, "\u2195", "\\updownarrow"); +defineSymbol(math, main, rel, "\u21d5", "\\Updownarrow"); +defineSymbol(math, math, op, "\u2210", "\\coprod"); +defineSymbol(math, math, op, "\u22c1", "\\bigvee"); +defineSymbol(math, math, op, "\u22c0", "\\bigwedge"); +defineSymbol(math, math, op, "\u2a04", "\\biguplus"); +defineSymbol(math, math, op, "\u22c2", "\\bigcap"); +defineSymbol(math, math, op, "\u22c3", "\\bigcup"); +defineSymbol(math, math, op, "\u222b", "\\int"); +defineSymbol(math, math, op, "\u222b", "\\intop"); +defineSymbol(math, math, op, "\u222c", "\\iint"); +defineSymbol(math, math, op, "\u222d", "\\iiint"); +defineSymbol(math, math, op, "\u220f", "\\prod"); +defineSymbol(math, math, op, "\u2211", "\\sum"); +defineSymbol(math, math, op, "\u2a02", "\\bigotimes"); +defineSymbol(math, math, op, "\u2a01", "\\bigoplus"); +defineSymbol(math, math, op, "\u2a00", "\\bigodot"); +defineSymbol(math, math, op, "\u222e", "\\oint"); +defineSymbol(math, math, op, "\u2a06", "\\bigsqcup"); +defineSymbol(math, math, op, "\u222b", "\\smallint"); +defineSymbol(math, main, inner, "\u2026", "\\ldots"); +defineSymbol(math, main, inner, "\u22ef", "\\cdots"); +defineSymbol(math, main, inner, "\u22f1", "\\ddots"); +defineSymbol(math, main, textord, "\u22ee", "\\vdots"); +defineSymbol(math, main, accent, "\u00b4", "\\acute"); +defineSymbol(math, main, accent, "\u0060", "\\grave"); +defineSymbol(math, main, accent, "\u00a8", "\\ddot"); +defineSymbol(math, main, accent, "\u007e", "\\tilde"); +defineSymbol(math, main, accent, "\u00af", "\\bar"); +defineSymbol(math, main, accent, "\u02d8", "\\breve"); +defineSymbol(math, main, accent, "\u02c7", "\\check"); +defineSymbol(math, main, accent, "\u005e", "\\hat"); +defineSymbol(math, main, accent, "\u20d7", "\\vec"); +defineSymbol(math, main, accent, "\u02d9", "\\dot"); +defineSymbol(math, main, mathord, "\u0131", "\\imath"); +defineSymbol(math, main, mathord, "\u0237", "\\jmath"); + +defineSymbol(text, main, textord, "\u2013", "--"); +defineSymbol(text, main, textord, "\u2014", "---"); +defineSymbol(text, main, textord, "\u2018", "`"); +defineSymbol(text, main, textord, "\u2019", "'"); +defineSymbol(text, main, textord, "\u201c", "``"); +defineSymbol(text, main, textord, "\u201d", "''"); +defineSymbol(math, main, textord, "\u00b0", "\\degree"); +defineSymbol(text, main, textord, "\u00b0", "\\degree"); +defineSymbol(math, main, mathord, "\u00a3", "\\pounds"); +defineSymbol(math, ams, textord, "\u2720", "\\maltese"); +defineSymbol(text, ams, textord, "\u2720", "\\maltese"); + +defineSymbol(text, main, spacing, "\u00a0", "\\ "); +defineSymbol(text, main, spacing, "\u00a0", " "); +defineSymbol(text, main, spacing, "\u00a0", "~"); + +// There are lots of symbols which are the same, so we add them in afterwards. +var i; +var ch; + +// All of these are textords in math mode +var mathTextSymbols = "0123456789/@.\""; +for (i = 0; i < mathTextSymbols.length; i++) { + ch = mathTextSymbols.charAt(i); + defineSymbol(math, main, textord, ch, ch); +} + +// All of these are textords in text mode +var textSymbols = "0123456789!@*()-=+[]\";:?/.,"; +for (i = 0; i < textSymbols.length; i++) { + ch = textSymbols.charAt(i); + defineSymbol(text, main, textord, ch, ch); +} + +// All of these are textords in text mode, and mathords in math mode +var letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; +for (i = 0; i < letters.length; i++) { + ch = letters.charAt(i); + defineSymbol(math, main, mathord, ch, ch); + defineSymbol(text, main, textord, ch, ch); +} + +// Latin-1 letters +for (i = 0x00C0; i <= 0x00D6; i++) { + ch = String.fromCharCode(i); + defineSymbol(text, main, textord, ch, ch); +} + +for (i = 0x00D8; i <= 0x00F6; i++) { + ch = String.fromCharCode(i); + defineSymbol(text, main, textord, ch, ch); +} + +for (i = 0x00F8; i <= 0x00FF; i++) { + ch = String.fromCharCode(i); + defineSymbol(text, main, textord, ch, ch); +} + +// Cyrillic +for (i = 0x0410; i <= 0x044F; i++) { + ch = String.fromCharCode(i); + defineSymbol(text, main, textord, ch, ch); +} + +},{}],24:[function(require,module,exports){ +var hangulRegex = /[\uAC00-\uD7AF]/; + +// This regex combines +// - Hiragana: [\u3040-\u309F] +// - Katakana: [\u30A0-\u30FF] +// - CJK ideograms: [\u4E00-\u9FAF] +// - Hangul syllables: [\uAC00-\uD7AF] +// Notably missing are halfwidth Katakana and Romanji glyphs. +var cjkRegex = + /[\u3040-\u309F]|[\u30A0-\u30FF]|[\u4E00-\u9FAF]|[\uAC00-\uD7AF]/; + +module.exports = { + cjkRegex: cjkRegex, + hangulRegex: hangulRegex, +}; + +},{}],25:[function(require,module,exports){ +/** + * This file contains a list of utility functions which are useful in other + * files. + */ + +/** + * Provide an `indexOf` function which works in IE8, but defers to native if + * possible. + */ +var nativeIndexOf = Array.prototype.indexOf; +var indexOf = function(list, elem) { + if (list == null) { + return -1; + } + if (nativeIndexOf && list.indexOf === nativeIndexOf) { + return list.indexOf(elem); + } + var i = 0; + var l = list.length; + for (; i < l; i++) { + if (list[i] === elem) { + return i; + } + } + return -1; +}; + +/** + * Return whether an element is contained in a list + */ +var contains = function(list, elem) { + return indexOf(list, elem) !== -1; +}; + +/** + * Provide a default value if a setting is undefined + */ +var deflt = function(setting, defaultIfUndefined) { + return setting === undefined ? defaultIfUndefined : setting; +}; + +// hyphenate and escape adapted from Facebook's React under Apache 2 license + +var uppercase = /([A-Z])/g; +var hyphenate = function(str) { + return str.replace(uppercase, "-$1").toLowerCase(); +}; + +var ESCAPE_LOOKUP = { + "&": "&", + ">": ">", + "<": "<", + "\"": """, + "'": "'", +}; + +var ESCAPE_REGEX = /[&><"']/g; + +function escaper(match) { + return ESCAPE_LOOKUP[match]; +} + +/** + * Escapes text to prevent scripting attacks. + * + * @param {*} text Text value to escape. + * @return {string} An escaped string. + */ +function escape(text) { + return ("" + text).replace(ESCAPE_REGEX, escaper); +} + +/** + * A function to set the text content of a DOM element in all supported + * browsers. Note that we don't define this if there is no document. + */ +var setTextContent; +if (typeof document !== "undefined") { + var testNode = document.createElement("span"); + if ("textContent" in testNode) { + setTextContent = function(node, text) { + node.textContent = text; + }; + } else { + setTextContent = function(node, text) { + node.innerText = text; + }; + } +} + +/** + * A function to clear a node. + */ +function clearNode(node) { + setTextContent(node, ""); +} + +module.exports = { + contains: contains, + deflt: deflt, + escape: escape, + hyphenate: hyphenate, + indexOf: indexOf, + setTextContent: setTextContent, + clearNode: clearNode, +}; + +},{}]},{},[1])(1) +});
\ No newline at end of file diff --git a/vendor/assets/javascripts/timeago.js b/vendor/assets/javascripts/timeago.js new file mode 100644 index 00000000000..0eb6f7967a5 --- /dev/null +++ b/vendor/assets/javascripts/timeago.js @@ -0,0 +1,237 @@ +/** + * Copyright (c) 2016 hustcc + * License: MIT + * Version: v2.0.2 + * https://github.com/hustcc/timeago.js + * This is a forked from (https://gitlab.com/ClemMakesApps/timeago.js) +**/ +/* eslint-disable */ +/* jshint expr: true */ +!function (root, factory) { + if (typeof module === 'object' && module.exports) + module.exports = factory(root); + else + root.timeago = factory(root); +}(typeof window !== 'undefined' ? window : this, +function () { + var cnt = 0, // the timer counter, for timer key + indexMapEn = 'second_minute_hour_day_week_month_year'.split('_'), + + // build-in locales: en & zh_CN + locales = { + 'en': function(number, index) { + if (index === 0) return ['just now', 'right now']; + var unit = indexMapEn[parseInt(index / 2)]; + if (number > 1) unit += 's'; + return [number + ' ' + unit + ' ago', 'in ' + number + ' ' + unit]; + }, + }, + // second, minute, hour, day, week, month, year(365 days) + SEC_ARRAY = [60, 60, 24, 7, 365/7/12, 12], + SEC_ARRAY_LEN = 6, + ATTR_DATETIME = 'datetime'; + + // format Date / string / timestamp to Date instance. + function toDate(input) { + if (input instanceof Date) return input; + if (!isNaN(input)) return new Date(toInt(input)); + if (/^\d+$/.test(input)) return new Date(toInt(input, 10)); + input = (input || '').trim().replace(/\.\d+/, '') // remove milliseconds + .replace(/-/, '/').replace(/-/, '/') + .replace(/T/, ' ').replace(/Z/, ' UTC') + .replace(/([\+\-]\d\d)\:?(\d\d)/, ' $1$2'); // -04:00 -> -0400 + return new Date(input); + } + // change f into int, remove Decimal. just for code compression + function toInt(f) { + return parseInt(f); + } + // format the diff second to *** time ago, with setting locale + function formatDiff(diff, locale, defaultLocale) { + // if locale is not exist, use defaultLocale. + // if defaultLocale is not exist, use build-in `en`. + // be sure of no error when locale is not exist. + locale = locales[locale] ? locale : (locales[defaultLocale] ? defaultLocale : 'en'); + // if (! locales[locale]) locale = defaultLocale; + var i = 0; + agoin = diff < 0 ? 1 : 0; // timein or timeago + diff = Math.abs(diff); + + for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) { + diff /= SEC_ARRAY[i]; + } + diff = toInt(diff); + i *= 2; + + if (diff > (i === 0 ? 9 : 1)) i += 1; + return locales[locale](diff, i)[agoin].replace('%s', diff); + } + // calculate the diff second between date to be formated an now date. + function diffSec(date, nowDate) { + nowDate = nowDate ? toDate(nowDate) : new Date(); + return (nowDate - toDate(date)) / 1000; + } + /** + * nextInterval: calculate the next interval time. + * - diff: the diff sec between now and date to be formated. + * + * What's the meaning? + * diff = 61 then return 59 + * diff = 3601 (an hour + 1 second), then return 3599 + * make the interval with high performace. + **/ + function nextInterval(diff) { + var rst = 1, i = 0, d = Math.abs(diff); + for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) { + diff /= SEC_ARRAY[i]; + rst *= SEC_ARRAY[i]; + } + // return leftSec(d, rst); + d = d % rst; + d = d ? rst - d : rst; + return Math.ceil(d); + } + // get the datetime attribute, jQuery and DOM + function getDateAttr(node) { + if (node.getAttribute) return node.getAttribute(ATTR_DATETIME); + if(node.attr) return node.attr(ATTR_DATETIME); + } + /** + * timeago: the function to get `timeago` instance. + * - nowDate: the relative date, default is new Date(). + * - defaultLocale: the default locale, default is en. if your set it, then the `locale` parameter of format is not needed of you. + * + * How to use it? + * var timeagoLib = require('timeago.js'); + * var timeago = timeagoLib(); // all use default. + * var timeago = timeagoLib('2016-09-10'); // the relative date is 2016-09-10, so the 2016-09-11 will be 1 day ago. + * var timeago = timeagoLib(null, 'zh_CN'); // set default locale is `zh_CN`. + * var timeago = timeagoLib('2016-09-10', 'zh_CN'); // the relative date is 2016-09-10, and locale is zh_CN, so the 2016-09-11 will be 1天前. + **/ + function Timeago(nowDate, defaultLocale) { + var timers = {}; // real-time render timers + // if do not set the defaultLocale, set it with `en` + if (! defaultLocale) defaultLocale = 'en'; // use default build-in locale + // what the timer will do + function doRender(node, date, locale, cnt) { + var diff = diffSec(date, nowDate); + node.innerHTML = formatDiff(diff, locale, defaultLocale); + // waiting %s seconds, do the next render + timers['k' + cnt] = setTimeout(function() { + doRender(node, date, locale, cnt); + }, nextInterval(diff) * 1000); + } + /** + * nextInterval: calculate the next interval time. + * - diff: the diff sec between now and date to be formated. + * + * What's the meaning? + * diff = 61 then return 59 + * diff = 3601 (an hour + 1 second), then return 3599 + * make the interval with high performace. + **/ + // this.nextInterval = function(diff) { // for dev test + // var rst = 1, i = 0, d = Math.abs(diff); + // for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) { + // diff /= SEC_ARRAY[i]; + // rst *= SEC_ARRAY[i]; + // } + // // return leftSec(d, rst); + // d = d % rst; + // d = d ? rst - d : rst; + // return Math.ceil(d); + // }; // for dev test + /** + * format: format the date to *** time ago, with setting or default locale + * - date: the date / string / timestamp to be formated + * - locale: the formated string's locale name, e.g. en / zh_CN + * + * How to use it? + * var timeago = require('timeago.js')(); + * timeago.format(new Date(), 'pl'); // Date instance + * timeago.format('2016-09-10', 'fr'); // formated date string + * timeago.format(1473473400269); // timestamp with ms + **/ + this.format = function(date, locale) { + return formatDiff(diffSec(date, nowDate), locale, defaultLocale); + }; + /** + * render: render the DOM real-time. + * - nodes: which nodes will be rendered. + * - locale: the locale name used to format date. + * + * How to use it? + * var timeago = new require('timeago.js')(); + * // 1. javascript selector + * timeago.render(document.querySelectorAll('.need_to_be_rendered')); + * // 2. use jQuery selector + * timeago.render($('.need_to_be_rendered'), 'pl'); + * + * Notice: please be sure the dom has attribute `datetime`. + **/ + this.render = function(nodes, locale) { + if (nodes.length === undefined) nodes = [nodes]; + for (var i = 0; i < nodes.length; i++) { + doRender(nodes[i], getDateAttr(nodes[i]), locale, ++ cnt); // render item + } + }; + /** + * cancel: cancel all the timers which are doing real-time render. + * + * How to use it? + * var timeago = new require('timeago.js')(); + * timeago.render(document.querySelectorAll('.need_to_be_rendered')); + * timeago.cancel(); // will stop all the timer, stop render in real time. + **/ + this.cancel = function() { + for (var key in timers) { + clearTimeout(timers[key]); + } + timers = {}; + }; + /** + * setLocale: set the default locale name. + * + * How to use it? + * var timeago = require('timeago.js'); + * timeago = new timeago(); + * timeago.setLocale('fr'); + **/ + this.setLocale = function(locale) { + defaultLocale = locale; + }; + return this; + } + /** + * timeago: the function to get `timeago` instance. + * - nowDate: the relative date, default is new Date(). + * - defaultLocale: the default locale, default is en. if your set it, then the `locale` parameter of format is not needed of you. + * + * How to use it? + * var timeagoLib = require('timeago.js'); + * var timeago = timeagoLib(); // all use default. + * var timeago = timeagoLib('2016-09-10'); // the relative date is 2016-09-10, so the 2016-09-11 will be 1 day ago. + * var timeago = timeagoLib(null, 'zh_CN'); // set default locale is `zh_CN`. + * var timeago = timeagoLib('2016-09-10', 'zh_CN'); // the relative date is 2016-09-10, and locale is zh_CN, so the 2016-09-11 will be 1天前. + **/ + function timeagoFactory(nowDate, defaultLocale) { + return new Timeago(nowDate, defaultLocale); + } + /** + * register: register a new language locale + * - locale: locale name, e.g. en / zh_CN, notice the standard. + * - localeFunc: the locale process function + * + * How to use it? + * var timeagoLib = require('timeago.js'); + * + * timeagoLib.register('the locale name', the_locale_func); + * // or + * timeagoLib.register('pl', require('timeago.js/locales/pl')); + **/ + timeagoFactory.register = function(locale, localeFunc) { + locales[locale] = localeFunc; + }; + + return timeagoFactory; +}); diff --git a/vendor/assets/javascripts/vue.full.js b/vendor/assets/javascripts/vue.full.js index 7ae95897a01..ea15bfac416 100644 --- a/vendor/assets/javascripts/vue.full.js +++ b/vendor/assets/javascripts/vue.full.js @@ -1,10073 +1,7515 @@ /*! - * Vue.js v1.0.26 - * (c) 2016 Evan You + * Vue.js v2.0.3 + * (c) 2014-2016 Evan You * Released under the MIT License. */ (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.Vue = factory()); -}(this, function () { 'use strict'; +}(this, (function () { 'use strict'; - function set(obj, key, val) { - if (hasOwn(obj, key)) { - obj[key] = val; - return; - } - if (obj._isVue) { - set(obj._data, key, val); - return; - } - var ob = obj.__ob__; - if (!ob) { - obj[key] = val; - return; - } - ob.convert(key, val); - ob.dep.notify(); - if (ob.vms) { - var i = ob.vms.length; - while (i--) { - var vm = ob.vms[i]; - vm._proxy(key); - vm._digest(); - } - } - return val; - } +/* */ - /** - * Delete a property and trigger change if necessary. - * - * @param {Object} obj - * @param {String} key - */ +/** + * Convert a value to a string that is actually rendered. + */ +function _toString (val) { + return val == null + ? '' + : typeof val === 'object' + ? JSON.stringify(val, null, 2) + : String(val) +} + +/** + * Convert a input value to a number for persistence. + * If the conversion fails, return original string. + */ +function toNumber (val) { + var n = parseFloat(val, 10); + return (n || n === 0) ? n : val +} + +/** + * Make a map and return a function for checking if a key + * is in that map. + */ +function makeMap ( + str, + expectsLowerCase +) { + var map = Object.create(null); + var list = str.split(','); + for (var i = 0; i < list.length; i++) { + map[list[i]] = true; + } + return expectsLowerCase + ? function (val) { return map[val.toLowerCase()]; } + : function (val) { return map[val]; } +} + +/** + * Check if a tag is a built-in tag. + */ +var isBuiltInTag = makeMap('slot,component', true); - function del(obj, key) { - if (!hasOwn(obj, key)) { - return; - } - delete obj[key]; - var ob = obj.__ob__; - if (!ob) { - if (obj._isVue) { - delete obj._data[key]; - obj._digest(); - } - return; - } - ob.dep.notify(); - if (ob.vms) { - var i = ob.vms.length; - while (i--) { - var vm = ob.vms[i]; - vm._unproxy(key); - vm._digest(); - } +/** + * Remove an item from an array + */ +function remove$1 (arr, item) { + if (arr.length) { + var index = arr.indexOf(item); + if (index > -1) { + return arr.splice(index, 1) } } +} - var hasOwnProperty = Object.prototype.hasOwnProperty; - /** - * Check whether the object has the property. - * - * @param {Object} obj - * @param {String} key - * @return {Boolean} - */ +/** + * Check whether the object has the property. + */ +var hasOwnProperty = Object.prototype.hasOwnProperty; +function hasOwn (obj, key) { + return hasOwnProperty.call(obj, key) +} + +/** + * Check if value is primitive + */ +function isPrimitive (value) { + return typeof value === 'string' || typeof value === 'number' +} - function hasOwn(obj, key) { - return hasOwnProperty.call(obj, key); +/** + * Create a cached version of a pure function. + */ +function cached (fn) { + var cache = Object.create(null); + return function cachedFn (str) { + var hit = cache[str]; + return hit || (cache[str] = fn(str)) } +} - /** - * Check if an expression is a literal value. - * - * @param {String} exp - * @return {Boolean} - */ +/** + * Camelize a hyphen-delmited string. + */ +var camelizeRE = /-(\w)/g; +var camelize = cached(function (str) { + return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; }) +}); - var literalValueRE = /^\s?(true|false|-?[\d\.]+|'[^']*'|"[^"]*")\s?$/; +/** + * Capitalize a string. + */ +var capitalize = cached(function (str) { + return str.charAt(0).toUpperCase() + str.slice(1) +}); - function isLiteral(exp) { - return literalValueRE.test(exp); +/** + * Hyphenate a camelCase string. + */ +var hyphenateRE = /([^-])([A-Z])/g; +var hyphenate = cached(function (str) { + return str + .replace(hyphenateRE, '$1-$2') + .replace(hyphenateRE, '$1-$2') + .toLowerCase() +}); + +/** + * Simple bind, faster than native + */ +function bind$1 (fn, ctx) { + function boundFn (a) { + var l = arguments.length; + return l + ? l > 1 + ? fn.apply(ctx, arguments) + : fn.call(ctx, a) + : fn.call(ctx) + } + // record original fn length + boundFn._length = fn.length; + return boundFn +} + +/** + * Convert an Array-like object to a real Array. + */ +function toArray (list, start) { + start = start || 0; + var i = list.length - start; + var ret = new Array(i); + while (i--) { + ret[i] = list[i + start]; + } + return ret +} + +/** + * Mix properties into target object. + */ +function extend (to, _from) { + for (var key in _from) { + to[key] = _from[key]; } + return to +} - /** - * Check if a string starts with $ or _ - * - * @param {String} str - * @return {Boolean} - */ +/** + * Quick object check - this is primarily used to tell + * Objects from primitive values when we know the value + * is a JSON-compliant type. + */ +function isObject (obj) { + return obj !== null && typeof obj === 'object' +} - function isReserved(str) { - var c = (str + '').charCodeAt(0); - return c === 0x24 || c === 0x5F; +/** + * Strict object type check. Only returns true + * for plain JavaScript objects. + */ +var toString = Object.prototype.toString; +var OBJECT_STRING = '[object Object]'; +function isPlainObject (obj) { + return toString.call(obj) === OBJECT_STRING +} + +/** + * Merge an Array of Objects into a single Object. + */ +function toObject (arr) { + var res = {}; + for (var i = 0; i < arr.length; i++) { + if (arr[i]) { + extend(res, arr[i]); + } } + return res +} - /** - * Guard text output, make sure undefined outputs - * empty string - * - * @param {*} value - * @return {String} - */ +/** + * Perform no operation. + */ +function noop () {} - function _toString(value) { - return value == null ? '' : value.toString(); - } +/** + * Always return false. + */ +var no = function () { return false; }; - /** - * Check and convert possible numeric strings to numbers - * before setting back to data - * - * @param {*} value - * @return {*|Number} - */ +/** + * Generate a static keys string from compiler modules. + */ +function genStaticKeys (modules) { + return modules.reduce(function (keys, m) { + return keys.concat(m.staticKeys || []) + }, []).join(',') +} + +/** + * Check if two values are loosely equal - that is, + * if they are plain objects, do they have the same shape? + */ +function looseEqual (a, b) { + /* eslint-disable eqeqeq */ + return a == b || ( + isObject(a) && isObject(b) + ? JSON.stringify(a) === JSON.stringify(b) + : false + ) + /* eslint-enable eqeqeq */ +} - function toNumber(value) { - if (typeof value !== 'string') { - return value; - } else { - var parsed = Number(value); - return isNaN(parsed) ? value : parsed; - } +function looseIndexOf (arr, val) { + for (var i = 0; i < arr.length; i++) { + if (looseEqual(arr[i], val)) { return i } } + return -1 +} - /** - * Convert string boolean literals into real booleans. - * - * @param {*} value - * @return {*|Boolean} - */ - - function toBoolean(value) { - return value === 'true' ? true : value === 'false' ? false : value; - } +/* */ +var config = { /** - * Strip quotes from a string - * - * @param {String} str - * @return {String | false} + * Option merge strategies (used in core/util/options) */ - - function stripQuotes(str) { - var a = str.charCodeAt(0); - var b = str.charCodeAt(str.length - 1); - return a === b && (a === 0x22 || a === 0x27) ? str.slice(1, -1) : str; - } + optionMergeStrategies: Object.create(null), /** - * Camelize a hyphen-delmited string. - * - * @param {String} str - * @return {String} + * Whether to suppress warnings. */ - - var camelizeRE = /-(\w)/g; - - function camelize(str) { - return str.replace(camelizeRE, toUpper); - } - - function toUpper(_, c) { - return c ? c.toUpperCase() : ''; - } + silent: false, /** - * Hyphenate a camelCase string. - * - * @param {String} str - * @return {String} + * Whether to enable devtools */ - - var hyphenateRE = /([a-z\d])([A-Z])/g; - - function hyphenate(str) { - return str.replace(hyphenateRE, '$1-$2').toLowerCase(); - } + devtools: "development" !== 'production', /** - * Converts hyphen/underscore/slash delimitered names into - * camelized classNames. - * - * e.g. my-component => MyComponent - * some_else => SomeElse - * some/comp => SomeComp - * - * @param {String} str - * @return {String} + * Error handler for watcher errors */ - - var classifyRE = /(?:^|[-_\/])(\w)/g; - - function classify(str) { - return str.replace(classifyRE, toUpper); - } + errorHandler: null, /** - * Simple bind, faster than native - * - * @param {Function} fn - * @param {Object} ctx - * @return {Function} + * Ignore certain custom elements */ - - function bind(fn, ctx) { - return function (a) { - var l = arguments.length; - return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx); - }; - } + ignoredElements: null, /** - * Convert an Array-like object to a real Array. - * - * @param {Array-like} list - * @param {Number} [start] - start index - * @return {Array} + * Custom user key aliases for v-on */ - - function toArray(list, start) { - start = start || 0; - var i = list.length - start; - var ret = new Array(i); - while (i--) { - ret[i] = list[i + start]; - } - return ret; - } + keyCodes: Object.create(null), /** - * Mix properties into target object. - * - * @param {Object} to - * @param {Object} from + * Check if a tag is reserved so that it cannot be registered as a + * component. This is platform-dependent and may be overwritten. */ - - function extend(to, from) { - var keys = Object.keys(from); - var i = keys.length; - while (i--) { - to[keys[i]] = from[keys[i]]; - } - return to; - } + isReservedTag: no, /** - * Quick object check - this is primarily used to tell - * Objects from primitive values when we know the value - * is a JSON-compliant type. - * - * @param {*} obj - * @return {Boolean} + * Check if a tag is an unknown element. + * Platform-dependent. */ - - function isObject(obj) { - return obj !== null && typeof obj === 'object'; - } + isUnknownElement: no, /** - * Strict object type check. Only returns true - * for plain JavaScript objects. - * - * @param {*} obj - * @return {Boolean} + * Get the namespace of an element */ - - var toString = Object.prototype.toString; - var OBJECT_STRING = '[object Object]'; - - function isPlainObject(obj) { - return toString.call(obj) === OBJECT_STRING; - } + getTagNamespace: noop, /** - * Array type check. - * - * @param {*} obj - * @return {Boolean} + * Check if an attribute must be bound using property, e.g. value + * Platform-dependent. */ - - var isArray = Array.isArray; + mustUseProp: no, /** - * Define a property. - * - * @param {Object} obj - * @param {String} key - * @param {*} val - * @param {Boolean} [enumerable] + * List of asset types that a component can own. */ - - function def(obj, key, val, enumerable) { - Object.defineProperty(obj, key, { - value: val, - enumerable: !!enumerable, - writable: true, - configurable: true - }); - } + _assetTypes: [ + 'component', + 'directive', + 'filter' + ], /** - * Debounce a function so it only gets called after the - * input stops arriving after the given wait period. - * - * @param {Function} func - * @param {Number} wait - * @return {Function} - the debounced function + * List of lifecycle hooks. */ - - function _debounce(func, wait) { - var timeout, args, context, timestamp, result; - var later = function later() { - var last = Date.now() - timestamp; - if (last < wait && last >= 0) { - timeout = setTimeout(later, wait - last); - } else { - timeout = null; - result = func.apply(context, args); - if (!timeout) context = args = null; - } - }; - return function () { - context = this; - args = arguments; - timestamp = Date.now(); - if (!timeout) { - timeout = setTimeout(later, wait); - } - return result; - }; - } + _lifecycleHooks: [ + 'beforeCreate', + 'created', + 'beforeMount', + 'mounted', + 'beforeUpdate', + 'updated', + 'beforeDestroy', + 'destroyed', + 'activated', + 'deactivated' + ], /** - * Manual indexOf because it's slightly faster than - * native. - * - * @param {Array} arr - * @param {*} obj + * Max circular updates allowed in a scheduler flush cycle. */ - - function indexOf(arr, obj) { - var i = arr.length; - while (i--) { - if (arr[i] === obj) return i; - } - return -1; - } + _maxUpdateCount: 100, /** - * Make a cancellable version of an async callback. - * - * @param {Function} fn - * @return {Function} + * Server rendering? */ + _isServer: "client" === 'server' +}; - function cancellable(fn) { - var cb = function cb() { - if (!cb.cancelled) { - return fn.apply(this, arguments); - } - }; - cb.cancel = function () { - cb.cancelled = true; - }; - return cb; - } +/* */ - /** - * Check if two values are loosely equal - that is, - * if they are plain objects, do they have the same shape? - * - * @param {*} a - * @param {*} b - * @return {Boolean} - */ +/** + * Check if a string starts with $ or _ + */ +function isReserved (str) { + var c = (str + '').charCodeAt(0); + return c === 0x24 || c === 0x5F +} - function looseEqual(a, b) { - /* eslint-disable eqeqeq */ - return a == b || (isObject(a) && isObject(b) ? JSON.stringify(a) === JSON.stringify(b) : false); - /* eslint-enable eqeqeq */ +/** + * Define a property. + */ +function def (obj, key, val, enumerable) { + Object.defineProperty(obj, key, { + value: val, + enumerable: !!enumerable, + writable: true, + configurable: true + }); +} + +/** + * Parse simple path. + */ +var bailRE = /[^\w\.\$]/; +function parsePath (path) { + if (bailRE.test(path)) { + return + } else { + var segments = path.split('.'); + return function (obj) { + for (var i = 0; i < segments.length; i++) { + if (!obj) { return } + obj = obj[segments[i]]; + } + return obj + } } +} - var hasProto = ('__proto__' in {}); +/* */ +/* globals MutationObserver */ - // Browser environment sniffing - var inBrowser = typeof window !== 'undefined' && Object.prototype.toString.call(window) !== '[object Object]'; +// can we use __proto__? +var hasProto = '__proto__' in {}; - // detect devtools - var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__; +// Browser environment sniffing +var inBrowser = + typeof window !== 'undefined' && + Object.prototype.toString.call(window) !== '[object Object]'; - // UA sniffing for working around browser-specific quirks - var UA = inBrowser && window.navigator.userAgent.toLowerCase(); - var isIE = UA && UA.indexOf('trident') > 0; - var isIE9 = UA && UA.indexOf('msie 9.0') > 0; - var isAndroid = UA && UA.indexOf('android') > 0; - var isIos = UA && /(iphone|ipad|ipod|ios)/i.test(UA); - var iosVersionMatch = isIos && UA.match(/os ([\d_]+)/); - var iosVersion = iosVersionMatch && iosVersionMatch[1].split('_'); +var UA = inBrowser && window.navigator.userAgent.toLowerCase(); +var isIE = UA && /msie|trident/.test(UA); +var isIE9 = UA && UA.indexOf('msie 9.0') > 0; +var isEdge = UA && UA.indexOf('edge/') > 0; +var isAndroid = UA && UA.indexOf('android') > 0; +var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA); - // detecting iOS UIWebView by indexedDB - var hasMutationObserverBug = iosVersion && Number(iosVersion[0]) >= 9 && Number(iosVersion[1]) >= 3 && !window.indexedDB; +// detect devtools +var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__; - var transitionProp = undefined; - var transitionEndEvent = undefined; - var animationProp = undefined; - var animationEndEvent = undefined; +/* istanbul ignore next */ +function isNative (Ctor) { + return /native code/.test(Ctor.toString()) +} - // Transition property/event sniffing - if (inBrowser && !isIE9) { - var isWebkitTrans = window.ontransitionend === undefined && window.onwebkittransitionend !== undefined; - var isWebkitAnim = window.onanimationend === undefined && window.onwebkitanimationend !== undefined; - transitionProp = isWebkitTrans ? 'WebkitTransition' : 'transition'; - transitionEndEvent = isWebkitTrans ? 'webkitTransitionEnd' : 'transitionend'; - animationProp = isWebkitAnim ? 'WebkitAnimation' : 'animation'; - animationEndEvent = isWebkitAnim ? 'webkitAnimationEnd' : 'animationend'; +/** + * Defer a task to execute it asynchronously. + */ +var nextTick = (function () { + var callbacks = []; + var pending = false; + var timerFunc; + + function nextTickHandler () { + pending = false; + var copies = callbacks.slice(0); + callbacks.length = 0; + for (var i = 0; i < copies.length; i++) { + copies[i](); + } + } + + // the nextTick behavior leverages the microtask queue, which can be accessed + // via either native Promise.then or MutationObserver. + // MutationObserver has wider support, however it is seriously bugged in + // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It + // completely stops working after triggering a few times... so, if native + // Promise is available, we will use it: + /* istanbul ignore if */ + if (typeof Promise !== 'undefined' && isNative(Promise)) { + var p = Promise.resolve(); + timerFunc = function () { + p.then(nextTickHandler); + // in problematic UIWebViews, Promise.then doesn't completely break, but + // it can get stuck in a weird state where callbacks are pushed into the + // microtask queue but the queue isn't being flushed, until the browser + // needs to do some other work, e.g. handle a timer. Therefore we can + // "force" the microtask queue to be flushed by adding an empty timer. + if (isIOS) { setTimeout(noop); } + }; + } else if (typeof MutationObserver !== 'undefined' && ( + isNative(MutationObserver) || + // PhantomJS and iOS 7.x + MutationObserver.toString() === '[object MutationObserverConstructor]' + )) { + // use MutationObserver where native Promise is not available, + // e.g. PhantomJS IE11, iOS7, Android 4.4 + var counter = 1; + var observer = new MutationObserver(nextTickHandler); + var textNode = document.createTextNode(String(counter)); + observer.observe(textNode, { + characterData: true + }); + timerFunc = function () { + counter = (counter + 1) % 2; + textNode.data = String(counter); + }; + } else { + // fallback to setTimeout + /* istanbul ignore next */ + timerFunc = function () { + setTimeout(nextTickHandler, 0); + }; } - /** - * Defer a task to execute it asynchronously. Ideally this - * should be executed as a microtask, so we leverage - * MutationObserver if it's available, and fallback to - * setTimeout(0). - * - * @param {Function} cb - * @param {Object} ctx - */ - - var nextTick = (function () { - var callbacks = []; - var pending = false; - var timerFunc; - function nextTickHandler() { - pending = false; - var copies = callbacks.slice(0); - callbacks = []; - for (var i = 0; i < copies.length; i++) { - copies[i](); - } - } - - /* istanbul ignore if */ - if (typeof MutationObserver !== 'undefined' && !hasMutationObserverBug) { - var counter = 1; - var observer = new MutationObserver(nextTickHandler); - var textNode = document.createTextNode(counter); - observer.observe(textNode, { - characterData: true - }); - timerFunc = function () { - counter = (counter + 1) % 2; - textNode.data = counter; - }; - } else { - // webpack attempts to inject a shim for setImmediate - // if it is used as a global, so we have to work around that to - // avoid bundling unnecessary code. - var context = inBrowser ? window : typeof global !== 'undefined' ? global : {}; - timerFunc = context.setImmediate || setTimeout; - } - return function (cb, ctx) { - var func = ctx ? function () { - cb.call(ctx); - } : cb; - callbacks.push(func); - if (pending) return; + return function queueNextTick (cb, ctx) { + var func = ctx + ? function () { cb.call(ctx); } + : cb; + callbacks.push(func); + if (!pending) { pending = true; - timerFunc(nextTickHandler, 0); - }; - })(); + timerFunc(); + } + } +})(); - var _Set = undefined; - /* istanbul ignore if */ - if (typeof Set !== 'undefined' && Set.toString().match(/native code/)) { - // use native Set when available. - _Set = Set; - } else { - // a non-standard Set polyfill that only works with primitive keys. - _Set = function () { +var _Set; +/* istanbul ignore if */ +if (typeof Set !== 'undefined' && isNative(Set)) { + // use native Set when available. + _Set = Set; +} else { + // a non-standard Set polyfill that only works with primitive keys. + _Set = (function () { + function Set () { this.set = Object.create(null); + } + Set.prototype.has = function has (key) { + return this.set[key] !== undefined }; - _Set.prototype.has = function (key) { - return this.set[key] !== undefined; - }; - _Set.prototype.add = function (key) { + Set.prototype.add = function add (key) { this.set[key] = 1; }; - _Set.prototype.clear = function () { + Set.prototype.clear = function clear () { this.set = Object.create(null); }; - } - - function Cache(limit) { - this.size = 0; - this.limit = limit; - this.head = this.tail = undefined; - this._keymap = Object.create(null); - } - - var p = Cache.prototype; - /** - * Put <value> into the cache associated with <key>. - * Returns the entry which was removed to make room for - * the new entry. Otherwise undefined is returned. - * (i.e. if there was enough room already). - * - * @param {String} key - * @param {*} value - * @return {Entry|undefined} - */ - - p.put = function (key, value) { - var removed; - - var entry = this.get(key, true); - if (!entry) { - if (this.size === this.limit) { - removed = this.shift(); - } - entry = { - key: key - }; - this._keymap[key] = entry; - if (this.tail) { - this.tail.newer = entry; - entry.older = this.tail; - } else { - this.head = entry; + return Set; + }()); +} + +/* not type checking this file because flow doesn't play well with Proxy */ + +var hasProxy; +var proxyHandlers; +var initProxy; + +{ + var allowedGlobals = makeMap( + 'Infinity,undefined,NaN,isFinite,isNaN,' + + 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' + + 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' + + 'require' // for Webpack/Browserify + ); + + hasProxy = + typeof Proxy !== 'undefined' && + Proxy.toString().match(/native code/); + + proxyHandlers = { + has: function has (target, key) { + var has = key in target; + var isAllowed = allowedGlobals(key) || key.charAt(0) === '_'; + if (!has && !isAllowed) { + warn( + "Property or method \"" + key + "\" is not defined on the instance but " + + "referenced during render. Make sure to declare reactive data " + + "properties in the data option.", + target + ); } - this.tail = entry; - this.size++; + return has || !isAllowed } - entry.value = value; - - return removed; }; - /** - * Purge the least recently used (oldest) entry from the - * cache. Returns the removed entry or undefined if the - * cache was empty. - */ - - p.shift = function () { - var entry = this.head; - if (entry) { - this.head = this.head.newer; - this.head.older = undefined; - entry.newer = entry.older = undefined; - this._keymap[entry.key] = undefined; - this.size--; + initProxy = function initProxy (vm) { + if (hasProxy) { + vm._renderProxy = new Proxy(vm, proxyHandlers); + } else { + vm._renderProxy = vm; } - return entry; }; +} - /** - * Get and register recent use of <key>. Returns the value - * associated with <key> or undefined if not in cache. - * - * @param {String} key - * @param {Boolean} returnEntry - * @return {Entry|*} - */ +/* */ - p.get = function (key, returnEntry) { - var entry = this._keymap[key]; - if (entry === undefined) return; - if (entry === this.tail) { - return returnEntry ? entry : entry.value; - } - // HEAD--------------TAIL - // <.older .newer> - // <--- add direction -- - // A B C <D> E - if (entry.newer) { - if (entry === this.head) { - this.head = entry.newer; - } - entry.newer.older = entry.older; // C <-- E. - } - if (entry.older) { - entry.older.newer = entry.newer; // C. --> E - } - entry.newer = undefined; // D --x - entry.older = this.tail; // D. --> E - if (this.tail) { - this.tail.newer = entry; // E. <-- D - } - this.tail = entry; - return returnEntry ? entry : entry.value; - }; - var cache$1 = new Cache(1000); - var filterTokenRE = /[^\s'"]+|'[^']*'|"[^"]*"/g; - var reservedArgRE = /^in$|^-?\d+/; +var uid$2 = 0; - /** - * Parser state - */ - - var str; - var dir; - var c; - var prev; - var i; - var l; - var lastFilterIndex; - var inSingle; - var inDouble; - var curly; - var square; - var paren; - /** - * Push a filter to the current directive object - */ +/** + * A dep is an observable that can have multiple + * directives subscribing to it. + */ +var Dep = function Dep () { + this.id = uid$2++; + this.subs = []; +}; - function pushFilter() { - var exp = str.slice(lastFilterIndex, i).trim(); - var filter; - if (exp) { - filter = {}; - var tokens = exp.match(filterTokenRE); - filter.name = tokens[0]; - if (tokens.length > 1) { - filter.args = tokens.slice(1).map(processFilterArg); - } - } - if (filter) { - (dir.filters = dir.filters || []).push(filter); - } - lastFilterIndex = i + 1; - } +Dep.prototype.addSub = function addSub (sub) { + this.subs.push(sub); +}; - /** - * Check if an argument is dynamic and strip quotes. - * - * @param {String} arg - * @return {Object} - */ +Dep.prototype.removeSub = function removeSub (sub) { + remove$1(this.subs, sub); +}; - function processFilterArg(arg) { - if (reservedArgRE.test(arg)) { - return { - value: toNumber(arg), - dynamic: false - }; - } else { - var stripped = stripQuotes(arg); - var dynamic = stripped === arg; - return { - value: dynamic ? arg : stripped, - dynamic: dynamic - }; - } +Dep.prototype.depend = function depend () { + if (Dep.target) { + Dep.target.addDep(this); } +}; - /** - * Parse a directive value and extract the expression - * and its filters into a descriptor. - * - * Example: - * - * "a + 1 | uppercase" will yield: - * { - * expression: 'a + 1', - * filters: [ - * { name: 'uppercase', args: null } - * ] - * } - * - * @param {String} s - * @return {Object} - */ +Dep.prototype.notify = function notify () { + // stablize the subscriber list first + var subs = this.subs.slice(); + for (var i = 0, l = subs.length; i < l; i++) { + subs[i].update(); + } +}; - function parseDirective(s) { - var hit = cache$1.get(s); - if (hit) { - return hit; - } - - // reset parser state - str = s; - inSingle = inDouble = false; - curly = square = paren = 0; - lastFilterIndex = 0; - dir = {}; - - for (i = 0, l = str.length; i < l; i++) { - prev = c; - c = str.charCodeAt(i); - if (inSingle) { - // check single quote - if (c === 0x27 && prev !== 0x5C) inSingle = !inSingle; - } else if (inDouble) { - // check double quote - if (c === 0x22 && prev !== 0x5C) inDouble = !inDouble; - } else if (c === 0x7C && // pipe - str.charCodeAt(i + 1) !== 0x7C && str.charCodeAt(i - 1) !== 0x7C) { - if (dir.expression == null) { - // first filter, end of expression - lastFilterIndex = i + 1; - dir.expression = str.slice(0, i).trim(); - } else { - // already has filter - pushFilter(); - } - } else { - switch (c) { - case 0x22: - inDouble = true;break; // " - case 0x27: - inSingle = true;break; // ' - case 0x28: - paren++;break; // ( - case 0x29: - paren--;break; // ) - case 0x5B: - square++;break; // [ - case 0x5D: - square--;break; // ] - case 0x7B: - curly++;break; // { - case 0x7D: - curly--;break; // } - } - } - } +// the current target watcher being evaluated. +// this is globally unique because there could be only one +// watcher being evaluated at any time. +Dep.target = null; +var targetStack = []; - if (dir.expression == null) { - dir.expression = str.slice(0, i).trim(); - } else if (lastFilterIndex !== 0) { - pushFilter(); - } +function pushTarget (_target) { + if (Dep.target) { targetStack.push(Dep.target); } + Dep.target = _target; +} - cache$1.put(s, dir); - return dir; - } +function popTarget () { + Dep.target = targetStack.pop(); +} -var directive = Object.freeze({ - parseDirective: parseDirective - }); +/* */ - var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g; - var cache = undefined; - var tagRE = undefined; - var htmlRE = undefined; - /** - * Escape a string so it can be used in a RegExp - * constructor. - * - * @param {String} str - */ - function escapeRegex(str) { - return str.replace(regexEscapeRE, '\\$&'); - } +var queue = []; +var has$1 = {}; +var circular = {}; +var waiting = false; +var flushing = false; +var index = 0; - function compileRegex() { - var open = escapeRegex(config.delimiters[0]); - var close = escapeRegex(config.delimiters[1]); - var unsafeOpen = escapeRegex(config.unsafeDelimiters[0]); - var unsafeClose = escapeRegex(config.unsafeDelimiters[1]); - tagRE = new RegExp(unsafeOpen + '((?:.|\\n)+?)' + unsafeClose + '|' + open + '((?:.|\\n)+?)' + close, 'g'); - htmlRE = new RegExp('^' + unsafeOpen + '((?:.|\\n)+?)' + unsafeClose + '$'); - // reset cache - cache = new Cache(1000); +/** + * Reset the scheduler's state. + */ +function resetSchedulerState () { + queue.length = 0; + has$1 = {}; + { + circular = {}; } + waiting = flushing = false; +} - /** - * Parse a template text string into an array of tokens. - * - * @param {String} text - * @return {Array<Object> | null} - * - {String} type - * - {String} value - * - {Boolean} [html] - * - {Boolean} [oneTime] - */ - - function parseText(text) { - if (!cache) { - compileRegex(); - } - var hit = cache.get(text); - if (hit) { - return hit; - } - if (!tagRE.test(text)) { - return null; - } - var tokens = []; - var lastIndex = tagRE.lastIndex = 0; - var match, index, html, value, first, oneTime; - /* eslint-disable no-cond-assign */ - while (match = tagRE.exec(text)) { - /* eslint-enable no-cond-assign */ - index = match.index; - // push text token - if (index > lastIndex) { - tokens.push({ - value: text.slice(lastIndex, index) - }); +/** + * Flush both queues and run the watchers. + */ +function flushSchedulerQueue () { + flushing = true; + + // Sort queue before flush. + // This ensures that: + // 1. Components are updated from parent to child. (because parent is always + // created before the child) + // 2. A component's user watchers are run before its render watcher (because + // user watchers are created before the render watcher) + // 3. If a component is destroyed during a parent component's watcher run, + // its watchers can be skipped. + queue.sort(function (a, b) { return a.id - b.id; }); + + // do not cache length because more watchers might be pushed + // as we run existing watchers + for (index = 0; index < queue.length; index++) { + var watcher = queue[index]; + var id = watcher.id; + has$1[id] = null; + watcher.run(); + // in dev build, check and stop circular updates. + if ("development" !== 'production' && has$1[id] != null) { + circular[id] = (circular[id] || 0) + 1; + if (circular[id] > config._maxUpdateCount) { + warn( + 'You may have an infinite update loop ' + ( + watcher.user + ? ("in watcher with expression \"" + (watcher.expression) + "\"") + : "in a component render function." + ), + watcher.vm + ); + break } - // tag token - html = htmlRE.test(match[0]); - value = html ? match[1] : match[2]; - first = value.charCodeAt(0); - oneTime = first === 42; // * - value = oneTime ? value.slice(1) : value; - tokens.push({ - tag: true, - value: value.trim(), - html: html, - oneTime: oneTime - }); - lastIndex = index + match[0].length; - } - if (lastIndex < text.length) { - tokens.push({ - value: text.slice(lastIndex) - }); - } - cache.put(text, tokens); - return tokens; - } - - /** - * Format a list of tokens into an expression. - * e.g. tokens parsed from 'a {{b}} c' can be serialized - * into one single expression as '"a " + b + " c"'. - * - * @param {Array} tokens - * @param {Vue} [vm] - * @return {String} - */ - - function tokensToExp(tokens, vm) { - if (tokens.length > 1) { - return tokens.map(function (token) { - return formatToken(token, vm); - }).join('+'); - } else { - return formatToken(tokens[0], vm, true); } } - /** - * Format a single token. - * - * @param {Object} token - * @param {Vue} [vm] - * @param {Boolean} [single] - * @return {String} - */ - - function formatToken(token, vm, single) { - return token.tag ? token.oneTime && vm ? '"' + vm.$eval(token.value) + '"' : inlineFilters(token.value, single) : '"' + token.value + '"'; + // devtool hook + /* istanbul ignore if */ + if (devtools && config.devtools) { + devtools.emit('flush'); } - /** - * For an attribute with multiple interpolation tags, - * e.g. attr="some-{{thing | filter}}", in order to combine - * the whole thing into a single watchable expression, we - * have to inline those filters. This function does exactly - * that. This is a bit hacky but it avoids heavy changes - * to directive parser and watcher mechanism. - * - * @param {String} exp - * @param {Boolean} single - * @return {String} - */ + resetSchedulerState(); +} - var filterRE = /[^|]\|[^|]/; - function inlineFilters(exp, single) { - if (!filterRE.test(exp)) { - return single ? exp : '(' + exp + ')'; +/** + * Push a watcher into the watcher queue. + * Jobs with duplicate IDs will be skipped unless it's + * pushed when the queue is being flushed. + */ +function queueWatcher (watcher) { + var id = watcher.id; + if (has$1[id] == null) { + has$1[id] = true; + if (!flushing) { + queue.push(watcher); } else { - var dir = parseDirective(exp); - if (!dir.filters) { - return '(' + exp + ')'; - } else { - return 'this._applyFilters(' + dir.expression + // value - ',null,' + // oldValue (null for read) - JSON.stringify(dir.filters) + // filter descriptors - ',false)'; // write? + // if already flushing, splice the watcher based on its id + // if already past its id, it will be run next immediately. + var i = queue.length - 1; + while (i >= 0 && queue[i].id > watcher.id) { + i--; } + queue.splice(Math.max(i, index) + 1, 0, watcher); } - } - -var text = Object.freeze({ - compileRegex: compileRegex, - parseText: parseText, - tokensToExp: tokensToExp - }); - - var delimiters = ['{{', '}}']; - var unsafeDelimiters = ['{{{', '}}}']; - - var config = Object.defineProperties({ - - /** - * Whether to print debug messages. - * Also enables stack trace for warnings. - * - * @type {Boolean} - */ - - debug: false, - - /** - * Whether to suppress warnings. - * - * @type {Boolean} - */ - - silent: false, - - /** - * Whether to use async rendering. - */ - - async: true, - - /** - * Whether to warn against errors caught when evaluating - * expressions. - */ - - warnExpressionErrors: true, - - /** - * Whether to allow devtools inspection. - * Disabled by default in production builds. - */ - - devtools: 'development' !== 'production', - - /** - * Internal flag to indicate the delimiters have been - * changed. - * - * @type {Boolean} - */ - - _delimitersChanged: true, - - /** - * List of asset types that a component can own. - * - * @type {Array} - */ - - _assetTypes: ['component', 'directive', 'elementDirective', 'filter', 'transition', 'partial'], - - /** - * prop binding modes - */ - - _propBindingModes: { - ONE_WAY: 0, - TWO_WAY: 1, - ONE_TIME: 2 - }, - - /** - * Max circular updates allowed in a batcher flush cycle. - */ - - _maxUpdateCount: 100 - - }, { - delimiters: { /** - * Interpolation delimiters. Changing these would trigger - * the text parser to re-compile the regular expressions. - * - * @type {Array<String>} - */ - - get: function get() { - return delimiters; - }, - set: function set(val) { - delimiters = val; - compileRegex(); - }, - configurable: true, - enumerable: true - }, - unsafeDelimiters: { - get: function get() { - return unsafeDelimiters; - }, - set: function set(val) { - unsafeDelimiters = val; - compileRegex(); - }, - configurable: true, - enumerable: true + // queue the flush + if (!waiting) { + waiting = true; + nextTick(flushSchedulerQueue); } - }); - - var warn = undefined; - var formatComponentName = undefined; - - if ('development' !== 'production') { - (function () { - var hasConsole = typeof console !== 'undefined'; - - warn = function (msg, vm) { - if (hasConsole && !config.silent) { - console.error('[Vue warn]: ' + msg + (vm ? formatComponentName(vm) : '')); - } - }; - - formatComponentName = function (vm) { - var name = vm._isVue ? vm.$options.name : vm.name; - return name ? ' (found in component: <' + hyphenate(name) + '>)' : ''; - }; - })(); } +} - /** - * Append with transition. - * - * @param {Element} el - * @param {Element} target - * @param {Vue} vm - * @param {Function} [cb] - */ - - function appendWithTransition(el, target, vm, cb) { - applyTransition(el, 1, function () { - target.appendChild(el); - }, vm, cb); - } +/* */ - /** - * InsertBefore with transition. - * - * @param {Element} el - * @param {Element} target - * @param {Vue} vm - * @param {Function} [cb] - */ +var uid$1 = 0; - function beforeWithTransition(el, target, vm, cb) { - applyTransition(el, 1, function () { - before(el, target); - }, vm, cb); +/** + * A watcher parses an expression, collects dependencies, + * and fires callback when the expression value changes. + * This is used for both the $watch() api and directives. + */ +var Watcher = function Watcher ( + vm, + expOrFn, + cb, + options +) { + if ( options === void 0 ) options = {}; + + this.vm = vm; + vm._watchers.push(this); + // options + this.deep = !!options.deep; + this.user = !!options.user; + this.lazy = !!options.lazy; + this.sync = !!options.sync; + this.expression = expOrFn.toString(); + this.cb = cb; + this.id = ++uid$1; // uid for batching + this.active = true; + this.dirty = this.lazy; // for lazy watchers + this.deps = []; + this.newDeps = []; + this.depIds = new _Set(); + this.newDepIds = new _Set(); + // parse expression for getter + if (typeof expOrFn === 'function') { + this.getter = expOrFn; + } else { + this.getter = parsePath(expOrFn); + if (!this.getter) { + this.getter = function () {}; + "development" !== 'production' && warn( + "Failed watching path: \"" + expOrFn + "\" " + + 'Watcher only accepts simple dot-delimited paths. ' + + 'For full control, use a function instead.', + vm + ); + } + } + this.value = this.lazy + ? undefined + : this.get(); +}; + +/** + * Evaluate the getter, and re-collect dependencies. + */ +Watcher.prototype.get = function get () { + pushTarget(this); + var value = this.getter.call(this.vm, this.vm); + // "touch" every property so they are all tracked as + // dependencies for deep watching + if (this.deep) { + traverse(value); + } + popTarget(); + this.cleanupDeps(); + return value +}; + +/** + * Add a dependency to this directive. + */ +Watcher.prototype.addDep = function addDep (dep) { + var id = dep.id; + if (!this.newDepIds.has(id)) { + this.newDepIds.add(id); + this.newDeps.push(dep); + if (!this.depIds.has(id)) { + dep.addSub(this); + } } +}; - /** - * Remove with transition. - * - * @param {Element} el - * @param {Vue} vm - * @param {Function} [cb] - */ - - function removeWithTransition(el, vm, cb) { - applyTransition(el, -1, function () { - remove(el); - }, vm, cb); +/** + * Clean up for dependency collection. + */ +Watcher.prototype.cleanupDeps = function cleanupDeps () { + var this$1 = this; + + var i = this.deps.length; + while (i--) { + var dep = this$1.deps[i]; + if (!this$1.newDepIds.has(dep.id)) { + dep.removeSub(this$1); + } + } + var tmp = this.depIds; + this.depIds = this.newDepIds; + this.newDepIds = tmp; + this.newDepIds.clear(); + tmp = this.deps; + this.deps = this.newDeps; + this.newDeps = tmp; + this.newDeps.length = 0; +}; + +/** + * Subscriber interface. + * Will be called when a dependency changes. + */ +Watcher.prototype.update = function update () { + /* istanbul ignore else */ + if (this.lazy) { + this.dirty = true; + } else if (this.sync) { + this.run(); + } else { + queueWatcher(this); } +}; - /** - * Apply transitions with an operation callback. - * - * @param {Element} el - * @param {Number} direction - * 1: enter - * -1: leave - * @param {Function} op - the actual DOM operation - * @param {Vue} vm - * @param {Function} [cb] - */ - - function applyTransition(el, direction, op, vm, cb) { - var transition = el.__v_trans; - if (!transition || - // skip if there are no js hooks and CSS transition is - // not supported - !transition.hooks && !transitionEndEvent || - // skip transitions for initial compile - !vm._isCompiled || - // if the vm is being manipulated by a parent directive - // during the parent's compilation phase, skip the - // animation. - vm.$parent && !vm.$parent._isCompiled) { - op(); - if (cb) cb(); - return; - } - var action = direction > 0 ? 'enter' : 'leave'; - transition[action](op, cb); - } - -var transition = Object.freeze({ - appendWithTransition: appendWithTransition, - beforeWithTransition: beforeWithTransition, - removeWithTransition: removeWithTransition, - applyTransition: applyTransition - }); - - /** - * Query an element selector if it's not an element already. - * - * @param {String|Element} el - * @return {Element} - */ - - function query(el) { - if (typeof el === 'string') { - var selector = el; - el = document.querySelector(el); - if (!el) { - 'development' !== 'production' && warn('Cannot find element: ' + selector); +/** + * Scheduler job interface. + * Will be called by the scheduler. + */ +Watcher.prototype.run = function run () { + if (this.active) { + var value = this.get(); + if ( + value !== this.value || + // Deep watchers and watchers on Object/Arrays should fire even + // when the value is the same, because the value may + // have mutated. + isObject(value) || + this.deep + ) { + // set new value + var oldValue = this.value; + this.value = value; + if (this.user) { + try { + this.cb.call(this.vm, value, oldValue); + } catch (e) { + "development" !== 'production' && warn( + ("Error in watcher \"" + (this.expression) + "\""), + this.vm + ); + /* istanbul ignore else */ + if (config.errorHandler) { + config.errorHandler.call(null, e, this.vm); + } else { + throw e + } + } + } else { + this.cb.call(this.vm, value, oldValue); } } - return el; } +}; - /** - * Check if a node is in the document. - * Note: document.documentElement.contains should work here - * but always returns false for comment nodes in phantomjs, - * making unit tests difficult. This is fixed by doing the - * contains() check on the node's parentNode instead of - * the node itself. - * - * @param {Node} node - * @return {Boolean} - */ - - function inDoc(node) { - if (!node) return false; - var doc = node.ownerDocument.documentElement; - var parent = node.parentNode; - return doc === node || doc === parent || !!(parent && parent.nodeType === 1 && doc.contains(parent)); - } +/** + * Evaluate the value of the watcher. + * This only gets called for lazy watchers. + */ +Watcher.prototype.evaluate = function evaluate () { + this.value = this.get(); + this.dirty = false; +}; - /** - * Get and remove an attribute from a node. - * - * @param {Node} node - * @param {String} _attr - */ +/** + * Depend on all deps collected by this watcher. + */ +Watcher.prototype.depend = function depend () { + var this$1 = this; - function getAttr(node, _attr) { - var val = node.getAttribute(_attr); - if (val !== null) { - node.removeAttribute(_attr); - } - return val; + var i = this.deps.length; + while (i--) { + this$1.deps[i].depend(); } +}; - /** - * Get an attribute with colon or v-bind: prefix. - * - * @param {Node} node - * @param {String} name - * @return {String|null} - */ +/** + * Remove self from all dependencies' subcriber list. + */ +Watcher.prototype.teardown = function teardown () { + var this$1 = this; - function getBindAttr(node, name) { - var val = getAttr(node, ':' + name); - if (val === null) { - val = getAttr(node, 'v-bind:' + name); + if (this.active) { + // remove self from vm's watcher list + // this is a somewhat expensive operation so we skip it + // if the vm is being destroyed or is performing a v-for + // re-render (the watcher list is then filtered by v-for). + if (!this.vm._isBeingDestroyed && !this.vm._vForRemoving) { + remove$1(this.vm._watchers, this); } - return val; - } - - /** - * Check the presence of a bind attribute. - * - * @param {Node} node - * @param {String} name - * @return {Boolean} - */ - - function hasBindAttr(node, name) { - return node.hasAttribute(name) || node.hasAttribute(':' + name) || node.hasAttribute('v-bind:' + name); - } - - /** - * Insert el before target - * - * @param {Element} el - * @param {Element} target - */ - - function before(el, target) { - target.parentNode.insertBefore(el, target); - } - - /** - * Insert el after target - * - * @param {Element} el - * @param {Element} target - */ - - function after(el, target) { - if (target.nextSibling) { - before(el, target.nextSibling); - } else { - target.parentNode.appendChild(el); + var i = this.deps.length; + while (i--) { + this$1.deps[i].removeSub(this$1); } + this.active = false; } +}; - /** - * Remove el from DOM - * - * @param {Element} el - */ - - function remove(el) { - el.parentNode.removeChild(el); - } - - /** - * Prepend el to target - * - * @param {Element} el - * @param {Element} target - */ - - function prepend(el, target) { - if (target.firstChild) { - before(el, target.firstChild); - } else { - target.appendChild(el); +/** + * Recursively traverse an object to evoke all converted + * getters, so that every nested property inside the object + * is collected as a "deep" dependency. + */ +var seenObjects = new _Set(); +function traverse (val, seen) { + var i, keys; + if (!seen) { + seen = seenObjects; + seen.clear(); + } + var isA = Array.isArray(val); + var isO = isObject(val); + if ((isA || isO) && Object.isExtensible(val)) { + if (val.__ob__) { + var depId = val.__ob__.dep.id; + if (seen.has(depId)) { + return + } else { + seen.add(depId); + } } - } - - /** - * Replace target with el - * - * @param {Element} target - * @param {Element} el - */ - - function replace(target, el) { - var parent = target.parentNode; - if (parent) { - parent.replaceChild(el, target); + if (isA) { + i = val.length; + while (i--) { traverse(val[i], seen); } + } else if (isO) { + keys = Object.keys(val); + i = keys.length; + while (i--) { traverse(val[keys[i]], seen); } } } +} - /** - * Add event listener shorthand. - * - * @param {Element} el - * @param {String} event - * @param {Function} cb - * @param {Boolean} [useCapture] - */ +/* + * not type checking this file because flow doesn't play well with + * dynamically accessing methods on Array prototype + */ - function on(el, event, cb, useCapture) { - el.addEventListener(event, cb, useCapture); - } +var arrayProto = Array.prototype; +var arrayMethods = Object.create(arrayProto);[ + 'push', + 'pop', + 'shift', + 'unshift', + 'splice', + 'sort', + 'reverse' +] +.forEach(function (method) { + // cache original method + var original = arrayProto[method]; + def(arrayMethods, method, function mutator () { + var arguments$1 = arguments; + + // avoid leaking arguments: + // http://jsperf.com/closure-with-arguments + var i = arguments.length; + var args = new Array(i); + while (i--) { + args[i] = arguments$1[i]; + } + var result = original.apply(this, args); + var ob = this.__ob__; + var inserted; + switch (method) { + case 'push': + inserted = args; + break + case 'unshift': + inserted = args; + break + case 'splice': + inserted = args.slice(2); + break + } + if (inserted) { ob.observeArray(inserted); } + // notify change + ob.dep.notify(); + return result + }); +}); - /** - * Remove event listener shorthand. - * - * @param {Element} el - * @param {String} event - * @param {Function} cb - */ +/* */ + +var arrayKeys = Object.getOwnPropertyNames(arrayMethods); - function off(el, event, cb) { - el.removeEventListener(event, cb); +/** + * By default, when a reactive property is set, the new value is + * also converted to become reactive. However when passing down props, + * we don't want to force conversion because the value may be a nested value + * under a frozen data structure. Converting it would defeat the optimization. + */ +var observerState = { + shouldConvert: true, + isSettingProps: false +}; + +/** + * Observer class that are attached to each observed + * object. Once attached, the observer converts target + * object's property keys into getter/setters that + * collect dependencies and dispatches updates. + */ +var Observer = function Observer (value) { + this.value = value; + this.dep = new Dep(); + this.vmCount = 0; + def(value, '__ob__', this); + if (Array.isArray(value)) { + var augment = hasProto + ? protoAugment + : copyAugment; + augment(value, arrayMethods, arrayKeys); + this.observeArray(value); + } else { + this.walk(value); } +}; - /** - * For IE9 compat: when both class and :class are present - * getAttribute('class') returns wrong value... - * - * @param {Element} el - * @return {String} - */ +/** + * Walk through each property and convert them into + * getter/setters. This method should only be called when + * value type is Object. + */ +Observer.prototype.walk = function walk (obj) { + var keys = Object.keys(obj); + for (var i = 0; i < keys.length; i++) { + defineReactive$$1(obj, keys[i], obj[keys[i]]); + } +}; - function getClass(el) { - var classname = el.className; - if (typeof classname === 'object') { - classname = classname.baseVal || ''; - } - return classname; +/** + * Observe a list of Array items. + */ +Observer.prototype.observeArray = function observeArray (items) { + for (var i = 0, l = items.length; i < l; i++) { + observe(items[i]); } +}; - /** - * In IE9, setAttribute('class') will result in empty class - * if the element also has the :class attribute; However in - * PhantomJS, setting `className` does not work on SVG elements... - * So we have to do a conditional check here. - * - * @param {Element} el - * @param {String} cls - */ +// helpers - function setClass(el, cls) { - /* istanbul ignore if */ - if (isIE9 && !/svg$/.test(el.namespaceURI)) { - el.className = cls; - } else { - el.setAttribute('class', cls); - } +/** + * Augment an target Object or Array by intercepting + * the prototype chain using __proto__ + */ +function protoAugment (target, src) { + /* eslint-disable no-proto */ + target.__proto__ = src; + /* eslint-enable no-proto */ +} + +/** + * Augment an target Object or Array by defining + * hidden properties. + * + * istanbul ignore next + */ +function copyAugment (target, src, keys) { + for (var i = 0, l = keys.length; i < l; i++) { + var key = keys[i]; + def(target, key, src[key]); } +} - /** - * Add class with compatibility for IE & SVG - * - * @param {Element} el - * @param {String} cls - */ - - function addClass(el, cls) { - if (el.classList) { - el.classList.add(cls); - } else { - var cur = ' ' + getClass(el) + ' '; - if (cur.indexOf(' ' + cls + ' ') < 0) { - setClass(el, (cur + cls).trim()); +/** + * Attempt to create an observer instance for a value, + * returns the new observer if successfully observed, + * or the existing observer if the value already has one. + */ +function observe (value) { + if (!isObject(value)) { + return + } + var ob; + if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) { + ob = value.__ob__; + } else if ( + observerState.shouldConvert && + !config._isServer && + (Array.isArray(value) || isPlainObject(value)) && + Object.isExtensible(value) && + !value._isVue + ) { + ob = new Observer(value); + } + return ob +} + +/** + * Define a reactive property on an Object. + */ +function defineReactive$$1 ( + obj, + key, + val, + customSetter +) { + var dep = new Dep(); + + var property = Object.getOwnPropertyDescriptor(obj, key); + if (property && property.configurable === false) { + return + } + + // cater for pre-defined getter/setters + var getter = property && property.get; + var setter = property && property.set; + + var childOb = observe(val); + Object.defineProperty(obj, key, { + enumerable: true, + configurable: true, + get: function reactiveGetter () { + var value = getter ? getter.call(obj) : val; + if (Dep.target) { + dep.depend(); + if (childOb) { + childOb.dep.depend(); + } + if (Array.isArray(value)) { + dependArray(value); + } + } + return value + }, + set: function reactiveSetter (newVal) { + var value = getter ? getter.call(obj) : val; + if (newVal === value) { + return + } + if ("development" !== 'production' && customSetter) { + customSetter(); + } + if (setter) { + setter.call(obj, newVal); + } else { + val = newVal; } + childOb = observe(newVal); + dep.notify(); } - } + }); +} - /** - * Remove class with compatibility for IE & SVG - * - * @param {Element} el - * @param {String} cls - */ +/** + * Set a property on an object. Adds the new property and + * triggers change notification if the property doesn't + * already exist. + */ +function set (obj, key, val) { + if (Array.isArray(obj)) { + obj.splice(key, 1, val); + return val + } + if (hasOwn(obj, key)) { + obj[key] = val; + return + } + var ob = obj.__ob__; + if (obj._isVue || (ob && ob.vmCount)) { + "development" !== 'production' && warn( + 'Avoid adding reactive properties to a Vue instance or its root $data ' + + 'at runtime - declare it upfront in the data option.' + ); + return + } + if (!ob) { + obj[key] = val; + return + } + defineReactive$$1(ob.value, key, val); + ob.dep.notify(); + return val +} + +/** + * Delete a property and trigger change if necessary. + */ +function del (obj, key) { + var ob = obj.__ob__; + if (obj._isVue || (ob && ob.vmCount)) { + "development" !== 'production' && warn( + 'Avoid deleting properties on a Vue instance or its root $data ' + + '- just set it to null.' + ); + return + } + if (!hasOwn(obj, key)) { + return + } + delete obj[key]; + if (!ob) { + return + } + ob.dep.notify(); +} + +/** + * Collect dependencies on array elements when the array is touched, since + * we cannot intercept array element access like property getters. + */ +function dependArray (value) { + for (var e = void 0, i = 0, l = value.length; i < l; i++) { + e = value[i]; + e && e.__ob__ && e.__ob__.dep.depend(); + if (Array.isArray(e)) { + dependArray(e); + } + } +} + +/* */ + +function initState (vm) { + vm._watchers = []; + initProps(vm); + initData(vm); + initComputed(vm); + initMethods(vm); + initWatch(vm); +} + +function initProps (vm) { + var props = vm.$options.props; + if (props) { + var propsData = vm.$options.propsData || {}; + var keys = vm.$options._propKeys = Object.keys(props); + var isRoot = !vm.$parent; + // root instance props should be converted + observerState.shouldConvert = isRoot; + var loop = function ( i ) { + var key = keys[i]; + /* istanbul ignore else */ + { + defineReactive$$1(vm, key, validateProp(key, props, propsData, vm), function () { + if (vm.$parent && !observerState.isSettingProps) { + warn( + "Avoid mutating a prop directly since the value will be " + + "overwritten whenever the parent component re-renders. " + + "Instead, use a data or computed property based on the prop's " + + "value. Prop being mutated: \"" + key + "\"", + vm + ); + } + }); + } + }; - function removeClass(el, cls) { - if (el.classList) { - el.classList.remove(cls); + for (var i = 0; i < keys.length; i++) loop( i ); + observerState.shouldConvert = true; + } +} + +function initData (vm) { + var data = vm.$options.data; + data = vm._data = typeof data === 'function' + ? data.call(vm) + : data || {}; + if (!isPlainObject(data)) { + data = {}; + "development" !== 'production' && warn( + 'data functions should return an object.', + vm + ); + } + // proxy data on instance + var keys = Object.keys(data); + var props = vm.$options.props; + var i = keys.length; + while (i--) { + if (props && hasOwn(props, keys[i])) { + "development" !== 'production' && warn( + "The data property \"" + (keys[i]) + "\" is already declared as a prop. " + + "Use prop default value instead.", + vm + ); } else { - var cur = ' ' + getClass(el) + ' '; - var tar = ' ' + cls + ' '; - while (cur.indexOf(tar) >= 0) { - cur = cur.replace(tar, ' '); + proxy(vm, keys[i]); + } + } + // observe data + observe(data); + data.__ob__ && data.__ob__.vmCount++; +} + +var computedSharedDefinition = { + enumerable: true, + configurable: true, + get: noop, + set: noop +}; + +function initComputed (vm) { + var computed = vm.$options.computed; + if (computed) { + for (var key in computed) { + var userDef = computed[key]; + if (typeof userDef === 'function') { + computedSharedDefinition.get = makeComputedGetter(userDef, vm); + computedSharedDefinition.set = noop; + } else { + computedSharedDefinition.get = userDef.get + ? userDef.cache !== false + ? makeComputedGetter(userDef.get, vm) + : bind$1(userDef.get, vm) + : noop; + computedSharedDefinition.set = userDef.set + ? bind$1(userDef.set, vm) + : noop; } - setClass(el, cur.trim()); - } - if (!el.className) { - el.removeAttribute('class'); + Object.defineProperty(vm, key, computedSharedDefinition); } } +} - /** - * Extract raw content inside an element into a temporary - * container div - * - * @param {Element} el - * @param {Boolean} asFragment - * @return {Element|DocumentFragment} - */ - - function extractContent(el, asFragment) { - var child; - var rawContent; - /* istanbul ignore if */ - if (isTemplate(el) && isFragment(el.content)) { - el = el.content; - } - if (el.hasChildNodes()) { - trimNode(el); - rawContent = asFragment ? document.createDocumentFragment() : document.createElement('div'); - /* eslint-disable no-cond-assign */ - while (child = el.firstChild) { - /* eslint-enable no-cond-assign */ - rawContent.appendChild(child); +function makeComputedGetter (getter, owner) { + var watcher = new Watcher(owner, getter, noop, { + lazy: true + }); + return function computedGetter () { + if (watcher.dirty) { + watcher.evaluate(); + } + if (Dep.target) { + watcher.depend(); + } + return watcher.value + } +} + +function initMethods (vm) { + var methods = vm.$options.methods; + if (methods) { + for (var key in methods) { + vm[key] = methods[key] == null ? noop : bind$1(methods[key], vm); + if ("development" !== 'production' && methods[key] == null) { + warn( + "method \"" + key + "\" has an undefined value in the component definition. " + + "Did you reference the function correctly?", + vm + ); } } - return rawContent; } +} - /** - * Trim possible empty head/tail text and comment - * nodes inside a parent. - * - * @param {Node} node - */ - - function trimNode(node) { - var child; - /* eslint-disable no-sequences */ - while ((child = node.firstChild, isTrimmable(child))) { - node.removeChild(child); - } - while ((child = node.lastChild, isTrimmable(child))) { - node.removeChild(child); +function initWatch (vm) { + var watch = vm.$options.watch; + if (watch) { + for (var key in watch) { + var handler = watch[key]; + if (Array.isArray(handler)) { + for (var i = 0; i < handler.length; i++) { + createWatcher(vm, key, handler[i]); + } + } else { + createWatcher(vm, key, handler); + } } - /* eslint-enable no-sequences */ } +} - function isTrimmable(node) { - return node && (node.nodeType === 3 && !node.data.trim() || node.nodeType === 8); +function createWatcher (vm, key, handler) { + var options; + if (isPlainObject(handler)) { + options = handler; + handler = handler.handler; } - - /** - * Check if an element is a template tag. - * Note if the template appears inside an SVG its tagName - * will be in lowercase. - * - * @param {Element} el - */ - - function isTemplate(el) { - return el.tagName && el.tagName.toLowerCase() === 'template'; + if (typeof handler === 'string') { + handler = vm[handler]; } + vm.$watch(key, handler, options); +} - /** - * Create an "anchor" for performing dom insertion/removals. - * This is used in a number of scenarios: - * - fragment instance - * - v-html - * - v-if - * - v-for - * - component - * - * @param {String} content - * @param {Boolean} persist - IE trashes empty textNodes on - * cloneNode(true), so in certain - * cases the anchor needs to be - * non-empty to be persisted in - * templates. - * @return {Comment|Text} - */ - - function createAnchor(content, persist) { - var anchor = config.debug ? document.createComment(content) : document.createTextNode(persist ? ' ' : ''); - anchor.__v_anchor = true; - return anchor; +function stateMixin (Vue) { + // flow somehow has problems with directly declared definition object + // when using Object.defineProperty, so we have to procedurally build up + // the object here. + var dataDef = {}; + dataDef.get = function () { + return this._data + }; + { + dataDef.set = function (newData) { + warn( + 'Avoid replacing instance root $data. ' + + 'Use nested data properties instead.', + this + ); + }; } + Object.defineProperty(Vue.prototype, '$data', dataDef); - /** - * Find a component ref attribute that starts with $. - * - * @param {Element} node - * @return {String|undefined} - */ - - var refRE = /^v-ref:/; + Vue.prototype.$set = set; + Vue.prototype.$delete = del; - function findRef(node) { - if (node.hasAttributes()) { - var attrs = node.attributes; - for (var i = 0, l = attrs.length; i < l; i++) { - var name = attrs[i].name; - if (refRE.test(name)) { - return camelize(name.replace(refRE, '')); - } - } + Vue.prototype.$watch = function ( + expOrFn, + cb, + options + ) { + var vm = this; + options = options || {}; + options.user = true; + var watcher = new Watcher(vm, expOrFn, cb, options); + if (options.immediate) { + cb.call(vm, watcher.value); } - } - - /** - * Map a function to a range of nodes . - * - * @param {Node} node - * @param {Node} end - * @param {Function} op - */ - - function mapNodeRange(node, end, op) { - var next; - while (node !== end) { - next = node.nextSibling; - op(node); - node = next; + return function unwatchFn () { + watcher.teardown(); } - op(end); - } - - /** - * Remove a range of nodes with transition, store - * the nodes in a fragment with correct ordering, - * and call callback when done. - * - * @param {Node} start - * @param {Node} end - * @param {Vue} vm - * @param {DocumentFragment} frag - * @param {Function} cb - */ + }; +} - function removeNodeRange(start, end, vm, frag, cb) { - var done = false; - var removed = 0; - var nodes = []; - mapNodeRange(start, end, function (node) { - if (node === end) done = true; - nodes.push(node); - removeWithTransition(node, vm, onRemoved); - }); - function onRemoved() { - removed++; - if (done && removed >= nodes.length) { - for (var i = 0; i < nodes.length; i++) { - frag.appendChild(nodes[i]); - } - cb && cb(); +function proxy (vm, key) { + if (!isReserved(key)) { + Object.defineProperty(vm, key, { + configurable: true, + enumerable: true, + get: function proxyGetter () { + return vm._data[key] + }, + set: function proxySetter (val) { + vm._data[key] = val; } - } - } - - /** - * Check if a node is a DocumentFragment. - * - * @param {Node} node - * @return {Boolean} - */ - - function isFragment(node) { - return node && node.nodeType === 11; + }); } - - /** - * Get outerHTML of elements, taking care - * of SVG elements in IE as well. - * - * @param {Element} el - * @return {String} - */ - - function getOuterHTML(el) { - if (el.outerHTML) { - return el.outerHTML; +} + +/* */ + +var VNode = function VNode ( + tag, + data, + children, + text, + elm, + ns, + context, + componentOptions +) { + this.tag = tag; + this.data = data; + this.children = children; + this.text = text; + this.elm = elm; + this.ns = ns; + this.context = context; + this.functionalContext = undefined; + this.key = data && data.key; + this.componentOptions = componentOptions; + this.child = undefined; + this.parent = undefined; + this.raw = false; + this.isStatic = false; + this.isRootInsert = true; + this.isComment = false; + this.isCloned = false; +}; + +var emptyVNode = function () { + var node = new VNode(); + node.text = ''; + node.isComment = true; + return node +}; + +// optimized shallow clone +// used for static nodes and slot nodes because they may be reused across +// multiple renders, cloning them avoids errors when DOM manipulations rely +// on their elm reference. +function cloneVNode (vnode) { + var cloned = new VNode( + vnode.tag, + vnode.data, + vnode.children, + vnode.text, + vnode.elm, + vnode.ns, + vnode.context, + vnode.componentOptions + ); + cloned.isStatic = vnode.isStatic; + cloned.key = vnode.key; + cloned.isCloned = true; + return cloned +} + +function cloneVNodes (vnodes) { + var res = new Array(vnodes.length); + for (var i = 0; i < vnodes.length; i++) { + res[i] = cloneVNode(vnodes[i]); + } + return res +} + +/* */ + +function mergeVNodeHook (def, hookKey, hook, key) { + key = key + hookKey; + var injectedHash = def.__injected || (def.__injected = {}); + if (!injectedHash[key]) { + injectedHash[key] = true; + var oldHook = def[hookKey]; + if (oldHook) { + def[hookKey] = function () { + oldHook.apply(this, arguments); + hook.apply(this, arguments); + }; } else { - var container = document.createElement('div'); - container.appendChild(el.cloneNode(true)); - return container.innerHTML; - } - } - - var commonTagRE = /^(div|p|span|img|a|b|i|br|ul|ol|li|h1|h2|h3|h4|h5|h6|code|pre|table|th|td|tr|form|label|input|select|option|nav|article|section|header|footer)$/i; - var reservedTagRE = /^(slot|partial|component)$/i; - - var isUnknownElement = undefined; - if ('development' !== 'production') { - isUnknownElement = function (el, tag) { - if (tag.indexOf('-') > -1) { - // http://stackoverflow.com/a/28210364/1070244 - return el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement; + def[hookKey] = hook; + } + } +} + +/* */ + +function updateListeners ( + on, + oldOn, + add, + remove$$1, + vm +) { + var name, cur, old, fn, event, capture; + for (name in on) { + cur = on[name]; + old = oldOn[name]; + if (!cur) { + "development" !== 'production' && warn( + "Invalid handler for event \"" + name + "\": got " + String(cur), + vm + ); + } else if (!old) { + capture = name.charAt(0) === '!'; + event = capture ? name.slice(1) : name; + if (Array.isArray(cur)) { + add(event, (cur.invoker = arrInvoker(cur)), capture); } else { - return (/HTMLUnknownElement/.test(el.toString()) && - // Chrome returns unknown for several HTML5 elements. - // https://code.google.com/p/chromium/issues/detail?id=540526 - // Firefox returns unknown for some "Interactive elements." - !/^(data|time|rtc|rb|details|dialog|summary)$/.test(tag) - ); - } - }; - } - - /** - * Check if an element is a component, if yes return its - * component id. - * - * @param {Element} el - * @param {Object} options - * @return {Object|undefined} - */ - - function checkComponentAttr(el, options) { - var tag = el.tagName.toLowerCase(); - var hasAttrs = el.hasAttributes(); - if (!commonTagRE.test(tag) && !reservedTagRE.test(tag)) { - if (resolveAsset(options, 'components', tag)) { - return { id: tag }; + if (!cur.invoker) { + fn = cur; + cur = on[name] = {}; + cur.fn = fn; + cur.invoker = fnInvoker(cur); + } + add(event, cur.invoker, capture); + } + } else if (cur !== old) { + if (Array.isArray(old)) { + old.length = cur.length; + for (var i = 0; i < old.length; i++) { old[i] = cur[i]; } + on[name] = old; } else { - var is = hasAttrs && getIsBinding(el, options); - if (is) { - return is; - } else if ('development' !== 'production') { - var expectedTag = options._componentNameMap && options._componentNameMap[tag]; - if (expectedTag) { - warn('Unknown custom element: <' + tag + '> - ' + 'did you mean <' + expectedTag + '>? ' + 'HTML is case-insensitive, remember to use kebab-case in templates.'); - } else if (isUnknownElement(el, tag)) { - warn('Unknown custom element: <' + tag + '> - did you ' + 'register the component correctly? For recursive components, ' + 'make sure to provide the "name" option.'); - } - } + old.fn = cur; + on[name] = old; } - } else if (hasAttrs) { - return getIsBinding(el, options); } } - - /** - * Get "is" binding from an element. - * - * @param {Element} el - * @param {Object} options - * @return {Object|undefined} - */ - - function getIsBinding(el, options) { - // dynamic syntax - var exp = el.getAttribute('is'); - if (exp != null) { - if (resolveAsset(options, 'components', exp)) { - el.removeAttribute('is'); - return { id: exp }; - } - } else { - exp = getBindAttr(el, 'is'); - if (exp != null) { - return { id: exp, dynamic: true }; - } + for (name in oldOn) { + if (!on[name]) { + event = name.charAt(0) === '!' ? name.slice(1) : name; + remove$$1(event, oldOn[name].invoker); } } +} - /** - * Option overwriting strategies are functions that handle - * how to merge a parent option value and a child option - * value into the final value. - * - * All strategy functions follow the same signature: - * - * @param {*} parentVal - * @param {*} childVal - * @param {Vue} [vm] - */ - - var strats = config.optionMergeStrategies = Object.create(null); +function arrInvoker (arr) { + return function (ev) { + var arguments$1 = arguments; - /** - * Helper that recursively merges two data objects together. - */ - - function mergeData(to, from) { - var key, toVal, fromVal; - for (key in from) { - toVal = to[key]; - fromVal = from[key]; - if (!hasOwn(to, key)) { - set(to, key, fromVal); - } else if (isObject(toVal) && isObject(fromVal)) { - mergeData(toVal, fromVal); - } + var single = arguments.length === 1; + for (var i = 0; i < arr.length; i++) { + single ? arr[i](ev) : arr[i].apply(null, arguments$1); } - return to; } +} - /** - * Data - */ +function fnInvoker (o) { + return function (ev) { + var single = arguments.length === 1; + single ? o.fn(ev) : o.fn.apply(null, arguments); + } +} - strats.data = function (parentVal, childVal, vm) { - if (!vm) { - // in a Vue.extend merge, both should be functions - if (!childVal) { - return parentVal; - } - if (typeof childVal !== 'function') { - 'development' !== 'production' && warn('The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm); - return parentVal; - } - if (!parentVal) { - return childVal; - } - // when parentVal & childVal are both present, - // we need to return a function that returns the - // merged result of both functions... no need to - // check if parentVal is a function here because - // it has to be a function to pass previous merges. - return function mergedDataFn() { - return mergeData(childVal.call(this), parentVal.call(this)); - }; - } else if (parentVal || childVal) { - return function mergedInstanceDataFn() { - // instance merge - var instanceData = typeof childVal === 'function' ? childVal.call(vm) : childVal; - var defaultData = typeof parentVal === 'function' ? parentVal.call(vm) : undefined; - if (instanceData) { - return mergeData(instanceData, defaultData); +/* */ + +function normalizeChildren ( + children, + ns, + nestedIndex +) { + if (isPrimitive(children)) { + return [createTextVNode(children)] + } + if (Array.isArray(children)) { + var res = []; + for (var i = 0, l = children.length; i < l; i++) { + var c = children[i]; + var last = res[res.length - 1]; + // nested + if (Array.isArray(c)) { + res.push.apply(res, normalizeChildren(c, ns, ((nestedIndex || '') + "_" + i))); + } else if (isPrimitive(c)) { + if (last && last.text) { + last.text += String(c); + } else if (c !== '') { + // convert primitive to vnode + res.push(createTextVNode(c)); + } + } else if (c instanceof VNode) { + if (c.text && last && last.text) { + last.text += c.text; } else { - return defaultData; + // inherit parent namespace + if (ns) { + applyNS(c, ns); + } + // default key for nested array children (likely generated by v-for) + if (c.tag && c.key == null && nestedIndex != null) { + c.key = "__vlist" + nestedIndex + "_" + i + "__"; + } + res.push(c); } - }; - } - }; - - /** - * El - */ - - strats.el = function (parentVal, childVal, vm) { - if (!vm && childVal && typeof childVal !== 'function') { - 'development' !== 'production' && warn('The "el" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm); - return; + } } - var ret = childVal || parentVal; - // invoke the element factory if this is instance merge - return vm && typeof ret === 'function' ? ret.call(vm) : ret; - }; - - /** - * Hooks and param attributes are merged as arrays. - */ - - strats.init = strats.created = strats.ready = strats.attached = strats.detached = strats.beforeCompile = strats.compiled = strats.beforeDestroy = strats.destroyed = strats.activate = function (parentVal, childVal) { - return childVal ? parentVal ? parentVal.concat(childVal) : isArray(childVal) ? childVal : [childVal] : parentVal; - }; - - /** - * Assets - * - * When a vm is present (instance creation), we need to do - * a three-way merge between constructor options, instance - * options and parent options. - */ - - function mergeAssets(parentVal, childVal) { - var res = Object.create(parentVal || null); - return childVal ? extend(res, guardArrayAssets(childVal)) : res; + return res } +} - config._assetTypes.forEach(function (type) { - strats[type + 's'] = mergeAssets; - }); - - /** - * Events & Watchers. - * - * Events & watchers hashes should not overwrite one - * another, so we merge them as arrays. - */ +function createTextVNode (val) { + return new VNode(undefined, undefined, undefined, String(val)) +} - strats.watch = strats.events = function (parentVal, childVal) { - if (!childVal) return parentVal; - if (!parentVal) return childVal; - var ret = {}; - extend(ret, parentVal); - for (var key in childVal) { - var parent = ret[key]; - var child = childVal[key]; - if (parent && !isArray(parent)) { - parent = [parent]; +function applyNS (vnode, ns) { + if (vnode.tag && !vnode.ns) { + vnode.ns = ns; + if (vnode.children) { + for (var i = 0, l = vnode.children.length; i < l; i++) { + applyNS(vnode.children[i], ns); } - ret[key] = parent ? parent.concat(child) : [child]; } - return ret; - }; + } +} - /** - * Other object hashes. - */ +/* */ - strats.props = strats.methods = strats.computed = function (parentVal, childVal) { - if (!childVal) return parentVal; - if (!parentVal) return childVal; - var ret = Object.create(null); - extend(ret, parentVal); - extend(ret, childVal); - return ret; - }; +function getFirstComponentChild (children) { + return children && children.filter(function (c) { return c && c.componentOptions; })[0] +} - /** - * Default strategy. - */ +/* */ - var defaultStrat = function defaultStrat(parentVal, childVal) { - return childVal === undefined ? parentVal : childVal; - }; +var activeInstance = null; - /** - * Make sure component options get converted to actual - * constructors. - * - * @param {Object} options - */ +function initLifecycle (vm) { + var options = vm.$options; - function guardComponents(options) { - if (options.components) { - var components = options.components = guardArrayAssets(options.components); - var ids = Object.keys(components); - var def; - if ('development' !== 'production') { - var map = options._componentNameMap = {}; - } - for (var i = 0, l = ids.length; i < l; i++) { - var key = ids[i]; - if (commonTagRE.test(key) || reservedTagRE.test(key)) { - 'development' !== 'production' && warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + key); - continue; - } - // record a all lowercase <-> kebab-case mapping for - // possible custom element case error warning - if ('development' !== 'production') { - map[key.replace(/-/g, '').toLowerCase()] = hyphenate(key); - } - def = components[key]; - if (isPlainObject(def)) { - components[key] = Vue.extend(def); - } - } + // locate first non-abstract parent + var parent = options.parent; + if (parent && !options.abstract) { + while (parent.$options.abstract && parent.$parent) { + parent = parent.$parent; } + parent.$children.push(vm); } - /** - * Ensure all props option syntax are normalized into the - * Object-based format. - * - * @param {Object} options - */ + vm.$parent = parent; + vm.$root = parent ? parent.$root : vm; - function guardProps(options) { - var props = options.props; - var i, val; - if (isArray(props)) { - options.props = {}; - i = props.length; - while (i--) { - val = props[i]; - if (typeof val === 'string') { - options.props[val] = null; - } else if (val.name) { - options.props[val.name] = val; - } - } - } else if (isPlainObject(props)) { - var keys = Object.keys(props); - i = keys.length; - while (i--) { - val = props[keys[i]]; - if (typeof val === 'function') { - props[keys[i]] = { type: val }; - } - } - } - } + vm.$children = []; + vm.$refs = {}; - /** - * Guard an Array-format assets option and converted it - * into the key-value Object format. - * - * @param {Object|Array} assets - * @return {Object} - */ + vm._watcher = null; + vm._inactive = false; + vm._isMounted = false; + vm._isDestroyed = false; + vm._isBeingDestroyed = false; +} - function guardArrayAssets(assets) { - if (isArray(assets)) { - var res = {}; - var i = assets.length; - var asset; - while (i--) { - asset = assets[i]; - var id = typeof asset === 'function' ? asset.options && asset.options.name || asset.id : asset.name || asset.id; - if (!id) { - 'development' !== 'production' && warn('Array-syntax assets must provide a "name" or "id" field.'); +function lifecycleMixin (Vue) { + Vue.prototype._mount = function ( + el, + hydrating + ) { + var vm = this; + vm.$el = el; + if (!vm.$options.render) { + vm.$options.render = emptyVNode; + { + /* istanbul ignore if */ + if (vm.$options.template) { + warn( + 'You are using the runtime-only build of Vue where the template ' + + 'option is not available. Either pre-compile the templates into ' + + 'render functions, or use the compiler-included build.', + vm + ); } else { - res[id] = asset; + warn( + 'Failed to mount component: template or render function not defined.', + vm + ); } } - return res; } - return assets; - } - - /** - * Merge two option objects into a new one. - * Core utility used in both instantiation and inheritance. - * - * @param {Object} parent - * @param {Object} child - * @param {Vue} [vm] - if vm is present, indicates this is - * an instantiation merge. - */ - - function mergeOptions(parent, child, vm) { - guardComponents(child); - guardProps(child); - if ('development' !== 'production') { - if (child.propsData && !vm) { - warn('propsData can only be used as an instantiation option.'); - } + callHook(vm, 'beforeMount'); + vm._watcher = new Watcher(vm, function () { + vm._update(vm._render(), hydrating); + }, noop); + hydrating = false; + // manually mounted instance, call mounted on self + // mounted is called for render-created child components in its inserted hook + if (vm.$vnode == null) { + vm._isMounted = true; + callHook(vm, 'mounted'); } - var options = {}; - var key; - if (child['extends']) { - parent = typeof child['extends'] === 'function' ? mergeOptions(parent, child['extends'].options, vm) : mergeOptions(parent, child['extends'], vm); + return vm + }; + + Vue.prototype._update = function (vnode, hydrating) { + var vm = this; + if (vm._isMounted) { + callHook(vm, 'beforeUpdate'); + } + var prevEl = vm.$el; + var prevActiveInstance = activeInstance; + activeInstance = vm; + var prevVnode = vm._vnode; + vm._vnode = vnode; + if (!prevVnode) { + // Vue.prototype.__patch__ is injected in entry points + // based on the rendering backend used. + vm.$el = vm.__patch__(vm.$el, vnode, hydrating); + } else { + vm.$el = vm.__patch__(prevVnode, vnode); } - if (child.mixins) { - for (var i = 0, l = child.mixins.length; i < l; i++) { - var mixin = child.mixins[i]; - var mixinOptions = mixin.prototype instanceof Vue ? mixin.options : mixin; - parent = mergeOptions(parent, mixinOptions, vm); - } + activeInstance = prevActiveInstance; + // update __vue__ reference + if (prevEl) { + prevEl.__vue__ = null; } - for (key in parent) { - mergeField(key); + if (vm.$el) { + vm.$el.__vue__ = vm; } - for (key in child) { - if (!hasOwn(parent, key)) { - mergeField(key); - } + // if parent is an HOC, update its $el as well + if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) { + vm.$parent.$el = vm.$el; } - function mergeField(key) { - var strat = strats[key] || defaultStrat; - options[key] = strat(parent[key], child[key], vm, key); + if (vm._isMounted) { + callHook(vm, 'updated'); } - return options; - } - - /** - * Resolve an asset. - * This function is used because child instances need access - * to assets defined in its ancestor chain. - * - * @param {Object} options - * @param {String} type - * @param {String} id - * @param {Boolean} warnMissing - * @return {Object|Function} - */ + }; - function resolveAsset(options, type, id, warnMissing) { - /* istanbul ignore if */ - if (typeof id !== 'string') { - return; + Vue.prototype._updateFromParent = function ( + propsData, + listeners, + parentVnode, + renderChildren + ) { + var vm = this; + var hasChildren = !!(vm.$options._renderChildren || renderChildren); + vm.$options._parentVnode = parentVnode; + vm.$options._renderChildren = renderChildren; + // update props + if (propsData && vm.$options.props) { + observerState.shouldConvert = false; + { + observerState.isSettingProps = true; + } + var propKeys = vm.$options._propKeys || []; + for (var i = 0; i < propKeys.length; i++) { + var key = propKeys[i]; + vm[key] = validateProp(key, vm.$options.props, propsData, vm); + } + observerState.shouldConvert = true; + { + observerState.isSettingProps = false; + } } - var assets = options[type]; - var camelizedId; - var res = assets[id] || - // camelCase ID - assets[camelizedId = camelize(id)] || - // Pascal Case ID - assets[camelizedId.charAt(0).toUpperCase() + camelizedId.slice(1)]; - if ('development' !== 'production' && warnMissing && !res) { - warn('Failed to resolve ' + type.slice(0, -1) + ': ' + id, options); + // update listeners + if (listeners) { + var oldListeners = vm.$options._parentListeners; + vm.$options._parentListeners = listeners; + vm._updateListeners(listeners, oldListeners); } - return res; - } - - var uid$1 = 0; - - /** - * A dep is an observable that can have multiple - * directives subscribing to it. - * - * @constructor - */ - function Dep() { - this.id = uid$1++; - this.subs = []; - } - - // the current target watcher being evaluated. - // this is globally unique because there could be only one - // watcher being evaluated at any time. - Dep.target = null; - - /** - * Add a directive subscriber. - * - * @param {Directive} sub - */ - - Dep.prototype.addSub = function (sub) { - this.subs.push(sub); - }; - - /** - * Remove a directive subscriber. - * - * @param {Directive} sub - */ - - Dep.prototype.removeSub = function (sub) { - this.subs.$remove(sub); - }; - - /** - * Add self as a dependency to the target watcher. - */ - - Dep.prototype.depend = function () { - Dep.target.addDep(this); - }; - - /** - * Notify all subscribers of a new value. - */ - - Dep.prototype.notify = function () { - // stablize the subscriber list first - var subs = toArray(this.subs); - for (var i = 0, l = subs.length; i < l; i++) { - subs[i].update(); + // resolve slots + force update if has children + if (hasChildren) { + vm.$slots = resolveSlots(renderChildren, vm._renderContext); + vm.$forceUpdate(); } }; - var arrayProto = Array.prototype; - var arrayMethods = Object.create(arrayProto) - - /** - * Intercept mutating methods and emit events - */ - - ;['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse'].forEach(function (method) { - // cache original method - var original = arrayProto[method]; - def(arrayMethods, method, function mutator() { - // avoid leaking arguments: - // http://jsperf.com/closure-with-arguments - var i = arguments.length; - var args = new Array(i); - while (i--) { - args[i] = arguments[i]; - } - var result = original.apply(this, args); - var ob = this.__ob__; - var inserted; - switch (method) { - case 'push': - inserted = args; - break; - case 'unshift': - inserted = args; - break; - case 'splice': - inserted = args.slice(2); - break; - } - if (inserted) ob.observeArray(inserted); - // notify change - ob.dep.notify(); - return result; - }); - }); - - /** - * Swap the element at the given index with a new value - * and emits corresponding event. - * - * @param {Number} index - * @param {*} val - * @return {*} - replaced element - */ - - def(arrayProto, '$set', function $set(index, val) { - if (index >= this.length) { - this.length = Number(index) + 1; + Vue.prototype.$forceUpdate = function () { + var vm = this; + if (vm._watcher) { + vm._watcher.update(); } - return this.splice(index, 1, val)[0]; - }); - - /** - * Convenience method to remove the element at given index or target element reference. - * - * @param {*} item - */ + }; - def(arrayProto, '$remove', function $remove(item) { - /* istanbul ignore if */ - if (!this.length) return; - var index = indexOf(this, item); - if (index > -1) { - return this.splice(index, 1); + Vue.prototype.$destroy = function () { + var vm = this; + if (vm._isBeingDestroyed) { + return } - }); - - var arrayKeys = Object.getOwnPropertyNames(arrayMethods); - - /** - * By default, when a reactive property is set, the new value is - * also converted to become reactive. However in certain cases, e.g. - * v-for scope alias and props, we don't want to force conversion - * because the value may be a nested value under a frozen data structure. - * - * So whenever we want to set a reactive property without forcing - * conversion on the new value, we wrap that call inside this function. - */ - - var shouldConvert = true; - - function withoutConversion(fn) { - shouldConvert = false; - fn(); - shouldConvert = true; - } - - /** - * Observer class that are attached to each observed - * object. Once attached, the observer converts target - * object's property keys into getter/setters that - * collect dependencies and dispatches updates. - * - * @param {Array|Object} value - * @constructor - */ - - function Observer(value) { - this.value = value; - this.dep = new Dep(); - def(value, '__ob__', this); - if (isArray(value)) { - var augment = hasProto ? protoAugment : copyAugment; - augment(value, arrayMethods, arrayKeys); - this.observeArray(value); - } else { - this.walk(value); + callHook(vm, 'beforeDestroy'); + vm._isBeingDestroyed = true; + // remove self from parent + var parent = vm.$parent; + if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) { + remove$1(parent.$children, vm); } - } - - // Instance methods - - /** - * Walk through each property and convert them into - * getter/setters. This method should only be called when - * value type is Object. - * - * @param {Object} obj - */ - - Observer.prototype.walk = function (obj) { - var keys = Object.keys(obj); - for (var i = 0, l = keys.length; i < l; i++) { - this.convert(keys[i], obj[keys[i]]); + // teardown watchers + if (vm._watcher) { + vm._watcher.teardown(); } + var i = vm._watchers.length; + while (i--) { + vm._watchers[i].teardown(); + } + // remove reference from data ob + // frozen object may not have observer. + if (vm._data.__ob__) { + vm._data.__ob__.vmCount--; + } + // call the last hook... + vm._isDestroyed = true; + callHook(vm, 'destroyed'); + // turn off all instance listeners. + vm.$off(); + // remove __vue__ reference + if (vm.$el) { + vm.$el.__vue__ = null; + } + // invoke destroy hooks on current rendered tree + vm.__patch__(vm._vnode, null); }; +} - /** - * Observe a list of Array items. - * - * @param {Array} items - */ - - Observer.prototype.observeArray = function (items) { - for (var i = 0, l = items.length; i < l; i++) { - observe(items[i]); +function callHook (vm, hook) { + var handlers = vm.$options[hook]; + if (handlers) { + for (var i = 0, j = handlers.length; i < j; i++) { + handlers[i].call(vm); } - }; - - /** - * Convert a property into getter/setter so we can emit - * the events when the property is accessed/changed. - * - * @param {String} key - * @param {*} val - */ - - Observer.prototype.convert = function (key, val) { - defineReactive(this.value, key, val); - }; - - /** - * Add an owner vm, so that when $set/$delete mutations - * happen we can notify owner vms to proxy the keys and - * digest the watchers. This is only called when the object - * is observed as an instance's root $data. - * - * @param {Vue} vm - */ - - Observer.prototype.addVm = function (vm) { - (this.vms || (this.vms = [])).push(vm); - }; - - /** - * Remove an owner vm. This is called when the object is - * swapped out as an instance's $data object. - * - * @param {Vue} vm - */ - - Observer.prototype.removeVm = function (vm) { - this.vms.$remove(vm); - }; + } + vm.$emit('hook:' + hook); +} - // helpers +/* */ - /** - * Augment an target Object or Array by intercepting - * the prototype chain using __proto__ - * - * @param {Object|Array} target - * @param {Object} src - */ +var hooks = { init: init, prepatch: prepatch, insert: insert, destroy: destroy$1 }; +var hooksToMerge = Object.keys(hooks); - function protoAugment(target, src) { - /* eslint-disable no-proto */ - target.__proto__ = src; - /* eslint-enable no-proto */ +function createComponent ( + Ctor, + data, + context, + children, + tag +) { + if (!Ctor) { + return } - /** - * Augment an target Object or Array by defining - * hidden properties. - * - * @param {Object|Array} target - * @param {Object} proto - */ - - function copyAugment(target, src, keys) { - for (var i = 0, l = keys.length; i < l; i++) { - var key = keys[i]; - def(target, key, src[key]); - } + if (isObject(Ctor)) { + Ctor = Vue$3.extend(Ctor); } - /** - * Attempt to create an observer instance for a value, - * returns the new observer if successfully observed, - * or the existing observer if the value already has one. - * - * @param {*} value - * @param {Vue} [vm] - * @return {Observer|undefined} - * @static - */ - - function observe(value, vm) { - if (!value || typeof value !== 'object') { - return; - } - var ob; - if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) { - ob = value.__ob__; - } else if (shouldConvert && (isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue) { - ob = new Observer(value); - } - if (ob && vm) { - ob.addVm(vm); + if (typeof Ctor !== 'function') { + { + warn(("Invalid Component definition: " + (String(Ctor))), context); } - return ob; + return } - /** - * Define a reactive property on an Object. - * - * @param {Object} obj - * @param {String} key - * @param {*} val - */ - - function defineReactive(obj, key, val) { - var dep = new Dep(); - - var property = Object.getOwnPropertyDescriptor(obj, key); - if (property && property.configurable === false) { - return; + // async component + if (!Ctor.cid) { + if (Ctor.resolved) { + Ctor = Ctor.resolved; + } else { + Ctor = resolveAsyncComponent(Ctor, function () { + // it's ok to queue this on every render because + // $forceUpdate is buffered by the scheduler. + context.$forceUpdate(); + }); + if (!Ctor) { + // return nothing if this is indeed an async component + // wait for the callback to trigger parent update. + return + } + } + } + + data = data || {}; + + // extract props + var propsData = extractProps(data, Ctor); + + // functional component + if (Ctor.options.functional) { + return createFunctionalComponent(Ctor, propsData, data, context, children) + } + + // extract listeners, since these needs to be treated as + // child component listeners instead of DOM listeners + var listeners = data.on; + // replace with listeners with .native modifier + data.on = data.nativeOn; + + if (Ctor.options.abstract) { + // abstract components do not keep anything + // other than props & listeners + data = {}; + } + + // merge component management hooks onto the placeholder node + mergeHooks(data); + + // return a placeholder vnode + var name = Ctor.options.name || tag; + var vnode = new VNode( + ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')), + data, undefined, undefined, undefined, undefined, context, + { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children } + ); + return vnode +} + +function createFunctionalComponent ( + Ctor, + propsData, + data, + context, + children +) { + var props = {}; + var propOptions = Ctor.options.props; + if (propOptions) { + for (var key in propOptions) { + props[key] = validateProp(key, propOptions, propsData); + } + } + var vnode = Ctor.options.render.call( + null, + // ensure the createElement function in functional components + // gets a unique context - this is necessary for correct named slot check + bind$1(createElement, { _self: Object.create(context) }), + { + props: props, + data: data, + parent: context, + children: normalizeChildren(children), + slots: function () { return resolveSlots(children, context); } + } + ); + if (vnode instanceof VNode) { + vnode.functionalContext = context; + if (data.slot) { + (vnode.data || (vnode.data = {})).slot = data.slot; + } + } + return vnode +} + +function createComponentInstanceForVnode ( + vnode, // we know it's MountedComponentVNode but flow doesn't + parent // activeInstance in lifecycle state +) { + var vnodeComponentOptions = vnode.componentOptions; + var options = { + _isComponent: true, + parent: parent, + propsData: vnodeComponentOptions.propsData, + _componentTag: vnodeComponentOptions.tag, + _parentVnode: vnode, + _parentListeners: vnodeComponentOptions.listeners, + _renderChildren: vnodeComponentOptions.children + }; + // check inline-template render functions + var inlineTemplate = vnode.data.inlineTemplate; + if (inlineTemplate) { + options.render = inlineTemplate.render; + options.staticRenderFns = inlineTemplate.staticRenderFns; + } + return new vnodeComponentOptions.Ctor(options) +} + +function init (vnode, hydrating) { + if (!vnode.child || vnode.child._isDestroyed) { + var child = vnode.child = createComponentInstanceForVnode(vnode, activeInstance); + child.$mount(hydrating ? vnode.elm : undefined, hydrating); + } +} + +function prepatch ( + oldVnode, + vnode +) { + var options = vnode.componentOptions; + var child = vnode.child = oldVnode.child; + child._updateFromParent( + options.propsData, // updated props + options.listeners, // updated listeners + vnode, // new parent vnode + options.children // new children + ); +} + +function insert (vnode) { + if (!vnode.child._isMounted) { + vnode.child._isMounted = true; + callHook(vnode.child, 'mounted'); + } + if (vnode.data.keepAlive) { + vnode.child._inactive = false; + callHook(vnode.child, 'activated'); + } +} + +function destroy$1 (vnode) { + if (!vnode.child._isDestroyed) { + if (!vnode.data.keepAlive) { + vnode.child.$destroy(); + } else { + vnode.child._inactive = true; + callHook(vnode.child, 'deactivated'); } - - // cater for pre-defined getter/setters - var getter = property && property.get; - var setter = property && property.set; - - var childOb = observe(val); - Object.defineProperty(obj, key, { - enumerable: true, - configurable: true, - get: function reactiveGetter() { - var value = getter ? getter.call(obj) : val; - if (Dep.target) { - dep.depend(); - if (childOb) { - childOb.dep.depend(); - } - if (isArray(value)) { - for (var e, i = 0, l = value.length; i < l; i++) { - e = value[i]; - e && e.__ob__ && e.__ob__.dep.depend(); - } - } - } - return value; - }, - set: function reactiveSetter(newVal) { - var value = getter ? getter.call(obj) : val; - if (newVal === value) { - return; - } - if (setter) { - setter.call(obj, newVal); - } else { - val = newVal; - } - childOb = observe(newVal); - dep.notify(); - } - }); } +} - - - var util = Object.freeze({ - defineReactive: defineReactive, - set: set, - del: del, - hasOwn: hasOwn, - isLiteral: isLiteral, - isReserved: isReserved, - _toString: _toString, - toNumber: toNumber, - toBoolean: toBoolean, - stripQuotes: stripQuotes, - camelize: camelize, - hyphenate: hyphenate, - classify: classify, - bind: bind, - toArray: toArray, - extend: extend, - isObject: isObject, - isPlainObject: isPlainObject, - def: def, - debounce: _debounce, - indexOf: indexOf, - cancellable: cancellable, - looseEqual: looseEqual, - isArray: isArray, - hasProto: hasProto, - inBrowser: inBrowser, - devtools: devtools, - isIE: isIE, - isIE9: isIE9, - isAndroid: isAndroid, - isIos: isIos, - iosVersionMatch: iosVersionMatch, - iosVersion: iosVersion, - hasMutationObserverBug: hasMutationObserverBug, - get transitionProp () { return transitionProp; }, - get transitionEndEvent () { return transitionEndEvent; }, - get animationProp () { return animationProp; }, - get animationEndEvent () { return animationEndEvent; }, - nextTick: nextTick, - get _Set () { return _Set; }, - query: query, - inDoc: inDoc, - getAttr: getAttr, - getBindAttr: getBindAttr, - hasBindAttr: hasBindAttr, - before: before, - after: after, - remove: remove, - prepend: prepend, - replace: replace, - on: on, - off: off, - setClass: setClass, - addClass: addClass, - removeClass: removeClass, - extractContent: extractContent, - trimNode: trimNode, - isTemplate: isTemplate, - createAnchor: createAnchor, - findRef: findRef, - mapNodeRange: mapNodeRange, - removeNodeRange: removeNodeRange, - isFragment: isFragment, - getOuterHTML: getOuterHTML, - mergeOptions: mergeOptions, - resolveAsset: resolveAsset, - checkComponentAttr: checkComponentAttr, - commonTagRE: commonTagRE, - reservedTagRE: reservedTagRE, - get warn () { return warn; } - }); - - var uid = 0; - - function initMixin (Vue) { - /** - * The main init sequence. This is called for every - * instance, including ones that are created from extended - * constructors. - * - * @param {Object} options - this options object should be - * the result of merging class - * options and the options passed - * in to the constructor. - */ - - Vue.prototype._init = function (options) { - options = options || {}; - - this.$el = null; - this.$parent = options.parent; - this.$root = this.$parent ? this.$parent.$root : this; - this.$children = []; - this.$refs = {}; // child vm references - this.$els = {}; // element references - this._watchers = []; // all watchers as an array - this._directives = []; // all directives - - // a uid - this._uid = uid++; - - // a flag to avoid this being observed - this._isVue = true; - - // events bookkeeping - this._events = {}; // registered callbacks - this._eventsCount = {}; // for $broadcast optimization - - // fragment instance properties - this._isFragment = false; - this._fragment = // @type {DocumentFragment} - this._fragmentStart = // @type {Text|Comment} - this._fragmentEnd = null; // @type {Text|Comment} - - // lifecycle state - this._isCompiled = this._isDestroyed = this._isReady = this._isAttached = this._isBeingDestroyed = this._vForRemoving = false; - this._unlinkFn = null; - - // context: - // if this is a transcluded component, context - // will be the common parent vm of this instance - // and its host. - this._context = options._context || this.$parent; - - // scope: - // if this is inside an inline v-for, the scope - // will be the intermediate scope created for this - // repeat fragment. this is used for linking props - // and container directives. - this._scope = options._scope; - - // fragment: - // if this instance is compiled inside a Fragment, it - // needs to reigster itself as a child of that fragment - // for attach/detach to work properly. - this._frag = options._frag; - if (this._frag) { - this._frag.children.push(this); - } - - // push self into parent / transclusion host - if (this.$parent) { - this.$parent.$children.push(this); - } - - // merge options. - options = this.$options = mergeOptions(this.constructor.options, options, this); - - // set ref - this._updateRef(); - - // initialize data as empty object. - // it will be filled up in _initData(). - this._data = {}; - - // call init hook - this._callHook('init'); - - // initialize data observation and scope inheritance. - this._initState(); - - // setup event system and option events. - this._initEvents(); - - // call created hook - this._callHook('created'); - - // if `el` option is passed, start compilation. - if (options.el) { - this.$mount(options.el); +function resolveAsyncComponent ( + factory, + cb +) { + if (factory.requested) { + // pool callbacks + factory.pendingCallbacks.push(cb); + } else { + factory.requested = true; + var cbs = factory.pendingCallbacks = [cb]; + var sync = true; + + var resolve = function (res) { + if (isObject(res)) { + res = Vue$3.extend(res); + } + // cache resolved + factory.resolved = res; + // invoke callbacks only if this is not a synchronous resolve + // (async resolves are shimmed as synchronous during SSR) + if (!sync) { + for (var i = 0, l = cbs.length; i < l; i++) { + cbs[i](res); + } } }; - } - - var pathCache = new Cache(1000); - - // actions - var APPEND = 0; - var PUSH = 1; - var INC_SUB_PATH_DEPTH = 2; - var PUSH_SUB_PATH = 3; - - // states - var BEFORE_PATH = 0; - var IN_PATH = 1; - var BEFORE_IDENT = 2; - var IN_IDENT = 3; - var IN_SUB_PATH = 4; - var IN_SINGLE_QUOTE = 5; - var IN_DOUBLE_QUOTE = 6; - var AFTER_PATH = 7; - var ERROR = 8; - - var pathStateMachine = []; - - pathStateMachine[BEFORE_PATH] = { - 'ws': [BEFORE_PATH], - 'ident': [IN_IDENT, APPEND], - '[': [IN_SUB_PATH], - 'eof': [AFTER_PATH] - }; - pathStateMachine[IN_PATH] = { - 'ws': [IN_PATH], - '.': [BEFORE_IDENT], - '[': [IN_SUB_PATH], - 'eof': [AFTER_PATH] - }; - - pathStateMachine[BEFORE_IDENT] = { - 'ws': [BEFORE_IDENT], - 'ident': [IN_IDENT, APPEND] - }; - - pathStateMachine[IN_IDENT] = { - 'ident': [IN_IDENT, APPEND], - '0': [IN_IDENT, APPEND], - 'number': [IN_IDENT, APPEND], - 'ws': [IN_PATH, PUSH], - '.': [BEFORE_IDENT, PUSH], - '[': [IN_SUB_PATH, PUSH], - 'eof': [AFTER_PATH, PUSH] - }; - - pathStateMachine[IN_SUB_PATH] = { - "'": [IN_SINGLE_QUOTE, APPEND], - '"': [IN_DOUBLE_QUOTE, APPEND], - '[': [IN_SUB_PATH, INC_SUB_PATH_DEPTH], - ']': [IN_PATH, PUSH_SUB_PATH], - 'eof': ERROR, - 'else': [IN_SUB_PATH, APPEND] - }; - - pathStateMachine[IN_SINGLE_QUOTE] = { - "'": [IN_SUB_PATH, APPEND], - 'eof': ERROR, - 'else': [IN_SINGLE_QUOTE, APPEND] - }; - - pathStateMachine[IN_DOUBLE_QUOTE] = { - '"': [IN_SUB_PATH, APPEND], - 'eof': ERROR, - 'else': [IN_DOUBLE_QUOTE, APPEND] - }; - - /** - * Determine the type of a character in a keypath. - * - * @param {Char} ch - * @return {String} type - */ - - function getPathCharType(ch) { - if (ch === undefined) { - return 'eof'; - } - - var code = ch.charCodeAt(0); - - switch (code) { - case 0x5B: // [ - case 0x5D: // ] - case 0x2E: // . - case 0x22: // " - case 0x27: // ' - case 0x30: - // 0 - return ch; - - case 0x5F: // _ - case 0x24: - // $ - return 'ident'; + var reject = function (reason) { + "development" !== 'production' && warn( + "Failed to resolve async component: " + (String(factory)) + + (reason ? ("\nReason: " + reason) : '') + ); + }; - case 0x20: // Space - case 0x09: // Tab - case 0x0A: // Newline - case 0x0D: // Return - case 0xA0: // No-break space - case 0xFEFF: // Byte Order Mark - case 0x2028: // Line Separator - case 0x2029: - // Paragraph Separator - return 'ws'; + var res = factory(resolve, reject); + + // handle promise + if (res && typeof res.then === 'function' && !factory.resolved) { + res.then(resolve, reject); + } + + sync = false; + // return in case resolved synchronously + return factory.resolved + } +} + +function extractProps (data, Ctor) { + // we are only extrating raw values here. + // validation and default values are handled in the child + // component itself. + var propOptions = Ctor.options.props; + if (!propOptions) { + return + } + var res = {}; + var attrs = data.attrs; + var props = data.props; + var domProps = data.domProps; + if (attrs || props || domProps) { + for (var key in propOptions) { + var altKey = hyphenate(key); + checkProp(res, props, key, altKey, true) || + checkProp(res, attrs, key, altKey) || + checkProp(res, domProps, key, altKey); + } + } + return res +} + +function checkProp ( + res, + hash, + key, + altKey, + preserve +) { + if (hash) { + if (hasOwn(hash, key)) { + res[key] = hash[key]; + if (!preserve) { + delete hash[key]; + } + return true + } else if (hasOwn(hash, altKey)) { + res[key] = hash[altKey]; + if (!preserve) { + delete hash[altKey]; + } + return true + } + } + return false +} + +function mergeHooks (data) { + if (!data.hook) { + data.hook = {}; + } + for (var i = 0; i < hooksToMerge.length; i++) { + var key = hooksToMerge[i]; + var fromParent = data.hook[key]; + var ours = hooks[key]; + data.hook[key] = fromParent ? mergeHook$1(ours, fromParent) : ours; + } +} + +function mergeHook$1 (a, b) { + // since all hooks have at most two args, use fixed args + // to avoid having to use fn.apply(). + return function (_, __) { + a(_, __); + b(_, __); + } +} + +/* */ + +// wrapper function for providing a more flexible interface +// without getting yelled at by flow +function createElement ( + tag, + data, + children +) { + if (data && (Array.isArray(data) || typeof data !== 'object')) { + children = data; + data = undefined; + } + // make sure to use real instance instead of proxy as context + return _createElement(this._self, tag, data, children) +} + +function _createElement ( + context, + tag, + data, + children +) { + if (data && data.__ob__) { + "development" !== 'production' && warn( + "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" + + 'Always create fresh vnode data objects in each render!', + context + ); + return + } + if (!tag) { + // in case of component :is set to falsy value + return emptyVNode() + } + if (typeof tag === 'string') { + var Ctor; + var ns = config.getTagNamespace(tag); + if (config.isReservedTag(tag)) { + // platform built-in elements + return new VNode( + tag, data, normalizeChildren(children, ns), + undefined, undefined, ns, context + ) + } else if ((Ctor = resolveAsset(context.$options, 'components', tag))) { + // component + return createComponent(Ctor, data, context, children, tag) + } else { + // unknown or unlisted namespaced elements + // check at runtime because it may get assigned a namespace when its + // parent normalizes children + return new VNode( + tag, data, normalizeChildren(children, ns), + undefined, undefined, ns, context + ) } + } else { + // direct component options / constructor + return createComponent(tag, data, context, children) + } +} + +/* */ + +function initRender (vm) { + vm.$vnode = null; // the placeholder node in parent tree + vm._vnode = null; // the root of the child tree + vm._staticTrees = null; + vm._renderContext = vm.$options._parentVnode && vm.$options._parentVnode.context; + vm.$slots = resolveSlots(vm.$options._renderChildren, vm._renderContext); + // bind the public createElement fn to this instance + // so that we get proper render context inside it. + vm.$createElement = bind$1(createElement, vm); + if (vm.$options.el) { + vm.$mount(vm.$options.el); + } +} + +function renderMixin (Vue) { + Vue.prototype.$nextTick = function (fn) { + nextTick(fn, this); + }; - // a-z, A-Z - if (code >= 0x61 && code <= 0x7A || code >= 0x41 && code <= 0x5A) { - return 'ident'; - } + Vue.prototype._render = function () { + var vm = this; + var ref = vm.$options; + var render = ref.render; + var staticRenderFns = ref.staticRenderFns; + var _parentVnode = ref._parentVnode; - // 1-9 - if (code >= 0x31 && code <= 0x39) { - return 'number'; + if (vm._isMounted) { + // clone slot nodes on re-renders + for (var key in vm.$slots) { + vm.$slots[key] = cloneVNodes(vm.$slots[key]); + } } - return 'else'; - } - - /** - * Format a subPath, return its plain form if it is - * a literal string or number. Otherwise prepend the - * dynamic indicator (*). - * - * @param {String} path - * @return {String} - */ - - function formatSubPath(path) { - var trimmed = path.trim(); - // invalid leading 0 - if (path.charAt(0) === '0' && isNaN(path)) { - return false; + if (staticRenderFns && !vm._staticTrees) { + vm._staticTrees = []; } - return isLiteral(trimmed) ? stripQuotes(trimmed) : '*' + trimmed; - } - - /** - * Parse a string path into an array of segments - * - * @param {String} path - * @return {Array|undefined} - */ - - function parse(path) { - var keys = []; - var index = -1; - var mode = BEFORE_PATH; - var subPathDepth = 0; - var c, newChar, key, type, transition, action, typeMap; - - var actions = []; - - actions[PUSH] = function () { - if (key !== undefined) { - keys.push(key); - key = undefined; - } - }; - - actions[APPEND] = function () { - if (key === undefined) { - key = newChar; - } else { - key += newChar; + // set parent vnode. this allows render functions to have access + // to the data on the placeholder node. + vm.$vnode = _parentVnode; + // render self + var vnode; + try { + vnode = render.call(vm._renderProxy, vm.$createElement); + } catch (e) { + { + warn(("Error when rendering " + (formatComponentName(vm)) + ":")); } - }; - - actions[INC_SUB_PATH_DEPTH] = function () { - actions[APPEND](); - subPathDepth++; - }; - - actions[PUSH_SUB_PATH] = function () { - if (subPathDepth > 0) { - subPathDepth--; - mode = IN_SUB_PATH; - actions[APPEND](); + /* istanbul ignore else */ + if (config.errorHandler) { + config.errorHandler.call(null, e, vm); } else { - subPathDepth = 0; - key = formatSubPath(key); - if (key === false) { - return false; + if (config._isServer) { + throw e } else { - actions[PUSH](); + setTimeout(function () { throw e }, 0); } } - }; - - function maybeUnescapeQuote() { - var nextChar = path[index + 1]; - if (mode === IN_SINGLE_QUOTE && nextChar === "'" || mode === IN_DOUBLE_QUOTE && nextChar === '"') { - index++; - newChar = '\\' + nextChar; - actions[APPEND](); - return true; - } + // return previous vnode to prevent render error causing blank component + vnode = vm._vnode; } - - while (mode != null) { - index++; - c = path[index]; - - if (c === '\\' && maybeUnescapeQuote()) { - continue; - } - - type = getPathCharType(c); - typeMap = pathStateMachine[mode]; - transition = typeMap[type] || typeMap['else'] || ERROR; - - if (transition === ERROR) { - return; // parse error + // return empty vnode in case the render function errored out + if (!(vnode instanceof VNode)) { + if ("development" !== 'production' && Array.isArray(vnode)) { + warn( + 'Multiple root nodes returned from render function. Render function ' + + 'should return a single root node.', + vm + ); } + vnode = emptyVNode(); + } + // set parent + vnode.parent = _parentVnode; + return vnode + }; - mode = transition[0]; - action = actions[transition[1]]; - if (action) { - newChar = transition[2]; - newChar = newChar === undefined ? c : newChar; - if (action() === false) { - return; + // shorthands used in render functions + Vue.prototype._h = createElement; + // toString for mustaches + Vue.prototype._s = _toString; + // number conversion + Vue.prototype._n = toNumber; + // empty vnode + Vue.prototype._e = emptyVNode; + // loose equal + Vue.prototype._q = looseEqual; + // loose indexOf + Vue.prototype._i = looseIndexOf; + + // render static tree by index + Vue.prototype._m = function renderStatic ( + index, + isInFor + ) { + var tree = this._staticTrees[index]; + // if has already-rendered static tree and not inside v-for, + // we can reuse the same tree by doing a shallow clone. + if (tree && !isInFor) { + return Array.isArray(tree) + ? cloneVNodes(tree) + : cloneVNode(tree) + } + // otherwise, render a fresh tree. + tree = this._staticTrees[index] = this.$options.staticRenderFns[index].call(this._renderProxy); + if (Array.isArray(tree)) { + for (var i = 0; i < tree.length; i++) { + if (typeof tree[i] !== 'string') { + tree[i].isStatic = true; + tree[i].key = "__static__" + index + "_" + i; } } - - if (mode === AFTER_PATH) { - keys.raw = path; - return keys; - } + } else { + tree.isStatic = true; + tree.key = "__static__" + index; } - } + return tree + }; - /** - * External parse that check for a cache hit first - * - * @param {String} path - * @return {Array|undefined} - */ + // filter resolution helper + var identity = function (_) { return _; }; + Vue.prototype._f = function resolveFilter (id) { + return resolveAsset(this.$options, 'filters', id, true) || identity + }; - function parsePath(path) { - var hit = pathCache.get(path); - if (!hit) { - hit = parse(path); - if (hit) { - pathCache.put(path, hit); + // render v-for + Vue.prototype._l = function renderList ( + val, + render + ) { + var ret, i, l, keys, key; + if (Array.isArray(val)) { + ret = new Array(val.length); + for (i = 0, l = val.length; i < l; i++) { + ret[i] = render(val[i], i); + } + } else if (typeof val === 'number') { + ret = new Array(val); + for (i = 0; i < val; i++) { + ret[i] = render(i + 1, i); + } + } else if (isObject(val)) { + keys = Object.keys(val); + ret = new Array(keys.length); + for (i = 0, l = keys.length; i < l; i++) { + key = keys[i]; + ret[i] = render(val[key], key, i); } } - return hit; - } - - /** - * Get from an object from a path string - * - * @param {Object} obj - * @param {String} path - */ - - function getPath(obj, path) { - return parseExpression(path).get(obj); - } - - /** - * Warn against setting non-existent root path on a vm. - */ - - var warnNonExistent; - if ('development' !== 'production') { - warnNonExistent = function (path, vm) { - warn('You are setting a non-existent path "' + path.raw + '" ' + 'on a vm instance. Consider pre-initializing the property ' + 'with the "data" option for more reliable reactivity ' + 'and better performance.', vm); - }; - } + return ret + }; - /** - * Set on an object from a path - * - * @param {Object} obj - * @param {String | Array} path - * @param {*} val - */ + // renderSlot + Vue.prototype._t = function ( + name, + fallback + ) { + var slotNodes = this.$slots[name]; + // warn duplicate slot usage + if (slotNodes && "development" !== 'production') { + slotNodes._rendered && warn( + "Duplicate presence of slot \"" + name + "\" found in the same render tree " + + "- this will likely cause render errors.", + this + ); + slotNodes._rendered = true; + } + return slotNodes || fallback + }; - function setPath(obj, path, val) { - var original = obj; - if (typeof path === 'string') { - path = parse(path); - } - if (!path || !isObject(obj)) { - return false; - } - var last, key; - for (var i = 0, l = path.length; i < l; i++) { - last = obj; - key = path[i]; - if (key.charAt(0) === '*') { - key = parseExpression(key.slice(1)).get.call(original, original); - } - if (i < l - 1) { - obj = obj[key]; - if (!isObject(obj)) { - obj = {}; - if ('development' !== 'production' && last._isVue) { - warnNonExistent(path, last); - } - set(last, key, obj); - } + // apply v-bind object + Vue.prototype._b = function bindProps ( + data, + value, + asProp + ) { + if (value) { + if (!isObject(value)) { + "development" !== 'production' && warn( + 'v-bind without argument expects an Object or Array value', + this + ); } else { - if (isArray(obj)) { - obj.$set(key, val); - } else if (key in obj) { - obj[key] = val; - } else { - if ('development' !== 'production' && obj._isVue) { - warnNonExistent(path, obj); + if (Array.isArray(value)) { + value = toObject(value); + } + for (var key in value) { + if (key === 'class' || key === 'style') { + data[key] = value[key]; + } else { + var hash = asProp || config.mustUseProp(key) + ? data.domProps || (data.domProps = {}) + : data.attrs || (data.attrs = {}); + hash[key] = value[key]; } - set(obj, key, val); } } } - return true; - } - -var path = Object.freeze({ - parsePath: parsePath, - getPath: getPath, - setPath: setPath - }); - - var expressionCache = new Cache(1000); - - var allowedKeywords = 'Math,Date,this,true,false,null,undefined,Infinity,NaN,' + 'isNaN,isFinite,decodeURI,decodeURIComponent,encodeURI,' + 'encodeURIComponent,parseInt,parseFloat'; - var allowedKeywordsRE = new RegExp('^(' + allowedKeywords.replace(/,/g, '\\b|') + '\\b)'); - - // keywords that don't make sense inside expressions - var improperKeywords = 'break,case,class,catch,const,continue,debugger,default,' + 'delete,do,else,export,extends,finally,for,function,if,' + 'import,in,instanceof,let,return,super,switch,throw,try,' + 'var,while,with,yield,enum,await,implements,package,' + 'protected,static,interface,private,public'; - var improperKeywordsRE = new RegExp('^(' + improperKeywords.replace(/,/g, '\\b|') + '\\b)'); - - var wsRE = /\s/g; - var newlineRE = /\n/g; - var saveRE = /[\{,]\s*[\w\$_]+\s*:|('(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`)|new |typeof |void /g; - var restoreRE = /"(\d+)"/g; - var pathTestRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?'\]|\[".*?"\]|\[\d+\]|\[[A-Za-z_$][\w$]*\])*$/; - var identRE = /[^\w$\.](?:[A-Za-z_$][\w$]*)/g; - var literalValueRE$1 = /^(?:true|false|null|undefined|Infinity|NaN)$/; - - function noop() {} - - /** - * Save / Rewrite / Restore - * - * When rewriting paths found in an expression, it is - * possible for the same letter sequences to be found in - * strings and Object literal property keys. Therefore we - * remove and store these parts in a temporary array, and - * restore them after the path rewrite. - */ - - var saved = []; - - /** - * Save replacer - * - * The save regex can match two possible cases: - * 1. An opening object literal - * 2. A string - * If matched as a plain string, we need to escape its - * newlines, since the string needs to be preserved when - * generating the function body. - * - * @param {String} str - * @param {String} isString - str if matched as a string - * @return {String} - placeholder with index - */ - - function save(str, isString) { - var i = saved.length; - saved[i] = isString ? str.replace(newlineRE, '\\n') : str; - return '"' + i + '"'; - } - - /** - * Path rewrite replacer - * - * @param {String} raw - * @return {String} - */ + return data + }; - function rewrite(raw) { - var c = raw.charAt(0); - var path = raw.slice(1); - if (allowedKeywordsRE.test(path)) { - return raw; + // expose v-on keyCodes + Vue.prototype._k = function getKeyCodes (key) { + return config.keyCodes[key] + }; +} + +function resolveSlots ( + renderChildren, + context +) { + var slots = {}; + if (!renderChildren) { + return slots + } + var children = normalizeChildren(renderChildren) || []; + var defaultSlot = []; + var name, child; + for (var i = 0, l = children.length; i < l; i++) { + child = children[i]; + // named slots should only be respected if the vnode was rendered in the + // same context. + if ((child.context === context || child.functionalContext === context) && + child.data && (name = child.data.slot)) { + var slot = (slots[name] || (slots[name] = [])); + if (child.tag === 'template') { + slot.push.apply(slot, child.children); + } else { + slot.push(child); + } } else { - path = path.indexOf('"') > -1 ? path.replace(restoreRE, restore) : path; - return c + 'scope.' + path; + defaultSlot.push(child); } } - - /** - * Restore replacer - * - * @param {String} str - * @param {String} i - matched save index - * @return {String} - */ - - function restore(str, i) { - return saved[i]; + // ignore single whitespace + if (defaultSlot.length && !( + defaultSlot.length === 1 && + (defaultSlot[0].text === ' ' || defaultSlot[0].isComment) + )) { + slots.default = defaultSlot; } + return slots +} - /** - * Rewrite an expression, prefixing all path accessors with - * `scope.` and generate getter/setter functions. - * - * @param {String} exp - * @return {Function} - */ +/* */ - function compileGetter(exp) { - if (improperKeywordsRE.test(exp)) { - 'development' !== 'production' && warn('Avoid using reserved keywords in expression: ' + exp); - } - // reset state - saved.length = 0; - // save strings and object literal keys - var body = exp.replace(saveRE, save).replace(wsRE, ''); - // rewrite all paths - // pad 1 space here because the regex matches 1 extra char - body = (' ' + body).replace(identRE, rewrite).replace(restoreRE, restore); - return makeGetterFn(body); +function initEvents (vm) { + vm._events = Object.create(null); + // init parent attached events + var listeners = vm.$options._parentListeners; + var on = bind$1(vm.$on, vm); + var off = bind$1(vm.$off, vm); + vm._updateListeners = function (listeners, oldListeners) { + updateListeners(listeners, oldListeners || {}, on, off, vm); + }; + if (listeners) { + vm._updateListeners(listeners); } +} - /** - * Build a getter function. Requires eval. - * - * We isolate the try/catch so it doesn't affect the - * optimization of the parse function when it is not called. - * - * @param {String} body - * @return {Function|undefined} - */ +function eventsMixin (Vue) { + Vue.prototype.$on = function (event, fn) { + var vm = this;(vm._events[event] || (vm._events[event] = [])).push(fn); + return vm + }; - function makeGetterFn(body) { - try { - /* eslint-disable no-new-func */ - return new Function('scope', 'return ' + body + ';'); - /* eslint-enable no-new-func */ - } catch (e) { - if ('development' !== 'production') { - /* istanbul ignore if */ - if (e.toString().match(/unsafe-eval|CSP/)) { - warn('It seems you are using the default build of Vue.js in an environment ' + 'with Content Security Policy that prohibits unsafe-eval. ' + 'Use the CSP-compliant build instead: ' + 'http://vuejs.org/guide/installation.html#CSP-compliant-build'); - } else { - warn('Invalid expression. ' + 'Generated function body: ' + body); - } - } - return noop; + Vue.prototype.$once = function (event, fn) { + var vm = this; + function on () { + vm.$off(event, on); + fn.apply(vm, arguments); } - } - - /** - * Compile a setter function for the expression. - * - * @param {String} exp - * @return {Function|undefined} - */ + on.fn = fn; + vm.$on(event, on); + return vm + }; - function compileSetter(exp) { - var path = parsePath(exp); - if (path) { - return function (scope, val) { - setPath(scope, path, val); - }; - } else { - 'development' !== 'production' && warn('Invalid setter expression: ' + exp); + Vue.prototype.$off = function (event, fn) { + var vm = this; + // all + if (!arguments.length) { + vm._events = Object.create(null); + return vm + } + // specific event + var cbs = vm._events[event]; + if (!cbs) { + return vm + } + if (arguments.length === 1) { + vm._events[event] = null; + return vm + } + // specific handler + var cb; + var i = cbs.length; + while (i--) { + cb = cbs[i]; + if (cb === fn || cb.fn === fn) { + cbs.splice(i, 1); + break + } } - } - - /** - * Parse an expression into re-written getter/setters. - * - * @param {String} exp - * @param {Boolean} needSet - * @return {Function} - */ + return vm + }; - function parseExpression(exp, needSet) { - exp = exp.trim(); - // try cache - var hit = expressionCache.get(exp); - if (hit) { - if (needSet && !hit.set) { - hit.set = compileSetter(hit.exp); + Vue.prototype.$emit = function (event) { + var vm = this; + var cbs = vm._events[event]; + if (cbs) { + cbs = cbs.length > 1 ? toArray(cbs) : cbs; + var args = toArray(arguments, 1); + for (var i = 0, l = cbs.length; i < l; i++) { + cbs[i].apply(vm, args); } - return hit; } - var res = { exp: exp }; - res.get = isSimplePath(exp) && exp.indexOf('[') < 0 - // optimized super simple getter - ? makeGetterFn('scope.' + exp) - // dynamic getter - : compileGetter(exp); - if (needSet) { - res.set = compileSetter(exp); + return vm + }; +} + +/* */ + +var uid = 0; + +function initMixin (Vue) { + Vue.prototype._init = function (options) { + var vm = this; + // a uid + vm._uid = uid++; + // a flag to avoid this being observed + vm._isVue = true; + // merge options + if (options && options._isComponent) { + // optimize internal component instantiation + // since dynamic options merging is pretty slow, and none of the + // internal component options needs special treatment. + initInternalComponent(vm, options); + } else { + vm.$options = mergeOptions( + resolveConstructorOptions(vm), + options || {}, + vm + ); } - expressionCache.put(exp, res); - return res; - } - - /** - * Check if an expression is a simple path. - * - * @param {String} exp - * @return {Boolean} - */ - - function isSimplePath(exp) { - return pathTestRE.test(exp) && - // don't treat literal values as paths - !literalValueRE$1.test(exp) && - // Math constants e.g. Math.PI, Math.E etc. - exp.slice(0, 5) !== 'Math.'; - } - -var expression = Object.freeze({ - parseExpression: parseExpression, - isSimplePath: isSimplePath - }); - - // we have two separate queues: one for directive updates - // and one for user watcher registered via $watch(). - // we want to guarantee directive updates to be called - // before user watchers so that when user watchers are - // triggered, the DOM would have already been in updated - // state. - - var queue = []; - var userQueue = []; - var has = {}; - var circular = {}; - var waiting = false; - - /** - * Reset the batcher's state. - */ - - function resetBatcherState() { - queue.length = 0; - userQueue.length = 0; - has = {}; - circular = {}; - waiting = false; - } - - /** - * Flush both queues and run the watchers. - */ - - function flushBatcherQueue() { - var _again = true; - - _function: while (_again) { - _again = false; + /* istanbul ignore else */ + { + initProxy(vm); + } + // expose real self + vm._self = vm; + initLifecycle(vm); + initEvents(vm); + callHook(vm, 'beforeCreate'); + initState(vm); + callHook(vm, 'created'); + initRender(vm); + }; - runBatcherQueue(queue); - runBatcherQueue(userQueue); - // user watchers triggered more watchers, - // keep flushing until it depletes - if (queue.length) { - _again = true; - continue _function; - } - // dev tool hook - /* istanbul ignore if */ - if (devtools && config.devtools) { - devtools.emit('flush'); - } - resetBatcherState(); + function initInternalComponent (vm, options) { + var opts = vm.$options = Object.create(resolveConstructorOptions(vm)); + // doing this because it's faster than dynamic enumeration. + opts.parent = options.parent; + opts.propsData = options.propsData; + opts._parentVnode = options._parentVnode; + opts._parentListeners = options._parentListeners; + opts._renderChildren = options._renderChildren; + opts._componentTag = options._componentTag; + if (options.render) { + opts.render = options.render; + opts.staticRenderFns = options.staticRenderFns; } } - /** - * Run the watchers in a single queue. - * - * @param {Array} queue - */ - - function runBatcherQueue(queue) { - // do not cache length because more watchers might be pushed - // as we run existing watchers - for (var i = 0; i < queue.length; i++) { - var watcher = queue[i]; - var id = watcher.id; - has[id] = null; - watcher.run(); - // in dev build, check and stop circular updates. - if ('development' !== 'production' && has[id] != null) { - circular[id] = (circular[id] || 0) + 1; - if (circular[id] > config._maxUpdateCount) { - warn('You may have an infinite update loop for watcher ' + 'with expression "' + watcher.expression + '"', watcher.vm); - break; + function resolveConstructorOptions (vm) { + var Ctor = vm.constructor; + var options = Ctor.options; + if (Ctor.super) { + var superOptions = Ctor.super.options; + var cachedSuperOptions = Ctor.superOptions; + if (superOptions !== cachedSuperOptions) { + // super option changed + Ctor.superOptions = superOptions; + options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions); + if (options.name) { + options.components[options.name] = Ctor; } } } - queue.length = 0; + return options } +} - /** - * Push a watcher into the watcher queue. - * Jobs with duplicate IDs will be skipped unless it's - * pushed when the queue is being flushed. - * - * @param {Watcher} watcher - * properties: - * - {Number} id - * - {Function} run - */ - - function pushWatcher(watcher) { - var id = watcher.id; - if (has[id] == null) { - // push watcher into appropriate queue - var q = watcher.user ? userQueue : queue; - has[id] = q.length; - q.push(watcher); - // queue the flush - if (!waiting) { - waiting = true; - nextTick(flushBatcherQueue); - } - } - } - - var uid$2 = 0; - - /** - * A watcher parses an expression, collects dependencies, - * and fires callback when the expression value changes. - * This is used for both the $watch() api and directives. - * - * @param {Vue} vm - * @param {String|Function} expOrFn - * @param {Function} cb - * @param {Object} options - * - {Array} filters - * - {Boolean} twoWay - * - {Boolean} deep - * - {Boolean} user - * - {Boolean} sync - * - {Boolean} lazy - * - {Function} [preProcess] - * - {Function} [postProcess] - * @constructor - */ - function Watcher(vm, expOrFn, cb, options) { - // mix in options - if (options) { - extend(this, options); - } - var isFn = typeof expOrFn === 'function'; - this.vm = vm; - vm._watchers.push(this); - this.expression = expOrFn; - this.cb = cb; - this.id = ++uid$2; // uid for batching - this.active = true; - this.dirty = this.lazy; // for lazy watchers - this.deps = []; - this.newDeps = []; - this.depIds = new _Set(); - this.newDepIds = new _Set(); - this.prevError = null; // for async error stacks - // parse expression for getter/setter - if (isFn) { - this.getter = expOrFn; - this.setter = undefined; - } else { - var res = parseExpression(expOrFn, this.twoWay); - this.getter = res.get; - this.setter = res.set; - } - this.value = this.lazy ? undefined : this.get(); - // state for avoiding false triggers for deep and Array - // watchers during vm._digest() - this.queued = this.shallow = false; +function Vue$3 (options) { + if ("development" !== 'production' && + !(this instanceof Vue$3)) { + warn('Vue is a constructor and should be called with the `new` keyword'); } + this._init(options); +} - /** - * Evaluate the getter, and re-collect dependencies. - */ +initMixin(Vue$3); +stateMixin(Vue$3); +eventsMixin(Vue$3); +lifecycleMixin(Vue$3); +renderMixin(Vue$3); - Watcher.prototype.get = function () { - this.beforeGet(); - var scope = this.scope || this.vm; - var value; - try { - value = this.getter.call(scope, scope); - } catch (e) { - if ('development' !== 'production' && config.warnExpressionErrors) { - warn('Error when evaluating expression ' + '"' + this.expression + '": ' + e.toString(), this.vm); - } - } - // "touch" every property so they are all tracked as - // dependencies for deep watching - if (this.deep) { - traverse(value); - } - if (this.preProcess) { - value = this.preProcess(value); - } - if (this.filters) { - value = scope._applyFilters(value, null, this.filters, false); - } - if (this.postProcess) { - value = this.postProcess(value); - } - this.afterGet(); - return value; - }; +var warn = noop; +var formatComponentName; - /** - * Set the corresponding value with the setter. - * - * @param {*} value - */ +{ + var hasConsole = typeof console !== 'undefined'; - Watcher.prototype.set = function (value) { - var scope = this.scope || this.vm; - if (this.filters) { - value = scope._applyFilters(value, this.value, this.filters, true); - } - try { - this.setter.call(scope, scope, value); - } catch (e) { - if ('development' !== 'production' && config.warnExpressionErrors) { - warn('Error when evaluating setter ' + '"' + this.expression + '": ' + e.toString(), this.vm); - } - } - // two-way sync for v-for alias - var forContext = scope.$forContext; - if (forContext && forContext.alias === this.expression) { - if (forContext.filters) { - 'development' !== 'production' && warn('It seems you are using two-way binding on ' + 'a v-for alias (' + this.expression + '), and the ' + 'v-for has filters. This will not work properly. ' + 'Either remove the filters or use an array of ' + 'objects and bind to object properties instead.', this.vm); - return; - } - forContext._withLock(function () { - if (scope.$key) { - // original is an object - forContext.rawValue[scope.$key] = value; - } else { - forContext.rawValue.$set(scope.$index, value); - } - }); + warn = function (msg, vm) { + if (hasConsole && (!config.silent)) { + console.error("[Vue warn]: " + msg + " " + ( + vm ? formatLocation(formatComponentName(vm)) : '' + )); } }; - /** - * Prepare for dependency collection. - */ - - Watcher.prototype.beforeGet = function () { - Dep.target = this; + formatComponentName = function (vm) { + if (vm.$root === vm) { + return 'root instance' + } + var name = vm._isVue + ? vm.$options.name || vm.$options._componentTag + : vm.name; + return ( + (name ? ("component <" + name + ">") : "anonymous component") + + (vm._isVue && vm.$options.__file ? (" at " + (vm.$options.__file)) : '') + ) }; - /** - * Add a dependency to this directive. - * - * @param {Dep} dep - */ - - Watcher.prototype.addDep = function (dep) { - var id = dep.id; - if (!this.newDepIds.has(id)) { - this.newDepIds.add(id); - this.newDeps.push(dep); - if (!this.depIds.has(id)) { - dep.addSub(this); - } + var formatLocation = function (str) { + if (str === 'anonymous component') { + str += " - use the \"name\" option for better debugging messages."; } + return ("\n(found in " + str + ")") }; +} - /** - * Clean up for dependency collection. - */ - - Watcher.prototype.afterGet = function () { - Dep.target = null; - var i = this.deps.length; - while (i--) { - var dep = this.deps[i]; - if (!this.newDepIds.has(dep.id)) { - dep.removeSub(this); - } - } - var tmp = this.depIds; - this.depIds = this.newDepIds; - this.newDepIds = tmp; - this.newDepIds.clear(); - tmp = this.deps; - this.deps = this.newDeps; - this.newDeps = tmp; - this.newDeps.length = 0; - }; +/* */ - /** - * Subscriber interface. - * Will be called when a dependency changes. - * - * @param {Boolean} shallow - */ +/** + * Option overwriting strategies are functions that handle + * how to merge a parent option value and a child option + * value into the final value. + */ +var strats = config.optionMergeStrategies; - Watcher.prototype.update = function (shallow) { - if (this.lazy) { - this.dirty = true; - } else if (this.sync || !config.async) { - this.run(); - } else { - // if queued, only overwrite shallow with non-shallow, - // but not the other way around. - this.shallow = this.queued ? shallow ? this.shallow : false : !!shallow; - this.queued = true; - // record before-push error stack in debug mode - /* istanbul ignore if */ - if ('development' !== 'production' && config.debug) { - this.prevError = new Error('[vue] async stack trace'); - } - pushWatcher(this); +/** + * Options with restrictions + */ +{ + strats.el = strats.propsData = function (parent, child, vm, key) { + if (!vm) { + warn( + "option \"" + key + "\" can only be used during instance " + + 'creation with the `new` keyword.' + ); } + return defaultStrat(parent, child) }; +} - /** - * Batcher job interface. - * Will be called by the batcher. - */ - - Watcher.prototype.run = function () { - if (this.active) { - var value = this.get(); - if (value !== this.value || - // Deep watchers and watchers on Object/Arrays should fire even - // when the value is the same, because the value may - // have mutated; but only do so if this is a - // non-shallow update (caused by a vm digest). - (isObject(value) || this.deep) && !this.shallow) { - // set new value - var oldValue = this.value; - this.value = value; - // in debug + async mode, when a watcher callbacks - // throws, we also throw the saved before-push error - // so the full cross-tick stack trace is available. - var prevError = this.prevError; - /* istanbul ignore if */ - if ('development' !== 'production' && config.debug && prevError) { - this.prevError = null; - try { - this.cb.call(this.vm, value, oldValue); - } catch (e) { - nextTick(function () { - throw prevError; - }, 0); - throw e; - } - } else { - this.cb.call(this.vm, value, oldValue); - } +/** + * Helper that recursively merges two data objects together. + */ +function mergeData (to, from) { + var key, toVal, fromVal; + for (key in from) { + toVal = to[key]; + fromVal = from[key]; + if (!hasOwn(to, key)) { + set(to, key, fromVal); + } else if (isObject(toVal) && isObject(fromVal)) { + mergeData(toVal, fromVal); + } + } + return to +} + +/** + * Data + */ +strats.data = function ( + parentVal, + childVal, + vm +) { + if (!vm) { + // in a Vue.extend merge, both should be functions + if (!childVal) { + return parentVal + } + if (typeof childVal !== 'function') { + "development" !== 'production' && warn( + 'The "data" option should be a function ' + + 'that returns a per-instance value in component ' + + 'definitions.', + vm + ); + return parentVal + } + if (!parentVal) { + return childVal + } + // when parentVal & childVal are both present, + // we need to return a function that returns the + // merged result of both functions... no need to + // check if parentVal is a function here because + // it has to be a function to pass previous merges. + return function mergedDataFn () { + return mergeData( + childVal.call(this), + parentVal.call(this) + ) + } + } else if (parentVal || childVal) { + return function mergedInstanceDataFn () { + // instance merge + var instanceData = typeof childVal === 'function' + ? childVal.call(vm) + : childVal; + var defaultData = typeof parentVal === 'function' + ? parentVal.call(vm) + : undefined; + if (instanceData) { + return mergeData(instanceData, defaultData) + } else { + return defaultData } - this.queued = this.shallow = false; } - }; - - /** - * Evaluate the value of the watcher. - * This only gets called for lazy watchers. - */ - - Watcher.prototype.evaluate = function () { - // avoid overwriting another watcher that is being - // collected. - var current = Dep.target; - this.value = this.get(); - this.dirty = false; - Dep.target = current; - }; - - /** - * Depend on all deps collected by this watcher. - */ - - Watcher.prototype.depend = function () { - var i = this.deps.length; - while (i--) { - this.deps[i].depend(); - } - }; - - /** - * Remove self from all dependencies' subcriber list. - */ + } +}; - Watcher.prototype.teardown = function () { - if (this.active) { - // remove self from vm's watcher list - // this is a somewhat expensive operation so we skip it - // if the vm is being destroyed or is performing a v-for - // re-render (the watcher list is then filtered by v-for). - if (!this.vm._isBeingDestroyed && !this.vm._vForRemoving) { - this.vm._watchers.$remove(this); +/** + * Hooks and param attributes are merged as arrays. + */ +function mergeHook ( + parentVal, + childVal +) { + return childVal + ? parentVal + ? parentVal.concat(childVal) + : Array.isArray(childVal) + ? childVal + : [childVal] + : parentVal +} + +config._lifecycleHooks.forEach(function (hook) { + strats[hook] = mergeHook; +}); + +/** + * Assets + * + * When a vm is present (instance creation), we need to do + * a three-way merge between constructor options, instance + * options and parent options. + */ +function mergeAssets (parentVal, childVal) { + var res = Object.create(parentVal || null); + return childVal + ? extend(res, childVal) + : res +} + +config._assetTypes.forEach(function (type) { + strats[type + 's'] = mergeAssets; +}); + +/** + * Watchers. + * + * Watchers hashes should not overwrite one + * another, so we merge them as arrays. + */ +strats.watch = function (parentVal, childVal) { + /* istanbul ignore if */ + if (!childVal) { return parentVal } + if (!parentVal) { return childVal } + var ret = {}; + extend(ret, parentVal); + for (var key in childVal) { + var parent = ret[key]; + var child = childVal[key]; + if (parent && !Array.isArray(parent)) { + parent = [parent]; + } + ret[key] = parent + ? parent.concat(child) + : [child]; + } + return ret +}; + +/** + * Other object hashes. + */ +strats.props = +strats.methods = +strats.computed = function (parentVal, childVal) { + if (!childVal) { return parentVal } + if (!parentVal) { return childVal } + var ret = Object.create(null); + extend(ret, parentVal); + extend(ret, childVal); + return ret +}; + +/** + * Default strategy. + */ +var defaultStrat = function (parentVal, childVal) { + return childVal === undefined + ? parentVal + : childVal +}; + +/** + * Make sure component options get converted to actual + * constructors. + */ +function normalizeComponents (options) { + if (options.components) { + var components = options.components; + var def; + for (var key in components) { + var lower = key.toLowerCase(); + if (isBuiltInTag(lower) || config.isReservedTag(lower)) { + "development" !== 'production' && warn( + 'Do not use built-in or reserved HTML elements as component ' + + 'id: ' + key + ); + continue } - var i = this.deps.length; - while (i--) { - this.deps[i].removeSub(this); + def = components[key]; + if (isPlainObject(def)) { + components[key] = Vue$3.extend(def); } - this.active = false; - this.vm = this.cb = this.value = null; } - }; - - /** - * Recrusively traverse an object to evoke all converted - * getters, so that every nested property inside the object - * is collected as a "deep" dependency. - * - * @param {*} val - */ + } +} - var seenObjects = new _Set(); - function traverse(val, seen) { - var i = undefined, - keys = undefined; - if (!seen) { - seen = seenObjects; - seen.clear(); - } - var isA = isArray(val); - var isO = isObject(val); - if ((isA || isO) && Object.isExtensible(val)) { - if (val.__ob__) { - var depId = val.__ob__.dep.id; - if (seen.has(depId)) { - return; - } else { - seen.add(depId); - } - } - if (isA) { - i = val.length; - while (i--) traverse(val[i], seen); - } else if (isO) { - keys = Object.keys(val); - i = keys.length; - while (i--) traverse(val[keys[i]], seen); +/** + * Ensure all props option syntax are normalized into the + * Object-based format. + */ +function normalizeProps (options) { + var props = options.props; + if (!props) { return } + var res = {}; + var i, val, name; + if (Array.isArray(props)) { + i = props.length; + while (i--) { + val = props[i]; + if (typeof val === 'string') { + name = camelize(val); + res[name] = { type: null }; + } else { + warn('props must be strings when using array syntax.'); } } - } - - var text$1 = { - - bind: function bind() { - this.attr = this.el.nodeType === 3 ? 'data' : 'textContent'; - }, - - update: function update(value) { - this.el[this.attr] = _toString(value); + } else if (isPlainObject(props)) { + for (var key in props) { + val = props[key]; + name = camelize(key); + res[name] = isPlainObject(val) + ? val + : { type: val }; } - }; - - var templateCache = new Cache(1000); - var idSelectorCache = new Cache(1000); - - var map = { - efault: [0, '', ''], - legend: [1, '<fieldset>', '</fieldset>'], - tr: [2, '<table><tbody>', '</tbody></table>'], - col: [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>'] - }; - - map.td = map.th = [3, '<table><tbody><tr>', '</tr></tbody></table>']; - - map.option = map.optgroup = [1, '<select multiple="multiple">', '</select>']; - - map.thead = map.tbody = map.colgroup = map.caption = map.tfoot = [1, '<table>', '</table>']; - - map.g = map.defs = map.symbol = map.use = map.image = map.text = map.circle = map.ellipse = map.line = map.path = map.polygon = map.polyline = map.rect = [1, '<svg ' + 'xmlns="http://www.w3.org/2000/svg" ' + 'xmlns:xlink="http://www.w3.org/1999/xlink" ' + 'xmlns:ev="http://www.w3.org/2001/xml-events"' + 'version="1.1">', '</svg>']; - - /** - * Check if a node is a supported template node with a - * DocumentFragment content. - * - * @param {Node} node - * @return {Boolean} - */ - - function isRealTemplate(node) { - return isTemplate(node) && isFragment(node.content); } + options.props = res; +} - var tagRE$1 = /<([\w:-]+)/; - var entityRE = /&#?\w+?;/; - var commentRE = /<!--/; - - /** - * Convert a string template to a DocumentFragment. - * Determines correct wrapping by tag types. Wrapping - * strategy found in jQuery & component/domify. - * - * @param {String} templateString - * @param {Boolean} raw - * @return {DocumentFragment} - */ - - function stringToFragment(templateString, raw) { - // try a cache hit first - var cacheKey = raw ? templateString : templateString.trim(); - var hit = templateCache.get(cacheKey); - if (hit) { - return hit; - } - - var frag = document.createDocumentFragment(); - var tagMatch = templateString.match(tagRE$1); - var entityMatch = entityRE.test(templateString); - var commentMatch = commentRE.test(templateString); - - if (!tagMatch && !entityMatch && !commentMatch) { - // text only, return a single text node. - frag.appendChild(document.createTextNode(templateString)); - } else { - var tag = tagMatch && tagMatch[1]; - var wrap = map[tag] || map.efault; - var depth = wrap[0]; - var prefix = wrap[1]; - var suffix = wrap[2]; - var node = document.createElement('div'); - - node.innerHTML = prefix + templateString + suffix; - while (depth--) { - node = node.lastChild; - } - - var child; - /* eslint-disable no-cond-assign */ - while (child = node.firstChild) { - /* eslint-enable no-cond-assign */ - frag.appendChild(child); +/** + * Normalize raw function directives into object format. + */ +function normalizeDirectives (options) { + var dirs = options.directives; + if (dirs) { + for (var key in dirs) { + var def = dirs[key]; + if (typeof def === 'function') { + dirs[key] = { bind: def, update: def }; } } - if (!raw) { - trimNode(frag); - } - templateCache.put(cacheKey, frag); - return frag; } +} - /** - * Convert a template node to a DocumentFragment. - * - * @param {Node} node - * @return {DocumentFragment} - */ - - function nodeToFragment(node) { - // if its a template tag and the browser supports it, - // its content is already a document fragment. However, iOS Safari has - // bug when using directly cloned template content with touch - // events and can cause crashes when the nodes are removed from DOM, so we - // have to treat template elements as string templates. (#2805) - /* istanbul ignore if */ - if (isRealTemplate(node)) { - return stringToFragment(node.innerHTML); - } - // script template - if (node.tagName === 'SCRIPT') { - return stringToFragment(node.textContent); - } - // normal node, clone it to avoid mutating the original - var clonedNode = cloneNode(node); - var frag = document.createDocumentFragment(); - var child; - /* eslint-disable no-cond-assign */ - while (child = clonedNode.firstChild) { - /* eslint-enable no-cond-assign */ - frag.appendChild(child); +/** + * Merge two option objects into a new one. + * Core utility used in both instantiation and inheritance. + */ +function mergeOptions ( + parent, + child, + vm +) { + normalizeComponents(child); + normalizeProps(child); + normalizeDirectives(child); + var extendsFrom = child.extends; + if (extendsFrom) { + parent = typeof extendsFrom === 'function' + ? mergeOptions(parent, extendsFrom.options, vm) + : mergeOptions(parent, extendsFrom, vm); + } + if (child.mixins) { + for (var i = 0, l = child.mixins.length; i < l; i++) { + var mixin = child.mixins[i]; + if (mixin.prototype instanceof Vue$3) { + mixin = mixin.options; + } + parent = mergeOptions(parent, mixin, vm); + } + } + var options = {}; + var key; + for (key in parent) { + mergeField(key); + } + for (key in child) { + if (!hasOwn(parent, key)) { + mergeField(key); } - trimNode(frag); - return frag; } - - // Test for the presence of the Safari template cloning bug - // https://bugs.webkit.org/showug.cgi?id=137755 - var hasBrokenTemplate = (function () { - /* istanbul ignore else */ - if (inBrowser) { - var a = document.createElement('div'); - a.innerHTML = '<template>1</template>'; - return !a.cloneNode(true).firstChild.innerHTML; - } else { - return false; - } - })(); - - // Test for IE10/11 textarea placeholder clone bug - var hasTextareaCloneBug = (function () { - /* istanbul ignore else */ - if (inBrowser) { - var t = document.createElement('textarea'); - t.placeholder = 't'; - return t.cloneNode(true).value === 't'; - } else { - return false; - } - })(); - - /** - * 1. Deal with Safari cloning nested <template> bug by - * manually cloning all template instances. - * 2. Deal with IE10/11 textarea placeholder bug by setting - * the correct value after cloning. - * - * @param {Element|DocumentFragment} node - * @return {Element|DocumentFragment} - */ - - function cloneNode(node) { - /* istanbul ignore if */ - if (!node.querySelectorAll) { - return node.cloneNode(); - } - var res = node.cloneNode(true); - var i, original, cloned; - /* istanbul ignore if */ - if (hasBrokenTemplate) { - var tempClone = res; - if (isRealTemplate(node)) { - node = node.content; - tempClone = res.content; - } - original = node.querySelectorAll('template'); - if (original.length) { - cloned = tempClone.querySelectorAll('template'); - i = cloned.length; - while (i--) { - cloned[i].parentNode.replaceChild(cloneNode(original[i]), cloned[i]); - } - } - } - /* istanbul ignore if */ - if (hasTextareaCloneBug) { - if (node.tagName === 'TEXTAREA') { - res.value = node.value; - } else { - original = node.querySelectorAll('textarea'); - if (original.length) { - cloned = res.querySelectorAll('textarea'); - i = cloned.length; - while (i--) { - cloned[i].value = original[i].value; - } - } - } - } - return res; + function mergeField (key) { + var strat = strats[key] || defaultStrat; + options[key] = strat(parent[key], child[key], vm, key); } + return options +} - /** - * Process the template option and normalizes it into a - * a DocumentFragment that can be used as a partial or a - * instance template. - * - * @param {*} template - * Possible values include: - * - DocumentFragment object - * - Node object of type Template - * - id selector: '#some-template-id' - * - template string: '<div><span>{{msg}}</span></div>' - * @param {Boolean} shouldClone - * @param {Boolean} raw - * inline HTML interpolation. Do not check for id - * selector and keep whitespace in the string. - * @return {DocumentFragment|undefined} - */ - - function parseTemplate(template, shouldClone, raw) { - var node, frag; - - // if the template is already a document fragment, - // do nothing - if (isFragment(template)) { - trimNode(template); - return shouldClone ? cloneNode(template) : template; - } - - if (typeof template === 'string') { - // id selector - if (!raw && template.charAt(0) === '#') { - // id selector can be cached too - frag = idSelectorCache.get(template); - if (!frag) { - node = document.getElementById(template.slice(1)); - if (node) { - frag = nodeToFragment(node); - // save selector to cache - idSelectorCache.put(template, frag); - } - } - } else { - // normal string template - frag = stringToFragment(template, raw); - } - } else if (template.nodeType) { - // a direct node - frag = nodeToFragment(template); - } - - return frag && shouldClone ? cloneNode(frag) : frag; +/** + * Resolve an asset. + * This function is used because child instances need access + * to assets defined in its ancestor chain. + */ +function resolveAsset ( + options, + type, + id, + warnMissing +) { + /* istanbul ignore if */ + if (typeof id !== 'string') { + return } - -var template = Object.freeze({ - cloneNode: cloneNode, - parseTemplate: parseTemplate - }); - - var html = { - - bind: function bind() { - // a comment node means this is a binding for - // {{{ inline unescaped html }}} - if (this.el.nodeType === 8) { - // hold nodes - this.nodes = []; - // replace the placeholder with proper anchor - this.anchor = createAnchor('v-html'); - replace(this.el, this.anchor); - } - }, - - update: function update(value) { - value = _toString(value); - if (this.nodes) { - this.swap(value); - } else { - this.el.innerHTML = value; - } - }, - - swap: function swap(value) { - // remove old nodes - var i = this.nodes.length; - while (i--) { - remove(this.nodes[i]); - } - // convert new value to a fragment - // do not attempt to retrieve from id selector - var frag = parseTemplate(value, true, true); - // save a reference to these nodes so we can remove later - this.nodes = toArray(frag.childNodes); - before(frag, this.anchor); - } - }; - - /** - * Abstraction for a partially-compiled fragment. - * Can optionally compile content with a child scope. - * - * @param {Function} linker - * @param {Vue} vm - * @param {DocumentFragment} frag - * @param {Vue} [host] - * @param {Object} [scope] - * @param {Fragment} [parentFrag] - */ - function Fragment(linker, vm, frag, host, scope, parentFrag) { - this.children = []; - this.childFrags = []; - this.vm = vm; - this.scope = scope; - this.inserted = false; - this.parentFrag = parentFrag; - if (parentFrag) { - parentFrag.childFrags.push(this); - } - this.unlink = linker(vm, frag, host, scope, this); - var single = this.single = frag.childNodes.length === 1 && - // do not go single mode if the only node is an anchor - !frag.childNodes[0].__v_anchor; - if (single) { - this.node = frag.childNodes[0]; - this.before = singleBefore; - this.remove = singleRemove; - } else { - this.node = createAnchor('fragment-start'); - this.end = createAnchor('fragment-end'); - this.frag = frag; - prepend(this.node, frag); - frag.appendChild(this.end); - this.before = multiBefore; - this.remove = multiRemove; - } - this.node.__v_frag = this; + var assets = options[type]; + var res = assets[id] || + // camelCase ID + assets[camelize(id)] || + // Pascal Case ID + assets[capitalize(camelize(id))]; + if ("development" !== 'production' && warnMissing && !res) { + warn( + 'Failed to resolve ' + type.slice(0, -1) + ': ' + id, + options + ); + } + return res +} + +/* */ + +function validateProp ( + key, + propOptions, + propsData, + vm +) { + var prop = propOptions[key]; + var absent = !hasOwn(propsData, key); + var value = propsData[key]; + // handle boolean props + if (isBooleanType(prop.type)) { + if (absent && !hasOwn(prop, 'default')) { + value = false; + } else if (value === '' || value === hyphenate(key)) { + value = true; + } + } + // check default value + if (value === undefined) { + value = getPropDefaultValue(vm, prop, key); + // since the default value is a fresh copy, + // make sure to observe it. + var prevShouldConvert = observerState.shouldConvert; + observerState.shouldConvert = true; + observe(value); + observerState.shouldConvert = prevShouldConvert; + } + { + assertProp(prop, key, value, vm, absent); + } + return value +} + +/** + * Get the default value of a prop. + */ +function getPropDefaultValue (vm, prop, name) { + // no default, return undefined + if (!hasOwn(prop, 'default')) { + return undefined + } + var def = prop.default; + // warn against non-factory defaults for Object & Array + if (isObject(def)) { + "development" !== 'production' && warn( + 'Invalid default value for prop "' + name + '": ' + + 'Props with type Object/Array must use a factory function ' + + 'to return the default value.', + vm + ); + } + // call factory function for non-Function types + return typeof def === 'function' && prop.type !== Function + ? def.call(vm) + : def +} + +/** + * Assert whether a prop is valid. + */ +function assertProp ( + prop, + name, + value, + vm, + absent +) { + if (prop.required && absent) { + warn( + 'Missing required prop: "' + name + '"', + vm + ); + return + } + if (value == null && !prop.required) { + return + } + var type = prop.type; + var valid = !type || type === true; + var expectedTypes = []; + if (type) { + if (!Array.isArray(type)) { + type = [type]; + } + for (var i = 0; i < type.length && !valid; i++) { + var assertedType = assertType(value, type[i]); + expectedTypes.push(assertedType.expectedType); + valid = assertedType.valid; + } + } + if (!valid) { + warn( + 'Invalid prop: type check failed for prop "' + name + '".' + + ' Expected ' + expectedTypes.map(capitalize).join(', ') + + ', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.', + vm + ); + return + } + var validator = prop.validator; + if (validator) { + if (!validator(value)) { + warn( + 'Invalid prop: custom validator check failed for prop "' + name + '".', + vm + ); + } + } +} + +/** + * Assert the type of a value + */ +function assertType (value, type) { + var valid; + var expectedType = getType(type); + if (expectedType === 'String') { + valid = typeof value === (expectedType = 'string'); + } else if (expectedType === 'Number') { + valid = typeof value === (expectedType = 'number'); + } else if (expectedType === 'Boolean') { + valid = typeof value === (expectedType = 'boolean'); + } else if (expectedType === 'Function') { + valid = typeof value === (expectedType = 'function'); + } else if (expectedType === 'Object') { + valid = isPlainObject(value); + } else if (expectedType === 'Array') { + valid = Array.isArray(value); + } else { + valid = value instanceof type; } - - /** - * Call attach/detach for all components contained within - * this fragment. Also do so recursively for all child - * fragments. - * - * @param {Function} hook - */ - - Fragment.prototype.callHook = function (hook) { - var i, l; - for (i = 0, l = this.childFrags.length; i < l; i++) { - this.childFrags[i].callHook(hook); - } - for (i = 0, l = this.children.length; i < l; i++) { - hook(this.children[i]); - } - }; - - /** - * Insert fragment before target, single node version - * - * @param {Node} target - * @param {Boolean} withTransition - */ - - function singleBefore(target, withTransition) { - this.inserted = true; - var method = withTransition !== false ? beforeWithTransition : before; - method(this.node, target, this.vm); - if (inDoc(this.node)) { - this.callHook(attach); - } + return { + valid: valid, + expectedType: expectedType } +} - /** - * Remove fragment, single node version - */ +/** + * Use function string name to check built-in types, + * because a simple equality check will fail when running + * across different vms / iframes. + */ +function getType (fn) { + var match = fn && fn.toString().match(/^\s*function (\w+)/); + return match && match[1] +} - function singleRemove() { - this.inserted = false; - var shouldCallRemove = inDoc(this.node); - var self = this; - this.beforeRemove(); - removeWithTransition(this.node, this.vm, function () { - if (shouldCallRemove) { - self.callHook(detach); - } - self.destroy(); - }); +function isBooleanType (fn) { + if (!Array.isArray(fn)) { + return getType(fn) === 'Boolean' } - - /** - * Insert fragment before target, multi-nodes version - * - * @param {Node} target - * @param {Boolean} withTransition - */ - - function multiBefore(target, withTransition) { - this.inserted = true; - var vm = this.vm; - var method = withTransition !== false ? beforeWithTransition : before; - mapNodeRange(this.node, this.end, function (node) { - method(node, target, vm); - }); - if (inDoc(this.node)) { - this.callHook(attach); + for (var i = 0, len = fn.length; i < len; i++) { + if (getType(fn[i]) === 'Boolean') { + return true } } - - /** - * Remove fragment, multi-nodes version - */ - - function multiRemove() { - this.inserted = false; - var self = this; - var shouldCallRemove = inDoc(this.node); - this.beforeRemove(); - removeNodeRange(this.node, this.end, this.vm, this.frag, function () { - if (shouldCallRemove) { - self.callHook(detach); - } - self.destroy(); - }); - } - - /** - * Prepare the fragment for removal. - */ - - Fragment.prototype.beforeRemove = function () { - var i, l; - for (i = 0, l = this.childFrags.length; i < l; i++) { - // call the same method recursively on child - // fragments, depth-first - this.childFrags[i].beforeRemove(false); - } - for (i = 0, l = this.children.length; i < l; i++) { - // Call destroy for all contained instances, - // with remove:false and defer:true. - // Defer is necessary because we need to - // keep the children to call detach hooks - // on them. - this.children[i].$destroy(false, true); - } - var dirs = this.unlink.dirs; - for (i = 0, l = dirs.length; i < l; i++) { - // disable the watchers on all the directives - // so that the rendered content stays the same - // during removal. - dirs[i]._watcher && dirs[i]._watcher.teardown(); + /* istanbul ignore next */ + return false +} + + + +var util = Object.freeze({ + defineReactive: defineReactive$$1, + _toString: _toString, + toNumber: toNumber, + makeMap: makeMap, + isBuiltInTag: isBuiltInTag, + remove: remove$1, + hasOwn: hasOwn, + isPrimitive: isPrimitive, + cached: cached, + camelize: camelize, + capitalize: capitalize, + hyphenate: hyphenate, + bind: bind$1, + toArray: toArray, + extend: extend, + isObject: isObject, + isPlainObject: isPlainObject, + toObject: toObject, + noop: noop, + no: no, + genStaticKeys: genStaticKeys, + looseEqual: looseEqual, + looseIndexOf: looseIndexOf, + isReserved: isReserved, + def: def, + parsePath: parsePath, + hasProto: hasProto, + inBrowser: inBrowser, + UA: UA, + isIE: isIE, + isIE9: isIE9, + isEdge: isEdge, + isAndroid: isAndroid, + isIOS: isIOS, + devtools: devtools, + nextTick: nextTick, + get _Set () { return _Set; }, + mergeOptions: mergeOptions, + resolveAsset: resolveAsset, + get warn () { return warn; }, + get formatComponentName () { return formatComponentName; }, + validateProp: validateProp +}); + +/* */ + +function initUse (Vue) { + Vue.use = function (plugin) { + /* istanbul ignore if */ + if (plugin.installed) { + return } + // additional parameters + var args = toArray(arguments, 1); + args.unshift(this); + if (typeof plugin.install === 'function') { + plugin.install.apply(plugin, args); + } else { + plugin.apply(null, args); + } + plugin.installed = true; + return this }; +} - /** - * Destroy the fragment. - */ +/* */ - Fragment.prototype.destroy = function () { - if (this.parentFrag) { - this.parentFrag.childFrags.$remove(this); - } - this.node.__v_frag = null; - this.unlink(); +function initMixin$1 (Vue) { + Vue.mixin = function (mixin) { + Vue.options = mergeOptions(Vue.options, mixin); }; +} - /** - * Call attach hook for a Vue instance. - * - * @param {Vue} child - */ - - function attach(child) { - if (!child._isAttached && inDoc(child.$el)) { - child._callHook('attached'); - } - } +/* */ +function initExtend (Vue) { /** - * Call detach hook for a Vue instance. - * - * @param {Vue} child + * Each instance constructor, including Vue, has a unique + * cid. This enables us to create wrapped "child + * constructors" for prototypal inheritance and cache them. */ - - function detach(child) { - if (child._isAttached && !inDoc(child.$el)) { - child._callHook('detached'); - } - } - - var linkerCache = new Cache(5000); + Vue.cid = 0; + var cid = 1; /** - * A factory that can be used to create instances of a - * fragment. Caches the compiled linker if possible. - * - * @param {Vue} vm - * @param {Element|String} el + * Class inheritance */ - function FragmentFactory(vm, el) { - this.vm = vm; - var template; - var isString = typeof el === 'string'; - if (isString || isTemplate(el) && !el.hasAttribute('v-if')) { - template = parseTemplate(el, true); - } else { - template = document.createDocumentFragment(); - template.appendChild(el); - } - this.template = template; - // linker can be cached, but only for components - var linker; - var cid = vm.constructor.cid; - if (cid > 0) { - var cacheId = cid + (isString ? el : getOuterHTML(el)); - linker = linkerCache.get(cacheId); - if (!linker) { - linker = compile(template, vm.$options, true); - linkerCache.put(cacheId, linker); + Vue.extend = function (extendOptions) { + extendOptions = extendOptions || {}; + var Super = this; + var isFirstExtend = Super.cid === 0; + if (isFirstExtend && extendOptions._Ctor) { + return extendOptions._Ctor + } + var name = extendOptions.name || Super.options.name; + { + if (!/^[a-zA-Z][\w-]*$/.test(name)) { + warn( + 'Invalid component name: "' + name + '". Component names ' + + 'can only contain alphanumeric characaters and the hyphen.' + ); + name = null; } - } else { - linker = compile(template, vm.$options, true); } - this.linker = linker; - } - - /** - * Create a fragment instance with given host and scope. - * - * @param {Vue} host - * @param {Object} scope - * @param {Fragment} parentFrag - */ - - FragmentFactory.prototype.create = function (host, scope, parentFrag) { - var frag = cloneNode(this.template); - return new Fragment(this.linker, this.vm, frag, host, scope, parentFrag); + var Sub = function VueComponent (options) { + this._init(options); + }; + Sub.prototype = Object.create(Super.prototype); + Sub.prototype.constructor = Sub; + Sub.cid = cid++; + Sub.options = mergeOptions( + Super.options, + extendOptions + ); + Sub['super'] = Super; + // allow further extension + Sub.extend = Super.extend; + // create asset registers, so extended classes + // can have their private assets too. + config._assetTypes.forEach(function (type) { + Sub[type] = Super[type]; + }); + // enable recursive self-lookup + if (name) { + Sub.options.components[name] = Sub; + } + // keep a reference to the super options at extension time. + // later at instantiation we can check if Super's options have + // been updated. + Sub.superOptions = Super.options; + Sub.extendOptions = extendOptions; + // cache constructor + if (isFirstExtend) { + extendOptions._Ctor = Sub; + } + return Sub }; +} - var ON = 700; - var MODEL = 800; - var BIND = 850; - var TRANSITION = 1100; - var EL = 1500; - var COMPONENT = 1500; - var PARTIAL = 1750; - var IF = 2100; - var FOR = 2200; - var SLOT = 2300; - - var uid$3 = 0; - - var vFor = { - - priority: FOR, - terminal: true, - - params: ['track-by', 'stagger', 'enter-stagger', 'leave-stagger'], - - bind: function bind() { - // support "item in/of items" syntax - var inMatch = this.expression.match(/(.*) (?:in|of) (.*)/); - if (inMatch) { - var itMatch = inMatch[1].match(/\((.*),(.*)\)/); - if (itMatch) { - this.iterator = itMatch[1].trim(); - this.alias = itMatch[2].trim(); - } else { - this.alias = inMatch[1].trim(); - } - this.expression = inMatch[2]; - } - - if (!this.alias) { - 'development' !== 'production' && warn('Invalid v-for expression "' + this.descriptor.raw + '": ' + 'alias is required.', this.vm); - return; - } - - // uid as a cache identifier - this.id = '__v-for__' + ++uid$3; - - // check if this is an option list, - // so that we know if we need to update the <select>'s - // v-model when the option list has changed. - // because v-model has a lower priority than v-for, - // the v-model is not bound here yet, so we have to - // retrive it in the actual updateModel() function. - var tag = this.el.tagName; - this.isOption = (tag === 'OPTION' || tag === 'OPTGROUP') && this.el.parentNode.tagName === 'SELECT'; - - // setup anchor nodes - this.start = createAnchor('v-for-start'); - this.end = createAnchor('v-for-end'); - replace(this.el, this.end); - before(this.start, this.end); - - // cache - this.cache = Object.create(null); - - // fragment factory - this.factory = new FragmentFactory(this.vm, this.el); - }, - - update: function update(data) { - this.diff(data); - this.updateRef(); - this.updateModel(); - }, - - /** - * Diff, based on new data and old data, determine the - * minimum amount of DOM manipulations needed to make the - * DOM reflect the new data Array. - * - * The algorithm diffs the new data Array by storing a - * hidden reference to an owner vm instance on previously - * seen data. This allows us to achieve O(n) which is - * better than a levenshtein distance based algorithm, - * which is O(m * n). - * - * @param {Array} data - */ - - diff: function diff(data) { - // check if the Array was converted from an Object - var item = data[0]; - var convertedFromObject = this.fromObject = isObject(item) && hasOwn(item, '$key') && hasOwn(item, '$value'); - - var trackByKey = this.params.trackBy; - var oldFrags = this.frags; - var frags = this.frags = new Array(data.length); - var alias = this.alias; - var iterator = this.iterator; - var start = this.start; - var end = this.end; - var inDocument = inDoc(start); - var init = !oldFrags; - var i, l, frag, key, value, primitive; - - // First pass, go through the new Array and fill up - // the new frags array. If a piece of data has a cached - // instance for it, we reuse it. Otherwise build a new - // instance. - for (i = 0, l = data.length; i < l; i++) { - item = data[i]; - key = convertedFromObject ? item.$key : null; - value = convertedFromObject ? item.$value : item; - primitive = !isObject(value); - frag = !init && this.getCachedFrag(value, i, key); - if (frag) { - // reusable fragment - frag.reused = true; - // update $index - frag.scope.$index = i; - // update $key - if (key) { - frag.scope.$key = key; - } - // update iterator - if (iterator) { - frag.scope[iterator] = key !== null ? key : i; - } - // update data for track-by, object repeat & - // primitive values. - if (trackByKey || convertedFromObject || primitive) { - withoutConversion(function () { - frag.scope[alias] = value; - }); - } - } else { - // new isntance - frag = this.create(value, alias, i, key); - frag.fresh = !init; - } - frags[i] = frag; - if (init) { - frag.before(end); - } - } - - // we're done for the initial render. - if (init) { - return; - } - - // Second pass, go through the old fragments and - // destroy those who are not reused (and remove them - // from cache) - var removalIndex = 0; - var totalRemoved = oldFrags.length - frags.length; - // when removing a large number of fragments, watcher removal - // turns out to be a perf bottleneck, so we batch the watcher - // removals into a single filter call! - this.vm._vForRemoving = true; - for (i = 0, l = oldFrags.length; i < l; i++) { - frag = oldFrags[i]; - if (!frag.reused) { - this.deleteCachedFrag(frag); - this.remove(frag, removalIndex++, totalRemoved, inDocument); - } - } - this.vm._vForRemoving = false; - if (removalIndex) { - this.vm._watchers = this.vm._watchers.filter(function (w) { - return w.active; - }); - } - - // Final pass, move/insert new fragments into the - // right place. - var targetPrev, prevEl, currentPrev; - var insertionIndex = 0; - for (i = 0, l = frags.length; i < l; i++) { - frag = frags[i]; - // this is the frag that we should be after - targetPrev = frags[i - 1]; - prevEl = targetPrev ? targetPrev.staggerCb ? targetPrev.staggerAnchor : targetPrev.end || targetPrev.node : start; - if (frag.reused && !frag.staggerCb) { - currentPrev = findPrevFrag(frag, start, this.id); - if (currentPrev !== targetPrev && (!currentPrev || - // optimization for moving a single item. - // thanks to suggestions by @livoras in #1807 - findPrevFrag(currentPrev, start, this.id) !== targetPrev)) { - this.move(frag, prevEl); - } - } else { - // new instance, or still in stagger. - // insert with updated stagger index. - this.insert(frag, insertionIndex++, prevEl, inDocument); - } - frag.reused = frag.fresh = false; - } - }, - - /** - * Create a new fragment instance. - * - * @param {*} value - * @param {String} alias - * @param {Number} index - * @param {String} [key] - * @return {Fragment} - */ - - create: function create(value, alias, index, key) { - var host = this._host; - // create iteration scope - var parentScope = this._scope || this.vm; - var scope = Object.create(parentScope); - // ref holder for the scope - scope.$refs = Object.create(parentScope.$refs); - scope.$els = Object.create(parentScope.$els); - // make sure point $parent to parent scope - scope.$parent = parentScope; - // for two-way binding on alias - scope.$forContext = this; - // define scope properties - // important: define the scope alias without forced conversion - // so that frozen data structures remain non-reactive. - withoutConversion(function () { - defineReactive(scope, alias, value); - }); - defineReactive(scope, '$index', index); - if (key) { - defineReactive(scope, '$key', key); - } else if (scope.$key) { - // avoid accidental fallback - def(scope, '$key', null); - } - if (this.iterator) { - defineReactive(scope, this.iterator, key !== null ? key : index); - } - var frag = this.factory.create(host, scope, this._frag); - frag.forId = this.id; - this.cacheFrag(value, frag, index, key); - return frag; - }, - - /** - * Update the v-ref on owner vm. - */ - - updateRef: function updateRef() { - var ref = this.descriptor.ref; - if (!ref) return; - var hash = (this._scope || this.vm).$refs; - var refs; - if (!this.fromObject) { - refs = this.frags.map(findVmFromFrag); - } else { - refs = {}; - this.frags.forEach(function (frag) { - refs[frag.scope.$key] = findVmFromFrag(frag); - }); - } - hash[ref] = refs; - }, - - /** - * For option lists, update the containing v-model on - * parent <select>. - */ - - updateModel: function updateModel() { - if (this.isOption) { - var parent = this.start.parentNode; - var model = parent && parent.__v_model; - if (model) { - model.forceUpdate(); - } - } - }, +/* */ - /** - * Insert a fragment. Handles staggering. - * - * @param {Fragment} frag - * @param {Number} index - * @param {Node} prevEl - * @param {Boolean} inDocument - */ - - insert: function insert(frag, index, prevEl, inDocument) { - if (frag.staggerCb) { - frag.staggerCb.cancel(); - frag.staggerCb = null; - } - var staggerAmount = this.getStagger(frag, index, null, 'enter'); - if (inDocument && staggerAmount) { - // create an anchor and insert it synchronously, - // so that we can resolve the correct order without - // worrying about some elements not inserted yet - var anchor = frag.staggerAnchor; - if (!anchor) { - anchor = frag.staggerAnchor = createAnchor('stagger-anchor'); - anchor.__v_frag = frag; - } - after(anchor, prevEl); - var op = frag.staggerCb = cancellable(function () { - frag.staggerCb = null; - frag.before(anchor); - remove(anchor); - }); - setTimeout(op, staggerAmount); +function initAssetRegisters (Vue) { + /** + * Create asset registration methods. + */ + config._assetTypes.forEach(function (type) { + Vue[type] = function ( + id, + definition + ) { + if (!definition) { + return this.options[type + 's'][id] } else { - var target = prevEl.nextSibling; /* istanbul ignore if */ - if (!target) { - // reset end anchor position in case the position was messed up - // by an external drag-n-drop library. - after(this.end, prevEl); - target = this.end; - } - frag.before(target); - } - }, - - /** - * Remove a fragment. Handles staggering. - * - * @param {Fragment} frag - * @param {Number} index - * @param {Number} total - * @param {Boolean} inDocument - */ - - remove: function remove(frag, index, total, inDocument) { - if (frag.staggerCb) { - frag.staggerCb.cancel(); - frag.staggerCb = null; - // it's not possible for the same frag to be removed - // twice, so if we have a pending stagger callback, - // it means this frag is queued for enter but removed - // before its transition started. Since it is already - // destroyed, we can just leave it in detached state. - return; - } - var staggerAmount = this.getStagger(frag, index, total, 'leave'); - if (inDocument && staggerAmount) { - var op = frag.staggerCb = cancellable(function () { - frag.staggerCb = null; - frag.remove(); - }); - setTimeout(op, staggerAmount); - } else { - frag.remove(); - } - }, - - /** - * Move a fragment to a new position. - * Force no transition. - * - * @param {Fragment} frag - * @param {Node} prevEl - */ - - move: function move(frag, prevEl) { - // fix a common issue with Sortable: - // if prevEl doesn't have nextSibling, this means it's - // been dragged after the end anchor. Just re-position - // the end anchor to the end of the container. - /* istanbul ignore if */ - if (!prevEl.nextSibling) { - this.end.parentNode.appendChild(this.end); - } - frag.before(prevEl.nextSibling, false); - }, - - /** - * Cache a fragment using track-by or the object key. - * - * @param {*} value - * @param {Fragment} frag - * @param {Number} index - * @param {String} [key] - */ - - cacheFrag: function cacheFrag(value, frag, index, key) { - var trackByKey = this.params.trackBy; - var cache = this.cache; - var primitive = !isObject(value); - var id; - if (key || trackByKey || primitive) { - id = getTrackByKey(index, key, value, trackByKey); - if (!cache[id]) { - cache[id] = frag; - } else if (trackByKey !== '$index') { - 'development' !== 'production' && this.warnDuplicate(value); - } - } else { - id = this.id; - if (hasOwn(value, id)) { - if (value[id] === null) { - value[id] = frag; - } else { - 'development' !== 'production' && this.warnDuplicate(value); + { + if (type === 'component' && config.isReservedTag(id)) { + warn( + 'Do not use built-in or reserved HTML elements as component ' + + 'id: ' + id + ); } - } else if (Object.isExtensible(value)) { - def(value, id, frag); - } else if ('development' !== 'production') { - warn('Frozen v-for objects cannot be automatically tracked, make sure to ' + 'provide a track-by key.'); - } - } - frag.raw = value; - }, - - /** - * Get a cached fragment from the value/index/key - * - * @param {*} value - * @param {Number} index - * @param {String} key - * @return {Fragment} - */ - - getCachedFrag: function getCachedFrag(value, index, key) { - var trackByKey = this.params.trackBy; - var primitive = !isObject(value); - var frag; - if (key || trackByKey || primitive) { - var id = getTrackByKey(index, key, value, trackByKey); - frag = this.cache[id]; - } else { - frag = value[this.id]; - } - if (frag && (frag.reused || frag.fresh)) { - 'development' !== 'production' && this.warnDuplicate(value); - } - return frag; - }, - - /** - * Delete a fragment from cache. - * - * @param {Fragment} frag - */ - - deleteCachedFrag: function deleteCachedFrag(frag) { - var value = frag.raw; - var trackByKey = this.params.trackBy; - var scope = frag.scope; - var index = scope.$index; - // fix #948: avoid accidentally fall through to - // a parent repeater which happens to have $key. - var key = hasOwn(scope, '$key') && scope.$key; - var primitive = !isObject(value); - if (trackByKey || key || primitive) { - var id = getTrackByKey(index, key, value, trackByKey); - this.cache[id] = null; - } else { - value[this.id] = null; - frag.raw = null; - } - }, - - /** - * Get the stagger amount for an insertion/removal. - * - * @param {Fragment} frag - * @param {Number} index - * @param {Number} total - * @param {String} type - */ - - getStagger: function getStagger(frag, index, total, type) { - type = type + 'Stagger'; - var trans = frag.node.__v_trans; - var hooks = trans && trans.hooks; - var hook = hooks && (hooks[type] || hooks.stagger); - return hook ? hook.call(frag, index, total) : index * parseInt(this.params[type] || this.params.stagger, 10); - }, - - /** - * Pre-process the value before piping it through the - * filters. This is passed to and called by the watcher. - */ - - _preProcess: function _preProcess(value) { - // regardless of type, store the un-filtered raw value. - this.rawValue = value; - return value; - }, - - /** - * Post-process the value after it has been piped through - * the filters. This is passed to and called by the watcher. - * - * It is necessary for this to be called during the - * watcher's dependency collection phase because we want - * the v-for to update when the source Object is mutated. - */ - - _postProcess: function _postProcess(value) { - if (isArray(value)) { - return value; - } else if (isPlainObject(value)) { - // convert plain object to array. - var keys = Object.keys(value); - var i = keys.length; - var res = new Array(i); - var key; - while (i--) { - key = keys[i]; - res[i] = { - $key: key, - $value: value[key] - }; } - return res; - } else { - if (typeof value === 'number' && !isNaN(value)) { - value = range(value); + if (type === 'component' && isPlainObject(definition)) { + definition.name = definition.name || id; + definition = Vue.extend(definition); } - return value || []; - } - }, - - unbind: function unbind() { - if (this.descriptor.ref) { - (this._scope || this.vm).$refs[this.descriptor.ref] = null; - } - if (this.frags) { - var i = this.frags.length; - var frag; - while (i--) { - frag = this.frags[i]; - this.deleteCachedFrag(frag); - frag.destroy(); + if (type === 'directive' && typeof definition === 'function') { + definition = { bind: definition, update: definition }; } + this.options[type + 's'][id] = definition; + return definition } - } - }; - - /** - * Helper to find the previous element that is a fragment - * anchor. This is necessary because a destroyed frag's - * element could still be lingering in the DOM before its - * leaving transition finishes, but its inserted flag - * should have been set to false so we can skip them. - * - * If this is a block repeat, we want to make sure we only - * return frag that is bound to this v-for. (see #929) - * - * @param {Fragment} frag - * @param {Comment|Text} anchor - * @param {String} id - * @return {Fragment} - */ - - function findPrevFrag(frag, anchor, id) { - var el = frag.node.previousSibling; - /* istanbul ignore if */ - if (!el) return; - frag = el.__v_frag; - while ((!frag || frag.forId !== id || !frag.inserted) && el !== anchor) { - el = el.previousSibling; - /* istanbul ignore if */ - if (!el) return; - frag = el.__v_frag; - } - return frag; - } - - /** - * Find a vm from a fragment. - * - * @param {Fragment} frag - * @return {Vue|undefined} - */ - - function findVmFromFrag(frag) { - var node = frag.node; - // handle multi-node frag - if (frag.end) { - while (!node.__vue__ && node !== frag.end && node.nextSibling) { - node = node.nextSibling; + }; + }); +} + +var KeepAlive = { + name: 'keep-alive', + abstract: true, + created: function created () { + this.cache = Object.create(null); + }, + render: function render () { + var vnode = getFirstComponentChild(this.$slots.default); + if (vnode && vnode.componentOptions) { + var opts = vnode.componentOptions; + var key = vnode.key == null + // same constructor may get registered as different local components + // so cid alone is not enough (#3269) + ? opts.Ctor.cid + '::' + opts.tag + : vnode.key; + if (this.cache[key]) { + vnode.child = this.cache[key].child; + } else { + this.cache[key] = vnode; } + vnode.data.keepAlive = true; } - return node.__vue__; - } - - /** - * Create a range array from given number. - * - * @param {Number} n - * @return {Array} - */ + return vnode + }, + destroyed: function destroyed () { + var this$1 = this; - function range(n) { - var i = -1; - var ret = new Array(Math.floor(n)); - while (++i < n) { - ret[i] = i; + for (var key in this.cache) { + var vnode = this$1.cache[key]; + callHook(vnode.child, 'deactivated'); + vnode.child.$destroy(); } - return ret; } +}; - /** - * Get the track by key for an item. - * - * @param {Number} index - * @param {String} key - * @param {*} value - * @param {String} [trackByKey] - */ +var builtInComponents = { + KeepAlive: KeepAlive +}; - function getTrackByKey(index, key, value, trackByKey) { - return trackByKey ? trackByKey === '$index' ? index : trackByKey.charAt(0).match(/\w/) ? getPath(value, trackByKey) : value[trackByKey] : key || value; - } +/* */ - if ('development' !== 'production') { - vFor.warnDuplicate = function (value) { - warn('Duplicate value found in v-for="' + this.descriptor.raw + '": ' + JSON.stringify(value) + '. Use track-by="$index" if ' + 'you are expecting duplicate values.', this.vm); +function initGlobalAPI (Vue) { + // config + var configDef = {}; + configDef.get = function () { return config; }; + { + configDef.set = function () { + warn( + 'Do not replace the Vue.config object, set individual fields instead.' + ); }; } + Object.defineProperty(Vue, 'config', configDef); + Vue.util = util; + Vue.set = set; + Vue.delete = del; + Vue.nextTick = nextTick; - var vIf = { + Vue.options = Object.create(null); + config._assetTypes.forEach(function (type) { + Vue.options[type + 's'] = Object.create(null); + }); - priority: IF, - terminal: true, + extend(Vue.options.components, builtInComponents); - bind: function bind() { - var el = this.el; - if (!el.__vue__) { - // check else block - var next = el.nextElementSibling; - if (next && getAttr(next, 'v-else') !== null) { - remove(next); - this.elseEl = next; - } - // check main block - this.anchor = createAnchor('v-if'); - replace(el, this.anchor); - } else { - 'development' !== 'production' && warn('v-if="' + this.expression + '" cannot be ' + 'used on an instance root element.', this.vm); - this.invalid = true; - } - }, + initUse(Vue); + initMixin$1(Vue); + initExtend(Vue); + initAssetRegisters(Vue); +} - update: function update(value) { - if (this.invalid) return; - if (value) { - if (!this.frag) { - this.insert(); - } - } else { - this.remove(); - } - }, +initGlobalAPI(Vue$3); - insert: function insert() { - if (this.elseFrag) { - this.elseFrag.remove(); - this.elseFrag = null; - } - // lazy init factory - if (!this.factory) { - this.factory = new FragmentFactory(this.vm, this.el); - } - this.frag = this.factory.create(this._host, this._scope, this._frag); - this.frag.before(this.anchor); - }, +Object.defineProperty(Vue$3.prototype, '$isServer', { + get: function () { return config._isServer; } +}); - remove: function remove() { - if (this.frag) { - this.frag.remove(); - this.frag = null; - } - if (this.elseEl && !this.elseFrag) { - if (!this.elseFactory) { - this.elseFactory = new FragmentFactory(this.elseEl._context || this.vm, this.elseEl); - } - this.elseFrag = this.elseFactory.create(this._host, this._scope, this._frag); - this.elseFrag.before(this.anchor); - } - }, +Vue$3.version = '2.0.3'; - unbind: function unbind() { - if (this.frag) { - this.frag.destroy(); - } - if (this.elseFrag) { - this.elseFrag.destroy(); - } - } - }; +/* */ - var show = { +// attributes that should be using props for binding +var mustUseProp = makeMap('value,selected,checked,muted'); - bind: function bind() { - // check else block - var next = this.el.nextElementSibling; - if (next && getAttr(next, 'v-else') !== null) { - this.elseEl = next; - } - }, +var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck'); - update: function update(value) { - this.apply(this.el, value); - if (this.elseEl) { - this.apply(this.elseEl, !value); - } - }, +var isBooleanAttr = makeMap( + 'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' + + 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' + + 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' + + 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' + + 'required,reversed,scoped,seamless,selected,sortable,translate,' + + 'truespeed,typemustmatch,visible' +); - apply: function apply(el, value) { - if (inDoc(el)) { - applyTransition(el, value ? 1 : -1, toggle, this.vm); - } else { - toggle(); - } - function toggle() { - el.style.display = value ? '' : 'none'; - } - } - }; +var isAttr = makeMap( + 'accept,accept-charset,accesskey,action,align,alt,async,autocomplete,' + + 'autofocus,autoplay,autosave,bgcolor,border,buffered,challenge,charset,' + + 'checked,cite,class,code,codebase,color,cols,colspan,content,http-equiv,' + + 'name,contenteditable,contextmenu,controls,coords,data,datetime,default,' + + 'defer,dir,dirname,disabled,download,draggable,dropzone,enctype,method,for,' + + 'form,formaction,headers,<th>,height,hidden,high,href,hreflang,http-equiv,' + + 'icon,id,ismap,itemprop,keytype,kind,label,lang,language,list,loop,low,' + + 'manifest,max,maxlength,media,method,GET,POST,min,multiple,email,file,' + + 'muted,name,novalidate,open,optimum,pattern,ping,placeholder,poster,' + + 'preload,radiogroup,readonly,rel,required,reversed,rows,rowspan,sandbox,' + + 'scope,scoped,seamless,selected,shape,size,type,text,password,sizes,span,' + + 'spellcheck,src,srcdoc,srclang,srcset,start,step,style,summary,tabindex,' + + 'target,title,type,usemap,value,width,wrap' +); - var text$2 = { - - bind: function bind() { - var self = this; - var el = this.el; - var isRange = el.type === 'range'; - var lazy = this.params.lazy; - var number = this.params.number; - var debounce = this.params.debounce; - - // handle composition events. - // http://blog.evanyou.me/2014/01/03/composition-event/ - // skip this for Android because it handles composition - // events quite differently. Android doesn't trigger - // composition events for language input methods e.g. - // Chinese, but instead triggers them for spelling - // suggestions... (see Discussion/#162) - var composing = false; - if (!isAndroid && !isRange) { - this.on('compositionstart', function () { - composing = true; - }); - this.on('compositionend', function () { - composing = false; - // in IE11 the "compositionend" event fires AFTER - // the "input" event, so the input handler is blocked - // at the end... have to call it here. - // - // #1327: in lazy mode this is unecessary. - if (!lazy) { - self.listener(); - } - }); - } - // prevent messing with the input when user is typing, - // and force update on blur. - this.focused = false; - if (!isRange && !lazy) { - this.on('focus', function () { - self.focused = true; - }); - this.on('blur', function () { - self.focused = false; - // do not sync value after fragment removal (#2017) - if (!self._frag || self._frag.inserted) { - self.rawListener(); - } - }); - } - // Now attach the main listener - this.listener = this.rawListener = function () { - if (composing || !self._bound) { - return; - } - var val = number || isRange ? toNumber(el.value) : el.value; - self.set(val); - // force update on next tick to avoid lock & same value - // also only update when user is not typing - nextTick(function () { - if (self._bound && !self.focused) { - self.update(self._watcher.value); - } - }); - }; +var xlinkNS = 'http://www.w3.org/1999/xlink'; - // apply debounce - if (debounce) { - this.listener = _debounce(this.listener, debounce); - } - - // Support jQuery events, since jQuery.trigger() doesn't - // trigger native events in some cases and some plugins - // rely on $.trigger() - // - // We want to make sure if a listener is attached using - // jQuery, it is also removed with jQuery, that's why - // we do the check for each directive instance and - // store that check result on itself. This also allows - // easier test coverage control by unsetting the global - // jQuery variable in tests. - this.hasjQuery = typeof jQuery === 'function'; - if (this.hasjQuery) { - var method = jQuery.fn.on ? 'on' : 'bind'; - jQuery(el)[method]('change', this.rawListener); - if (!lazy) { - jQuery(el)[method]('input', this.listener); - } - } else { - this.on('change', this.rawListener); - if (!lazy) { - this.on('input', this.listener); - } - } +var isXlink = function (name) { + return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink' +}; - // IE9 doesn't fire input event on backspace/del/cut - if (!lazy && isIE9) { - this.on('cut', function () { - nextTick(self.listener); - }); - this.on('keyup', function (e) { - if (e.keyCode === 46 || e.keyCode === 8) { - self.listener(); - } - }); - } +var getXlinkProp = function (name) { + return isXlink(name) ? name.slice(6, name.length) : '' +}; - // set initial value if present - if (el.hasAttribute('value') || el.tagName === 'TEXTAREA' && el.value.trim()) { - this.afterBind = this.listener; - } - }, +var isFalsyAttrValue = function (val) { + return val == null || val === false +}; - update: function update(value) { - // #3029 only update when the value changes. This prevent - // browsers from overwriting values like selectionStart - value = _toString(value); - if (value !== this.el.value) this.el.value = value; - }, +/* */ - unbind: function unbind() { - var el = this.el; - if (this.hasjQuery) { - var method = jQuery.fn.off ? 'off' : 'unbind'; - jQuery(el)[method]('change', this.listener); - jQuery(el)[method]('input', this.listener); - } +function genClassForVnode (vnode) { + var data = vnode.data; + var parentNode = vnode; + var childNode = vnode; + while (childNode.child) { + childNode = childNode.child._vnode; + if (childNode.data) { + data = mergeClassData(childNode.data, data); } - }; - - var radio = { - - bind: function bind() { - var self = this; - var el = this.el; - - this.getValue = function () { - // value overwrite via v-bind:value - if (el.hasOwnProperty('_value')) { - return el._value; - } - var val = el.value; - if (self.params.number) { - val = toNumber(val); - } - return val; - }; - - this.listener = function () { - self.set(self.getValue()); - }; - this.on('change', this.listener); - - if (el.hasAttribute('checked')) { - this.afterBind = this.listener; - } - }, - - update: function update(value) { - this.el.checked = looseEqual(value, this.getValue()); + } + while ((parentNode = parentNode.parent)) { + if (parentNode.data) { + data = mergeClassData(data, parentNode.data); } - }; + } + return genClassFromData(data) +} - var select = { +function mergeClassData (child, parent) { + return { + staticClass: concat(child.staticClass, parent.staticClass), + class: child.class + ? [child.class, parent.class] + : parent.class + } +} - bind: function bind() { - var _this = this; +function genClassFromData (data) { + var dynamicClass = data.class; + var staticClass = data.staticClass; + if (staticClass || dynamicClass) { + return concat(staticClass, stringifyClass(dynamicClass)) + } + /* istanbul ignore next */ + return '' +} - var self = this; - var el = this.el; +function concat (a, b) { + return a ? b ? (a + ' ' + b) : a : (b || '') +} - // method to force update DOM using latest value. - this.forceUpdate = function () { - if (self._watcher) { - self.update(self._watcher.get()); +function stringifyClass (value) { + var res = ''; + if (!value) { + return res + } + if (typeof value === 'string') { + return value + } + if (Array.isArray(value)) { + var stringified; + for (var i = 0, l = value.length; i < l; i++) { + if (value[i]) { + if ((stringified = stringifyClass(value[i]))) { + res += stringified + ' '; } - }; - - // check if this is a multiple select - var multiple = this.multiple = el.hasAttribute('multiple'); - - // attach listener - this.listener = function () { - var value = getValue(el, multiple); - value = self.params.number ? isArray(value) ? value.map(toNumber) : toNumber(value) : value; - self.set(value); - }; - this.on('change', this.listener); - - // if has initial value, set afterBind - var initValue = getValue(el, multiple, true); - if (multiple && initValue.length || !multiple && initValue !== null) { - this.afterBind = this.listener; - } - - // All major browsers except Firefox resets - // selectedIndex with value -1 to 0 when the element - // is appended to a new parent, therefore we have to - // force a DOM update whenever that happens... - this.vm.$on('hook:attached', function () { - nextTick(_this.forceUpdate); - }); - if (!inDoc(el)) { - nextTick(this.forceUpdate); - } - }, - - update: function update(value) { - var el = this.el; - el.selectedIndex = -1; - var multi = this.multiple && isArray(value); - var options = el.options; - var i = options.length; - var op, val; - while (i--) { - op = options[i]; - val = op.hasOwnProperty('_value') ? op._value : op.value; - /* eslint-disable eqeqeq */ - op.selected = multi ? indexOf$1(value, val) > -1 : looseEqual(value, val); - /* eslint-enable eqeqeq */ } - }, - - unbind: function unbind() { - /* istanbul ignore next */ - this.vm.$off('hook:attached', this.forceUpdate); } - }; - - /** - * Get select value - * - * @param {SelectElement} el - * @param {Boolean} multi - * @param {Boolean} init - * @return {Array|*} - */ - - function getValue(el, multi, init) { - var res = multi ? [] : null; - var op, val, selected; - for (var i = 0, l = el.options.length; i < l; i++) { - op = el.options[i]; - selected = init ? op.hasAttribute('selected') : op.selected; - if (selected) { - val = op.hasOwnProperty('_value') ? op._value : op.value; - if (multi) { - res.push(val); - } else { - return val; - } - } + return res.slice(0, -1) + } + if (isObject(value)) { + for (var key in value) { + if (value[key]) { res += key + ' '; } } - return res; + return res.slice(0, -1) + } + /* istanbul ignore next */ + return res +} + +/* */ + +var namespaceMap = { + svg: 'http://www.w3.org/2000/svg', + math: 'http://www.w3.org/1998/Math/MathML' +}; + +var isHTMLTag = makeMap( + 'html,body,base,head,link,meta,style,title,' + + 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' + + 'div,dd,dl,dt,figcaption,figure,hr,img,li,main,ol,p,pre,ul,' + + 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' + + 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' + + 'embed,object,param,source,canvas,script,noscript,del,ins,' + + 'caption,col,colgroup,table,thead,tbody,td,th,tr,' + + 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' + + 'output,progress,select,textarea,' + + 'details,dialog,menu,menuitem,summary,' + + 'content,element,shadow,template' +); + +var isUnaryTag = makeMap( + 'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' + + 'link,meta,param,source,track,wbr', + true +); + +// Elements that you can, intentionally, leave open +// (and which close themselves) +var canBeLeftOpenTag = makeMap( + 'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source', + true +); + +// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3 +// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content +var isNonPhrasingTag = makeMap( + 'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' + + 'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' + + 'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' + + 'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' + + 'title,tr,track', + true +); + +// this map is intentionally selective, only covering SVG elements that may +// contain child elements. +var isSVG = makeMap( + 'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font,' + + 'font-face,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' + + 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view', + true +); + +var isPreTag = function (tag) { return tag === 'pre'; }; + +var isReservedTag = function (tag) { + return isHTMLTag(tag) || isSVG(tag) +}; + +function getTagNamespace (tag) { + if (isSVG(tag)) { + return 'svg' + } + // basic support for MathML + // note it doesn't support other MathML elements being component roots + if (tag === 'math') { + return 'math' + } +} + +var unknownElementCache = Object.create(null); +function isUnknownElement (tag) { + /* istanbul ignore if */ + if (!inBrowser) { + return true + } + if (isReservedTag(tag)) { + return false + } + tag = tag.toLowerCase(); + /* istanbul ignore if */ + if (unknownElementCache[tag] != null) { + return unknownElementCache[tag] + } + var el = document.createElement(tag); + if (tag.indexOf('-') > -1) { + // http://stackoverflow.com/a/28210364/1070244 + return (unknownElementCache[tag] = ( + el.constructor === window.HTMLUnknownElement || + el.constructor === window.HTMLElement + )) + } else { + return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString())) } +} - /** - * Native Array.indexOf uses strict equal, but in this - * case we need to match string/numbers with custom equal. - * - * @param {Array} arr - * @param {*} val - */ +/* */ - function indexOf$1(arr, val) { - var i = arr.length; - while (i--) { - if (looseEqual(arr[i], val)) { - return i; +/** + * Query an element selector if it's not an element already. + */ +function query (el) { + if (typeof el === 'string') { + var selector = el; + el = document.querySelector(el); + if (!el) { + "development" !== 'production' && warn( + 'Cannot find element: ' + selector + ); + return document.createElement('div') + } + } + return el +} + +/* */ + +function createElement$1 (tagName, vnode) { + var elm = document.createElement(tagName); + if (tagName !== 'select') { + return elm + } + if (vnode.data && vnode.data.attrs && 'multiple' in vnode.data.attrs) { + elm.setAttribute('multiple', 'multiple'); + } + return elm +} + +function createElementNS (namespace, tagName) { + return document.createElementNS(namespaceMap[namespace], tagName) +} + +function createTextNode (text) { + return document.createTextNode(text) +} + +function createComment (text) { + return document.createComment(text) +} + +function insertBefore (parentNode, newNode, referenceNode) { + parentNode.insertBefore(newNode, referenceNode); +} + +function removeChild (node, child) { + node.removeChild(child); +} + +function appendChild (node, child) { + node.appendChild(child); +} + +function parentNode (node) { + return node.parentNode +} + +function nextSibling (node) { + return node.nextSibling +} + +function tagName (node) { + return node.tagName +} + +function setTextContent (node, text) { + node.textContent = text; +} + +function childNodes (node) { + return node.childNodes +} + +function setAttribute (node, key, val) { + node.setAttribute(key, val); +} + + +var nodeOps = Object.freeze({ + createElement: createElement$1, + createElementNS: createElementNS, + createTextNode: createTextNode, + createComment: createComment, + insertBefore: insertBefore, + removeChild: removeChild, + appendChild: appendChild, + parentNode: parentNode, + nextSibling: nextSibling, + tagName: tagName, + setTextContent: setTextContent, + childNodes: childNodes, + setAttribute: setAttribute +}); + +/* */ + +var ref = { + create: function create (_, vnode) { + registerRef(vnode); + }, + update: function update (oldVnode, vnode) { + if (oldVnode.data.ref !== vnode.data.ref) { + registerRef(oldVnode, true); + registerRef(vnode); + } + }, + destroy: function destroy (vnode) { + registerRef(vnode, true); + } +}; + +function registerRef (vnode, isRemoval) { + var key = vnode.data.ref; + if (!key) { return } + + var vm = vnode.context; + var ref = vnode.child || vnode.elm; + var refs = vm.$refs; + if (isRemoval) { + if (Array.isArray(refs[key])) { + remove$1(refs[key], ref); + } else if (refs[key] === ref) { + refs[key] = undefined; + } + } else { + if (vnode.data.refInFor) { + if (Array.isArray(refs[key])) { + refs[key].push(ref); + } else { + refs[key] = [ref]; } + } else { + refs[key] = ref; } - return -1; } +} - var checkbox = { +/** + * Virtual DOM patching algorithm based on Snabbdom by + * Simon Friis Vindum (@paldepind) + * Licensed under the MIT License + * https://github.com/paldepind/snabbdom/blob/master/LICENSE + * + * modified by Evan You (@yyx990803) + * - bind: function bind() { - var self = this; - var el = this.el; +/* + * Not type-checking this because this file is perf-critical and the cost + * of making flow understand it is not worth it. + */ - this.getValue = function () { - return el.hasOwnProperty('_value') ? el._value : self.params.number ? toNumber(el.value) : el.value; - }; +var emptyNode = new VNode('', {}, []); - function getBooleanValue() { - var val = el.checked; - if (val && el.hasOwnProperty('_trueValue')) { - return el._trueValue; - } - if (!val && el.hasOwnProperty('_falseValue')) { - return el._falseValue; - } - return val; - } +var hooks$1 = ['create', 'update', 'remove', 'destroy']; - this.listener = function () { - var model = self._watcher.value; - if (isArray(model)) { - var val = self.getValue(); - if (el.checked) { - if (indexOf(model, val) < 0) { - model.push(val); - } - } else { - model.$remove(val); - } - } else { - self.set(getBooleanValue()); - } - }; +function isUndef (s) { + return s == null +} - this.on('change', this.listener); - if (el.hasAttribute('checked')) { - this.afterBind = this.listener; - } - }, +function isDef (s) { + return s != null +} - update: function update(value) { - var el = this.el; - if (isArray(value)) { - el.checked = indexOf(value, this.getValue()) > -1; - } else { - if (el.hasOwnProperty('_trueValue')) { - el.checked = looseEqual(value, el._trueValue); - } else { - el.checked = !!value; - } - } - } - }; +function sameVnode (vnode1, vnode2) { + return ( + vnode1.key === vnode2.key && + vnode1.tag === vnode2.tag && + vnode1.isComment === vnode2.isComment && + !vnode1.data === !vnode2.data + ) +} - var handlers = { - text: text$2, - radio: radio, - select: select, - checkbox: checkbox - }; +function createKeyToOldIdx (children, beginIdx, endIdx) { + var i, key; + var map = {}; + for (i = beginIdx; i <= endIdx; ++i) { + key = children[i].key; + if (isDef(key)) { map[key] = i; } + } + return map +} - var model = { - - priority: MODEL, - twoWay: true, - handlers: handlers, - params: ['lazy', 'number', 'debounce'], - - /** - * Possible elements: - * <select> - * <textarea> - * <input type="*"> - * - text - * - checkbox - * - radio - * - number - */ - - bind: function bind() { - // friendly warning... - this.checkFilters(); - if (this.hasRead && !this.hasWrite) { - 'development' !== 'production' && warn('It seems you are using a read-only filter with ' + 'v-model="' + this.descriptor.raw + '". ' + 'You might want to use a two-way filter to ensure correct behavior.', this.vm); - } - var el = this.el; - var tag = el.tagName; - var handler; - if (tag === 'INPUT') { - handler = handlers[el.type] || handlers.text; - } else if (tag === 'SELECT') { - handler = handlers.select; - } else if (tag === 'TEXTAREA') { - handler = handlers.text; - } else { - 'development' !== 'production' && warn('v-model does not support element type: ' + tag, this.vm); - return; - } - el.__v_model = this; - handler.bind.call(this); - this.update = handler.update; - this._unbind = handler.unbind; - }, +function createPatchFunction (backend) { + var i, j; + var cbs = {}; - /** - * Check read/write filter stats. - */ - - checkFilters: function checkFilters() { - var filters = this.filters; - if (!filters) return; - var i = filters.length; - while (i--) { - var filter = resolveAsset(this.vm.$options, 'filters', filters[i].name); - if (typeof filter === 'function' || filter.read) { - this.hasRead = true; - } - if (filter.write) { - this.hasWrite = true; - } - } - }, + var modules = backend.modules; + var nodeOps = backend.nodeOps; - unbind: function unbind() { - this.el.__v_model = null; - this._unbind && this._unbind(); + for (i = 0; i < hooks$1.length; ++i) { + cbs[hooks$1[i]] = []; + for (j = 0; j < modules.length; ++j) { + if (modules[j][hooks$1[i]] !== undefined) { cbs[hooks$1[i]].push(modules[j][hooks$1[i]]); } } - }; + } - // keyCode aliases - var keyCodes = { - esc: 27, - tab: 9, - enter: 13, - space: 32, - 'delete': [8, 46], - up: 38, - left: 37, - right: 39, - down: 40 - }; + function emptyNodeAt (elm) { + return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm) + } - function keyFilter(handler, keys) { - var codes = keys.map(function (key) { - var charCode = key.charCodeAt(0); - if (charCode > 47 && charCode < 58) { - return parseInt(key, 10); + function createRmCb (childElm, listeners) { + function remove$$1 () { + if (--remove$$1.listeners === 0) { + removeElement(childElm); } - if (key.length === 1) { - charCode = key.toUpperCase().charCodeAt(0); - if (charCode > 64 && charCode < 91) { - return charCode; - } - } - return keyCodes[key]; - }); - codes = [].concat.apply([], codes); - return function keyHandler(e) { - if (codes.indexOf(e.keyCode) > -1) { - return handler.call(this, e); - } - }; + } + remove$$1.listeners = listeners; + return remove$$1 } - function stopFilter(handler) { - return function stopHandler(e) { - e.stopPropagation(); - return handler.call(this, e); - }; + function removeElement (el) { + var parent = nodeOps.parentNode(el); + nodeOps.removeChild(parent, el); } - function preventFilter(handler) { - return function preventHandler(e) { - e.preventDefault(); - return handler.call(this, e); - }; + function createElm (vnode, insertedVnodeQueue, nested) { + var i; + var data = vnode.data; + vnode.isRootInsert = !nested; + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode); } + // after calling the init hook, if the vnode is a child component + // it should've created a child instance and mounted it. the child + // component also has set the placeholder vnode's elm. + // in that case we can just return the element and be done. + if (isDef(i = vnode.child)) { + initComponent(vnode, insertedVnodeQueue); + return vnode.elm + } + } + var children = vnode.children; + var tag = vnode.tag; + if (isDef(tag)) { + { + if ( + !vnode.ns && + !(config.ignoredElements && config.ignoredElements.indexOf(tag) > -1) && + config.isUnknownElement(tag) + ) { + warn( + 'Unknown custom element: <' + tag + '> - did you ' + + 'register the component correctly? For recursive components, ' + + 'make sure to provide the "name" option.', + vnode.context + ); + } + } + vnode.elm = vnode.ns + ? nodeOps.createElementNS(vnode.ns, tag) + : nodeOps.createElement(tag, vnode); + setScope(vnode); + createChildren(vnode, children, insertedVnodeQueue); + if (isDef(data)) { + invokeCreateHooks(vnode, insertedVnodeQueue); + } + } else if (vnode.isComment) { + vnode.elm = nodeOps.createComment(vnode.text); + } else { + vnode.elm = nodeOps.createTextNode(vnode.text); + } + return vnode.elm } - function selfFilter(handler) { - return function selfHandler(e) { - if (e.target === e.currentTarget) { - return handler.call(this, e); + function createChildren (vnode, children, insertedVnodeQueue) { + if (Array.isArray(children)) { + for (var i = 0; i < children.length; ++i) { + nodeOps.appendChild(vnode.elm, createElm(children[i], insertedVnodeQueue, true)); } - }; + } else if (isPrimitive(vnode.text)) { + nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(vnode.text)); + } } - var on$1 = { - - priority: ON, - acceptStatement: true, - keyCodes: keyCodes, - - bind: function bind() { - // deal with iframes - if (this.el.tagName === 'IFRAME' && this.arg !== 'load') { - var self = this; - this.iframeBind = function () { - on(self.el.contentWindow, self.arg, self.handler, self.modifiers.capture); - }; - this.on('load', this.iframeBind); - } - }, - - update: function update(handler) { - // stub a noop for v-on with no value, - // e.g. @mousedown.prevent - if (!this.descriptor.raw) { - handler = function () {}; - } - - if (typeof handler !== 'function') { - 'development' !== 'production' && warn('v-on:' + this.arg + '="' + this.expression + '" expects a function value, ' + 'got ' + handler, this.vm); - return; - } - - // apply modifiers - if (this.modifiers.stop) { - handler = stopFilter(handler); - } - if (this.modifiers.prevent) { - handler = preventFilter(handler); - } - if (this.modifiers.self) { - handler = selfFilter(handler); - } - // key filter - var keys = Object.keys(this.modifiers).filter(function (key) { - return key !== 'stop' && key !== 'prevent' && key !== 'self' && key !== 'capture'; - }); - if (keys.length) { - handler = keyFilter(handler, keys); - } - - this.reset(); - this.handler = handler; - - if (this.iframeBind) { - this.iframeBind(); - } else { - on(this.el, this.arg, this.handler, this.modifiers.capture); - } - }, - - reset: function reset() { - var el = this.iframeBind ? this.el.contentWindow : this.el; - if (this.handler) { - off(el, this.arg, this.handler); - } - }, - - unbind: function unbind() { - this.reset(); + function isPatchable (vnode) { + while (vnode.child) { + vnode = vnode.child._vnode; } - }; - - var prefixes = ['-webkit-', '-moz-', '-ms-']; - var camelPrefixes = ['Webkit', 'Moz', 'ms']; - var importantRE = /!important;?$/; - var propCache = Object.create(null); - - var testEl = null; - - var style = { - - deep: true, - - update: function update(value) { - if (typeof value === 'string') { - this.el.style.cssText = value; - } else if (isArray(value)) { - this.handleObject(value.reduce(extend, {})); - } else { - this.handleObject(value || {}); - } - }, - - handleObject: function handleObject(value) { - // cache object styles so that only changed props - // are actually updated. - var cache = this.cache || (this.cache = {}); - var name, val; - for (name in cache) { - if (!(name in value)) { - this.handleSingle(name, null); - delete cache[name]; - } - } - for (name in value) { - val = value[name]; - if (val !== cache[name]) { - cache[name] = val; - this.handleSingle(name, val); - } - } - }, + return isDef(vnode.tag) + } - handleSingle: function handleSingle(prop, value) { - prop = normalize(prop); - if (!prop) return; // unsupported prop - // cast possible numbers/booleans into strings - if (value != null) value += ''; - if (value) { - var isImportant = importantRE.test(value) ? 'important' : ''; - if (isImportant) { - /* istanbul ignore if */ - if ('development' !== 'production') { - warn('It\'s probably a bad idea to use !important with inline rules. ' + 'This feature will be deprecated in a future version of Vue.'); - } - value = value.replace(importantRE, '').trim(); - this.el.style.setProperty(prop.kebab, value, isImportant); - } else { - this.el.style[prop.camel] = value; - } - } else { - this.el.style[prop.camel] = ''; - } + function invokeCreateHooks (vnode, insertedVnodeQueue) { + for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) { + cbs.create[i$1](emptyNode, vnode); } - - }; - - /** - * Normalize a CSS property name. - * - cache result - * - auto prefix - * - camelCase -> dash-case - * - * @param {String} prop - * @return {String} - */ - - function normalize(prop) { - if (propCache[prop]) { - return propCache[prop]; + i = vnode.data.hook; // Reuse variable + if (isDef(i)) { + if (i.create) { i.create(emptyNode, vnode); } + if (i.insert) { insertedVnodeQueue.push(vnode); } } - var res = prefix(prop); - propCache[prop] = propCache[res] = res; - return res; } - /** - * Auto detect the appropriate prefix for a CSS property. - * https://gist.github.com/paulirish/523692 - * - * @param {String} prop - * @return {String} - */ - - function prefix(prop) { - prop = hyphenate(prop); - var camel = camelize(prop); - var upper = camel.charAt(0).toUpperCase() + camel.slice(1); - if (!testEl) { - testEl = document.createElement('div'); - } - var i = prefixes.length; - var prefixed; - if (camel !== 'filter' && camel in testEl.style) { - return { - kebab: prop, - camel: camel - }; + function initComponent (vnode, insertedVnodeQueue) { + if (vnode.data.pendingInsert) { + insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert); } - while (i--) { - prefixed = camelPrefixes[i] + upper; - if (prefixed in testEl.style) { - return { - kebab: prefixes[i] + prop, - camel: prefixed - }; - } - } - } - - // xlink - var xlinkNS = 'http://www.w3.org/1999/xlink'; - var xlinkRE = /^xlink:/; - - // check for attributes that prohibit interpolations - var disallowedInterpAttrRE = /^v-|^:|^@|^(?:is|transition|transition-mode|debounce|track-by|stagger|enter-stagger|leave-stagger)$/; - // these attributes should also set their corresponding properties - // because they only affect the initial state of the element - var attrWithPropsRE = /^(?:value|checked|selected|muted)$/; - // these attributes expect enumrated values of "true" or "false" - // but are not boolean attributes - var enumeratedAttrRE = /^(?:draggable|contenteditable|spellcheck)$/; - - // these attributes should set a hidden property for - // binding v-model to object values - var modelProps = { - value: '_value', - 'true-value': '_trueValue', - 'false-value': '_falseValue' - }; + vnode.elm = vnode.child.$el; + if (isPatchable(vnode)) { + invokeCreateHooks(vnode, insertedVnodeQueue); + setScope(vnode); + } else { + // empty component root. + // skip all element-related modules except for ref (#3455) + registerRef(vnode); + // make sure to invoke the insert hook + insertedVnodeQueue.push(vnode); + } + } - var bind$1 = { + // set scope id attribute for scoped CSS. + // this is implemented as a special case to avoid the overhead + // of going through the normal attribute patching process. + function setScope (vnode) { + var i; + if (isDef(i = vnode.context) && isDef(i = i.$options._scopeId)) { + nodeOps.setAttribute(vnode.elm, i, ''); + } + if (isDef(i = activeInstance) && + i !== vnode.context && + isDef(i = i.$options._scopeId)) { + nodeOps.setAttribute(vnode.elm, i, ''); + } + } - priority: BIND, + function addVnodes (parentElm, before, vnodes, startIdx, endIdx, insertedVnodeQueue) { + for (; startIdx <= endIdx; ++startIdx) { + nodeOps.insertBefore(parentElm, createElm(vnodes[startIdx], insertedVnodeQueue), before); + } + } - bind: function bind() { - var attr = this.arg; - var tag = this.el.tagName; - // should be deep watch on object mode - if (!attr) { - this.deep = true; + function invokeDestroyHook (vnode) { + var i, j; + var data = vnode.data; + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); } + for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); } + } + if (isDef(i = vnode.children)) { + for (j = 0; j < vnode.children.length; ++j) { + invokeDestroyHook(vnode.children[j]); } - // handle interpolation bindings - var descriptor = this.descriptor; - var tokens = descriptor.interp; - if (tokens) { - // handle interpolations with one-time tokens - if (descriptor.hasOneTime) { - this.expression = tokensToExp(tokens, this._scope || this.vm); - } - - // only allow binding on native attributes - if (disallowedInterpAttrRE.test(attr) || attr === 'name' && (tag === 'PARTIAL' || tag === 'SLOT')) { - 'development' !== 'production' && warn(attr + '="' + descriptor.raw + '": ' + 'attribute interpolation is not allowed in Vue.js ' + 'directives and special attributes.', this.vm); - this.el.removeAttribute(attr); - this.invalid = true; - } - - /* istanbul ignore if */ - if ('development' !== 'production') { - var raw = attr + '="' + descriptor.raw + '": '; - // warn src - if (attr === 'src') { - warn(raw + 'interpolation in "src" attribute will cause ' + 'a 404 request. Use v-bind:src instead.', this.vm); - } + } + } - // warn style - if (attr === 'style') { - warn(raw + 'interpolation in "style" attribute will cause ' + 'the attribute to be discarded in Internet Explorer. ' + 'Use v-bind:style instead.', this.vm); - } + function removeVnodes (parentElm, vnodes, startIdx, endIdx) { + for (; startIdx <= endIdx; ++startIdx) { + var ch = vnodes[startIdx]; + if (isDef(ch)) { + if (isDef(ch.tag)) { + removeAndInvokeRemoveHook(ch); + invokeDestroyHook(ch); + } else { // Text node + nodeOps.removeChild(parentElm, ch.elm); } } - }, + } + } - update: function update(value) { - if (this.invalid) { - return; - } - var attr = this.arg; - if (this.arg) { - this.handleSingle(attr, value); + function removeAndInvokeRemoveHook (vnode, rm) { + if (rm || isDef(vnode.data)) { + var listeners = cbs.remove.length + 1; + if (!rm) { + // directly removing + rm = createRmCb(vnode.elm, listeners); } else { - this.handleObject(value || {}); + // we have a recursively passed down rm callback + // increase the listeners count + rm.listeners += listeners; } - }, - - // share object handler with v-bind:class - handleObject: style.handleObject, - - handleSingle: function handleSingle(attr, value) { - var el = this.el; - var interp = this.descriptor.interp; - if (this.modifiers.camel) { - attr = camelize(attr); + // recursively invoke hooks on child component root node + if (isDef(i = vnode.child) && isDef(i = i._vnode) && isDef(i.data)) { + removeAndInvokeRemoveHook(i, rm); } - if (!interp && attrWithPropsRE.test(attr) && attr in el) { - var attrValue = attr === 'value' ? value == null // IE9 will set input.value to "null" for null... - ? '' : value : value; - - if (el[attr] !== attrValue) { - el[attr] = attrValue; - } + for (i = 0; i < cbs.remove.length; ++i) { + cbs.remove[i](vnode, rm); } - // set model props - var modelProp = modelProps[attr]; - if (!interp && modelProp) { - el[modelProp] = value; - // update v-model if present - var model = el.__v_model; - if (model) { - model.listener(); - } + if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) { + i(vnode, rm); + } else { + rm(); } - // do not set value attribute for textarea - if (attr === 'value' && el.tagName === 'TEXTAREA') { - el.removeAttribute(attr); - return; - } - // update attribute - if (enumeratedAttrRE.test(attr)) { - el.setAttribute(attr, value ? 'true' : 'false'); - } else if (value != null && value !== false) { - if (attr === 'class') { - // handle edge case #1960: - // class interpolation should not overwrite Vue transition class - if (el.__v_trans) { - value += ' ' + el.__v_trans.id + '-transition'; - } - setClass(el, value); - } else if (xlinkRE.test(attr)) { - el.setAttributeNS(xlinkNS, attr, value === true ? '' : value); + } else { + removeElement(vnode.elm); + } + } + + function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) { + var oldStartIdx = 0; + var newStartIdx = 0; + var oldEndIdx = oldCh.length - 1; + var oldStartVnode = oldCh[0]; + var oldEndVnode = oldCh[oldEndIdx]; + var newEndIdx = newCh.length - 1; + var newStartVnode = newCh[0]; + var newEndVnode = newCh[newEndIdx]; + var oldKeyToIdx, idxInOld, elmToMove, before; + + // removeOnly is a special flag used only by <transition-group> + // to ensure removed elements stay in correct relative positions + // during leaving transitions + var canMove = !removeOnly; + + while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) { + if (isUndef(oldStartVnode)) { + oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left + } else if (isUndef(oldEndVnode)) { + oldEndVnode = oldCh[--oldEndIdx]; + } else if (sameVnode(oldStartVnode, newStartVnode)) { + patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue); + oldStartVnode = oldCh[++oldStartIdx]; + newStartVnode = newCh[++newStartIdx]; + } else if (sameVnode(oldEndVnode, newEndVnode)) { + patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue); + oldEndVnode = oldCh[--oldEndIdx]; + newEndVnode = newCh[--newEndIdx]; + } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right + patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue); + canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm)); + oldStartVnode = oldCh[++oldStartIdx]; + newEndVnode = newCh[--newEndIdx]; + } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left + patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue); + canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm); + oldEndVnode = oldCh[--oldEndIdx]; + newStartVnode = newCh[++newStartIdx]; + } else { + if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); } + idxInOld = isDef(newStartVnode.key) ? oldKeyToIdx[newStartVnode.key] : null; + if (isUndef(idxInOld)) { // New element + nodeOps.insertBefore(parentElm, createElm(newStartVnode, insertedVnodeQueue), oldStartVnode.elm); + newStartVnode = newCh[++newStartIdx]; } else { - el.setAttribute(attr, value === true ? '' : value); + elmToMove = oldCh[idxInOld]; + /* istanbul ignore if */ + if ("development" !== 'production' && !elmToMove) { + warn( + 'It seems there are duplicate keys that is causing an update error. ' + + 'Make sure each v-for item has a unique key.' + ); + } + if (elmToMove.tag !== newStartVnode.tag) { + // same key but different element. treat as new element + nodeOps.insertBefore(parentElm, createElm(newStartVnode, insertedVnodeQueue), oldStartVnode.elm); + newStartVnode = newCh[++newStartIdx]; + } else { + patchVnode(elmToMove, newStartVnode, insertedVnodeQueue); + oldCh[idxInOld] = undefined; + canMove && nodeOps.insertBefore(parentElm, newStartVnode.elm, oldStartVnode.elm); + newStartVnode = newCh[++newStartIdx]; + } } - } else { - el.removeAttribute(attr); } } - }; - - var el = { - - priority: EL, - - bind: function bind() { - /* istanbul ignore if */ - if (!this.arg) { - return; - } - var id = this.id = camelize(this.arg); - var refs = (this._scope || this.vm).$els; - if (hasOwn(refs, id)) { - refs[id] = this.el; - } else { - defineReactive(refs, id, this.el); - } - }, - - unbind: function unbind() { - var refs = (this._scope || this.vm).$els; - if (refs[this.id] === this.el) { - refs[this.id] = null; - } + if (oldStartIdx > oldEndIdx) { + before = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm; + addVnodes(parentElm, before, newCh, newStartIdx, newEndIdx, insertedVnodeQueue); + } else if (newStartIdx > newEndIdx) { + removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx); } - }; + } - var ref = { - bind: function bind() { - 'development' !== 'production' && warn('v-ref:' + this.arg + ' must be used on a child ' + 'component. Found on <' + this.el.tagName.toLowerCase() + '>.', this.vm); + function patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) { + if (oldVnode === vnode) { + return } - }; - - var cloak = { - bind: function bind() { - var el = this.el; - this.vm.$once('pre-hook:compiled', function () { - el.removeAttribute('v-cloak'); - }); + // reuse element for static trees. + // note we only do this if the vnode is cloned - + // if the new node is not cloned it means the render functions have been + // reset by the hot-reload-api and we need to do a proper re-render. + if (vnode.isStatic && + oldVnode.isStatic && + vnode.key === oldVnode.key && + vnode.isCloned) { + vnode.elm = oldVnode.elm; + return } - }; - - // must export plain object - var directives = { - text: text$1, - html: html, - 'for': vFor, - 'if': vIf, - show: show, - model: model, - on: on$1, - bind: bind$1, - el: el, - ref: ref, - cloak: cloak - }; - - var vClass = { - - deep: true, - - update: function update(value) { - if (!value) { - this.cleanup(); - } else if (typeof value === 'string') { - this.setClass(value.trim().split(/\s+/)); - } else { - this.setClass(normalize$1(value)); + var i; + var data = vnode.data; + var hasData = isDef(data); + if (hasData && isDef(i = data.hook) && isDef(i = i.prepatch)) { + i(oldVnode, vnode); + } + var elm = vnode.elm = oldVnode.elm; + var oldCh = oldVnode.children; + var ch = vnode.children; + if (hasData && isPatchable(vnode)) { + for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); } + if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); } + } + if (isUndef(vnode.text)) { + if (isDef(oldCh) && isDef(ch)) { + if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); } + } else if (isDef(ch)) { + if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); } + addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue); + } else if (isDef(oldCh)) { + removeVnodes(elm, oldCh, 0, oldCh.length - 1); + } else if (isDef(oldVnode.text)) { + nodeOps.setTextContent(elm, ''); + } + } else if (oldVnode.text !== vnode.text) { + nodeOps.setTextContent(elm, vnode.text); + } + if (hasData) { + if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); } + } + } + + function invokeInsertHook (vnode, queue, initial) { + // delay insert hooks for component root nodes, invoke them after the + // element is really inserted + if (initial && vnode.parent) { + vnode.parent.data.pendingInsert = queue; + } else { + for (var i = 0; i < queue.length; ++i) { + queue[i].data.hook.insert(queue[i]); } - }, + } + } - setClass: function setClass(value) { - this.cleanup(value); - for (var i = 0, l = value.length; i < l; i++) { - var val = value[i]; - if (val) { - apply(this.el, val, addClass); - } + var bailed = false; + function hydrate (elm, vnode, insertedVnodeQueue) { + { + if (!assertNodeMatch(elm, vnode)) { + return false } - this.prevKeys = value; - }, - - cleanup: function cleanup(value) { - var prevKeys = this.prevKeys; - if (!prevKeys) return; - var i = prevKeys.length; - while (i--) { - var key = prevKeys[i]; - if (!value || value.indexOf(key) < 0) { - apply(this.el, key, removeClass); - } + } + vnode.elm = elm; + var tag = vnode.tag; + var data = vnode.data; + var children = vnode.children; + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); } + if (isDef(i = vnode.child)) { + // child component. it should have hydrated its own tree. + initComponent(vnode, insertedVnodeQueue); + return true } } - }; - - /** - * Normalize objects and arrays (potentially containing objects) - * into array of strings. - * - * @param {Object|Array<String|Object>} value - * @return {Array<String>} - */ - - function normalize$1(value) { - var res = []; - if (isArray(value)) { - for (var i = 0, l = value.length; i < l; i++) { - var _key = value[i]; - if (_key) { - if (typeof _key === 'string') { - res.push(_key); + if (isDef(tag)) { + if (isDef(children)) { + var childNodes = nodeOps.childNodes(elm); + // empty element, allow client to pick up and populate children + if (!childNodes.length) { + createChildren(vnode, children, insertedVnodeQueue); + } else { + var childrenMatch = true; + if (childNodes.length !== children.length) { + childrenMatch = false; } else { - for (var k in _key) { - if (_key[k]) res.push(k); + for (var i$1 = 0; i$1 < children.length; i$1++) { + if (!hydrate(childNodes[i$1], children[i$1], insertedVnodeQueue)) { + childrenMatch = false; + break + } } } + if (!childrenMatch) { + if ("development" !== 'production' && + typeof console !== 'undefined' && + !bailed) { + bailed = true; + console.warn('Parent: ', elm); + console.warn('Mismatching childNodes vs. VNodes: ', childNodes, children); + } + return false + } } } - } else if (isObject(value)) { - for (var key in value) { - if (value[key]) res.push(key); + if (isDef(data)) { + invokeCreateHooks(vnode, insertedVnodeQueue); } } - return res; + return true } - /** - * Add or remove a class/classes on an element - * - * @param {Element} el - * @param {String} key The class name. This may or may not - * contain a space character, in such a - * case we'll deal with multiple class - * names at once. - * @param {Function} fn - */ - - function apply(el, key, fn) { - key = key.trim(); - if (key.indexOf(' ') === -1) { - fn(el, key); - return; - } - // The key contains one or more space characters. - // Since a class name doesn't accept such characters, we - // treat it as multiple classes. - var keys = key.split(/\s+/); - for (var i = 0, l = keys.length; i < l; i++) { - fn(el, keys[i]); + function assertNodeMatch (node, vnode) { + if (vnode.tag) { + return ( + vnode.tag.indexOf('vue-component') === 0 || + vnode.tag === nodeOps.tagName(node).toLowerCase() + ) + } else { + return _toString(vnode.text) === node.data } } - var component = { - - priority: COMPONENT, - - params: ['keep-alive', 'transition-mode', 'inline-template'], - - /** - * Setup. Two possible usages: - * - * - static: - * <comp> or <div v-component="comp"> - * - * - dynamic: - * <component :is="view"> - */ - - bind: function bind() { - if (!this.el.__vue__) { - // keep-alive cache - this.keepAlive = this.params.keepAlive; - if (this.keepAlive) { - this.cache = {}; - } - // check inline-template - if (this.params.inlineTemplate) { - // extract inline template as a DocumentFragment - this.inlineTemplate = extractContent(this.el, true); - } - // component resolution related state - this.pendingComponentCb = this.Component = null; - // transition related state - this.pendingRemovals = 0; - this.pendingRemovalCb = null; - // create a ref anchor - this.anchor = createAnchor('v-component'); - replace(this.el, this.anchor); - // remove is attribute. - // this is removed during compilation, but because compilation is - // cached, when the component is used elsewhere this attribute - // will remain at link time. - this.el.removeAttribute('is'); - this.el.removeAttribute(':is'); - // remove ref, same as above - if (this.descriptor.ref) { - this.el.removeAttribute('v-ref:' + hyphenate(this.descriptor.ref)); - } - // if static, build right now. - if (this.literal) { - this.setComponent(this.expression); - } - } else { - 'development' !== 'production' && warn('cannot mount component "' + this.expression + '" ' + 'on already mounted element: ' + this.el); - } - }, - - /** - * Public update, called by the watcher in the dynamic - * literal scenario, e.g. <component :is="view"> - */ + return function patch (oldVnode, vnode, hydrating, removeOnly) { + if (!vnode) { + if (oldVnode) { invokeDestroyHook(oldVnode); } + return + } - update: function update(value) { - if (!this.literal) { - this.setComponent(value); - } - }, + var elm, parent; + var isInitialPatch = false; + var insertedVnodeQueue = []; - /** - * Switch dynamic components. May resolve the component - * asynchronously, and perform transition based on - * specified transition mode. Accepts a few additional - * arguments specifically for vue-router. - * - * The callback is called when the full transition is - * finished. - * - * @param {String} value - * @param {Function} [cb] - */ - - setComponent: function setComponent(value, cb) { - this.invalidatePending(); - if (!value) { - // just remove current - this.unbuild(true); - this.remove(this.childVM, cb); - this.childVM = null; + if (!oldVnode) { + // empty mount, create new root element + isInitialPatch = true; + createElm(vnode, insertedVnodeQueue); + } else { + var isRealElement = isDef(oldVnode.nodeType); + if (!isRealElement && sameVnode(oldVnode, vnode)) { + patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly); } else { - var self = this; - this.resolveComponent(value, function () { - self.mountComponent(cb); - }); - } - }, - - /** - * Resolve the component constructor to use when creating - * the child vm. - * - * @param {String|Function} value - * @param {Function} cb - */ - - resolveComponent: function resolveComponent(value, cb) { - var self = this; - this.pendingComponentCb = cancellable(function (Component) { - self.ComponentName = Component.options.name || (typeof value === 'string' ? value : null); - self.Component = Component; - cb(); - }); - this.vm._resolveComponent(value, this.pendingComponentCb); - }, - - /** - * Create a new instance using the current constructor and - * replace the existing instance. This method doesn't care - * whether the new component and the old one are actually - * the same. - * - * @param {Function} [cb] - */ - - mountComponent: function mountComponent(cb) { - // actual mount - this.unbuild(true); - var self = this; - var activateHooks = this.Component.options.activate; - var cached = this.getCached(); - var newComponent = this.build(); - if (activateHooks && !cached) { - this.waitingFor = newComponent; - callActivateHooks(activateHooks, newComponent, function () { - if (self.waitingFor !== newComponent) { - return; + if (isRealElement) { + // mounting to a real element + // check if this is server-rendered content and if we can perform + // a successful hydration. + if (oldVnode.nodeType === 1 && oldVnode.hasAttribute('server-rendered')) { + oldVnode.removeAttribute('server-rendered'); + hydrating = true; } - self.waitingFor = null; - self.transition(newComponent, cb); - }); - } else { - // update ref for kept-alive component - if (cached) { - newComponent._updateRef(); - } - this.transition(newComponent, cb); - } - }, - - /** - * When the component changes or unbinds before an async - * constructor is resolved, we need to invalidate its - * pending callback. - */ - - invalidatePending: function invalidatePending() { - if (this.pendingComponentCb) { - this.pendingComponentCb.cancel(); - this.pendingComponentCb = null; - } - }, - - /** - * Instantiate/insert a new child vm. - * If keep alive and has cached instance, insert that - * instance; otherwise build a new one and cache it. - * - * @param {Object} [extraOptions] - * @return {Vue} - the created instance - */ - - build: function build(extraOptions) { - var cached = this.getCached(); - if (cached) { - return cached; - } - if (this.Component) { - // default options - var options = { - name: this.ComponentName, - el: cloneNode(this.el), - template: this.inlineTemplate, - // make sure to add the child with correct parent - // if this is a transcluded component, its parent - // should be the transclusion host. - parent: this._host || this.vm, - // if no inline-template, then the compiled - // linker can be cached for better performance. - _linkerCachable: !this.inlineTemplate, - _ref: this.descriptor.ref, - _asComponent: true, - _isRouterView: this._isRouterView, - // if this is a transcluded component, context - // will be the common parent vm of this instance - // and its host. - _context: this.vm, - // if this is inside an inline v-for, the scope - // will be the intermediate scope created for this - // repeat fragment. this is used for linking props - // and container directives. - _scope: this._scope, - // pass in the owner fragment of this component. - // this is necessary so that the fragment can keep - // track of its contained components in order to - // call attach/detach hooks for them. - _frag: this._frag - }; - // extra options - // in 1.0.0 this is used by vue-router only - /* istanbul ignore if */ - if (extraOptions) { - extend(options, extraOptions); - } - var child = new this.Component(options); - if (this.keepAlive) { - this.cache[this.Component.cid] = child; - } - /* istanbul ignore if */ - if ('development' !== 'production' && this.el.hasAttribute('transition') && child._isFragment) { - warn('Transitions will not work on a fragment instance. ' + 'Template: ' + child.$options.template, child); - } - return child; - } - }, - - /** - * Try to get a cached instance of the current component. - * - * @return {Vue|undefined} - */ - - getCached: function getCached() { - return this.keepAlive && this.cache[this.Component.cid]; - }, - - /** - * Teardown the current child, but defers cleanup so - * that we can separate the destroy and removal steps. - * - * @param {Boolean} defer - */ - - unbuild: function unbuild(defer) { - if (this.waitingFor) { - if (!this.keepAlive) { - this.waitingFor.$destroy(); - } - this.waitingFor = null; - } - var child = this.childVM; - if (!child || this.keepAlive) { - if (child) { - // remove ref - child._inactive = true; - child._updateRef(true); - } - return; - } - // the sole purpose of `deferCleanup` is so that we can - // "deactivate" the vm right now and perform DOM removal - // later. - child.$destroy(false, defer); - }, - - /** - * Remove current destroyed child and manually do - * the cleanup after removal. - * - * @param {Function} cb - */ - - remove: function remove(child, cb) { - var keepAlive = this.keepAlive; - if (child) { - // we may have a component switch when a previous - // component is still being transitioned out. - // we want to trigger only one lastest insertion cb - // when the existing transition finishes. (#1119) - this.pendingRemovals++; - this.pendingRemovalCb = cb; - var self = this; - child.$remove(function () { - self.pendingRemovals--; - if (!keepAlive) child._cleanup(); - if (!self.pendingRemovals && self.pendingRemovalCb) { - self.pendingRemovalCb(); - self.pendingRemovalCb = null; + if (hydrating) { + if (hydrate(oldVnode, vnode, insertedVnodeQueue)) { + invokeInsertHook(vnode, insertedVnodeQueue, true); + return oldVnode + } else { + warn( + 'The client-side rendered virtual DOM tree is not matching ' + + 'server-rendered content. This is likely caused by incorrect ' + + 'HTML markup, for example nesting block-level elements inside ' + + '<p>, or missing <tbody>. Bailing hydration and performing ' + + 'full client-side render.' + ); + } } - }); - } else if (cb) { - cb(); - } - }, - - /** - * Actually swap the components, depending on the - * transition mode. Defaults to simultaneous. - * - * @param {Vue} target - * @param {Function} [cb] - */ - - transition: function transition(target, cb) { - var self = this; - var current = this.childVM; - // for devtool inspection - if (current) current._inactive = true; - target._inactive = false; - this.childVM = target; - switch (self.params.transitionMode) { - case 'in-out': - target.$before(self.anchor, function () { - self.remove(current, cb); - }); - break; - case 'out-in': - self.remove(current, function () { - target.$before(self.anchor, cb); - }); - break; - default: - self.remove(current); - target.$before(self.anchor, cb); - } - }, + // either not server-rendered, or hydration failed. + // create an empty node and replace it + oldVnode = emptyNodeAt(oldVnode); + } + elm = oldVnode.elm; + parent = nodeOps.parentNode(elm); + + createElm(vnode, insertedVnodeQueue); + + // component root element replaced. + // update parent placeholder node element. + if (vnode.parent) { + vnode.parent.elm = vnode.elm; + if (isPatchable(vnode)) { + for (var i = 0; i < cbs.create.length; ++i) { + cbs.create[i](emptyNode, vnode.parent); + } + } + } - /** - * Unbind. - */ - - unbind: function unbind() { - this.invalidatePending(); - // Do not defer cleanup when unbinding - this.unbuild(); - // destroy all keep-alive cached instances - if (this.cache) { - for (var key in this.cache) { - this.cache[key].$destroy(); + if (parent !== null) { + nodeOps.insertBefore(parent, vnode.elm, nodeOps.nextSibling(elm)); + removeVnodes(parent, [oldVnode], 0, 0); + } else if (isDef(oldVnode.tag)) { + invokeDestroyHook(oldVnode); } - this.cache = null; } } - }; - - /** - * Call activate hooks in order (asynchronous) - * - * @param {Array} hooks - * @param {Vue} vm - * @param {Function} cb - */ - function callActivateHooks(hooks, vm, cb) { - var total = hooks.length; - var called = 0; - hooks[0].call(vm, next); - function next() { - if (++called >= total) { - cb(); - } else { - hooks[called].call(vm, next); - } - } + invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch); + return vnode.elm } +} - var propBindingModes = config._propBindingModes; - var empty = {}; - - // regexes - var identRE$1 = /^[$_a-zA-Z]+[\w$]*$/; - var settablePathRE = /^[A-Za-z_$][\w$]*(\.[A-Za-z_$][\w$]*|\[[^\[\]]+\])*$/; - - /** - * Compile props on a root element and return - * a props link function. - * - * @param {Element|DocumentFragment} el - * @param {Array} propOptions - * @param {Vue} vm - * @return {Function} propsLinkFn - */ - - function compileProps(el, propOptions, vm) { - var props = []; - var names = Object.keys(propOptions); - var i = names.length; - var options, name, attr, value, path, parsed, prop; - while (i--) { - name = names[i]; - options = propOptions[name] || empty; +/* */ - if ('development' !== 'production' && name === '$data') { - warn('Do not use $data as prop.', vm); - continue; - } +var directives = { + create: updateDirectives, + update: updateDirectives, + destroy: function unbindDirectives (vnode) { + updateDirectives(vnode, emptyNode); + } +}; - // props could contain dashes, which will be - // interpreted as minus calculations by the parser - // so we need to camelize the path here - path = camelize(name); - if (!identRE$1.test(path)) { - 'development' !== 'production' && warn('Invalid prop key: "' + name + '". Prop keys ' + 'must be valid identifiers.', vm); - continue; - } +function updateDirectives ( + oldVnode, + vnode +) { + if (!oldVnode.data.directives && !vnode.data.directives) { + return + } + var isCreate = oldVnode === emptyNode; + var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context); + var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context); - prop = { - name: name, - path: path, - options: options, - mode: propBindingModes.ONE_WAY, - raw: null - }; + var dirsWithInsert = []; + var dirsWithPostpatch = []; - attr = hyphenate(name); - // first check dynamic version - if ((value = getBindAttr(el, attr)) === null) { - if ((value = getBindAttr(el, attr + '.sync')) !== null) { - prop.mode = propBindingModes.TWO_WAY; - } else if ((value = getBindAttr(el, attr + '.once')) !== null) { - prop.mode = propBindingModes.ONE_TIME; - } + var key, oldDir, dir; + for (key in newDirs) { + oldDir = oldDirs[key]; + dir = newDirs[key]; + if (!oldDir) { + // new directive, bind + callHook$1(dir, 'bind', vnode, oldVnode); + if (dir.def && dir.def.inserted) { + dirsWithInsert.push(dir); } - if (value !== null) { - // has dynamic binding! - prop.raw = value; - parsed = parseDirective(value); - value = parsed.expression; - prop.filters = parsed.filters; - // check binding type - if (isLiteral(value) && !parsed.filters) { - // for expressions containing literal numbers and - // booleans, there's no need to setup a prop binding, - // so we can optimize them as a one-time set. - prop.optimizedLiteral = true; - } else { - prop.dynamic = true; - // check non-settable path for two-way bindings - if ('development' !== 'production' && prop.mode === propBindingModes.TWO_WAY && !settablePathRE.test(value)) { - prop.mode = propBindingModes.ONE_WAY; - warn('Cannot bind two-way prop with non-settable ' + 'parent path: ' + value, vm); - } - } - prop.parentPath = value; - - // warn required two-way - if ('development' !== 'production' && options.twoWay && prop.mode !== propBindingModes.TWO_WAY) { - warn('Prop "' + name + '" expects a two-way binding type.', vm); - } - } else if ((value = getAttr(el, attr)) !== null) { - // has literal binding! - prop.raw = value; - } else if ('development' !== 'production') { - // check possible camelCase prop usage - var lowerCaseName = path.toLowerCase(); - value = /[A-Z\-]/.test(name) && (el.getAttribute(lowerCaseName) || el.getAttribute(':' + lowerCaseName) || el.getAttribute('v-bind:' + lowerCaseName) || el.getAttribute(':' + lowerCaseName + '.once') || el.getAttribute('v-bind:' + lowerCaseName + '.once') || el.getAttribute(':' + lowerCaseName + '.sync') || el.getAttribute('v-bind:' + lowerCaseName + '.sync')); - if (value) { - warn('Possible usage error for prop `' + lowerCaseName + '` - ' + 'did you mean `' + attr + '`? HTML is case-insensitive, remember to use ' + 'kebab-case for props in templates.', vm); - } else if (options.required) { - // warn missing required - warn('Missing required prop: ' + name, vm); - } + } else { + // existing directive, update + dir.oldValue = oldDir.value; + callHook$1(dir, 'update', vnode, oldVnode); + if (dir.def && dir.def.componentUpdated) { + dirsWithPostpatch.push(dir); } - // push prop - props.push(prop); } - return makePropsLinkFn(props); } - /** - * Build a function that applies props to a vm. - * - * @param {Array} props - * @return {Function} propsLinkFn - */ - - function makePropsLinkFn(props) { - return function propsLinkFn(vm, scope) { - // store resolved props info - vm._props = {}; - var inlineProps = vm.$options.propsData; - var i = props.length; - var prop, path, options, value, raw; - while (i--) { - prop = props[i]; - raw = prop.raw; - path = prop.path; - options = prop.options; - vm._props[path] = prop; - if (inlineProps && hasOwn(inlineProps, path)) { - initProp(vm, prop, inlineProps[path]); - }if (raw === null) { - // initialize absent prop - initProp(vm, prop, undefined); - } else if (prop.dynamic) { - // dynamic prop - if (prop.mode === propBindingModes.ONE_TIME) { - // one time binding - value = (scope || vm._context || vm).$get(prop.parentPath); - initProp(vm, prop, value); - } else { - if (vm._context) { - // dynamic binding - vm._bindDir({ - name: 'prop', - def: propDef, - prop: prop - }, null, null, scope); // el, host, scope - } else { - // root instance - initProp(vm, prop, vm.$get(prop.parentPath)); - } - } - } else if (prop.optimizedLiteral) { - // optimized literal, cast it and just set once - var stripped = stripQuotes(raw); - value = stripped === raw ? toBoolean(toNumber(raw)) : stripped; - initProp(vm, prop, value); - } else { - // string literal, but we need to cater for - // Boolean props with no value, or with same - // literal value (e.g. disabled="disabled") - // see https://github.com/vuejs/vue-loader/issues/182 - value = options.type === Boolean && (raw === '' || raw === hyphenate(prop.name)) ? true : raw; - initProp(vm, prop, value); - } - } + if (dirsWithInsert.length) { + var callInsert = function () { + dirsWithInsert.forEach(function (dir) { + callHook$1(dir, 'inserted', vnode, oldVnode); + }); }; + if (isCreate) { + mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', callInsert, 'dir-insert'); + } else { + callInsert(); + } } - /** - * Process a prop with a rawValue, applying necessary coersions, - * default values & assertions and call the given callback with - * processed value. - * - * @param {Vue} vm - * @param {Object} prop - * @param {*} rawValue - * @param {Function} fn - */ - - function processPropValue(vm, prop, rawValue, fn) { - var isSimple = prop.dynamic && isSimplePath(prop.parentPath); - var value = rawValue; - if (value === undefined) { - value = getPropDefaultValue(vm, prop); - } - value = coerceProp(prop, value, vm); - var coerced = value !== rawValue; - if (!assertProp(prop, value, vm)) { - value = undefined; - } - if (isSimple && !coerced) { - withoutConversion(function () { - fn(value); + if (dirsWithPostpatch.length) { + mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'postpatch', function () { + dirsWithPostpatch.forEach(function (dir) { + callHook$1(dir, 'componentUpdated', vnode, oldVnode); }); - } else { - fn(value); + }, 'dir-postpatch'); + } + + if (!isCreate) { + for (key in oldDirs) { + if (!newDirs[key]) { + // no longer present, unbind + callHook$1(oldDirs[key], 'unbind', oldVnode); + } } } +} - /** - * Set a prop's initial value on a vm and its data object. - * - * @param {Vue} vm - * @param {Object} prop - * @param {*} value - */ +var emptyModifiers = Object.create(null); - function initProp(vm, prop, value) { - processPropValue(vm, prop, value, function (value) { - defineReactive(vm, prop.path, value); - }); +function normalizeDirectives$1 ( + dirs, + vm +) { + var res = Object.create(null); + if (!dirs) { + return res } + var i, dir; + for (i = 0; i < dirs.length; i++) { + dir = dirs[i]; + if (!dir.modifiers) { + dir.modifiers = emptyModifiers; + } + res[getRawDirName(dir)] = dir; + dir.def = resolveAsset(vm.$options, 'directives', dir.name, true); + } + return res +} - /** - * Update a prop's value on a vm. - * - * @param {Vue} vm - * @param {Object} prop - * @param {*} value - */ +function getRawDirName (dir) { + return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.'))) +} - function updateProp(vm, prop, value) { - processPropValue(vm, prop, value, function (value) { - vm[prop.path] = value; - }); +function callHook$1 (dir, hook, vnode, oldVnode) { + var fn = dir.def && dir.def[hook]; + if (fn) { + fn(vnode.elm, dir, vnode, oldVnode); } +} - /** - * Get the default value of a prop. - * - * @param {Vue} vm - * @param {Object} prop - * @return {*} - */ +var baseModules = [ + ref, + directives +]; - function getPropDefaultValue(vm, prop) { - // no default, return undefined - var options = prop.options; - if (!hasOwn(options, 'default')) { - // absent boolean value defaults to false - return options.type === Boolean ? false : undefined; - } - var def = options['default']; - // warn against non-factory defaults for Object & Array - if (isObject(def)) { - 'development' !== 'production' && warn('Invalid default value for prop "' + prop.name + '": ' + 'Props with type Object/Array must use a factory function ' + 'to return the default value.', vm); - } - // call factory function for non-Function types - return typeof def === 'function' && options.type !== Function ? def.call(vm) : def; - } +/* */ - /** - * Assert whether a prop is valid. - * - * @param {Object} prop - * @param {*} value - * @param {Vue} vm - */ +function updateAttrs (oldVnode, vnode) { + if (!oldVnode.data.attrs && !vnode.data.attrs) { + return + } + var key, cur, old; + var elm = vnode.elm; + var oldAttrs = oldVnode.data.attrs || {}; + var attrs = vnode.data.attrs || {}; + // clone observed objects, as the user probably wants to mutate it + if (attrs.__ob__) { + attrs = vnode.data.attrs = extend({}, attrs); + } - function assertProp(prop, value, vm) { - if (!prop.options.required && ( // non-required - prop.raw === null || // abscent - value == null) // null or undefined - ) { - return true; - } - var options = prop.options; - var type = options.type; - var valid = !type; - var expectedTypes = []; - if (type) { - if (!isArray(type)) { - type = [type]; - } - for (var i = 0; i < type.length && !valid; i++) { - var assertedType = assertType(value, type[i]); - expectedTypes.push(assertedType.expectedType); - valid = assertedType.valid; - } + for (key in attrs) { + cur = attrs[key]; + old = oldAttrs[key]; + if (old !== cur) { + setAttr(elm, key, cur); } - if (!valid) { - if ('development' !== 'production') { - warn('Invalid prop: type check failed for prop "' + prop.name + '".' + ' Expected ' + expectedTypes.map(formatType).join(', ') + ', got ' + formatValue(value) + '.', vm); - } - return false; - } - var validator = options.validator; - if (validator) { - if (!validator(value)) { - 'development' !== 'production' && warn('Invalid prop: custom validator check failed for prop "' + prop.name + '".', vm); - return false; + } + for (key in oldAttrs) { + if (attrs[key] == null) { + if (isXlink(key)) { + elm.removeAttributeNS(xlinkNS, getXlinkProp(key)); + } else if (!isEnumeratedAttr(key)) { + elm.removeAttribute(key); } } - return true; } +} - /** - * Force parsing value with coerce option. - * - * @param {*} value - * @param {Object} options - * @return {*} - */ - - function coerceProp(prop, value, vm) { - var coerce = prop.options.coerce; - if (!coerce) { - return value; +function setAttr (el, key, value) { + if (isBooleanAttr(key)) { + // set attribute for blank value + // e.g. <option disabled>Select one</option> + if (isFalsyAttrValue(value)) { + el.removeAttribute(key); + } else { + el.setAttribute(key, key); } - if (typeof coerce === 'function') { - return coerce(value); + } else if (isEnumeratedAttr(key)) { + el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true'); + } else if (isXlink(key)) { + if (isFalsyAttrValue(value)) { + el.removeAttributeNS(xlinkNS, getXlinkProp(key)); } else { - 'development' !== 'production' && warn('Invalid coerce for prop "' + prop.name + '": expected function, got ' + typeof coerce + '.', vm); - return value; + el.setAttributeNS(xlinkNS, key, value); } - } - - /** - * Assert the type of a value - * - * @param {*} value - * @param {Function} type - * @return {Object} - */ - - function assertType(value, type) { - var valid; - var expectedType; - if (type === String) { - expectedType = 'string'; - valid = typeof value === expectedType; - } else if (type === Number) { - expectedType = 'number'; - valid = typeof value === expectedType; - } else if (type === Boolean) { - expectedType = 'boolean'; - valid = typeof value === expectedType; - } else if (type === Function) { - expectedType = 'function'; - valid = typeof value === expectedType; - } else if (type === Object) { - expectedType = 'object'; - valid = isPlainObject(value); - } else if (type === Array) { - expectedType = 'array'; - valid = isArray(value); + } else { + if (isFalsyAttrValue(value)) { + el.removeAttribute(key); } else { - valid = value instanceof type; + el.setAttribute(key, value); } - return { - valid: valid, - expectedType: expectedType - }; } +} - /** - * Format type for output - * - * @param {String} type - * @return {String} - */ - - function formatType(type) { - return type ? type.charAt(0).toUpperCase() + type.slice(1) : 'custom type'; - } +var attrs = { + create: updateAttrs, + update: updateAttrs +}; - /** - * Format value - * - * @param {*} value - * @return {String} - */ +/* */ - function formatValue(val) { - return Object.prototype.toString.call(val).slice(8, -1); +function updateClass (oldVnode, vnode) { + var el = vnode.elm; + var data = vnode.data; + var oldData = oldVnode.data; + if (!data.staticClass && !data.class && + (!oldData || (!oldData.staticClass && !oldData.class))) { + return } - var bindingModes = config._propBindingModes; - - var propDef = { + var cls = genClassForVnode(vnode); - bind: function bind() { - var child = this.vm; - var parent = child._context; - // passed in from compiler directly - var prop = this.descriptor.prop; - var childKey = prop.path; - var parentKey = prop.parentPath; - var twoWay = prop.mode === bindingModes.TWO_WAY; - - var parentWatcher = this.parentWatcher = new Watcher(parent, parentKey, function (val) { - updateProp(child, prop, val); - }, { - twoWay: twoWay, - filters: prop.filters, - // important: props need to be observed on the - // v-for scope if present - scope: this._scope - }); - - // set the child initial value. - initProp(child, prop, parentWatcher.value); - - // setup two-way binding - if (twoWay) { - // important: defer the child watcher creation until - // the created hook (after data observation) - var self = this; - child.$once('pre-hook:created', function () { - self.childWatcher = new Watcher(child, childKey, function (val) { - parentWatcher.set(val); - }, { - // ensure sync upward before parent sync down. - // this is necessary in cases e.g. the child - // mutates a prop array, then replaces it. (#1683) - sync: true - }); - }); - } - }, - - unbind: function unbind() { - this.parentWatcher.teardown(); - if (this.childWatcher) { - this.childWatcher.teardown(); - } - } - }; - - var queue$1 = []; - var queued = false; - - /** - * Push a job into the queue. - * - * @param {Function} job - */ - - function pushJob(job) { - queue$1.push(job); - if (!queued) { - queued = true; - nextTick(flush); - } + // handle transition classes + var transitionClass = el._transitionClasses; + if (transitionClass) { + cls = concat(cls, stringifyClass(transitionClass)); } - /** - * Flush the queue, and do one forced reflow before - * triggering transitions. - */ - - function flush() { - // Force layout - var f = document.documentElement.offsetHeight; - for (var i = 0; i < queue$1.length; i++) { - queue$1[i](); - } - queue$1 = []; - queued = false; - // dummy return, so js linters don't complain about - // unused variable f - return f; + // set the class + if (cls !== el._prevClass) { + el.setAttribute('class', cls); + el._prevClass = cls; } +} - var TYPE_TRANSITION = 'transition'; - var TYPE_ANIMATION = 'animation'; - var transDurationProp = transitionProp + 'Duration'; - var animDurationProp = animationProp + 'Duration'; +var klass = { + create: updateClass, + update: updateClass +}; - /** - * If a just-entered element is applied the - * leave class while its enter transition hasn't started yet, - * and the transitioned property has the same value for both - * enter/leave, then the leave transition will be skipped and - * the transitionend event never fires. This function ensures - * its callback to be called after a transition has started - * by waiting for double raf. - * - * It falls back to setTimeout on devices that support CSS - * transitions but not raf (e.g. Android 4.2 browser) - since - * these environments are usually slow, we are giving it a - * relatively large timeout. - */ - - var raf = inBrowser && window.requestAnimationFrame; - var waitForTransitionStart = raf - /* istanbul ignore next */ - ? function (fn) { - raf(function () { - raf(fn); - }); - } : function (fn) { - setTimeout(fn, 50); - }; +// skip type checking this file because we need to attach private properties +// to elements - /** - * A Transition object that encapsulates the state and logic - * of the transition. - * - * @param {Element} el - * @param {String} id - * @param {Object} hooks - * @param {Vue} vm - */ - function Transition(el, id, hooks, vm) { - this.id = id; - this.el = el; - this.enterClass = hooks && hooks.enterClass || id + '-enter'; - this.leaveClass = hooks && hooks.leaveClass || id + '-leave'; - this.hooks = hooks; - this.vm = vm; - // async state - this.pendingCssEvent = this.pendingCssCb = this.cancel = this.pendingJsCb = this.op = this.cb = null; - this.justEntered = false; - this.entered = this.left = false; - this.typeCache = {}; - // check css transition type - this.type = hooks && hooks.type; - /* istanbul ignore if */ - if ('development' !== 'production') { - if (this.type && this.type !== TYPE_TRANSITION && this.type !== TYPE_ANIMATION) { - warn('invalid CSS transition type for transition="' + this.id + '": ' + this.type, vm); - } - } - // bind - var self = this;['enterNextTick', 'enterDone', 'leaveNextTick', 'leaveDone'].forEach(function (m) { - self[m] = bind(self[m], self); - }); +function updateDOMListeners (oldVnode, vnode) { + if (!oldVnode.data.on && !vnode.data.on) { + return } - - var p$1 = Transition.prototype; - - /** - * Start an entering transition. - * - * 1. enter transition triggered - * 2. call beforeEnter hook - * 3. add enter class - * 4. insert/show element - * 5. call enter hook (with possible explicit js callback) - * 6. reflow - * 7. based on transition type: - * - transition: - * remove class now, wait for transitionend, - * then done if there's no explicit js callback. - * - animation: - * wait for animationend, remove class, - * then done if there's no explicit js callback. - * - no css transition: - * done now if there's no explicit js callback. - * 8. wait for either done or js callback, then call - * afterEnter hook. - * - * @param {Function} op - insert/show the element - * @param {Function} [cb] - */ - - p$1.enter = function (op, cb) { - this.cancelPending(); - this.callHook('beforeEnter'); - this.cb = cb; - addClass(this.el, this.enterClass); - op(); - this.entered = false; - this.callHookWithCb('enter'); - if (this.entered) { - return; // user called done synchronously. - } - this.cancel = this.hooks && this.hooks.enterCancelled; - pushJob(this.enterNextTick); - }; - - /** - * The "nextTick" phase of an entering transition, which is - * to be pushed into a queue and executed after a reflow so - * that removing the class can trigger a CSS transition. - */ - - p$1.enterNextTick = function () { - var _this = this; - - // prevent transition skipping - this.justEntered = true; - waitForTransitionStart(function () { - _this.justEntered = false; - }); - var enterDone = this.enterDone; - var type = this.getCssTransitionType(this.enterClass); - if (!this.pendingJsCb) { - if (type === TYPE_TRANSITION) { - // trigger transition by removing enter class now - removeClass(this.el, this.enterClass); - this.setupCssCb(transitionEndEvent, enterDone); - } else if (type === TYPE_ANIMATION) { - this.setupCssCb(animationEndEvent, enterDone); - } else { - enterDone(); + var on = vnode.data.on || {}; + var oldOn = oldVnode.data.on || {}; + var add = vnode.elm._v_add || (vnode.elm._v_add = function (event, handler, capture) { + vnode.elm.addEventListener(event, handler, capture); + }); + var remove = vnode.elm._v_remove || (vnode.elm._v_remove = function (event, handler) { + vnode.elm.removeEventListener(event, handler); + }); + updateListeners(on, oldOn, add, remove, vnode.context); +} + +var events = { + create: updateDOMListeners, + update: updateDOMListeners +}; + +/* */ + +function updateDOMProps (oldVnode, vnode) { + if (!oldVnode.data.domProps && !vnode.data.domProps) { + return + } + var key, cur; + var elm = vnode.elm; + var oldProps = oldVnode.data.domProps || {}; + var props = vnode.data.domProps || {}; + // clone observed objects, as the user probably wants to mutate it + if (props.__ob__) { + props = vnode.data.domProps = extend({}, props); + } + + for (key in oldProps) { + if (props[key] == null) { + elm[key] = undefined; + } + } + for (key in props) { + // ignore children if the node has textContent or innerHTML, + // as these will throw away existing DOM nodes and cause removal errors + // on subsequent patches (#3360) + if ((key === 'textContent' || key === 'innerHTML') && vnode.children) { + vnode.children.length = 0; + } + cur = props[key]; + if (key === 'value') { + // store value as _value as well since + // non-string values will be stringified + elm._value = cur; + // avoid resetting cursor position when value is the same + var strCur = cur == null ? '' : String(cur); + if (elm.value !== strCur && !elm.composing) { + elm.value = strCur; } - } else if (type === TYPE_TRANSITION) { - removeClass(this.el, this.enterClass); + } else { + elm[key] = cur; } - }; + } +} - /** - * The "cleanup" phase of an entering transition. - */ +var domProps = { + create: updateDOMProps, + update: updateDOMProps +}; - p$1.enterDone = function () { - this.entered = true; - this.cancel = this.pendingJsCb = null; - removeClass(this.el, this.enterClass); - this.callHook('afterEnter'); - if (this.cb) this.cb(); - }; +/* */ - /** - * Start a leaving transition. - * - * 1. leave transition triggered. - * 2. call beforeLeave hook - * 3. add leave class (trigger css transition) - * 4. call leave hook (with possible explicit js callback) - * 5. reflow if no explicit js callback is provided - * 6. based on transition type: - * - transition or animation: - * wait for end event, remove class, then done if - * there's no explicit js callback. - * - no css transition: - * done if there's no explicit js callback. - * 7. wait for either done or js callback, then call - * afterLeave hook. - * - * @param {Function} op - remove/hide the element - * @param {Function} [cb] - */ +var prefixes = ['Webkit', 'Moz', 'ms']; - p$1.leave = function (op, cb) { - this.cancelPending(); - this.callHook('beforeLeave'); - this.op = op; - this.cb = cb; - addClass(this.el, this.leaveClass); - this.left = false; - this.callHookWithCb('leave'); - if (this.left) { - return; // user called done synchronously. - } - this.cancel = this.hooks && this.hooks.leaveCancelled; - // only need to handle leaveDone if - // 1. the transition is already done (synchronously called - // by the user, which causes this.op set to null) - // 2. there's no explicit js callback - if (this.op && !this.pendingJsCb) { - // if a CSS transition leaves immediately after enter, - // the transitionend event never fires. therefore we - // detect such cases and end the leave immediately. - if (this.justEntered) { - this.leaveDone(); - } else { - pushJob(this.leaveNextTick); - } +var testEl; +var normalize = cached(function (prop) { + testEl = testEl || document.createElement('div'); + prop = camelize(prop); + if (prop !== 'filter' && (prop in testEl.style)) { + return prop + } + var upper = prop.charAt(0).toUpperCase() + prop.slice(1); + for (var i = 0; i < prefixes.length; i++) { + var prefixed = prefixes[i] + upper; + if (prefixed in testEl.style) { + return prefixed } - }; + } +}); - /** - * The "nextTick" phase of a leaving transition. - */ +function updateStyle (oldVnode, vnode) { + if ((!oldVnode.data || !oldVnode.data.style) && !vnode.data.style) { + return + } + var cur, name; + var el = vnode.elm; + var oldStyle = oldVnode.data.style || {}; + var style = vnode.data.style || {}; - p$1.leaveNextTick = function () { - var type = this.getCssTransitionType(this.leaveClass); - if (type) { - var event = type === TYPE_TRANSITION ? transitionEndEvent : animationEndEvent; - this.setupCssCb(event, this.leaveDone); - } else { - this.leaveDone(); - } - }; + // handle string + if (typeof style === 'string') { + el.style.cssText = style; + return + } - /** - * The "cleanup" phase of a leaving transition. - */ + var needClone = style.__ob__; - p$1.leaveDone = function () { - this.left = true; - this.cancel = this.pendingJsCb = null; - this.op(); - removeClass(this.el, this.leaveClass); - this.callHook('afterLeave'); - if (this.cb) this.cb(); - this.op = null; - }; + // handle array syntax + if (Array.isArray(style)) { + style = vnode.data.style = toObject(style); + } - /** - * Cancel any pending callbacks from a previously running - * but not finished transition. - */ + // clone the style for future updates, + // in case the user mutates the style object in-place. + if (needClone) { + style = vnode.data.style = extend({}, style); + } - p$1.cancelPending = function () { - this.op = this.cb = null; - var hasPending = false; - if (this.pendingCssCb) { - hasPending = true; - off(this.el, this.pendingCssEvent, this.pendingCssCb); - this.pendingCssEvent = this.pendingCssCb = null; - } - if (this.pendingJsCb) { - hasPending = true; - this.pendingJsCb.cancel(); - this.pendingJsCb = null; + for (name in oldStyle) { + if (style[name] == null) { + el.style[normalize(name)] = ''; } - if (hasPending) { - removeClass(this.el, this.enterClass); - removeClass(this.el, this.leaveClass); - } - if (this.cancel) { - this.cancel.call(this.vm, this.el); - this.cancel = null; - } - }; - - /** - * Call a user-provided synchronous hook function. - * - * @param {String} type - */ - - p$1.callHook = function (type) { - if (this.hooks && this.hooks[type]) { - this.hooks[type].call(this.vm, this.el); + } + for (name in style) { + cur = style[name]; + if (cur !== oldStyle[name]) { + // ie9 setting to null has no effect, must use empty string + el.style[normalize(name)] = cur == null ? '' : cur; } - }; - - /** - * Call a user-provided, potentially-async hook function. - * We check for the length of arguments to see if the hook - * expects a `done` callback. If true, the transition's end - * will be determined by when the user calls that callback; - * otherwise, the end is determined by the CSS transition or - * animation. - * - * @param {String} type - */ + } +} - p$1.callHookWithCb = function (type) { - var hook = this.hooks && this.hooks[type]; - if (hook) { - if (hook.length > 1) { - this.pendingJsCb = cancellable(this[type + 'Done']); - } - hook.call(this.vm, this.el, this.pendingJsCb); - } - }; +var style = { + create: updateStyle, + update: updateStyle +}; - /** - * Get an element's transition type based on the - * calculated styles. - * - * @param {String} className - * @return {Number} - */ +/* */ - p$1.getCssTransitionType = function (className) { - /* istanbul ignore if */ - if (!transitionEndEvent || - // skip CSS transitions if page is not visible - - // this solves the issue of transitionend events not - // firing until the page is visible again. - // pageVisibility API is supported in IE10+, same as - // CSS transitions. - document.hidden || - // explicit js-only transition - this.hooks && this.hooks.css === false || - // element is hidden - isHidden(this.el)) { - return; - } - var type = this.type || this.typeCache[className]; - if (type) return type; - var inlineStyles = this.el.style; - var computedStyles = window.getComputedStyle(this.el); - var transDuration = inlineStyles[transDurationProp] || computedStyles[transDurationProp]; - if (transDuration && transDuration !== '0s') { - type = TYPE_TRANSITION; +/** + * Add class with compatibility for SVG since classList is not supported on + * SVG elements in IE + */ +function addClass (el, cls) { + /* istanbul ignore else */ + if (el.classList) { + if (cls.indexOf(' ') > -1) { + cls.split(/\s+/).forEach(function (c) { return el.classList.add(c); }); } else { - var animDuration = inlineStyles[animDurationProp] || computedStyles[animDurationProp]; - if (animDuration && animDuration !== '0s') { - type = TYPE_ANIMATION; - } + el.classList.add(cls); } - if (type) { - this.typeCache[className] = type; + } else { + var cur = ' ' + el.getAttribute('class') + ' '; + if (cur.indexOf(' ' + cls + ' ') < 0) { + el.setAttribute('class', (cur + cls).trim()); } - return type; - }; - - /** - * Setup a CSS transitionend/animationend callback. - * - * @param {String} event - * @param {Function} cb - */ - - p$1.setupCssCb = function (event, cb) { - this.pendingCssEvent = event; - var self = this; - var el = this.el; - var onEnd = this.pendingCssCb = function (e) { - if (e.target === el) { - off(el, event, onEnd); - self.pendingCssEvent = self.pendingCssCb = null; - if (!self.pendingJsCb && cb) { - cb(); - } - } - }; - on(el, event, onEnd); - }; - - /** - * Check if an element is hidden - in that case we can just - * skip the transition alltogether. - * - * @param {Element} el - * @return {Boolean} - */ + } +} - function isHidden(el) { - if (/svg$/.test(el.namespaceURI)) { - // SVG elements do not have offset(Width|Height) - // so we need to check the client rect - var rect = el.getBoundingClientRect(); - return !(rect.width || rect.height); +/** + * Remove class with compatibility for SVG since classList is not supported on + * SVG elements in IE + */ +function removeClass (el, cls) { + /* istanbul ignore else */ + if (el.classList) { + if (cls.indexOf(' ') > -1) { + cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); }); } else { - return !(el.offsetWidth || el.offsetHeight || el.getClientRects().length); + el.classList.remove(cls); + } + } else { + var cur = ' ' + el.getAttribute('class') + ' '; + var tar = ' ' + cls + ' '; + while (cur.indexOf(tar) >= 0) { + cur = cur.replace(tar, ' '); } + el.setAttribute('class', cur.trim()); } +} - var transition$1 = { +/* */ - priority: TRANSITION, +var hasTransition = inBrowser && !isIE9; +var TRANSITION = 'transition'; +var ANIMATION = 'animation'; - update: function update(id, oldId) { - var el = this.el; - // resolve on owner vm - var hooks = resolveAsset(this.vm.$options, 'transitions', id); - id = id || 'v'; - oldId = oldId || 'v'; - el.__v_trans = new Transition(el, id, hooks, this.vm); - removeClass(el, oldId + '-transition'); - addClass(el, id + '-transition'); - } +// Transition property/event sniffing +var transitionProp = 'transition'; +var transitionEndEvent = 'transitionend'; +var animationProp = 'animation'; +var animationEndEvent = 'animationend'; +if (hasTransition) { + /* istanbul ignore if */ + if (window.ontransitionend === undefined && + window.onwebkittransitionend !== undefined) { + transitionProp = 'WebkitTransition'; + transitionEndEvent = 'webkitTransitionEnd'; + } + if (window.onanimationend === undefined && + window.onwebkitanimationend !== undefined) { + animationProp = 'WebkitAnimation'; + animationEndEvent = 'webkitAnimationEnd'; + } +} + +var raf = (inBrowser && window.requestAnimationFrame) || setTimeout; +function nextFrame (fn) { + raf(function () { + raf(fn); + }); +} + +function addTransitionClass (el, cls) { + (el._transitionClasses || (el._transitionClasses = [])).push(cls); + addClass(el, cls); +} + +function removeTransitionClass (el, cls) { + if (el._transitionClasses) { + remove$1(el._transitionClasses, cls); + } + removeClass(el, cls); +} + +function whenTransitionEnds ( + el, + expectedType, + cb +) { + var ref = getTransitionInfo(el, expectedType); + var type = ref.type; + var timeout = ref.timeout; + var propCount = ref.propCount; + if (!type) { return cb() } + var event = type === TRANSITION ? transitionEndEvent : animationEndEvent; + var ended = 0; + var end = function () { + el.removeEventListener(event, onEnd); + cb(); }; - - var internalDirectives = { - style: style, - 'class': vClass, - component: component, - prop: propDef, - transition: transition$1 + var onEnd = function (e) { + if (e.target === el) { + if (++ended >= propCount) { + end(); + } + } }; - - // special binding prefixes - var bindRE = /^v-bind:|^:/; - var onRE = /^v-on:|^@/; - var dirAttrRE = /^v-([^:]+)(?:$|:(.*)$)/; - var modifierRE = /\.[^\.]+/g; - var transitionRE = /^(v-bind:|:)?transition$/; - - // default directive priority - var DEFAULT_PRIORITY = 1000; - var DEFAULT_TERMINAL_PRIORITY = 2000; - - /** - * Compile a template and return a reusable composite link - * function, which recursively contains more link functions - * inside. This top level compile function would normally - * be called on instance root nodes, but can also be used - * for partial compilation if the partial argument is true. - * - * The returned composite link function, when called, will - * return an unlink function that tearsdown all directives - * created during the linking phase. - * - * @param {Element|DocumentFragment} el - * @param {Object} options - * @param {Boolean} partial - * @return {Function} - */ - - function compile(el, options, partial) { - // link function for the node itself. - var nodeLinkFn = partial || !options._asComponent ? compileNode(el, options) : null; - // link function for the childNodes - var childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && !isScript(el) && el.hasChildNodes() ? compileNodeList(el.childNodes, options) : null; - - /** - * A composite linker function to be called on a already - * compiled piece of DOM, which instantiates all directive - * instances. - * - * @param {Vue} vm - * @param {Element|DocumentFragment} el - * @param {Vue} [host] - host vm of transcluded content - * @param {Object} [scope] - v-for scope - * @param {Fragment} [frag] - link context fragment - * @return {Function|undefined} - */ - - return function compositeLinkFn(vm, el, host, scope, frag) { - // cache childNodes before linking parent, fix #657 - var childNodes = toArray(el.childNodes); - // link - var dirs = linkAndCapture(function compositeLinkCapturer() { - if (nodeLinkFn) nodeLinkFn(vm, el, host, scope, frag); - if (childLinkFn) childLinkFn(vm, childNodes, host, scope, frag); - }, vm); - return makeUnlinkFn(vm, dirs); - }; - } - - /** - * Apply a linker to a vm/element pair and capture the - * directives created during the process. - * - * @param {Function} linker - * @param {Vue} vm - */ - - function linkAndCapture(linker, vm) { - /* istanbul ignore if */ - if ('development' === 'production') {} - var originalDirCount = vm._directives.length; - linker(); - var dirs = vm._directives.slice(originalDirCount); - dirs.sort(directiveComparator); - for (var i = 0, l = dirs.length; i < l; i++) { - dirs[i]._bind(); + setTimeout(function () { + if (ended < propCount) { + end(); + } + }, timeout + 1); + el.addEventListener(event, onEnd); +} + +var transformRE = /\b(transform|all)(,|$)/; + +function getTransitionInfo (el, expectedType) { + var styles = window.getComputedStyle(el); + var transitioneDelays = styles[transitionProp + 'Delay'].split(', '); + var transitionDurations = styles[transitionProp + 'Duration'].split(', '); + var transitionTimeout = getTimeout(transitioneDelays, transitionDurations); + var animationDelays = styles[animationProp + 'Delay'].split(', '); + var animationDurations = styles[animationProp + 'Duration'].split(', '); + var animationTimeout = getTimeout(animationDelays, animationDurations); + + var type; + var timeout = 0; + var propCount = 0; + /* istanbul ignore if */ + if (expectedType === TRANSITION) { + if (transitionTimeout > 0) { + type = TRANSITION; + timeout = transitionTimeout; + propCount = transitionDurations.length; + } + } else if (expectedType === ANIMATION) { + if (animationTimeout > 0) { + type = ANIMATION; + timeout = animationTimeout; + propCount = animationDurations.length; } - return dirs; - } - - /** - * Directive priority sort comparator - * - * @param {Object} a - * @param {Object} b - */ - - function directiveComparator(a, b) { - a = a.descriptor.def.priority || DEFAULT_PRIORITY; - b = b.descriptor.def.priority || DEFAULT_PRIORITY; - return a > b ? -1 : a === b ? 0 : 1; + } else { + timeout = Math.max(transitionTimeout, animationTimeout); + type = timeout > 0 + ? transitionTimeout > animationTimeout + ? TRANSITION + : ANIMATION + : null; + propCount = type + ? type === TRANSITION + ? transitionDurations.length + : animationDurations.length + : 0; + } + var hasTransform = + type === TRANSITION && + transformRE.test(styles[transitionProp + 'Property']); + return { + type: type, + timeout: timeout, + propCount: propCount, + hasTransform: hasTransform + } +} + +function getTimeout (delays, durations) { + return Math.max.apply(null, durations.map(function (d, i) { + return toMs(d) + toMs(delays[i]) + })) +} + +function toMs (s) { + return Number(s.slice(0, -1)) * 1000 +} + +/* */ + +function enter (vnode) { + var el = vnode.elm; + + // call leave callback now + if (el._leaveCb) { + el._leaveCb.cancelled = true; + el._leaveCb(); + } + + var data = resolveTransition(vnode.data.transition); + if (!data) { + return } - /** - * Linker functions return an unlink function that - * tearsdown all directives instances generated during - * the process. - * - * We create unlink functions with only the necessary - * information to avoid retaining additional closures. - * - * @param {Vue} vm - * @param {Array} dirs - * @param {Vue} [context] - * @param {Array} [contextDirs] - * @return {Function} - */ + /* istanbul ignore if */ + if (el._enterCb || el.nodeType !== 1) { + return + } + + var css = data.css; + var type = data.type; + var enterClass = data.enterClass; + var enterActiveClass = data.enterActiveClass; + var appearClass = data.appearClass; + var appearActiveClass = data.appearActiveClass; + var beforeEnter = data.beforeEnter; + var enter = data.enter; + var afterEnter = data.afterEnter; + var enterCancelled = data.enterCancelled; + var beforeAppear = data.beforeAppear; + var appear = data.appear; + var afterAppear = data.afterAppear; + var appearCancelled = data.appearCancelled; + + // activeInstance will always be the <transition> component managing this + // transition. One edge case to check is when the <transition> is placed + // as the root node of a child component. In that case we need to check + // <transition>'s parent for appear check. + var transitionNode = activeInstance.$vnode; + var context = transitionNode && transitionNode.parent + ? transitionNode.parent.context + : activeInstance; + + var isAppear = !context._isMounted || !vnode.isRootInsert; + + if (isAppear && !appear && appear !== '') { + return + } + + var startClass = isAppear ? appearClass : enterClass; + var activeClass = isAppear ? appearActiveClass : enterActiveClass; + var beforeEnterHook = isAppear ? (beforeAppear || beforeEnter) : beforeEnter; + var enterHook = isAppear ? (typeof appear === 'function' ? appear : enter) : enter; + var afterEnterHook = isAppear ? (afterAppear || afterEnter) : afterEnter; + var enterCancelledHook = isAppear ? (appearCancelled || enterCancelled) : enterCancelled; + + var expectsCSS = css !== false && !isIE9; + var userWantsControl = + enterHook && + // enterHook may be a bound method which exposes + // the length of original fn as _length + (enterHook._length || enterHook.length) > 1; + + var cb = el._enterCb = once(function () { + if (expectsCSS) { + removeTransitionClass(el, activeClass); + } + if (cb.cancelled) { + if (expectsCSS) { + removeTransitionClass(el, startClass); + } + enterCancelledHook && enterCancelledHook(el); + } else { + afterEnterHook && afterEnterHook(el); + } + el._enterCb = null; + }); - function makeUnlinkFn(vm, dirs, context, contextDirs) { - function unlink(destroying) { - teardownDirs(vm, dirs, destroying); - if (context && contextDirs) { - teardownDirs(context, contextDirs); + if (!vnode.data.show) { + // remove pending leave element on enter by injecting an insert hook + mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', function () { + var parent = el.parentNode; + var pendingNode = parent && parent._pending && parent._pending[vnode.key]; + if (pendingNode && pendingNode.tag === vnode.tag && pendingNode.elm._leaveCb) { + pendingNode.elm._leaveCb(); } - } - // expose linked directives - unlink.dirs = dirs; - return unlink; + enterHook && enterHook(el, cb); + }, 'transition-insert'); } - /** - * Teardown partial linked directives. - * - * @param {Vue} vm - * @param {Array} dirs - * @param {Boolean} destroying - */ - - function teardownDirs(vm, dirs, destroying) { - var i = dirs.length; - while (i--) { - dirs[i]._teardown(); - if ('development' !== 'production' && !destroying) { - vm._directives.$remove(dirs[i]); + // start enter transition + beforeEnterHook && beforeEnterHook(el); + if (expectsCSS) { + addTransitionClass(el, startClass); + addTransitionClass(el, activeClass); + nextFrame(function () { + removeTransitionClass(el, startClass); + if (!cb.cancelled && !userWantsControl) { + whenTransitionEnds(el, type, cb); } - } + }); } - /** - * Compile link props on an instance. - * - * @param {Vue} vm - * @param {Element} el - * @param {Object} props - * @param {Object} [scope] - * @return {Function} - */ - - function compileAndLinkProps(vm, el, props, scope) { - var propsLinkFn = compileProps(el, props, vm); - var propDirs = linkAndCapture(function () { - propsLinkFn(vm, scope); - }, vm); - return makeUnlinkFn(vm, propDirs); + if (vnode.data.show) { + enterHook && enterHook(el, cb); } - /** - * Compile the root element of an instance. - * - * 1. attrs on context container (context scope) - * 2. attrs on the component template root node, if - * replace:true (child scope) - * - * If this is a fragment instance, we only need to compile 1. - * - * @param {Element} el - * @param {Object} options - * @param {Object} contextOptions - * @return {Function} - */ - - function compileRoot(el, options, contextOptions) { - var containerAttrs = options._containerAttrs; - var replacerAttrs = options._replacerAttrs; - var contextLinkFn, replacerLinkFn; - - // only need to compile other attributes for - // non-fragment instances - if (el.nodeType !== 11) { - // for components, container and replacer need to be - // compiled separately and linked in different scopes. - if (options._asComponent) { - // 2. container attributes - if (containerAttrs && contextOptions) { - contextLinkFn = compileDirectives(containerAttrs, contextOptions); - } - if (replacerAttrs) { - // 3. replacer attributes - replacerLinkFn = compileDirectives(replacerAttrs, options); - } - } else { - // non-component, just compile as a normal element. - replacerLinkFn = compileDirectives(el.attributes, options); - } - } else if ('development' !== 'production' && containerAttrs) { - // warn container directives for fragment instances - var names = containerAttrs.filter(function (attr) { - // allow vue-loader/vueify scoped css attributes - return attr.name.indexOf('_v-') < 0 && - // allow event listeners - !onRE.test(attr.name) && - // allow slots - attr.name !== 'slot'; - }).map(function (attr) { - return '"' + attr.name + '"'; - }); - if (names.length) { - var plural = names.length > 1; - warn('Attribute' + (plural ? 's ' : ' ') + names.join(', ') + (plural ? ' are' : ' is') + ' ignored on component ' + '<' + options.el.tagName.toLowerCase() + '> because ' + 'the component is a fragment instance: ' + 'http://vuejs.org/guide/components.html#Fragment-Instance'); - } - } - - options._containerAttrs = options._replacerAttrs = null; - return function rootLinkFn(vm, el, scope) { - // link context scope dirs - var context = vm._context; - var contextDirs; - if (context && contextLinkFn) { - contextDirs = linkAndCapture(function () { - contextLinkFn(context, el, null, scope); - }, context); - } + if (!expectsCSS && !userWantsControl) { + cb(); + } +} - // link self - var selfDirs = linkAndCapture(function () { - if (replacerLinkFn) replacerLinkFn(vm, el); - }, vm); +function leave (vnode, rm) { + var el = vnode.elm; - // return the unlink function that tearsdown context - // container directives. - return makeUnlinkFn(vm, selfDirs, context, contextDirs); - }; + // call enter callback now + if (el._enterCb) { + el._enterCb.cancelled = true; + el._enterCb(); } - /** - * Compile a node and return a nodeLinkFn based on the - * node type. - * - * @param {Node} node - * @param {Object} options - * @return {Function|null} - */ + var data = resolveTransition(vnode.data.transition); + if (!data) { + return rm() + } - function compileNode(node, options) { - var type = node.nodeType; - if (type === 1 && !isScript(node)) { - return compileElement(node, options); - } else if (type === 3 && node.data.trim()) { - return compileTextNode(node, options); + /* istanbul ignore if */ + if (el._leaveCb || el.nodeType !== 1) { + return + } + + var css = data.css; + var type = data.type; + var leaveClass = data.leaveClass; + var leaveActiveClass = data.leaveActiveClass; + var beforeLeave = data.beforeLeave; + var leave = data.leave; + var afterLeave = data.afterLeave; + var leaveCancelled = data.leaveCancelled; + var delayLeave = data.delayLeave; + + var expectsCSS = css !== false && !isIE9; + var userWantsControl = + leave && + // leave hook may be a bound method which exposes + // the length of original fn as _length + (leave._length || leave.length) > 1; + + var cb = el._leaveCb = once(function () { + if (el.parentNode && el.parentNode._pending) { + el.parentNode._pending[vnode.key] = null; + } + if (expectsCSS) { + removeTransitionClass(el, leaveActiveClass); + } + if (cb.cancelled) { + if (expectsCSS) { + removeTransitionClass(el, leaveClass); + } + leaveCancelled && leaveCancelled(el); } else { - return null; + rm(); + afterLeave && afterLeave(el); } - } + el._leaveCb = null; + }); - /** - * Compile an element and return a nodeLinkFn. - * - * @param {Element} el - * @param {Object} options - * @return {Function|null} - */ + if (delayLeave) { + delayLeave(performLeave); + } else { + performLeave(); + } - function compileElement(el, options) { - // preprocess textareas. - // textarea treats its text content as the initial value. - // just bind it as an attr directive for value. - if (el.tagName === 'TEXTAREA') { - var tokens = parseText(el.value); - if (tokens) { - el.setAttribute(':value', tokensToExp(tokens)); - el.value = ''; - } - } - var linkFn; - var hasAttrs = el.hasAttributes(); - var attrs = hasAttrs && toArray(el.attributes); - // check terminal directives (for & if) - if (hasAttrs) { - linkFn = checkTerminalDirectives(el, attrs, options); + function performLeave () { + // the delayed leave may have already been cancelled + if (cb.cancelled) { + return } - // check element directives - if (!linkFn) { - linkFn = checkElementDirectives(el, options); + // record leaving element + if (!vnode.data.show) { + (el.parentNode._pending || (el.parentNode._pending = {}))[vnode.key] = vnode; } - // check component - if (!linkFn) { - linkFn = checkComponent(el, options); + beforeLeave && beforeLeave(el); + if (expectsCSS) { + addTransitionClass(el, leaveClass); + addTransitionClass(el, leaveActiveClass); + nextFrame(function () { + removeTransitionClass(el, leaveClass); + if (!cb.cancelled && !userWantsControl) { + whenTransitionEnds(el, type, cb); + } + }); } - // normal directives - if (!linkFn && hasAttrs) { - linkFn = compileDirectives(attrs, options); + leave && leave(el, cb); + if (!expectsCSS && !userWantsControl) { + cb(); } - return linkFn; } +} - /** - * Compile a textNode and return a nodeLinkFn. - * - * @param {TextNode} node - * @param {Object} options - * @return {Function|null} textNodeLinkFn - */ - - function compileTextNode(node, options) { - // skip marked text nodes - if (node._skip) { - return removeText; - } - - var tokens = parseText(node.wholeText); - if (!tokens) { - return null; - } - - // mark adjacent text nodes as skipped, - // because we are using node.wholeText to compile - // all adjacent text nodes together. This fixes - // issues in IE where sometimes it splits up a single - // text node into multiple ones. - var next = node.nextSibling; - while (next && next.nodeType === 3) { - next._skip = true; - next = next.nextSibling; - } - - var frag = document.createDocumentFragment(); - var el, token; - for (var i = 0, l = tokens.length; i < l; i++) { - token = tokens[i]; - el = token.tag ? processTextToken(token, options) : document.createTextNode(token.value); - frag.appendChild(el); +function resolveTransition (def$$1) { + if (!def$$1) { + return + } + /* istanbul ignore else */ + if (typeof def$$1 === 'object') { + var res = {}; + if (def$$1.css !== false) { + extend(res, autoCssTransition(def$$1.name || 'v')); } - return makeTextNodeLinkFn(tokens, frag, options); + extend(res, def$$1); + return res + } else if (typeof def$$1 === 'string') { + return autoCssTransition(def$$1) } +} - /** - * Linker for an skipped text node. - * - * @param {Vue} vm - * @param {Text} node - */ - - function removeText(vm, node) { - remove(node); +var autoCssTransition = cached(function (name) { + return { + enterClass: (name + "-enter"), + leaveClass: (name + "-leave"), + appearClass: (name + "-enter"), + enterActiveClass: (name + "-enter-active"), + leaveActiveClass: (name + "-leave-active"), + appearActiveClass: (name + "-enter-active") } +}); - /** - * Process a single text token. - * - * @param {Object} token - * @param {Object} options - * @return {Node} - */ +function once (fn) { + var called = false; + return function () { + if (!called) { + called = true; + fn(); + } + } +} - function processTextToken(token, options) { - var el; - if (token.oneTime) { - el = document.createTextNode(token.value); +var transition = inBrowser ? { + create: function create (_, vnode) { + if (!vnode.data.show) { + enter(vnode); + } + }, + remove: function remove (vnode, rm) { + /* istanbul ignore else */ + if (!vnode.data.show) { + leave(vnode, rm); } else { - if (token.html) { - el = document.createComment('v-html'); - setTokenType('html'); - } else { - // IE will clean up empty textNodes during - // frag.cloneNode(true), so we have to give it - // something here... - el = document.createTextNode(' '); - setTokenType('text'); - } - } - function setTokenType(type) { - if (token.descriptor) return; - var parsed = parseDirective(token.value); - token.descriptor = { - name: type, - def: directives[type], - expression: parsed.expression, - filters: parsed.filters - }; + rm(); } - return el; } +} : {}; - /** - * Build a function that processes a textNode. - * - * @param {Array<Object>} tokens - * @param {DocumentFragment} frag - */ - - function makeTextNodeLinkFn(tokens, frag) { - return function textNodeLinkFn(vm, el, host, scope) { - var fragClone = frag.cloneNode(true); - var childNodes = toArray(fragClone.childNodes); - var token, value, node; - for (var i = 0, l = tokens.length; i < l; i++) { - token = tokens[i]; - value = token.value; - if (token.tag) { - node = childNodes[i]; - if (token.oneTime) { - value = (scope || vm).$eval(value); - if (token.html) { - replace(node, parseTemplate(value, true)); - } else { - node.data = _toString(value); - } - } else { - vm._bindDir(token.descriptor, node, host, scope); - } - } - } - replace(el, fragClone); - }; - } +var platformModules = [ + attrs, + klass, + events, + domProps, + style, + transition +]; - /** - * Compile a node list and return a childLinkFn. - * - * @param {NodeList} nodeList - * @param {Object} options - * @return {Function|undefined} - */ +/* */ - function compileNodeList(nodeList, options) { - var linkFns = []; - var nodeLinkFn, childLinkFn, node; - for (var i = 0, l = nodeList.length; i < l; i++) { - node = nodeList[i]; - nodeLinkFn = compileNode(node, options); - childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && node.tagName !== 'SCRIPT' && node.hasChildNodes() ? compileNodeList(node.childNodes, options) : null; - linkFns.push(nodeLinkFn, childLinkFn); - } - return linkFns.length ? makeChildLinkFn(linkFns) : null; - } +// the directive module should be applied last, after all +// built-in modules have been applied. +var modules = platformModules.concat(baseModules); - /** - * Make a child link function for a node's childNodes. - * - * @param {Array<Function>} linkFns - * @return {Function} childLinkFn - */ +var patch$1 = createPatchFunction({ nodeOps: nodeOps, modules: modules }); - function makeChildLinkFn(linkFns) { - return function childLinkFn(vm, nodes, host, scope, frag) { - var node, nodeLinkFn, childrenLinkFn; - for (var i = 0, n = 0, l = linkFns.length; i < l; n++) { - node = nodes[n]; - nodeLinkFn = linkFns[i++]; - childrenLinkFn = linkFns[i++]; - // cache childNodes before linking parent, fix #657 - var childNodes = toArray(node.childNodes); - if (nodeLinkFn) { - nodeLinkFn(vm, node, host, scope, frag); - } - if (childrenLinkFn) { - childrenLinkFn(vm, childNodes, host, scope, frag); - } - } - }; - } +/** + * Not type checking this file because flow doesn't like attaching + * properties to Elements. + */ - /** - * Check for element directives (custom elements that should - * be resovled as terminal directives). - * - * @param {Element} el - * @param {Object} options - */ +var modelableTagRE = /^input|select|textarea|vue-component-[0-9]+(-[0-9a-zA-Z_\-]*)?$/; - function checkElementDirectives(el, options) { - var tag = el.tagName.toLowerCase(); - if (commonTagRE.test(tag)) { - return; +/* istanbul ignore if */ +if (isIE9) { + // http://www.matts411.com/post/internet-explorer-9-oninput/ + document.addEventListener('selectionchange', function () { + var el = document.activeElement; + if (el && el.vmodel) { + trigger(el, 'input'); } - var def = resolveAsset(options, 'elementDirectives', tag); - if (def) { - return makeTerminalNodeLinkFn(el, tag, '', options, def); + }); +} + +var model = { + inserted: function inserted (el, binding, vnode) { + { + if (!modelableTagRE.test(vnode.tag)) { + warn( + "v-model is not supported on element type: <" + (vnode.tag) + ">. " + + 'If you are working with contenteditable, it\'s recommended to ' + + 'wrap a library dedicated for that purpose inside a custom component.', + vnode.context + ); + } } - } - - /** - * Check if an element is a component. If yes, return - * a component link function. - * - * @param {Element} el - * @param {Object} options - * @return {Function|undefined} - */ - - function checkComponent(el, options) { - var component = checkComponentAttr(el, options); - if (component) { - var ref = findRef(el); - var descriptor = { - name: 'component', - ref: ref, - expression: component.id, - def: internalDirectives.component, - modifiers: { - literal: !component.dynamic - } - }; - var componentLinkFn = function componentLinkFn(vm, el, host, scope, frag) { - if (ref) { - defineReactive((scope || vm).$refs, ref, null); - } - vm._bindDir(descriptor, el, host, scope, frag); + if (vnode.tag === 'select') { + var cb = function () { + setSelected(el, binding, vnode.context); }; - componentLinkFn.terminal = true; - return componentLinkFn; - } - } - - /** - * Check an element for terminal directives in fixed order. - * If it finds one, return a terminal link function. - * - * @param {Element} el - * @param {Array} attrs - * @param {Object} options - * @return {Function} terminalLinkFn - */ - - function checkTerminalDirectives(el, attrs, options) { - // skip v-pre - if (getAttr(el, 'v-pre') !== null) { - return skip; - } - // skip v-else block, but only if following v-if - if (el.hasAttribute('v-else')) { - var prev = el.previousElementSibling; - if (prev && prev.hasAttribute('v-if')) { - return skip; - } - } - - var attr, name, value, modifiers, matched, dirName, rawName, arg, def, termDef; - for (var i = 0, j = attrs.length; i < j; i++) { - attr = attrs[i]; - name = attr.name.replace(modifierRE, ''); - if (matched = name.match(dirAttrRE)) { - def = resolveAsset(options, 'directives', matched[1]); - if (def && def.terminal) { - if (!termDef || (def.priority || DEFAULT_TERMINAL_PRIORITY) > termDef.priority) { - termDef = def; - rawName = attr.name; - modifiers = parseModifiers(attr.name); - value = attr.value; - dirName = matched[1]; - arg = matched[2]; - } + cb(); + /* istanbul ignore if */ + if (isIE || isEdge) { + setTimeout(cb, 0); + } + } else if ( + (vnode.tag === 'textarea' || el.type === 'text') && + !binding.modifiers.lazy + ) { + if (!isAndroid) { + el.addEventListener('compositionstart', onCompositionStart); + el.addEventListener('compositionend', onCompositionEnd); + } + /* istanbul ignore if */ + if (isIE9) { + el.vmodel = true; + } + } + }, + componentUpdated: function componentUpdated (el, binding, vnode) { + if (vnode.tag === 'select') { + setSelected(el, binding, vnode.context); + // in case the options rendered by v-for have changed, + // it's possible that the value is out-of-sync with the rendered options. + // detect such cases and filter out values that no longer has a matchig + // option in the DOM. + var needReset = el.multiple + ? binding.value.some(function (v) { return hasNoMatchingOption(v, el.options); }) + : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, el.options); + if (needReset) { + trigger(el, 'change'); + } + } + } +}; + +function setSelected (el, binding, vm) { + var value = binding.value; + var isMultiple = el.multiple; + if (isMultiple && !Array.isArray(value)) { + "development" !== 'production' && warn( + "<select multiple v-model=\"" + (binding.expression) + "\"> " + + "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)), + vm + ); + return + } + var selected, option; + for (var i = 0, l = el.options.length; i < l; i++) { + option = el.options[i]; + if (isMultiple) { + selected = looseIndexOf(value, getValue(option)) > -1; + if (option.selected !== selected) { + option.selected = selected; + } + } else { + if (looseEqual(getValue(option), value)) { + if (el.selectedIndex !== i) { + el.selectedIndex = i; } + return } } + } + if (!isMultiple) { + el.selectedIndex = -1; + } +} - if (termDef) { - return makeTerminalNodeLinkFn(el, dirName, value, options, termDef, rawName, arg, modifiers); +function hasNoMatchingOption (value, options) { + for (var i = 0, l = options.length; i < l; i++) { + if (looseEqual(getValue(options[i]), value)) { + return false } } + return true +} - function skip() {} - skip.terminal = true; +function getValue (option) { + return '_value' in option + ? option._value + : option.value +} - /** - * Build a node link function for a terminal directive. - * A terminal link function terminates the current - * compilation recursion and handles compilation of the - * subtree in the directive. - * - * @param {Element} el - * @param {String} dirName - * @param {String} value - * @param {Object} options - * @param {Object} def - * @param {String} [rawName] - * @param {String} [arg] - * @param {Object} [modifiers] - * @return {Function} terminalLinkFn - */ +function onCompositionStart (e) { + e.target.composing = true; +} - function makeTerminalNodeLinkFn(el, dirName, value, options, def, rawName, arg, modifiers) { - var parsed = parseDirective(value); - var descriptor = { - name: dirName, - arg: arg, - expression: parsed.expression, - filters: parsed.filters, - raw: value, - attr: rawName, - modifiers: modifiers, - def: def - }; - // check ref for v-for and router-view - if (dirName === 'for' || dirName === 'router-view') { - descriptor.ref = findRef(el); - } - var fn = function terminalNodeLinkFn(vm, el, host, scope, frag) { - if (descriptor.ref) { - defineReactive((scope || vm).$refs, descriptor.ref, null); - } - vm._bindDir(descriptor, el, host, scope, frag); - }; - fn.terminal = true; - return fn; - } +function onCompositionEnd (e) { + e.target.composing = false; + trigger(e.target, 'input'); +} - /** - * Compile the directives on an element and return a linker. - * - * @param {Array|NamedNodeMap} attrs - * @param {Object} options - * @return {Function} - */ +function trigger (el, type) { + var e = document.createEvent('HTMLEvents'); + e.initEvent(type, true, true); + el.dispatchEvent(e); +} - function compileDirectives(attrs, options) { - var i = attrs.length; - var dirs = []; - var attr, name, value, rawName, rawValue, dirName, arg, modifiers, dirDef, tokens, matched; - while (i--) { - attr = attrs[i]; - name = rawName = attr.name; - value = rawValue = attr.value; - tokens = parseText(value); - // reset arg - arg = null; - // check modifiers - modifiers = parseModifiers(name); - name = name.replace(modifierRE, ''); - - // attribute interpolations - if (tokens) { - value = tokensToExp(tokens); - arg = name; - pushDir('bind', directives.bind, tokens); - // warn against mixing mustaches with v-bind - if ('development' !== 'production') { - if (name === 'class' && Array.prototype.some.call(attrs, function (attr) { - return attr.name === ':class' || attr.name === 'v-bind:class'; - })) { - warn('class="' + rawValue + '": Do not mix mustache interpolation ' + 'and v-bind for "class" on the same element. Use one or the other.', options); - } - } - } else - - // special attribute: transition - if (transitionRE.test(name)) { - modifiers.literal = !bindRE.test(name); - pushDir('transition', internalDirectives.transition); - } else - - // event handlers - if (onRE.test(name)) { - arg = name.replace(onRE, ''); - pushDir('on', directives.on); - } else - - // attribute bindings - if (bindRE.test(name)) { - dirName = name.replace(bindRE, ''); - if (dirName === 'style' || dirName === 'class') { - pushDir(dirName, internalDirectives[dirName]); - } else { - arg = dirName; - pushDir('bind', directives.bind); - } - } else - - // normal directives - if (matched = name.match(dirAttrRE)) { - dirName = matched[1]; - arg = matched[2]; - - // skip v-else (when used with v-show) - if (dirName === 'else') { - continue; - } - - dirDef = resolveAsset(options, 'directives', dirName, true); - if (dirDef) { - pushDir(dirName, dirDef); - } - } - } +/* */ - /** - * Push a directive. - * - * @param {String} dirName - * @param {Object|Function} def - * @param {Array} [interpTokens] - */ - - function pushDir(dirName, def, interpTokens) { - var hasOneTimeToken = interpTokens && hasOneTime(interpTokens); - var parsed = !hasOneTimeToken && parseDirective(value); - dirs.push({ - name: dirName, - attr: rawName, - raw: rawValue, - def: def, - arg: arg, - modifiers: modifiers, - // conversion from interpolation strings with one-time token - // to expression is differed until directive bind time so that we - // have access to the actual vm context for one-time bindings. - expression: parsed && parsed.expression, - filters: parsed && parsed.filters, - interp: interpTokens, - hasOneTime: hasOneTimeToken - }); - } +// recursively search for possible transition defined inside the component root +function locateNode (vnode) { + return vnode.child && (!vnode.data || !vnode.data.transition) + ? locateNode(vnode.child._vnode) + : vnode +} - if (dirs.length) { - return makeNodeLinkFn(dirs); - } - } +var show = { + bind: function bind (el, ref, vnode) { + var value = ref.value; - /** - * Parse modifiers from directive attribute name. - * - * @param {String} name - * @return {Object} - */ + vnode = locateNode(vnode); + var transition = vnode.data && vnode.data.transition; + if (value && transition && !isIE9) { + enter(vnode); + } + var originalDisplay = el.style.display === 'none' ? '' : el.style.display; + el.style.display = value ? originalDisplay : 'none'; + el.__vOriginalDisplay = originalDisplay; + }, + update: function update (el, ref, vnode) { + var value = ref.value; + var oldValue = ref.oldValue; - function parseModifiers(name) { - var res = Object.create(null); - var match = name.match(modifierRE); - if (match) { - var i = match.length; - while (i--) { - res[match[i].slice(1)] = true; + /* istanbul ignore if */ + if (value === oldValue) { return } + vnode = locateNode(vnode); + var transition = vnode.data && vnode.data.transition; + if (transition && !isIE9) { + if (value) { + enter(vnode); + el.style.display = el.__vOriginalDisplay; + } else { + leave(vnode, function () { + el.style.display = 'none'; + }); } - } - return res; + } else { + el.style.display = value ? el.__vOriginalDisplay : 'none'; + } + } +}; + +var platformDirectives = { + model: model, + show: show +}; + +/* */ + +// Provides transition support for a single element/component. +// supports transition mode (out-in / in-out) + +var transitionProps = { + name: String, + appear: Boolean, + css: Boolean, + mode: String, + type: String, + enterClass: String, + leaveClass: String, + enterActiveClass: String, + leaveActiveClass: String, + appearClass: String, + appearActiveClass: String +}; + +// in case the child is also an abstract component, e.g. <keep-alive> +// we want to recrusively retrieve the real component to be rendered +function getRealChild (vnode) { + var compOptions = vnode && vnode.componentOptions; + if (compOptions && compOptions.Ctor.options.abstract) { + return getRealChild(getFirstComponentChild(compOptions.children)) + } else { + return vnode } +} - /** - * Build a link function for all directives on a single node. - * - * @param {Array} directives - * @return {Function} directivesLinkFn - */ - - function makeNodeLinkFn(directives) { - return function nodeLinkFn(vm, el, host, scope, frag) { - // reverse apply because it's sorted low to high - var i = directives.length; - while (i--) { - vm._bindDir(directives[i], el, host, scope, frag); - } - }; +function extractTransitionData (comp) { + var data = {}; + var options = comp.$options; + // props + for (var key in options.propsData) { + data[key] = comp[key]; + } + // events. + // extract listeners and pass them directly to the transition methods + var listeners = options._parentListeners; + for (var key$1 in listeners) { + data[camelize(key$1)] = listeners[key$1].fn; } + return data +} - /** - * Check if an interpolation string contains one-time tokens. - * - * @param {Array} tokens - * @return {Boolean} - */ +function placeholder (h, rawChild) { + return /\d-keep-alive$/.test(rawChild.tag) + ? h('keep-alive') + : null +} - function hasOneTime(tokens) { - var i = tokens.length; - while (i--) { - if (tokens[i].oneTime) return true; +function hasParentTransition (vnode) { + while ((vnode = vnode.parent)) { + if (vnode.data.transition) { + return true } } +} - function isScript(el) { - return el.tagName === 'SCRIPT' && (!el.hasAttribute('type') || el.getAttribute('type') === 'text/javascript'); - } - - var specialCharRE = /[^\w\-:\.]/; +var Transition = { + name: 'transition', + props: transitionProps, + abstract: true, + render: function render (h) { + var this$1 = this; - /** - * Process an element or a DocumentFragment based on a - * instance option object. This allows us to transclude - * a template node/fragment before the instance is created, - * so the processed fragment can then be cloned and reused - * in v-for. - * - * @param {Element} el - * @param {Object} options - * @return {Element|DocumentFragment} - */ - - function transclude(el, options) { - // extract container attributes to pass them down - // to compiler, because they need to be compiled in - // parent scope. we are mutating the options object here - // assuming the same object will be used for compile - // right after this. - if (options) { - options._containerAttrs = extractAttrs(el); + var children = this.$slots.default; + if (!children) { + return } - // for template tags, what we want is its content as - // a documentFragment (for fragment instances) - if (isTemplate(el)) { - el = parseTemplate(el); - } - if (options) { - if (options._asComponent && !options.template) { - options.template = '<slot></slot>'; - } - if (options.template) { - options._content = extractContent(el); - el = transcludeTemplate(el, options); - } + + // filter out text nodes (possible whitespaces) + children = children.filter(function (c) { return c.tag; }); + /* istanbul ignore if */ + if (!children.length) { + return } - if (isFragment(el)) { - // anchors for fragment instance - // passing in `persist: true` to avoid them being - // discarded by IE during template cloning - prepend(createAnchor('v-start', true), el); - el.appendChild(createAnchor('v-end', true)); + + // warn multiple elements + if ("development" !== 'production' && children.length > 1) { + warn( + '<transition> can only be used on a single element. Use ' + + '<transition-group> for lists.', + this.$parent + ); } - return el; - } - /** - * Process the template option. - * If the replace option is true this will swap the $el. - * - * @param {Element} el - * @param {Object} options - * @return {Element|DocumentFragment} - */ + var mode = this.mode; - function transcludeTemplate(el, options) { - var template = options.template; - var frag = parseTemplate(template, true); - if (frag) { - var replacer = frag.firstChild; - var tag = replacer.tagName && replacer.tagName.toLowerCase(); - if (options.replace) { - /* istanbul ignore if */ - if (el === document.body) { - 'development' !== 'production' && warn('You are mounting an instance with a template to ' + '<body>. This will replace <body> entirely. You ' + 'should probably use `replace: false` here.'); - } - // there are many cases where the instance must - // become a fragment instance: basically anything that - // can create more than 1 root nodes. - if ( - // multi-children template - frag.childNodes.length > 1 || - // non-element template - replacer.nodeType !== 1 || - // single nested component - tag === 'component' || resolveAsset(options, 'components', tag) || hasBindAttr(replacer, 'is') || - // element directive - resolveAsset(options, 'elementDirectives', tag) || - // for block - replacer.hasAttribute('v-for') || - // if block - replacer.hasAttribute('v-if')) { - return frag; - } else { - options._replacerAttrs = extractAttrs(replacer); - mergeAttrs(el, replacer); - return replacer; - } - } else { - el.appendChild(frag); - return el; - } - } else { - 'development' !== 'production' && warn('Invalid template option: ' + template); + // warn invalid mode + if ("development" !== 'production' && + mode && mode !== 'in-out' && mode !== 'out-in') { + warn( + 'invalid <transition> mode: ' + mode, + this.$parent + ); } - } - /** - * Helper to extract a component container's attributes - * into a plain object array. - * - * @param {Element} el - * @return {Array} - */ + var rawChild = children[0]; - function extractAttrs(el) { - if (el.nodeType === 1 && el.hasAttributes()) { - return toArray(el.attributes); + // if this is a component root node and the component's + // parent container node also has transition, skip. + if (hasParentTransition(this.$vnode)) { + return rawChild } - } - /** - * Merge the attributes of two elements, and make sure - * the class names are merged properly. - * - * @param {Element} from - * @param {Element} to - */ - - function mergeAttrs(from, to) { - var attrs = from.attributes; - var i = attrs.length; - var name, value; - while (i--) { - name = attrs[i].name; - value = attrs[i].value; - if (!to.hasAttribute(name) && !specialCharRE.test(name)) { - to.setAttribute(name, value); - } else if (name === 'class' && !parseText(value) && (value = value.trim())) { - value.split(/\s+/).forEach(function (cls) { - addClass(to, cls); - }); + // apply transition data to child + // use getRealChild() to ignore abstract components e.g. keep-alive + var child = getRealChild(rawChild); + /* istanbul ignore if */ + if (!child) { + return rawChild + } + + if (this._leaving) { + return placeholder(h, rawChild) + } + + var key = child.key = child.key == null || child.isStatic + ? ("__v" + (child.tag + this._uid) + "__") + : child.key; + var data = (child.data || (child.data = {})).transition = extractTransitionData(this); + var oldRawChild = this._vnode; + var oldChild = getRealChild(oldRawChild); + + // mark v-show + // so that the transition module can hand over the control to the directive + if (child.data.directives && child.data.directives.some(function (d) { return d.name === 'show'; })) { + child.data.show = true; + } + + if (oldChild && oldChild.data && oldChild.key !== key) { + // replace old child transition data with fresh one + // important for dynamic transitions! + var oldData = oldChild.data.transition = extend({}, data); + + // handle transition mode + if (mode === 'out-in') { + // return placeholder node and queue update when leave finishes + this._leaving = true; + mergeVNodeHook(oldData, 'afterLeave', function () { + this$1._leaving = false; + this$1.$forceUpdate(); + }, key); + return placeholder(h, rawChild) + } else if (mode === 'in-out') { + var delayedLeave; + var performLeave = function () { delayedLeave(); }; + mergeVNodeHook(data, 'afterEnter', performLeave, key); + mergeVNodeHook(data, 'enterCancelled', performLeave, key); + mergeVNodeHook(oldData, 'delayLeave', function (leave) { + delayedLeave = leave; + }, key); + } + } + + return rawChild + } +}; + +/* */ + +// Provides transition support for list items. +// supports move transitions using the FLIP technique. + +// Because the vdom's children update algorithm is "unstable" - i.e. +// it doesn't guarantee the relative positioning of removed elements, +// we force transition-group to update its children into two passes: +// in the first pass, we remove all nodes that need to be removed, +// triggering their leaving transition; in the second pass, we insert/move +// into the final disired state. This way in the second pass removed +// nodes will remain where they should be. + +var props = extend({ + tag: String, + moveClass: String +}, transitionProps); + +delete props.mode; + +var TransitionGroup = { + props: props, + + render: function render (h) { + var tag = this.tag || this.$vnode.data.tag || 'span'; + var map = Object.create(null); + var prevChildren = this.prevChildren = this.children; + var rawChildren = this.$slots.default || []; + var children = this.children = []; + var transitionData = extractTransitionData(this); + + for (var i = 0; i < rawChildren.length; i++) { + var c = rawChildren[i]; + if (c.tag) { + if (c.key != null && String(c.key).indexOf('__vlist') !== 0) { + children.push(c); + map[c.key] = c + ;(c.data || (c.data = {})).transition = transitionData; + } else { + var opts = c.componentOptions; + var name = opts + ? (opts.Ctor.options.name || opts.tag) + : c.tag; + warn(("<transition-group> children must be keyed: <" + name + ">")); + } } } - } - - /** - * Scan and determine slot content distribution. - * We do this during transclusion instead at compile time so that - * the distribution is decoupled from the compilation order of - * the slots. - * - * @param {Element|DocumentFragment} template - * @param {Element} content - * @param {Vue} vm - */ - function resolveSlots(vm, content) { - if (!content) { - return; - } - var contents = vm._slotContents = Object.create(null); - var el, name; - for (var i = 0, l = content.children.length; i < l; i++) { - el = content.children[i]; - /* eslint-disable no-cond-assign */ - if (name = el.getAttribute('slot')) { - (contents[name] || (contents[name] = [])).push(el); + if (prevChildren) { + var kept = []; + var removed = []; + for (var i$1 = 0; i$1 < prevChildren.length; i$1++) { + var c$1 = prevChildren[i$1]; + c$1.data.transition = transitionData; + c$1.data.pos = c$1.elm.getBoundingClientRect(); + if (map[c$1.key]) { + kept.push(c$1); + } else { + removed.push(c$1); + } + } + this.kept = h(tag, null, kept); + this.removed = removed; + } + + return h(tag, null, children) + }, + + beforeUpdate: function beforeUpdate () { + // force removing pass + this.__patch__( + this._vnode, + this.kept, + false, // hydrating + true // removeOnly (!important, avoids unnecessary moves) + ); + this._vnode = this.kept; + }, + + updated: function updated () { + var children = this.prevChildren; + var moveClass = this.moveClass || (this.name + '-move'); + if (!children.length || !this.hasMove(children[0].elm, moveClass)) { + return + } + + // we divide the work into three loops to avoid mixing DOM reads and writes + // in each iteration - which helps prevent layout thrashing. + children.forEach(callPendingCbs); + children.forEach(recordPosition); + children.forEach(applyTranslation); + + // force reflow to put everything in position + var f = document.body.offsetHeight; // eslint-disable-line + + children.forEach(function (c) { + if (c.data.moved) { + var el = c.elm; + var s = el.style; + addTransitionClass(el, moveClass); + s.transform = s.WebkitTransform = s.transitionDuration = ''; + el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) { + if (!e || /transform$/.test(e.propertyName)) { + el.removeEventListener(transitionEndEvent, cb); + el._moveCb = null; + removeTransitionClass(el, moveClass); + } + }); } - /* eslint-enable no-cond-assign */ - if ('development' !== 'production' && getBindAttr(el, 'slot')) { - warn('The "slot" attribute must be static.', vm.$parent); + }); + }, + + methods: { + hasMove: function hasMove (el, moveClass) { + /* istanbul ignore if */ + if (!hasTransition) { + return false } - } - for (name in contents) { - contents[name] = extractFragment(contents[name], content); - } - if (content.hasChildNodes()) { - var nodes = content.childNodes; - if (nodes.length === 1 && nodes[0].nodeType === 3 && !nodes[0].data.trim()) { - return; + if (this._hasMove != null) { + return this._hasMove } - contents['default'] = extractFragment(content.childNodes, content); + addTransitionClass(el, moveClass); + var info = getTransitionInfo(el); + removeTransitionClass(el, moveClass); + return (this._hasMove = info.hasTransform) } } +}; - /** - * Extract qualified content nodes from a node list. - * - * @param {NodeList} nodes - * @return {DocumentFragment} - */ - - function extractFragment(nodes, parent) { - var frag = document.createDocumentFragment(); - nodes = toArray(nodes); - for (var i = 0, l = nodes.length; i < l; i++) { - var node = nodes[i]; - if (isTemplate(node) && !node.hasAttribute('v-if') && !node.hasAttribute('v-for')) { - parent.removeChild(node); - node = parseTemplate(node, true); - } - frag.appendChild(node); +function callPendingCbs (c) { + /* istanbul ignore if */ + if (c.elm._moveCb) { + c.elm._moveCb(); + } + /* istanbul ignore if */ + if (c.elm._enterCb) { + c.elm._enterCb(); + } +} + +function recordPosition (c) { + c.data.newPos = c.elm.getBoundingClientRect(); +} + +function applyTranslation (c) { + var oldPos = c.data.pos; + var newPos = c.data.newPos; + var dx = oldPos.left - newPos.left; + var dy = oldPos.top - newPos.top; + if (dx || dy) { + c.data.moved = true; + var s = c.elm.style; + s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)"; + s.transitionDuration = '0s'; + } +} + +var platformComponents = { + Transition: Transition, + TransitionGroup: TransitionGroup +}; + +/* */ + +// install platform specific utils +Vue$3.config.isUnknownElement = isUnknownElement; +Vue$3.config.isReservedTag = isReservedTag; +Vue$3.config.getTagNamespace = getTagNamespace; +Vue$3.config.mustUseProp = mustUseProp; + +// install platform runtime directives & components +extend(Vue$3.options.directives, platformDirectives); +extend(Vue$3.options.components, platformComponents); + +// install platform patch function +Vue$3.prototype.__patch__ = config._isServer ? noop : patch$1; + +// wrap mount +Vue$3.prototype.$mount = function ( + el, + hydrating +) { + el = el && !config._isServer ? query(el) : undefined; + return this._mount(el, hydrating) +}; + +// devtools global hook +/* istanbul ignore next */ +setTimeout(function () { + if (config.devtools) { + if (devtools) { + devtools.emit('init', Vue$3); + } else if ( + "development" !== 'production' && + inBrowser && /Chrome\/\d+/.test(window.navigator.userAgent) + ) { + console.log( + 'Download the Vue Devtools for a better development experience:\n' + + 'https://github.com/vuejs/vue-devtools' + ); } - return frag; } +}, 0); +/* */ +// check whether current browser encodes a char inside attribute values +function shouldDecode (content, encoded) { + var div = document.createElement('div'); + div.innerHTML = "<div a=\"" + content + "\">"; + return div.innerHTML.indexOf(encoded) > 0 +} - var compiler = Object.freeze({ - compile: compile, - compileAndLinkProps: compileAndLinkProps, - compileRoot: compileRoot, - transclude: transclude, - resolveSlots: resolveSlots - }); +// #3663 +// IE encodes newlines inside attribute values while other browsers don't +var shouldDecodeNewlines = inBrowser ? shouldDecode('\n', ' ') : false; - function stateMixin (Vue) { - /** - * Accessor for `$data` property, since setting $data - * requires observing the new object and updating - * proxied properties. - */ - - Object.defineProperty(Vue.prototype, '$data', { - get: function get() { - return this._data; - }, - set: function set(newData) { - if (newData !== this._data) { - this._setData(newData); - } - } - }); +/* */ - /** - * Setup the scope of an instance, which contains: - * - observed data - * - computed properties - * - user methods - * - meta properties - */ - - Vue.prototype._initState = function () { - this._initProps(); - this._initMeta(); - this._initMethods(); - this._initData(); - this._initComputed(); - }; +var decoder = document.createElement('div'); - /** - * Initialize props. - */ - - Vue.prototype._initProps = function () { - var options = this.$options; - var el = options.el; - var props = options.props; - if (props && !el) { - 'development' !== 'production' && warn('Props will not be compiled if no `el` option is ' + 'provided at instantiation.', this); - } - // make sure to convert string selectors into element now - el = options.el = query(el); - this._propsUnlinkFn = el && el.nodeType === 1 && props - // props must be linked in proper scope if inside v-for - ? compileAndLinkProps(this, el, props, this._scope) : null; - }; +function decode (html) { + decoder.innerHTML = html; + return decoder.textContent +} - /** - * Initialize the data. - */ - - Vue.prototype._initData = function () { - var dataFn = this.$options.data; - var data = this._data = dataFn ? dataFn() : {}; - if (!isPlainObject(data)) { - data = {}; - 'development' !== 'production' && warn('data functions should return an object.', this); - } - var props = this._props; - // proxy data on instance - var keys = Object.keys(data); - var i, key; - i = keys.length; - while (i--) { - key = keys[i]; - // there are two scenarios where we can proxy a data key: - // 1. it's not already defined as a prop - // 2. it's provided via a instantiation option AND there are no - // template prop present - if (!props || !hasOwn(props, key)) { - this._proxy(key); - } else if ('development' !== 'production') { - warn('Data field "' + key + '" is already defined ' + 'as a prop. To provide default value for a prop, use the "default" ' + 'prop option; if you want to pass prop values to an instantiation ' + 'call, use the "propsData" option.', this); - } - } - // observe data - observe(data, this); - }; +/** + * Not type-checking this file because it's mostly vendor code. + */ - /** - * Swap the instance's $data. Called in $data's setter. - * - * @param {Object} newData - */ - - Vue.prototype._setData = function (newData) { - newData = newData || {}; - var oldData = this._data; - this._data = newData; - var keys, key, i; - // unproxy keys not present in new data - keys = Object.keys(oldData); - i = keys.length; - while (i--) { - key = keys[i]; - if (!(key in newData)) { - this._unproxy(key); - } - } - // proxy keys not already proxied, - // and trigger change for changed values - keys = Object.keys(newData); - i = keys.length; - while (i--) { - key = keys[i]; - if (!hasOwn(this, key)) { - // new property - this._proxy(key); - } - } - oldData.__ob__.removeVm(this); - observe(newData, this); - this._digest(); - }; +/*! + * HTML Parser By John Resig (ejohn.org) + * Modified by Juriy "kangax" Zaytsev + * Original code by Erik Arvidsson, Mozilla Public License + * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js + */ - /** - * Proxy a property, so that - * vm.prop === vm._data.prop - * - * @param {String} key - */ - - Vue.prototype._proxy = function (key) { - if (!isReserved(key)) { - // need to store ref to self here - // because these getter/setters might - // be called by child scopes via - // prototype inheritance. - var self = this; - Object.defineProperty(self, key, { - configurable: true, - enumerable: true, - get: function proxyGetter() { - return self._data[key]; - }, - set: function proxySetter(val) { - self._data[key] = val; +// Regular Expressions for parsing tags and attributes +var singleAttrIdentifier = /([^\s"'<>\/=]+)/; +var singleAttrAssign = /(?:=)/; +var singleAttrValues = [ + // attr value double quotes + /"([^"]*)"+/.source, + // attr value, single quotes + /'([^']*)'+/.source, + // attr value, no quotes + /([^\s"'=<>`]+)/.source +]; +var attribute = new RegExp( + '^\\s*' + singleAttrIdentifier.source + + '(?:\\s*(' + singleAttrAssign.source + ')' + + '\\s*(?:' + singleAttrValues.join('|') + '))?' +); + +// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName +// but for Vue templates we can enforce a simple charset +var ncname = '[a-zA-Z_][\\w\\-\\.]*'; +var qnameCapture = '((?:' + ncname + '\\:)?' + ncname + ')'; +var startTagOpen = new RegExp('^<' + qnameCapture); +var startTagClose = /^\s*(\/?)>/; +var endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>'); +var doctype = /^<!DOCTYPE [^>]+>/i; + +var IS_REGEX_CAPTURING_BROKEN = false; +'x'.replace(/x(.)?/g, function (m, g) { + IS_REGEX_CAPTURING_BROKEN = g === ''; +}); + +// Special Elements (can contain anything) +var isSpecialTag = makeMap('script,style', true); + +var reCache = {}; + +var ltRE = /</g; +var gtRE = />/g; +var nlRE = / /g; +var ampRE = /&/g; +var quoteRE = /"/g; + +function decodeAttr (value, shouldDecodeNewlines) { + if (shouldDecodeNewlines) { + value = value.replace(nlRE, '\n'); + } + return value + .replace(ltRE, '<') + .replace(gtRE, '>') + .replace(ampRE, '&') + .replace(quoteRE, '"') +} + +function parseHTML (html, options) { + var stack = []; + var expectHTML = options.expectHTML; + var isUnaryTag$$1 = options.isUnaryTag || no; + var index = 0; + var last, lastTag; + while (html) { + last = html; + // Make sure we're not in a script or style element + if (!lastTag || !isSpecialTag(lastTag)) { + var textEnd = html.indexOf('<'); + if (textEnd === 0) { + // Comment: + if (/^<!--/.test(html)) { + var commentEnd = html.indexOf('-->'); + + if (commentEnd >= 0) { + advance(commentEnd + 3); + continue } - }); - } - }; - - /** - * Unproxy a property. - * - * @param {String} key - */ - - Vue.prototype._unproxy = function (key) { - if (!isReserved(key)) { - delete this[key]; - } - }; - - /** - * Force update on every watcher in scope. - */ + } - Vue.prototype._digest = function () { - for (var i = 0, l = this._watchers.length; i < l; i++) { - this._watchers[i].update(true); // shallow updates - } - }; + // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment + if (/^<!\[/.test(html)) { + var conditionalEnd = html.indexOf(']>'); - /** - * Setup computed properties. They are essentially - * special getter/setters - */ - - function noop() {} - Vue.prototype._initComputed = function () { - var computed = this.$options.computed; - if (computed) { - for (var key in computed) { - var userDef = computed[key]; - var def = { - enumerable: true, - configurable: true - }; - if (typeof userDef === 'function') { - def.get = makeComputedGetter(userDef, this); - def.set = noop; - } else { - def.get = userDef.get ? userDef.cache !== false ? makeComputedGetter(userDef.get, this) : bind(userDef.get, this) : noop; - def.set = userDef.set ? bind(userDef.set, this) : noop; + if (conditionalEnd >= 0) { + advance(conditionalEnd + 2); + continue } - Object.defineProperty(this, key, def); } - } - }; - function makeComputedGetter(getter, owner) { - var watcher = new Watcher(owner, getter, null, { - lazy: true - }); - return function computedGetter() { - if (watcher.dirty) { - watcher.evaluate(); + // Doctype: + var doctypeMatch = html.match(doctype); + if (doctypeMatch) { + advance(doctypeMatch[0].length); + continue } - if (Dep.target) { - watcher.depend(); - } - return watcher.value; - }; - } - /** - * Setup instance methods. Methods must be bound to the - * instance since they might be passed down as a prop to - * child components. - */ - - Vue.prototype._initMethods = function () { - var methods = this.$options.methods; - if (methods) { - for (var key in methods) { - this[key] = bind(methods[key], this); + // End tag: + var endTagMatch = html.match(endTag); + if (endTagMatch) { + var curIndex = index; + advance(endTagMatch[0].length); + parseEndTag(endTagMatch[0], endTagMatch[1], curIndex, index); + continue } - } - }; - - /** - * Initialize meta information like $index, $key & $value. - */ - Vue.prototype._initMeta = function () { - var metas = this.$options._meta; - if (metas) { - for (var key in metas) { - defineReactive(this, key, metas[key]); + // Start tag: + var startTagMatch = parseStartTag(); + if (startTagMatch) { + handleStartTag(startTagMatch); + continue } } - }; - } - - var eventRE = /^v-on:|^@/; - - function eventsMixin (Vue) { - /** - * Setup the instance's option events & watchers. - * If the value is a string, we pull it from the - * instance's methods by name. - */ - - Vue.prototype._initEvents = function () { - var options = this.$options; - if (options._asComponent) { - registerComponentEvents(this, options.el); - } - registerCallbacks(this, '$on', options.events); - registerCallbacks(this, '$watch', options.watch); - }; - /** - * Register v-on events on a child component - * - * @param {Vue} vm - * @param {Element} el - */ - - function registerComponentEvents(vm, el) { - var attrs = el.attributes; - var name, value, handler; - for (var i = 0, l = attrs.length; i < l; i++) { - name = attrs[i].name; - if (eventRE.test(name)) { - name = name.replace(eventRE, ''); - // force the expression into a statement so that - // it always dynamically resolves the method to call (#2670) - // kinda ugly hack, but does the job. - value = attrs[i].value; - if (isSimplePath(value)) { - value += '.apply(this, $arguments)'; - } - handler = (vm._scope || vm._context).$eval(value, true); - handler._fromParent = true; - vm.$on(name.replace(eventRE), handler); - } + var text = void 0; + if (textEnd >= 0) { + text = html.substring(0, textEnd); + advance(textEnd); + } else { + text = html; + html = ''; } - } - /** - * Register callbacks for option events and watchers. - * - * @param {Vue} vm - * @param {String} action - * @param {Object} hash - */ - - function registerCallbacks(vm, action, hash) { - if (!hash) return; - var handlers, key, i, j; - for (key in hash) { - handlers = hash[key]; - if (isArray(handlers)) { - for (i = 0, j = handlers.length; i < j; i++) { - register(vm, action, key, handlers[i]); - } - } else { - register(vm, action, key, handlers); - } + if (options.chars) { + options.chars(text); } + } else { + var stackedTag = lastTag.toLowerCase(); + var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i')); + var endTagLength = 0; + var rest = html.replace(reStackedTag, function (all, text, endTag) { + endTagLength = endTag.length; + if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') { + text = text + .replace(/<!--([\s\S]*?)-->/g, '$1') + .replace(/<!\[CDATA\[([\s\S]*?)\]\]>/g, '$1'); + } + if (options.chars) { + options.chars(text); + } + return '' + }); + index += html.length - rest.length; + html = rest; + parseEndTag('</' + stackedTag + '>', stackedTag, index - endTagLength, index); } - /** - * Helper to register an event/watch callback. - * - * @param {Vue} vm - * @param {String} action - * @param {String} key - * @param {Function|String|Object} handler - * @param {Object} [options] - */ - - function register(vm, action, key, handler, options) { - var type = typeof handler; - if (type === 'function') { - vm[action](key, handler, options); - } else if (type === 'string') { - var methods = vm.$options.methods; - var method = methods && methods[handler]; - if (method) { - vm[action](key, method, options); - } else { - 'development' !== 'production' && warn('Unknown method: "' + handler + '" when ' + 'registering callback for ' + action + ': "' + key + '".', vm); - } - } else if (handler && type === 'object') { - register(vm, action, key, handler.handler, handler); - } + if (html === last) { + throw new Error('Error parsing template:\n\n' + html) } + } - /** - * Setup recursive attached/detached calls - */ - - Vue.prototype._initDOMHooks = function () { - this.$on('hook:attached', onAttached); - this.$on('hook:detached', onDetached); - }; + // Clean up any remaining tags + parseEndTag(); - /** - * Callback to recursively call attached hook on children - */ + function advance (n) { + index += n; + html = html.substring(n); + } - function onAttached() { - if (!this._isAttached) { - this._isAttached = true; - this.$children.forEach(callAttach); + function parseStartTag () { + var start = html.match(startTagOpen); + if (start) { + var match = { + tagName: start[1], + attrs: [], + start: index + }; + advance(start[0].length); + var end, attr; + while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) { + advance(attr[0].length); + match.attrs.push(attr); } - } - - /** - * Iterator to call attached hook - * - * @param {Vue} child - */ - - function callAttach(child) { - if (!child._isAttached && inDoc(child.$el)) { - child._callHook('attached'); + if (end) { + match.unarySlash = end[1]; + advance(end[0].length); + match.end = index; + return match } } + } - /** - * Callback to recursively call detached hook on children - */ + function handleStartTag (match) { + var tagName = match.tagName; + var unarySlash = match.unarySlash; - function onDetached() { - if (this._isAttached) { - this._isAttached = false; - this.$children.forEach(callDetach); + if (expectHTML) { + if (lastTag === 'p' && isNonPhrasingTag(tagName)) { + parseEndTag('', lastTag); } - } - - /** - * Iterator to call detached hook - * - * @param {Vue} child - */ - - function callDetach(child) { - if (child._isAttached && !inDoc(child.$el)) { - child._callHook('detached'); + if (canBeLeftOpenTag(tagName) && lastTag === tagName) { + parseEndTag('', tagName); } } - /** - * Trigger all handlers for a hook - * - * @param {String} hook - */ + var unary = isUnaryTag$$1(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash; - Vue.prototype._callHook = function (hook) { - this.$emit('pre-hook:' + hook); - var handlers = this.$options[hook]; - if (handlers) { - for (var i = 0, j = handlers.length; i < j; i++) { - handlers[i].call(this); - } + var l = match.attrs.length; + var attrs = new Array(l); + for (var i = 0; i < l; i++) { + var args = match.attrs[i]; + // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778 + if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) { + if (args[3] === '') { delete args[3]; } + if (args[4] === '') { delete args[4]; } + if (args[5] === '') { delete args[5]; } } - this.$emit('hook:' + hook); - }; - } + var value = args[3] || args[4] || args[5] || ''; + attrs[i] = { + name: args[1], + value: decodeAttr( + value, + options.shouldDecodeNewlines + ) + }; + } - function noop$1() {} + if (!unary) { + stack.push({ tag: tagName, attrs: attrs }); + lastTag = tagName; + unarySlash = ''; + } - /** - * A directive links a DOM element with a piece of data, - * which is the result of evaluating an expression. - * It registers a watcher with the expression and calls - * the DOM update function when a change is triggered. - * - * @param {Object} descriptor - * - {String} name - * - {Object} def - * - {String} expression - * - {Array<Object>} [filters] - * - {Object} [modifiers] - * - {Boolean} literal - * - {String} attr - * - {String} arg - * - {String} raw - * - {String} [ref] - * - {Array<Object>} [interp] - * - {Boolean} [hasOneTime] - * @param {Vue} vm - * @param {Node} el - * @param {Vue} [host] - transclusion host component - * @param {Object} [scope] - v-for scope - * @param {Fragment} [frag] - owner fragment - * @constructor - */ - function Directive(descriptor, vm, el, host, scope, frag) { - this.vm = vm; - this.el = el; - // copy descriptor properties - this.descriptor = descriptor; - this.name = descriptor.name; - this.expression = descriptor.expression; - this.arg = descriptor.arg; - this.modifiers = descriptor.modifiers; - this.filters = descriptor.filters; - this.literal = this.modifiers && this.modifiers.literal; - // private - this._locked = false; - this._bound = false; - this._listeners = null; - // link context - this._host = host; - this._scope = scope; - this._frag = frag; - // store directives on node in dev mode - if ('development' !== 'production' && this.el) { - this.el._vue_directives = this.el._vue_directives || []; - this.el._vue_directives.push(this); + if (options.start) { + options.start(tagName, attrs, unary, match.start, match.end); } } - /** - * Initialize the directive, mixin definition properties, - * setup the watcher, call definition bind() and update() - * if present. - */ - - Directive.prototype._bind = function () { - var name = this.name; - var descriptor = this.descriptor; + function parseEndTag (tag, tagName, start, end) { + var pos; + if (start == null) { start = index; } + if (end == null) { end = index; } - // remove attribute - if ((name !== 'cloak' || this.vm._isCompiled) && this.el && this.el.removeAttribute) { - var attr = descriptor.attr || 'v-' + name; - this.el.removeAttribute(attr); - } - - // copy def properties - var def = descriptor.def; - if (typeof def === 'function') { - this.update = def; + // Find the closest opened tag of the same type + if (tagName) { + var needle = tagName.toLowerCase(); + for (pos = stack.length - 1; pos >= 0; pos--) { + if (stack[pos].tag.toLowerCase() === needle) { + break + } + } } else { - extend(this, def); + // If no tag name is provided, clean shop + pos = 0; } - // setup directive params - this._setupParams(); - - // initial bind - if (this.bind) { - this.bind(); - } - this._bound = true; + if (pos >= 0) { + // Close all the open elements, up the stack + for (var i = stack.length - 1; i >= pos; i--) { + if (options.end) { + options.end(stack[i].tag, start, end); + } + } - if (this.literal) { - this.update && this.update(descriptor.raw); - } else if ((this.expression || this.modifiers) && (this.update || this.twoWay) && !this._checkStatement()) { - // wrapped updater for context - var dir = this; - if (this.update) { - this._update = function (val, oldVal) { - if (!dir._locked) { - dir.update(val, oldVal); - } - }; - } else { - this._update = noop$1; + // Remove the open elements from the stack + stack.length = pos; + lastTag = pos && stack[pos - 1].tag; + } else if (tagName.toLowerCase() === 'br') { + if (options.start) { + options.start(tagName, [], true, start, end); } - var preProcess = this._preProcess ? bind(this._preProcess, this) : null; - var postProcess = this._postProcess ? bind(this._postProcess, this) : null; - var watcher = this._watcher = new Watcher(this.vm, this.expression, this._update, // callback - { - filters: this.filters, - twoWay: this.twoWay, - deep: this.deep, - preProcess: preProcess, - postProcess: postProcess, - scope: this._scope - }); - // v-model with inital inline value need to sync back to - // model instead of update to DOM on init. They would - // set the afterBind hook to indicate that. - if (this.afterBind) { - this.afterBind(); - } else if (this.update) { - this.update(watcher.value); + } else if (tagName.toLowerCase() === 'p') { + if (options.start) { + options.start(tagName, [], false, start, end); } - } - }; - - /** - * Setup all param attributes, e.g. track-by, - * transition-mode, etc... - */ - - Directive.prototype._setupParams = function () { - if (!this.params) { - return; - } - var params = this.params; - // swap the params array with a fresh object. - this.params = Object.create(null); - var i = params.length; - var key, val, mappedKey; - while (i--) { - key = hyphenate(params[i]); - mappedKey = camelize(key); - val = getBindAttr(this.el, key); - if (val != null) { - // dynamic - this._setupParamWatcher(mappedKey, val); - } else { - // static - val = getAttr(this.el, key); - if (val != null) { - this.params[mappedKey] = val === '' ? true : val; - } + if (options.end) { + options.end(tagName, start, end); } } - }; + } +} - /** - * Setup a watcher for a dynamic param. - * - * @param {String} key - * @param {String} expression - */ +/* */ - Directive.prototype._setupParamWatcher = function (key, expression) { - var self = this; - var called = false; - var unwatch = (this._scope || this.vm).$watch(expression, function (val, oldVal) { - self.params[key] = val; - // since we are in immediate mode, - // only call the param change callbacks if this is not the first update. - if (called) { - var cb = self.paramWatchers && self.paramWatchers[key]; - if (cb) { - cb.call(self, val, oldVal); - } +function parseFilters (exp) { + var inSingle = false; + var inDouble = false; + var curly = 0; + var square = 0; + var paren = 0; + var lastFilterIndex = 0; + var c, prev, i, expression, filters; + + for (i = 0; i < exp.length; i++) { + prev = c; + c = exp.charCodeAt(i); + if (inSingle) { + // check single quote + if (c === 0x27 && prev !== 0x5C) { inSingle = !inSingle; } + } else if (inDouble) { + // check double quote + if (c === 0x22 && prev !== 0x5C) { inDouble = !inDouble; } + } else if ( + c === 0x7C && // pipe + exp.charCodeAt(i + 1) !== 0x7C && + exp.charCodeAt(i - 1) !== 0x7C && + !curly && !square && !paren + ) { + if (expression === undefined) { + // first filter, end of expression + lastFilterIndex = i + 1; + expression = exp.slice(0, i).trim(); } else { - called = true; + pushFilter(); } - }, { - immediate: true, - user: false - });(this._paramUnwatchFns || (this._paramUnwatchFns = [])).push(unwatch); - }; - - /** - * Check if the directive is a function caller - * and if the expression is a callable one. If both true, - * we wrap up the expression and use it as the event - * handler. - * - * e.g. on-click="a++" - * - * @return {Boolean} - */ - - Directive.prototype._checkStatement = function () { - var expression = this.expression; - if (expression && this.acceptStatement && !isSimplePath(expression)) { - var fn = parseExpression(expression).get; - var scope = this._scope || this.vm; - var handler = function handler(e) { - scope.$event = e; - fn.call(scope, scope); - scope.$event = null; - }; - if (this.filters) { - handler = scope._applyFilters(handler, null, this.filters); + } else { + switch (c) { + case 0x22: inDouble = true; break // " + case 0x27: inSingle = true; break // ' + case 0x28: paren++; break // ( + case 0x29: paren--; break // ) + case 0x5B: square++; break // [ + case 0x5D: square--; break // ] + case 0x7B: curly++; break // { + case 0x7D: curly--; break // } } - this.update(handler); - return true; - } - }; - - /** - * Set the corresponding value with the setter. - * This should only be used in two-way directives - * e.g. v-model. - * - * @param {*} value - * @public - */ - - Directive.prototype.set = function (value) { - /* istanbul ignore else */ - if (this.twoWay) { - this._withLock(function () { - this._watcher.set(value); - }); - } else if ('development' !== 'production') { - warn('Directive.set() can only be used inside twoWay' + 'directives.'); } - }; - - /** - * Execute a function while preventing that function from - * triggering updates on this directive instance. - * - * @param {Function} fn - */ - - Directive.prototype._withLock = function (fn) { - var self = this; - self._locked = true; - fn.call(self); - nextTick(function () { - self._locked = false; - }); - }; - - /** - * Convenience method that attaches a DOM event listener - * to the directive element and autometically tears it down - * during unbind. - * - * @param {String} event - * @param {Function} handler - * @param {Boolean} [useCapture] - */ + } - Directive.prototype.on = function (event, handler, useCapture) { - on(this.el, event, handler, useCapture);(this._listeners || (this._listeners = [])).push([event, handler]); - }; + if (expression === undefined) { + expression = exp.slice(0, i).trim(); + } else if (lastFilterIndex !== 0) { + pushFilter(); + } - /** - * Teardown the watcher and call unbind. - */ + function pushFilter () { + (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim()); + lastFilterIndex = i + 1; + } - Directive.prototype._teardown = function () { - if (this._bound) { - this._bound = false; - if (this.unbind) { - this.unbind(); - } - if (this._watcher) { - this._watcher.teardown(); - } - var listeners = this._listeners; - var i; - if (listeners) { - i = listeners.length; - while (i--) { - off(this.el, listeners[i][0], listeners[i][1]); - } - } - var unwatchFns = this._paramUnwatchFns; - if (unwatchFns) { - i = unwatchFns.length; - while (i--) { - unwatchFns[i](); - } - } - if ('development' !== 'production' && this.el) { - this.el._vue_directives.$remove(this); - } - this.vm = this.el = this._watcher = this._listeners = null; + if (filters) { + for (i = 0; i < filters.length; i++) { + expression = wrapFilter(expression, filters[i]); } - }; + } - function lifecycleMixin (Vue) { - /** - * Update v-ref for component. - * - * @param {Boolean} remove - */ - - Vue.prototype._updateRef = function (remove) { - var ref = this.$options._ref; - if (ref) { - var refs = (this._scope || this._context).$refs; - if (remove) { - if (refs[ref] === this) { - refs[ref] = null; - } - } else { - refs[ref] = this; - } - } - }; + return expression +} - /** - * Transclude, compile and link element. - * - * If a pre-compiled linker is available, that means the - * passed in element will be pre-transcluded and compiled - * as well - all we need to do is to call the linker. - * - * Otherwise we need to call transclude/compile/link here. - * - * @param {Element} el - */ - - Vue.prototype._compile = function (el) { - var options = this.$options; - - // transclude and init element - // transclude can potentially replace original - // so we need to keep reference; this step also injects - // the template and caches the original attributes - // on the container node and replacer node. - var original = el; - el = transclude(el, options); - this._initElement(el); - - // handle v-pre on root node (#2026) - if (el.nodeType === 1 && getAttr(el, 'v-pre') !== null) { - return; - } - - // root is always compiled per-instance, because - // container attrs and props can be different every time. - var contextOptions = this._context && this._context.$options; - var rootLinker = compileRoot(el, options, contextOptions); - - // resolve slot distribution - resolveSlots(this, options._content); - - // compile and link the rest - var contentLinkFn; - var ctor = this.constructor; - // component compilation can be cached - // as long as it's not using inline-template - if (options._linkerCachable) { - contentLinkFn = ctor.linker; - if (!contentLinkFn) { - contentLinkFn = ctor.linker = compile(el, options); - } +function wrapFilter (exp, filter) { + var i = filter.indexOf('('); + if (i < 0) { + // _f: resolveFilter + return ("_f(\"" + filter + "\")(" + exp + ")") + } else { + var name = filter.slice(0, i); + var args = filter.slice(i + 1); + return ("_f(\"" + name + "\")(" + exp + "," + args) + } +} + +/* */ + +var defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g; +var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g; + +var buildRegex = cached(function (delimiters) { + var open = delimiters[0].replace(regexEscapeRE, '\\$&'); + var close = delimiters[1].replace(regexEscapeRE, '\\$&'); + return new RegExp(open + '((?:.|\\n)+?)' + close, 'g') +}); + +function parseText ( + text, + delimiters +) { + var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE; + if (!tagRE.test(text)) { + return + } + var tokens = []; + var lastIndex = tagRE.lastIndex = 0; + var match, index; + while ((match = tagRE.exec(text))) { + index = match.index; + // push text token + if (index > lastIndex) { + tokens.push(JSON.stringify(text.slice(lastIndex, index))); + } + // tag token + var exp = parseFilters(match[1].trim()); + tokens.push(("_s(" + exp + ")")); + lastIndex = index + match[0].length; + } + if (lastIndex < text.length) { + tokens.push(JSON.stringify(text.slice(lastIndex))); + } + return tokens.join('+') +} + +/* */ + +function baseWarn (msg) { + console.error(("[Vue parser]: " + msg)); +} + +function pluckModuleFunction ( + modules, + key +) { + return modules + ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; }) + : [] +} + +function addProp (el, name, value) { + (el.props || (el.props = [])).push({ name: name, value: value }); +} + +function addAttr (el, name, value) { + (el.attrs || (el.attrs = [])).push({ name: name, value: value }); +} + +function addDirective ( + el, + name, + rawName, + value, + arg, + modifiers +) { + (el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers }); +} + +function addHandler ( + el, + name, + value, + modifiers, + important +) { + // check capture modifier + if (modifiers && modifiers.capture) { + delete modifiers.capture; + name = '!' + name; // mark the event as captured + } + var events; + if (modifiers && modifiers.native) { + delete modifiers.native; + events = el.nativeEvents || (el.nativeEvents = {}); + } else { + events = el.events || (el.events = {}); + } + var newHandler = { value: value, modifiers: modifiers }; + var handlers = events[name]; + /* istanbul ignore if */ + if (Array.isArray(handlers)) { + important ? handlers.unshift(newHandler) : handlers.push(newHandler); + } else if (handlers) { + events[name] = important ? [newHandler, handlers] : [handlers, newHandler]; + } else { + events[name] = newHandler; + } +} + +function getBindingAttr ( + el, + name, + getStatic +) { + var dynamicValue = + getAndRemoveAttr(el, ':' + name) || + getAndRemoveAttr(el, 'v-bind:' + name); + if (dynamicValue != null) { + return dynamicValue + } else if (getStatic !== false) { + var staticValue = getAndRemoveAttr(el, name); + if (staticValue != null) { + return JSON.stringify(staticValue) + } + } +} + +function getAndRemoveAttr (el, name) { + var val; + if ((val = el.attrsMap[name]) != null) { + var list = el.attrsList; + for (var i = 0, l = list.length; i < l; i++) { + if (list[i].name === name) { + list.splice(i, 1); + break + } + } + } + return val +} + +/* */ + +var dirRE = /^v-|^@|^:/; +var forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/; +var forIteratorRE = /\(([^,]*),([^,]*)(?:,([^,]*))?\)/; +var bindRE = /^:|^v-bind:/; +var onRE = /^@|^v-on:/; +var argRE = /:(.*)$/; +var modifierRE = /\.[^\.]+/g; +var specialNewlineRE = /\u2028|\u2029/g; + +var decodeHTMLCached = cached(decode); + +// configurable state +var warn$1; +var platformGetTagNamespace; +var platformMustUseProp; +var platformIsPreTag; +var preTransforms; +var transforms; +var postTransforms; +var delimiters; + +/** + * Convert HTML string to AST. + */ +function parse ( + template, + options +) { + warn$1 = options.warn || baseWarn; + platformGetTagNamespace = options.getTagNamespace || no; + platformMustUseProp = options.mustUseProp || no; + platformIsPreTag = options.isPreTag || no; + preTransforms = pluckModuleFunction(options.modules, 'preTransformNode'); + transforms = pluckModuleFunction(options.modules, 'transformNode'); + postTransforms = pluckModuleFunction(options.modules, 'postTransformNode'); + delimiters = options.delimiters; + var stack = []; + var preserveWhitespace = options.preserveWhitespace !== false; + var root; + var currentParent; + var inVPre = false; + var inPre = false; + var warned = false; + parseHTML(template, { + expectHTML: options.expectHTML, + isUnaryTag: options.isUnaryTag, + shouldDecodeNewlines: options.shouldDecodeNewlines, + start: function start (tag, attrs, unary) { + // check namespace. + // inherit parent ns if there is one + var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag); + + // handle IE svg bug + /* istanbul ignore if */ + if (options.isIE && ns === 'svg') { + attrs = guardIESVGBug(attrs); } - // link phase - // make sure to link root with prop scope! - var rootUnlinkFn = rootLinker(this, el, this._scope); - var contentUnlinkFn = contentLinkFn ? contentLinkFn(this, el) : compile(el, options)(this, el); - - // register composite unlink function - // to be called during instance destruction - this._unlinkFn = function () { - rootUnlinkFn(); - // passing destroying: true to avoid searching and - // splicing the directives - contentUnlinkFn(true); + var element = { + type: 1, + tag: tag, + attrsList: attrs, + attrsMap: makeAttrsMap(attrs, options.isIE), + parent: currentParent, + children: [] }; - - // finally replace original - if (options.replace) { - replace(original, el); + if (ns) { + element.ns = ns; } - this._isCompiled = true; - this._callHook('compiled'); - }; - - /** - * Initialize instance element. Called in the public - * $mount() method. - * - * @param {Element} el - */ - - Vue.prototype._initElement = function (el) { - if (isFragment(el)) { - this._isFragment = true; - this.$el = this._fragmentStart = el.firstChild; - this._fragmentEnd = el.lastChild; - // set persisted text anchors to empty - if (this._fragmentStart.nodeType === 3) { - this._fragmentStart.data = this._fragmentEnd.data = ''; - } - this._fragment = el; - } else { - this.$el = el; + if ("client" !== 'server' && isForbiddenTag(element)) { + element.forbidden = true; + "development" !== 'production' && warn$1( + 'Templates should only be responsible for mapping the state to the ' + + 'UI. Avoid placing tags with side-effects in your templates, such as ' + + "<" + tag + ">." + ); } - this.$el.__vue__ = this; - this._callHook('beforeCompile'); - }; - /** - * Create and bind a directive to an element. - * - * @param {Object} descriptor - parsed directive descriptor - * @param {Node} node - target node - * @param {Vue} [host] - transclusion host component - * @param {Object} [scope] - v-for scope - * @param {Fragment} [frag] - owner fragment - */ - - Vue.prototype._bindDir = function (descriptor, node, host, scope, frag) { - this._directives.push(new Directive(descriptor, this, node, host, scope, frag)); - }; - - /** - * Teardown an instance, unobserves the data, unbind all the - * directives, turn off all the event listeners, etc. - * - * @param {Boolean} remove - whether to remove the DOM node. - * @param {Boolean} deferCleanup - if true, defer cleanup to - * be called later - */ - - Vue.prototype._destroy = function (remove, deferCleanup) { - if (this._isBeingDestroyed) { - if (!deferCleanup) { - this._cleanup(); - } - return; + // apply pre-transforms + for (var i = 0; i < preTransforms.length; i++) { + preTransforms[i](element, options); } - var destroyReady; - var pendingRemoval; - - var self = this; - // Cleanup should be called either synchronously or asynchronoysly as - // callback of this.$remove(), or if remove and deferCleanup are false. - // In any case it should be called after all other removing, unbinding and - // turning of is done - var cleanupIfPossible = function cleanupIfPossible() { - if (destroyReady && !pendingRemoval && !deferCleanup) { - self._cleanup(); + if (!inVPre) { + processPre(element); + if (element.pre) { + inVPre = true; } - }; - - // remove DOM element - if (remove && this.$el) { - pendingRemoval = true; - this.$remove(function () { - pendingRemoval = false; - cleanupIfPossible(); - }); - } - - this._callHook('beforeDestroy'); - this._isBeingDestroyed = true; - var i; - // remove self from parent. only necessary - // if parent is not being destroyed as well. - var parent = this.$parent; - if (parent && !parent._isBeingDestroyed) { - parent.$children.$remove(this); - // unregister ref (remove: true) - this._updateRef(true); - } - // destroy all children. - i = this.$children.length; - while (i--) { - this.$children[i].$destroy(); } - // teardown props - if (this._propsUnlinkFn) { - this._propsUnlinkFn(); + if (platformIsPreTag(element.tag)) { + inPre = true; } - // teardown all directives. this also tearsdown all - // directive-owned watchers. - if (this._unlinkFn) { - this._unlinkFn(); - } - i = this._watchers.length; - while (i--) { - this._watchers[i].teardown(); - } - // remove reference to self on $el - if (this.$el) { - this.$el.__vue__ = null; - } - - destroyReady = true; - cleanupIfPossible(); - }; - - /** - * Clean up to ensure garbage collection. - * This is called after the leave transition if there - * is any. - */ - - Vue.prototype._cleanup = function () { - if (this._isDestroyed) { - return; - } - // remove self from owner fragment - // do it in cleanup so that we can call $destroy with - // defer right when a fragment is about to be removed. - if (this._frag) { - this._frag.children.$remove(this); - } - // remove reference from data ob - // frozen object may not have observer. - if (this._data && this._data.__ob__) { - this._data.__ob__.removeVm(this); - } - // Clean up references to private properties and other - // instances. preserve reference to _data so that proxy - // accessors still work. The only potential side effect - // here is that mutating the instance after it's destroyed - // may affect the state of other components that are still - // observing the same object, but that seems to be a - // reasonable responsibility for the user rather than - // always throwing an error on them. - this.$el = this.$parent = this.$root = this.$children = this._watchers = this._context = this._scope = this._directives = null; - // call the last hook... - this._isDestroyed = true; - this._callHook('destroyed'); - // turn off all instance listeners. - this.$off(); - }; - } - - function miscMixin (Vue) { - /** - * Apply a list of filter (descriptors) to a value. - * Using plain for loops here because this will be called in - * the getter of any watcher with filters so it is very - * performance sensitive. - * - * @param {*} value - * @param {*} [oldValue] - * @param {Array} filters - * @param {Boolean} write - * @return {*} - */ - - Vue.prototype._applyFilters = function (value, oldValue, filters, write) { - var filter, fn, args, arg, offset, i, l, j, k; - for (i = 0, l = filters.length; i < l; i++) { - filter = filters[write ? l - i - 1 : i]; - fn = resolveAsset(this.$options, 'filters', filter.name, true); - if (!fn) continue; - fn = write ? fn.write : fn.read || fn; - if (typeof fn !== 'function') continue; - args = write ? [value, oldValue] : [value]; - offset = write ? 2 : 1; - if (filter.args) { - for (j = 0, k = filter.args.length; j < k; j++) { - arg = filter.args[j]; - args[j + offset] = arg.dynamic ? this.$get(arg.value) : arg.value; + if (inVPre) { + processRawAttrs(element); + } else { + processFor(element); + processIf(element); + processOnce(element); + processKey(element); + + // determine whether this is a plain element after + // removing structural attributes + element.plain = !element.key && !attrs.length; + + processRef(element); + processSlot(element); + processComponent(element); + for (var i$1 = 0; i$1 < transforms.length; i$1++) { + transforms[i$1](element, options); + } + processAttrs(element); + } + + function checkRootConstraints (el) { + { + if (el.tag === 'slot' || el.tag === 'template') { + warn$1( + "Cannot use <" + (el.tag) + "> as component root element because it may " + + 'contain multiple nodes:\n' + template + ); + } + if (el.attrsMap.hasOwnProperty('v-for')) { + warn$1( + 'Cannot use v-for on stateful component root element because ' + + 'it renders multiple elements:\n' + template + ); } } - value = fn.apply(this, args); } - return value; - }; - /** - * Resolve a component, depending on whether the component - * is defined normally or using an async factory function. - * Resolves synchronously if already resolved, otherwise - * resolves asynchronously and caches the resolved - * constructor on the factory. - * - * @param {String|Function} value - * @param {Function} cb - */ - - Vue.prototype._resolveComponent = function (value, cb) { - var factory; - if (typeof value === 'function') { - factory = value; - } else { - factory = resolveAsset(this.$options, 'components', value, true); - } - /* istanbul ignore if */ - if (!factory) { - return; - } - // async component factory - if (!factory.options) { - if (factory.resolved) { - // cached - cb(factory.resolved); - } else if (factory.requested) { - // pool callbacks - factory.pendingCallbacks.push(cb); + // tree management + if (!root) { + root = element; + checkRootConstraints(root); + } else if ("development" !== 'production' && !stack.length && !warned) { + // allow 2 root elements with v-if and v-else + if (root.if && element.else) { + checkRootConstraints(element); + root.elseBlock = element; } else { - factory.requested = true; - var cbs = factory.pendingCallbacks = [cb]; - factory.call(this, function resolve(res) { - if (isPlainObject(res)) { - res = Vue.extend(res); - } - // cache resolved - factory.resolved = res; - // invoke callbacks - for (var i = 0, l = cbs.length; i < l; i++) { - cbs[i](res); - } - }, function reject(reason) { - 'development' !== 'production' && warn('Failed to resolve async component' + (typeof value === 'string' ? ': ' + value : '') + '. ' + (reason ? '\nReason: ' + reason : '')); - }); + warned = true; + warn$1( + ("Component template should contain exactly one root element:\n\n" + template) + ); } - } else { - // normal component - cb(factory); } - }; - } - - var filterRE$1 = /[^|]\|[^|]/; - - function dataAPI (Vue) { - /** - * Get the value from an expression on this vm. - * - * @param {String} exp - * @param {Boolean} [asStatement] - * @return {*} - */ - - Vue.prototype.$get = function (exp, asStatement) { - var res = parseExpression(exp); - if (res) { - if (asStatement) { - var self = this; - return function statementHandler() { - self.$arguments = toArray(arguments); - var result = res.get.call(self, self); - self.$arguments = null; - return result; - }; + if (currentParent && !element.forbidden) { + if (element.else) { + processElse(element, currentParent); } else { - try { - return res.get.call(this, this); - } catch (e) {} + currentParent.children.push(element); + element.parent = currentParent; } } - }; - - /** - * Set the value from an expression on this vm. - * The expression must be a valid left-hand - * expression in an assignment. - * - * @param {String} exp - * @param {*} val - */ - - Vue.prototype.$set = function (exp, val) { - var res = parseExpression(exp, true); - if (res && res.set) { - res.set.call(this, this, val); + if (!unary) { + currentParent = element; + stack.push(element); } - }; - - /** - * Delete a property on the VM - * - * @param {String} key - */ - - Vue.prototype.$delete = function (key) { - del(this._data, key); - }; - - /** - * Watch an expression, trigger callback when its - * value changes. - * - * @param {String|Function} expOrFn - * @param {Function} cb - * @param {Object} [options] - * - {Boolean} deep - * - {Boolean} immediate - * @return {Function} - unwatchFn - */ - - Vue.prototype.$watch = function (expOrFn, cb, options) { - var vm = this; - var parsed; - if (typeof expOrFn === 'string') { - parsed = parseDirective(expOrFn); - expOrFn = parsed.expression; - } - var watcher = new Watcher(vm, expOrFn, cb, { - deep: options && options.deep, - sync: options && options.sync, - filters: parsed && parsed.filters, - user: !options || options.user !== false - }); - if (options && options.immediate) { - cb.call(vm, watcher.value); + // apply post-transforms + for (var i$2 = 0; i$2 < postTransforms.length; i$2++) { + postTransforms[i$2](element, options); } - return function unwatchFn() { - watcher.teardown(); - }; - }; + }, - /** - * Evaluate a text directive, including filters. - * - * @param {String} text - * @param {Boolean} [asStatement] - * @return {String} - */ - - Vue.prototype.$eval = function (text, asStatement) { - // check for filters. - if (filterRE$1.test(text)) { - var dir = parseDirective(text); - // the filter regex check might give false positive - // for pipes inside strings, so it's possible that - // we don't get any filters here - var val = this.$get(dir.expression, asStatement); - return dir.filters ? this._applyFilters(val, null, dir.filters) : val; - } else { - // no filter - return this.$get(text, asStatement); + end: function end () { + // remove trailing whitespace + var element = stack[stack.length - 1]; + var lastNode = element.children[element.children.length - 1]; + if (lastNode && lastNode.type === 3 && lastNode.text === ' ') { + element.children.pop(); } - }; - - /** - * Interpolate a piece of template text. - * - * @param {String} text - * @return {String} - */ - - Vue.prototype.$interpolate = function (text) { - var tokens = parseText(text); - var vm = this; - if (tokens) { - if (tokens.length === 1) { - return vm.$eval(tokens[0].value) + ''; - } else { - return tokens.map(function (token) { - return token.tag ? vm.$eval(token.value) : token.value; - }).join(''); - } - } else { - return text; + // pop stack + stack.length -= 1; + currentParent = stack[stack.length - 1]; + // check pre state + if (element.pre) { + inVPre = false; } - }; + if (platformIsPreTag(element.tag)) { + inPre = false; + } + }, - /** - * Log instance data as a plain JS object - * so that it is easier to inspect in console. - * This method assumes console is available. - * - * @param {String} [path] - */ - - Vue.prototype.$log = function (path) { - var data = path ? getPath(this._data, path) : this._data; - if (data) { - data = clean(data); - } - // include computed fields - if (!path) { - var key; - for (key in this.$options.computed) { - data[key] = clean(this[key]); - } - if (this._props) { - for (key in this._props) { - data[key] = clean(this[key]); - } + chars: function chars (text) { + if (!currentParent) { + if ("development" !== 'production' && !warned && text === template) { + warned = true; + warn$1( + 'Component template requires a root element, rather than just text:\n\n' + template + ); + } + return + } + text = inPre || text.trim() + ? decodeHTMLCached(text) + // only preserve whitespace if its not right after a starting tag + : preserveWhitespace && currentParent.children.length ? ' ' : ''; + if (text) { + var expression; + if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) { + currentParent.children.push({ + type: 2, + expression: expression, + text: text + }); + } else { + // #3895 special character + text = text.replace(specialNewlineRE, ''); + currentParent.children.push({ + type: 3, + text: text + }); } } - console.log(data); - }; - - /** - * "clean" a getter/setter converted object into a plain - * object copy. - * - * @param {Object} - obj - * @return {Object} - */ - - function clean(obj) { - return JSON.parse(JSON.stringify(obj)); } - } - - function domAPI (Vue) { - /** - * Convenience on-instance nextTick. The callback is - * auto-bound to the instance, and this avoids component - * modules having to rely on the global Vue. - * - * @param {Function} fn - */ - - Vue.prototype.$nextTick = function (fn) { - nextTick(fn, this); - }; - - /** - * Append instance to target - * - * @param {Node} target - * @param {Function} [cb] - * @param {Boolean} [withTransition] - defaults to true - */ - - Vue.prototype.$appendTo = function (target, cb, withTransition) { - return insert(this, target, cb, withTransition, append, appendWithTransition); - }; - - /** - * Prepend instance to target - * - * @param {Node} target - * @param {Function} [cb] - * @param {Boolean} [withTransition] - defaults to true - */ - - Vue.prototype.$prependTo = function (target, cb, withTransition) { - target = query(target); - if (target.hasChildNodes()) { - this.$before(target.firstChild, cb, withTransition); - } else { - this.$appendTo(target, cb, withTransition); - } - return this; - }; - - /** - * Insert instance before target - * - * @param {Node} target - * @param {Function} [cb] - * @param {Boolean} [withTransition] - defaults to true - */ - - Vue.prototype.$before = function (target, cb, withTransition) { - return insert(this, target, cb, withTransition, beforeWithCb, beforeWithTransition); - }; - - /** - * Insert instance after target - * - * @param {Node} target - * @param {Function} [cb] - * @param {Boolean} [withTransition] - defaults to true - */ - - Vue.prototype.$after = function (target, cb, withTransition) { - target = query(target); - if (target.nextSibling) { - this.$before(target.nextSibling, cb, withTransition); - } else { - this.$appendTo(target.parentNode, cb, withTransition); - } - return this; - }; - - /** - * Remove instance from DOM - * - * @param {Function} [cb] - * @param {Boolean} [withTransition] - defaults to true - */ - - Vue.prototype.$remove = function (cb, withTransition) { - if (!this.$el.parentNode) { - return cb && cb(); - } - var inDocument = this._isAttached && inDoc(this.$el); - // if we are not in document, no need to check - // for transitions - if (!inDocument) withTransition = false; - var self = this; - var realCb = function realCb() { - if (inDocument) self._callHook('detached'); - if (cb) cb(); + }); + return root +} + +function processPre (el) { + if (getAndRemoveAttr(el, 'v-pre') != null) { + el.pre = true; + } +} + +function processRawAttrs (el) { + var l = el.attrsList.length; + if (l) { + var attrs = el.attrs = new Array(l); + for (var i = 0; i < l; i++) { + attrs[i] = { + name: el.attrsList[i].name, + value: JSON.stringify(el.attrsList[i].value) }; - if (this._isFragment) { - removeNodeRange(this._fragmentStart, this._fragmentEnd, this, this._fragment, realCb); - } else { - var op = withTransition === false ? removeWithCb : removeWithTransition; - op(this.$el, this, realCb); - } - return this; - }; - - /** - * Shared DOM insertion function. - * - * @param {Vue} vm - * @param {Element} target - * @param {Function} [cb] - * @param {Boolean} [withTransition] - * @param {Function} op1 - op for non-transition insert - * @param {Function} op2 - op for transition insert - * @return vm - */ - - function insert(vm, target, cb, withTransition, op1, op2) { - target = query(target); - var targetIsDetached = !inDoc(target); - var op = withTransition === false || targetIsDetached ? op1 : op2; - var shouldCallHook = !targetIsDetached && !vm._isAttached && !inDoc(vm.$el); - if (vm._isFragment) { - mapNodeRange(vm._fragmentStart, vm._fragmentEnd, function (node) { - op(node, target, vm); - }); - cb && cb(); - } else { - op(vm.$el, target, vm, cb); - } - if (shouldCallHook) { - vm._callHook('attached'); - } - return vm; - } - - /** - * Check for selectors - * - * @param {String|Element} el - */ - - function query(el) { - return typeof el === 'string' ? document.querySelector(el) : el; } - - /** - * Append operation that takes a callback. - * - * @param {Node} el - * @param {Node} target - * @param {Vue} vm - unused - * @param {Function} [cb] - */ - - function append(el, target, vm, cb) { - target.appendChild(el); - if (cb) cb(); + } else if (!el.pre) { + // non root node in pre blocks with no attributes + el.plain = true; + } +} + +function processKey (el) { + var exp = getBindingAttr(el, 'key'); + if (exp) { + if ("development" !== 'production' && el.tag === 'template') { + warn$1("<template> cannot be keyed. Place the key on real elements instead."); + } + el.key = exp; + } +} + +function processRef (el) { + var ref = getBindingAttr(el, 'ref'); + if (ref) { + el.ref = ref; + el.refInFor = checkInFor(el); + } +} + +function processFor (el) { + var exp; + if ((exp = getAndRemoveAttr(el, 'v-for'))) { + var inMatch = exp.match(forAliasRE); + if (!inMatch) { + "development" !== 'production' && warn$1( + ("Invalid v-for expression: " + exp) + ); + return + } + el.for = inMatch[2].trim(); + var alias = inMatch[1].trim(); + var iteratorMatch = alias.match(forIteratorRE); + if (iteratorMatch) { + el.alias = iteratorMatch[1].trim(); + el.iterator1 = iteratorMatch[2].trim(); + if (iteratorMatch[3]) { + el.iterator2 = iteratorMatch[3].trim(); + } + } else { + el.alias = alias; } + } +} - /** - * InsertBefore operation that takes a callback. - * - * @param {Node} el - * @param {Node} target - * @param {Vue} vm - unused - * @param {Function} [cb] - */ +function processIf (el) { + var exp = getAndRemoveAttr(el, 'v-if'); + if (exp) { + el.if = exp; + } + if (getAndRemoveAttr(el, 'v-else') != null) { + el.else = true; + } +} - function beforeWithCb(el, target, vm, cb) { - before(el, target); - if (cb) cb(); - } +function processElse (el, parent) { + var prev = findPrevElement(parent.children); + if (prev && prev.if) { + prev.elseBlock = el; + } else { + warn$1( + ("v-else used on element <" + (el.tag) + "> without corresponding v-if.") + ); + } +} - /** - * Remove operation that takes a callback. - * - * @param {Node} el - * @param {Vue} vm - unused - * @param {Function} [cb] - */ +function processOnce (el) { + var once = getAndRemoveAttr(el, 'v-once'); + if (once != null) { + el.once = true; + } +} - function removeWithCb(el, vm, cb) { - remove(el); - if (cb) cb(); +function processSlot (el) { + if (el.tag === 'slot') { + el.slotName = getBindingAttr(el, 'name'); + } else { + var slotTarget = getBindingAttr(el, 'slot'); + if (slotTarget) { + el.slotTarget = slotTarget; } } +} - function eventsAPI (Vue) { - /** - * Listen on the given `event` with `fn`. - * - * @param {String} event - * @param {Function} fn - */ - - Vue.prototype.$on = function (event, fn) { - (this._events[event] || (this._events[event] = [])).push(fn); - modifyListenerCount(this, event, 1); - return this; - }; - - /** - * Adds an `event` listener that will be invoked a single - * time then automatically removed. - * - * @param {String} event - * @param {Function} fn - */ - - Vue.prototype.$once = function (event, fn) { - var self = this; - function on() { - self.$off(event, on); - fn.apply(this, arguments); - } - on.fn = fn; - this.$on(event, on); - return this; - }; +function processComponent (el) { + var binding; + if ((binding = getBindingAttr(el, 'is'))) { + el.component = binding; + } + if (getAndRemoveAttr(el, 'inline-template') != null) { + el.inlineTemplate = true; + } +} - /** - * Remove the given callback for `event` or all - * registered callbacks. - * - * @param {String} event - * @param {Function} fn - */ - - Vue.prototype.$off = function (event, fn) { - var cbs; - // all - if (!arguments.length) { - if (this.$parent) { - for (event in this._events) { - cbs = this._events[event]; - if (cbs) { - modifyListenerCount(this, event, -cbs.length); - } - } - } - this._events = {}; - return this; - } - // specific event - cbs = this._events[event]; - if (!cbs) { - return this; - } - if (arguments.length === 1) { - modifyListenerCount(this, event, -cbs.length); - this._events[event] = null; - return this; - } - // specific handler - var cb; - var i = cbs.length; - while (i--) { - cb = cbs[i]; - if (cb === fn || cb.fn === fn) { - modifyListenerCount(this, event, -1); - cbs.splice(i, 1); - break; +function processAttrs (el) { + var list = el.attrsList; + var i, l, name, rawName, value, arg, modifiers, isProp; + for (i = 0, l = list.length; i < l; i++) { + name = rawName = list[i].name; + value = list[i].value; + if (dirRE.test(name)) { + // mark element as dynamic + el.hasBindings = true; + // modifiers + modifiers = parseModifiers(name); + if (modifiers) { + name = name.replace(modifierRE, ''); + } + if (bindRE.test(name)) { // v-bind + name = name.replace(bindRE, ''); + if (modifiers && modifiers.prop) { + isProp = true; + name = camelize(name); + if (name === 'innerHtml') { name = 'innerHTML'; } + } + if (isProp || platformMustUseProp(name)) { + addProp(el, name, value); + } else { + addAttr(el, name, value); } - } - return this; - }; - - /** - * Trigger an event on self. - * - * @param {String|Object} event - * @return {Boolean} shouldPropagate - */ - - Vue.prototype.$emit = function (event) { - var isSource = typeof event === 'string'; - event = isSource ? event : event.name; - var cbs = this._events[event]; - var shouldPropagate = isSource || !cbs; - if (cbs) { - cbs = cbs.length > 1 ? toArray(cbs) : cbs; - // this is a somewhat hacky solution to the question raised - // in #2102: for an inline component listener like <comp @test="doThis">, - // the propagation handling is somewhat broken. Therefore we - // need to treat these inline callbacks differently. - var hasParentCbs = isSource && cbs.some(function (cb) { - return cb._fromParent; - }); - if (hasParentCbs) { - shouldPropagate = false; + } else if (onRE.test(name)) { // v-on + name = name.replace(onRE, ''); + addHandler(el, name, value, modifiers); + } else { // normal directives + name = name.replace(dirRE, ''); + // parse arg + var argMatch = name.match(argRE); + if (argMatch && (arg = argMatch[1])) { + name = name.slice(0, -(arg.length + 1)); } - var args = toArray(arguments, 1); - for (var i = 0, l = cbs.length; i < l; i++) { - var cb = cbs[i]; - var res = cb.apply(this, args); - if (res === true && (!hasParentCbs || cb._fromParent)) { - shouldPropagate = true; - } + addDirective(el, name, rawName, value, arg, modifiers); + if ("development" !== 'production' && name === 'model') { + checkForAliasModel(el, value); } } - return shouldPropagate; - }; - - /** - * Recursively broadcast an event to all children instances. - * - * @param {String|Object} event - * @param {...*} additional arguments - */ - - Vue.prototype.$broadcast = function (event) { - var isSource = typeof event === 'string'; - event = isSource ? event : event.name; - // if no child has registered for this event, - // then there's no need to broadcast. - if (!this._eventsCount[event]) return; - var children = this.$children; - var args = toArray(arguments); - if (isSource) { - // use object event to indicate non-source emit - // on children - args[0] = { name: event, source: this }; - } - for (var i = 0, l = children.length; i < l; i++) { - var child = children[i]; - var shouldPropagate = child.$emit.apply(child, args); - if (shouldPropagate) { - child.$broadcast.apply(child, args); + } else { + // literal attribute + { + var expression = parseText(value, delimiters); + if (expression) { + warn$1( + name + "=\"" + value + "\": " + + 'Interpolation inside attributes has been deprecated. ' + + 'Use v-bind or the colon shorthand instead.' + ); } } - return this; - }; - - /** - * Recursively propagate an event up the parent chain. - * - * @param {String} event - * @param {...*} additional arguments - */ - - Vue.prototype.$dispatch = function (event) { - var shouldPropagate = this.$emit.apply(this, arguments); - if (!shouldPropagate) return; - var parent = this.$parent; - var args = toArray(arguments); - // use object event to indicate non-source emit - // on parents - args[0] = { name: event, source: this }; - while (parent) { - shouldPropagate = parent.$emit.apply(parent, args); - parent = shouldPropagate ? parent.$parent : null; - } - return this; - }; - - /** - * Modify the listener counts on all parents. - * This bookkeeping allows $broadcast to return early when - * no child has listened to a certain event. - * - * @param {Vue} vm - * @param {String} event - * @param {Number} count - */ - - var hookRE = /^hook:/; - function modifyListenerCount(vm, event, count) { - var parent = vm.$parent; - // hooks do not get broadcasted so no need - // to do bookkeeping for them - if (!parent || !count || hookRE.test(event)) return; - while (parent) { - parent._eventsCount[event] = (parent._eventsCount[event] || 0) + count; - parent = parent.$parent; - } - } - } - - function lifecycleAPI (Vue) { - /** - * Set instance target element and kick off the compilation - * process. The passed in `el` can be a selector string, an - * existing Element, or a DocumentFragment (for block - * instances). - * - * @param {Element|DocumentFragment|string} el - * @public - */ - - Vue.prototype.$mount = function (el) { - if (this._isCompiled) { - 'development' !== 'production' && warn('$mount() should be called only once.', this); - return; - } - el = query(el); - if (!el) { - el = document.createElement('div'); - } - this._compile(el); - this._initDOMHooks(); - if (inDoc(this.$el)) { - this._callHook('attached'); - ready.call(this); - } else { - this.$once('hook:attached', ready); - } - return this; - }; - - /** - * Mark an instance as ready. - */ - - function ready() { - this._isAttached = true; - this._isReady = true; - this._callHook('ready'); + addAttr(el, name, JSON.stringify(value)); } - - /** - * Teardown the instance, simply delegate to the internal - * _destroy. - * - * @param {Boolean} remove - * @param {Boolean} deferCleanup - */ - - Vue.prototype.$destroy = function (remove, deferCleanup) { - this._destroy(remove, deferCleanup); - }; - - /** - * Partially compile a piece of DOM and return a - * decompile function. - * - * @param {Element|DocumentFragment} el - * @param {Vue} [host] - * @param {Object} [scope] - * @param {Fragment} [frag] - * @return {Function} - */ - - Vue.prototype.$compile = function (el, host, scope, frag) { - return compile(el, this.$options, true)(this, el, host, scope, frag); - }; } +} - /** - * The exposed Vue constructor. - * - * API conventions: - * - public API methods/properties are prefixed with `$` - * - internal methods/properties are prefixed with `_` - * - non-prefixed properties are assumed to be proxied user - * data. - * - * @constructor - * @param {Object} [options] - * @public - */ - - function Vue(options) { - this._init(options); +function checkInFor (el) { + var parent = el; + while (parent) { + if (parent.for !== undefined) { + return true + } + parent = parent.parent; } + return false +} - // install internals - initMixin(Vue); - stateMixin(Vue); - eventsMixin(Vue); - lifecycleMixin(Vue); - miscMixin(Vue); - - // install instance APIs - dataAPI(Vue); - domAPI(Vue); - eventsAPI(Vue); - lifecycleAPI(Vue); - - var slot = { - - priority: SLOT, - params: ['name'], - - bind: function bind() { - // this was resolved during component transclusion - var name = this.params.name || 'default'; - var content = this.vm._slotContents && this.vm._slotContents[name]; - if (!content || !content.hasChildNodes()) { - this.fallback(); - } else { - this.compile(content.cloneNode(true), this.vm._context, this.vm); - } - }, - - compile: function compile(content, context, host) { - if (content && context) { - if (this.el.hasChildNodes() && content.childNodes.length === 1 && content.childNodes[0].nodeType === 1 && content.childNodes[0].hasAttribute('v-if')) { - // if the inserted slot has v-if - // inject fallback content as the v-else - var elseBlock = document.createElement('template'); - elseBlock.setAttribute('v-else', ''); - elseBlock.innerHTML = this.el.innerHTML; - // the else block should be compiled in child scope - elseBlock._context = this.vm; - content.appendChild(elseBlock); - } - var scope = host ? host._scope : this._scope; - this.unlink = context.$compile(content, host, scope, this._frag); - } - if (content) { - replace(this.el, content); +function parseModifiers (name) { + var match = name.match(modifierRE); + if (match) { + var ret = {}; + match.forEach(function (m) { ret[m.slice(1)] = true; }); + return ret + } +} + +function makeAttrsMap (attrs, isIE) { + var map = {}; + for (var i = 0, l = attrs.length; i < l; i++) { + if ("development" !== 'production' && map[attrs[i].name] && !isIE) { + warn$1('duplicate attribute: ' + attrs[i].name); + } + map[attrs[i].name] = attrs[i].value; + } + return map +} + +function findPrevElement (children) { + var i = children.length; + while (i--) { + if (children[i].tag) { return children[i] } + } +} + +function isForbiddenTag (el) { + return ( + el.tag === 'style' || + (el.tag === 'script' && ( + !el.attrsMap.type || + el.attrsMap.type === 'text/javascript' + )) + ) +} + +var ieNSBug = /^xmlns:NS\d+/; +var ieNSPrefix = /^NS\d+:/; + +/* istanbul ignore next */ +function guardIESVGBug (attrs) { + var res = []; + for (var i = 0; i < attrs.length; i++) { + var attr = attrs[i]; + if (!ieNSBug.test(attr.name)) { + attr.name = attr.name.replace(ieNSPrefix, ''); + res.push(attr); + } + } + return res +} + +function checkForAliasModel (el, value) { + var _el = el; + while (_el) { + if (_el.for && _el.alias === value) { + warn$1( + "<" + (el.tag) + " v-model=\"" + value + "\">: " + + "You are binding v-model directly to a v-for iteration alias. " + + "This will not be able to modify the v-for source array because " + + "writing to the alias is like modifying a function local variable. " + + "Consider using an array of objects and use v-model on an object property instead." + ); + } + _el = _el.parent; + } +} + +/* */ + +var isStaticKey; +var isPlatformReservedTag; + +var genStaticKeysCached = cached(genStaticKeys$1); + +/** + * Goal of the optimizier: walk the generated template AST tree + * and detect sub-trees that are purely static, i.e. parts of + * the DOM that never needs to change. + * + * Once we detect these sub-trees, we can: + * + * 1. Hoist them into constants, so that we no longer need to + * create fresh nodes for them on each re-render; + * 2. Completely skip them in the patching process. + */ +function optimize (root, options) { + if (!root) { return } + isStaticKey = genStaticKeysCached(options.staticKeys || ''); + isPlatformReservedTag = options.isReservedTag || (function () { return false; }); + // first pass: mark all non-static nodes. + markStatic(root); + // second pass: mark static roots. + markStaticRoots(root, false); +} + +function genStaticKeys$1 (keys) { + return makeMap( + 'type,tag,attrsList,attrsMap,plain,parent,children,attrs' + + (keys ? ',' + keys : '') + ) +} + +function markStatic (node) { + node.static = isStatic(node); + if (node.type === 1) { + for (var i = 0, l = node.children.length; i < l; i++) { + var child = node.children[i]; + markStatic(child); + if (!child.static) { + node.static = false; + } + } + } +} + +function markStaticRoots (node, isInFor) { + if (node.type === 1) { + if (node.once || node.static) { + node.staticRoot = true; + node.staticInFor = isInFor; + return + } + if (node.children) { + for (var i = 0, l = node.children.length; i < l; i++) { + markStaticRoots(node.children[i], isInFor || !!node.for); + } + } + } +} + +function isStatic (node) { + if (node.type === 2) { // expression + return false + } + if (node.type === 3) { // text + return true + } + return !!(node.pre || ( + !node.hasBindings && // no dynamic bindings + !node.if && !node.for && // not v-if or v-for or v-else + !isBuiltInTag(node.tag) && // not a built-in + isPlatformReservedTag(node.tag) && // not a component + !isDirectChildOfTemplateFor(node) && + Object.keys(node).every(isStaticKey) + )) +} + +function isDirectChildOfTemplateFor (node) { + while (node.parent) { + node = node.parent; + if (node.tag !== 'template') { + return false + } + if (node.for) { + return true + } + } + return false +} + +/* */ + +var simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?'\]|\[".*?"\]|\[\d+\]|\[[A-Za-z_$][\w$]*\])*\s*$/; + +// keyCode aliases +var keyCodes = { + esc: 27, + tab: 9, + enter: 13, + space: 32, + up: 38, + left: 37, + right: 39, + down: 40, + 'delete': [8, 46] +}; + +var modifierCode = { + stop: '$event.stopPropagation();', + prevent: '$event.preventDefault();', + self: 'if($event.target !== $event.currentTarget)return;' +}; + +function genHandlers (events, native) { + var res = native ? 'nativeOn:{' : 'on:{'; + for (var name in events) { + res += "\"" + name + "\":" + (genHandler(events[name])) + ","; + } + return res.slice(0, -1) + '}' +} + +function genHandler ( + handler +) { + if (!handler) { + return 'function(){}' + } else if (Array.isArray(handler)) { + return ("[" + (handler.map(genHandler).join(',')) + "]") + } else if (!handler.modifiers) { + return simplePathRE.test(handler.value) + ? handler.value + : ("function($event){" + (handler.value) + "}") + } else { + var code = ''; + var keys = []; + for (var key in handler.modifiers) { + if (modifierCode[key]) { + code += modifierCode[key]; } else { - remove(this.el); - } - }, - - fallback: function fallback() { - this.compile(extractContent(this.el, true), this.vm); - }, - - unbind: function unbind() { - if (this.unlink) { - this.unlink(); + keys.push(key); } } - }; - - var partial = { - - priority: PARTIAL, - - params: ['name'], - - // watch changes to name for dynamic partials - paramWatchers: { - name: function name(value) { - vIf.remove.call(this); - if (value) { - this.insert(value); - } - } - }, + if (keys.length) { + code = genKeyFilter(keys) + code; + } + var handlerCode = simplePathRE.test(handler.value) + ? handler.value + '($event)' + : handler.value; + return 'function($event){' + code + handlerCode + '}' + } +} - bind: function bind() { - this.anchor = createAnchor('v-partial'); - replace(this.el, this.anchor); - this.insert(this.params.name); - }, +function genKeyFilter (keys) { + var code = keys.length === 1 + ? normalizeKeyCode(keys[0]) + : Array.prototype.concat.apply([], keys.map(normalizeKeyCode)); + if (Array.isArray(code)) { + return ("if(" + (code.map(function (c) { return ("$event.keyCode!==" + c); }).join('&&')) + ")return;") + } else { + return ("if($event.keyCode!==" + code + ")return;") + } +} - insert: function insert(id) { - var partial = resolveAsset(this.vm.$options, 'partials', id, true); - if (partial) { - this.factory = new FragmentFactory(this.vm, partial); - vIf.insert.call(this); - } - }, +function normalizeKeyCode (key) { + return ( + parseInt(key, 10) || // number keyCode + keyCodes[key] || // built-in alias + ("_k(" + (JSON.stringify(key)) + ")") // custom alias + ) +} - unbind: function unbind() { - if (this.frag) { - this.frag.destroy(); - } - } - }; +/* */ - var elementDirectives = { - slot: slot, - partial: partial +function bind$2 (el, dir) { + el.wrapData = function (code) { + return ("_b(" + code + "," + (dir.value) + (dir.modifiers && dir.modifiers.prop ? ',true' : '') + ")") }; +} + +var baseDirectives = { + bind: bind$2, + cloak: noop +}; + +/* */ + +// configurable state +var warn$2; +var transforms$1; +var dataGenFns; +var platformDirectives$1; +var staticRenderFns; +var currentOptions; + +function generate ( + ast, + options +) { + // save previous staticRenderFns so generate calls can be nested + var prevStaticRenderFns = staticRenderFns; + var currentStaticRenderFns = staticRenderFns = []; + currentOptions = options; + warn$2 = options.warn || baseWarn; + transforms$1 = pluckModuleFunction(options.modules, 'transformCode'); + dataGenFns = pluckModuleFunction(options.modules, 'genData'); + platformDirectives$1 = options.directives || {}; + var code = ast ? genElement(ast) : '_h("div")'; + staticRenderFns = prevStaticRenderFns; + return { + render: ("with(this){return " + code + "}"), + staticRenderFns: currentStaticRenderFns + } +} + +function genElement (el) { + if (el.staticRoot && !el.staticProcessed) { + // hoist static sub-trees out + el.staticProcessed = true; + staticRenderFns.push(("with(this){return " + (genElement(el)) + "}")); + return ("_m(" + (staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")") + } else if (el.for && !el.forProcessed) { + return genFor(el) + } else if (el.if && !el.ifProcessed) { + return genIf(el) + } else if (el.tag === 'template' && !el.slotTarget) { + return genChildren(el) || 'void 0' + } else if (el.tag === 'slot') { + return genSlot(el) + } else { + // component or element + var code; + if (el.component) { + code = genComponent(el); + } else { + var data = genData(el); + var children = el.inlineTemplate ? null : genChildren(el); + code = "_h('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")"; + } + // module transforms + for (var i = 0; i < transforms$1.length; i++) { + code = transforms$1[i](el, code); + } + return code + } +} + +function genIf (el) { + var exp = el.if; + el.ifProcessed = true; // avoid recursion + return ("(" + exp + ")?" + (genElement(el)) + ":" + (genElse(el))) +} + +function genElse (el) { + return el.elseBlock + ? genElement(el.elseBlock) + : '_e()' +} + +function genFor (el) { + var exp = el.for; + var alias = el.alias; + var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : ''; + var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : ''; + el.forProcessed = true; // avoid recursion + return "_l((" + exp + ")," + + "function(" + alias + iterator1 + iterator2 + "){" + + "return " + (genElement(el)) + + '})' +} + +function genData (el) { + if (el.plain) { + return + } + + var data = '{'; + + // directives first. + // directives may mutate the el's other properties before they are generated. + var dirs = genDirectives(el); + if (dirs) { data += dirs + ','; } + + // key + if (el.key) { + data += "key:" + (el.key) + ","; + } + // ref + if (el.ref) { + data += "ref:" + (el.ref) + ","; + } + if (el.refInFor) { + data += "refInFor:true,"; + } + // record original tag name for components using "is" attribute + if (el.component) { + data += "tag:\"" + (el.tag) + "\","; + } + // slot target + if (el.slotTarget) { + data += "slot:" + (el.slotTarget) + ","; + } + // module data generation functions + for (var i = 0; i < dataGenFns.length; i++) { + data += dataGenFns[i](el); + } + // attributes + if (el.attrs) { + data += "attrs:{" + (genProps(el.attrs)) + "},"; + } + // DOM props + if (el.props) { + data += "domProps:{" + (genProps(el.props)) + "},"; + } + // event handlers + if (el.events) { + data += (genHandlers(el.events)) + ","; + } + if (el.nativeEvents) { + data += (genHandlers(el.nativeEvents, true)) + ","; + } + // inline-template + if (el.inlineTemplate) { + var ast = el.children[0]; + if ("development" !== 'production' && ( + el.children.length > 1 || ast.type !== 1 + )) { + warn$2('Inline-template components must have exactly one child element.'); + } + if (ast.type === 1) { + var inlineRenderFns = generate(ast, currentOptions); + data += "inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}"; + } + } + data = data.replace(/,$/, '') + '}'; + // v-bind data wrap + if (el.wrapData) { + data = el.wrapData(data); + } + return data +} + +function genDirectives (el) { + var dirs = el.directives; + if (!dirs) { return } + var res = 'directives:['; + var hasRuntime = false; + var i, l, dir, needRuntime; + for (i = 0, l = dirs.length; i < l; i++) { + dir = dirs[i]; + needRuntime = true; + var gen = platformDirectives$1[dir.name] || baseDirectives[dir.name]; + if (gen) { + // compile-time directive that manipulates AST. + // returns true if it also needs a runtime counterpart. + needRuntime = !!gen(el, dir, warn$2); + } + if (needRuntime) { + hasRuntime = true; + res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},"; + } + } + if (hasRuntime) { + return res.slice(0, -1) + ']' + } +} - var convertArray = vFor._postProcess; - - /** - * Limit filter for arrays - * - * @param {Number} n - * @param {Number} offset (Decimal expected) - */ - - function limitBy(arr, n, offset) { - offset = offset ? parseInt(offset, 10) : 0; - n = toNumber(n); - return typeof n === 'number' ? arr.slice(offset, offset + n) : arr; +function genChildren (el) { + if (el.children.length) { + return '[' + el.children.map(genNode).join(',') + ']' } +} - /** - * Filter filter for arrays - * - * @param {String} search - * @param {String} [delimiter] - * @param {String} ...dataKeys - */ - - function filterBy(arr, search, delimiter) { - arr = convertArray(arr); - if (search == null) { - return arr; - } - if (typeof search === 'function') { - return arr.filter(search); - } - // cast to lowercase string - search = ('' + search).toLowerCase(); - // allow optional `in` delimiter - // because why not - var n = delimiter === 'in' ? 3 : 2; - // extract and flatten keys - var keys = Array.prototype.concat.apply([], toArray(arguments, n)); - var res = []; - var item, key, val, j; - for (var i = 0, l = arr.length; i < l; i++) { - item = arr[i]; - val = item && item.$value || item; - j = keys.length; - if (j) { - while (j--) { - key = keys[j]; - if (key === '$key' && contains(item.$key, search) || contains(getPath(val, key), search)) { - res.push(item); - break; +function genNode (node) { + if (node.type === 1) { + return genElement(node) + } else { + return genText(node) + } +} + +function genText (text) { + return text.type === 2 + ? text.expression // no need for () because already wrapped in _s() + : JSON.stringify(text.text) +} + +function genSlot (el) { + var slotName = el.slotName || '"default"'; + var children = genChildren(el); + return children + ? ("_t(" + slotName + "," + children + ")") + : ("_t(" + slotName + ")") +} + +function genComponent (el) { + var children = el.inlineTemplate ? null : genChildren(el); + return ("_h(" + (el.component) + "," + (genData(el)) + (children ? ("," + children) : '') + ")") +} + +function genProps (props) { + var res = ''; + for (var i = 0; i < props.length; i++) { + var prop = props[i]; + res += "\"" + (prop.name) + "\":" + (prop.value) + ","; + } + return res.slice(0, -1) +} + +/* */ + +/** + * Compile a template. + */ +function compile$1 ( + template, + options +) { + var ast = parse(template.trim(), options); + optimize(ast, options); + var code = generate(ast, options); + return { + ast: ast, + render: code.render, + staticRenderFns: code.staticRenderFns + } +} + +/* */ + +// operators like typeof, instanceof and in are allowed +var prohibitedKeywordRE = new RegExp('\\b' + ( + 'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' + + 'super,throw,while,yield,delete,export,import,return,switch,default,' + + 'extends,finally,continue,debugger,function,arguments' +).split(',').join('\\b|\\b') + '\\b'); +// check valid identifier for v-for +var identRE = /[A-Za-z_$][\w$]*/; +// strip strings in expressions +var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g; + +// detect problematic expressions in a template +function detectErrors (ast) { + var errors = []; + if (ast) { + checkNode(ast, errors); + } + return errors +} + +function checkNode (node, errors) { + if (node.type === 1) { + for (var name in node.attrsMap) { + if (dirRE.test(name)) { + var value = node.attrsMap[name]; + if (value) { + if (name === 'v-for') { + checkFor(node, ("v-for=\"" + value + "\""), errors); + } else { + checkExpression(value, (name + "=\"" + value + "\""), errors); } } - } else if (contains(item, search)) { - res.push(item); } } - return res; + if (node.children) { + for (var i = 0; i < node.children.length; i++) { + checkNode(node.children[i], errors); + } + } + } else if (node.type === 2) { + checkExpression(node.expression, node.text, errors); } +} - /** - * Filter filter for arrays - * - * @param {String|Array<String>|Function} ...sortKeys - * @param {Number} [order] - */ - - function orderBy(arr) { - var comparator = null; - var sortKeys = undefined; - arr = convertArray(arr); +function checkFor (node, text, errors) { + checkExpression(node.for || '', text, errors); + checkIdentifier(node.alias, 'v-for alias', text, errors); + checkIdentifier(node.iterator1, 'v-for iterator', text, errors); + checkIdentifier(node.iterator2, 'v-for iterator', text, errors); +} - // determine order (last argument) - var args = toArray(arguments, 1); - var order = args[args.length - 1]; - if (typeof order === 'number') { - order = order < 0 ? -1 : 1; - args = args.length > 1 ? args.slice(0, -1) : args; - } else { - order = 1; - } +function checkIdentifier (ident, type, text, errors) { + if (typeof ident === 'string' && !identRE.test(ident)) { + errors.push(("- invalid " + type + " \"" + ident + "\" in expression: " + text)); + } +} - // determine sortKeys & comparator - var firstArg = args[0]; - if (!firstArg) { - return arr; - } else if (typeof firstArg === 'function') { - // custom comparator - comparator = function (a, b) { - return firstArg(a, b) * order; - }; +function checkExpression (exp, text, errors) { + try { + new Function(("return " + exp)); + } catch (e) { + var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE); + if (keywordMatch) { + errors.push( + "- avoid using JavaScript keyword as property name: " + + "\"" + (keywordMatch[0]) + "\" in expression " + text + ); } else { - // string keys. flatten first - sortKeys = Array.prototype.concat.apply([], args); - comparator = function (a, b, i) { - i = i || 0; - return i >= sortKeys.length - 1 ? baseCompare(a, b, i) : baseCompare(a, b, i) || comparator(a, b, i + 1); - }; - } - - function baseCompare(a, b, sortKeyIndex) { - var sortKey = sortKeys[sortKeyIndex]; - if (sortKey) { - if (sortKey !== '$key') { - if (isObject(a) && '$value' in a) a = a.$value; - if (isObject(b) && '$value' in b) b = b.$value; - } - a = isObject(a) ? getPath(a, sortKey) : a; - b = isObject(b) ? getPath(b, sortKey) : b; + errors.push(("- invalid expression: " + text)); + } + } +} + +/* */ + +function transformNode (el, options) { + var warn = options.warn || baseWarn; + var staticClass = getAndRemoveAttr(el, 'class'); + if ("development" !== 'production' && staticClass) { + var expression = parseText(staticClass, options.delimiters); + if (expression) { + warn( + "class=\"" + staticClass + "\": " + + 'Interpolation inside attributes has been deprecated. ' + + 'Use v-bind or the colon shorthand instead.' + ); + } + } + if (staticClass) { + el.staticClass = JSON.stringify(staticClass); + } + var classBinding = getBindingAttr(el, 'class', false /* getStatic */); + if (classBinding) { + el.classBinding = classBinding; + } +} + +function genData$1 (el) { + var data = ''; + if (el.staticClass) { + data += "staticClass:" + (el.staticClass) + ","; + } + if (el.classBinding) { + data += "class:" + (el.classBinding) + ","; + } + return data +} + +var klass$1 = { + staticKeys: ['staticClass'], + transformNode: transformNode, + genData: genData$1 +}; + +/* */ + +function transformNode$1 (el) { + var styleBinding = getBindingAttr(el, 'style', false /* getStatic */); + if (styleBinding) { + el.styleBinding = styleBinding; + } +} + +function genData$2 (el) { + return el.styleBinding + ? ("style:(" + (el.styleBinding) + "),") + : '' +} + +var style$1 = { + transformNode: transformNode$1, + genData: genData$2 +}; + +var modules$1 = [ + klass$1, + style$1 +]; + +/* */ + +var warn$3; + +function model$1 ( + el, + dir, + _warn +) { + warn$3 = _warn; + var value = dir.value; + var modifiers = dir.modifiers; + var tag = el.tag; + var type = el.attrsMap.type; + { + var dynamicType = el.attrsMap['v-bind:type'] || el.attrsMap[':type']; + if (tag === 'input' && dynamicType) { + warn$3( + "<input :type=\"" + dynamicType + "\" v-model=\"" + value + "\">:\n" + + "v-model does not support dynamic input types. Use v-if branches instead." + ); + } + } + if (tag === 'select') { + genSelect(el, value); + } else if (tag === 'input' && type === 'checkbox') { + genCheckboxModel(el, value); + } else if (tag === 'input' && type === 'radio') { + genRadioModel(el, value); + } else { + genDefaultModel(el, value, modifiers); + } + // ensure runtime directive metadata + return true +} + +function genCheckboxModel (el, value) { + if ("development" !== 'production' && + el.attrsMap.checked != null) { + warn$3( + "<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" + + "inline checked attributes will be ignored when using v-model. " + + 'Declare initial values in the component\'s data option instead.' + ); + } + var valueBinding = getBindingAttr(el, 'value') || 'null'; + var trueValueBinding = getBindingAttr(el, 'true-value') || 'true'; + var falseValueBinding = getBindingAttr(el, 'false-value') || 'false'; + addProp(el, 'checked', + "Array.isArray(" + value + ")" + + "?_i(" + value + "," + valueBinding + ")>-1" + + ":_q(" + value + "," + trueValueBinding + ")" + ); + addHandler(el, 'change', + "var $$a=" + value + "," + + '$$el=$event.target,' + + "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" + + 'if(Array.isArray($$a)){' + + "var $$v=" + valueBinding + "," + + '$$i=_i($$a,$$v);' + + "if($$c){$$i<0&&(" + value + "=$$a.concat($$v))}" + + "else{$$i>-1&&(" + value + "=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}" + + "}else{" + value + "=$$c}", + null, true + ); +} + +function genRadioModel (el, value) { + if ("development" !== 'production' && + el.attrsMap.checked != null) { + warn$3( + "<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" + + "inline checked attributes will be ignored when using v-model. " + + 'Declare initial values in the component\'s data option instead.' + ); + } + var valueBinding = getBindingAttr(el, 'value') || 'null'; + addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")")); + addHandler(el, 'change', (value + "=" + valueBinding), null, true); +} + +function genDefaultModel ( + el, + value, + modifiers +) { + { + if (el.tag === 'input' && el.attrsMap.value) { + warn$3( + "<" + (el.tag) + " v-model=\"" + value + "\" value=\"" + (el.attrsMap.value) + "\">:\n" + + 'inline value attributes will be ignored when using v-model. ' + + 'Declare initial values in the component\'s data option instead.' + ); + } + if (el.tag === 'textarea' && el.children.length) { + warn$3( + "<textarea v-model=\"" + value + "\">:\n" + + 'inline content inside <textarea> will be ignored when using v-model. ' + + 'Declare initial values in the component\'s data option instead.' + ); + } + } + + var type = el.attrsMap.type; + var ref = modifiers || {}; + var lazy = ref.lazy; + var number = ref.number; + var trim = ref.trim; + var event = lazy || (isIE && type === 'range') ? 'change' : 'input'; + var needCompositionGuard = !lazy && type !== 'range'; + var isNative = el.tag === 'input' || el.tag === 'textarea'; + + var valueExpression = isNative + ? ("$event.target.value" + (trim ? '.trim()' : '')) + : "$event"; + var code = number || type === 'number' + ? (value + "=_n(" + valueExpression + ")") + : (value + "=" + valueExpression); + if (isNative && needCompositionGuard) { + code = "if($event.target.composing)return;" + code; + } + // inputs with type="file" are read only and setting the input's + // value will throw an error. + if ("development" !== 'production' && + type === 'file') { + warn$3( + "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" + + "File inputs are read only. Use a v-on:change listener instead." + ); + } + addProp(el, 'value', isNative ? ("_s(" + value + ")") : ("(" + value + ")")); + addHandler(el, event, code, null, true); +} + +function genSelect (el, value) { + { + el.children.some(checkOptionWarning); + } + var code = value + "=Array.prototype.filter" + + ".call($event.target.options,function(o){return o.selected})" + + ".map(function(o){return \"_value\" in o ? o._value : o.value})" + + (el.attrsMap.multiple == null ? '[0]' : ''); + addHandler(el, 'change', code, null, true); +} + +function checkOptionWarning (option) { + if (option.type === 1 && + option.tag === 'option' && + option.attrsMap.selected != null) { + warn$3( + "<select v-model=\"" + (option.parent.attrsMap['v-model']) + "\">:\n" + + 'inline selected attributes on <option> will be ignored when using v-model. ' + + 'Declare initial values in the component\'s data option instead.' + ); + return true + } + return false +} + +/* */ + +function text (el, dir) { + if (dir.value) { + addProp(el, 'textContent', ("_s(" + (dir.value) + ")")); + } +} + +/* */ + +function html (el, dir) { + if (dir.value) { + addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")")); + } +} + +var directives$1 = { + model: model$1, + text: text, + html: html +}; + +/* */ + +var cache = Object.create(null); + +var baseOptions = { + isIE: isIE, + expectHTML: true, + modules: modules$1, + staticKeys: genStaticKeys(modules$1), + directives: directives$1, + isReservedTag: isReservedTag, + isUnaryTag: isUnaryTag, + mustUseProp: mustUseProp, + getTagNamespace: getTagNamespace, + isPreTag: isPreTag +}; + +function compile$$1 ( + template, + options +) { + options = options + ? extend(extend({}, baseOptions), options) + : baseOptions; + return compile$1(template, options) +} + +function compileToFunctions ( + template, + options, + vm +) { + var _warn = (options && options.warn) || warn; + // detect possible CSP restriction + /* istanbul ignore if */ + { + try { + new Function('return 1'); + } catch (e) { + if (e.toString().match(/unsafe-eval|CSP/)) { + _warn( + 'It seems you are using the standalone build of Vue.js in an ' + + 'environment with Content Security Policy that prohibits unsafe-eval. ' + + 'The template compiler cannot work in this environment. Consider ' + + 'relaxing the policy to allow unsafe-eval or pre-compiling your ' + + 'templates into render functions.' + ); } - return a === b ? 0 : a > b ? order : -order; } - - // sort on a copy to avoid mutating original array - return arr.slice().sort(comparator); } - - /** - * String contain helper - * - * @param {*} val - * @param {String} search - */ - - function contains(val, search) { - var i; - if (isPlainObject(val)) { - var keys = Object.keys(val); - i = keys.length; - while (i--) { - if (contains(val[keys[i]], search)) { - return true; - } - } - } else if (isArray(val)) { - i = val.length; - while (i--) { - if (contains(val[i], search)) { - return true; - } - } - } else if (val != null) { - return val.toString().toLowerCase().indexOf(search) > -1; + var key = options && options.delimiters + ? String(options.delimiters) + template + : template; + if (cache[key]) { + return cache[key] + } + var res = {}; + var compiled = compile$$1(template, options); + res.render = makeFunction(compiled.render); + var l = compiled.staticRenderFns.length; + res.staticRenderFns = new Array(l); + for (var i = 0; i < l; i++) { + res.staticRenderFns[i] = makeFunction(compiled.staticRenderFns[i]); + } + { + if (res.render === noop || res.staticRenderFns.some(function (fn) { return fn === noop; })) { + _warn( + "failed to compile template:\n\n" + template + "\n\n" + + detectErrors(compiled.ast).join('\n') + + '\n\n', + vm + ); } } + return (cache[key] = res) +} - var digitsRE = /(\d{3})(?=\d)/g; - - // asset collections must be a plain object. - var filters = { - - orderBy: orderBy, - filterBy: filterBy, - limitBy: limitBy, - - /** - * Stringify value. - * - * @param {Number} indent - */ - - json: { - read: function read(value, indent) { - return typeof value === 'string' ? value : JSON.stringify(value, null, arguments.length > 1 ? indent : 2); - }, - write: function write(value) { - try { - return JSON.parse(value); - } catch (e) { - return value; - } - } - }, - - /** - * 'abc' => 'Abc' - */ - - capitalize: function capitalize(value) { - if (!value && value !== 0) return ''; - value = value.toString(); - return value.charAt(0).toUpperCase() + value.slice(1); - }, - - /** - * 'abc' => 'ABC' - */ +function makeFunction (code) { + try { + return new Function(code) + } catch (e) { + return noop + } +} - uppercase: function uppercase(value) { - return value || value === 0 ? value.toString().toUpperCase() : ''; - }, +/* */ - /** - * 'AbC' => 'abc' - */ +var idToTemplate = cached(function (id) { + var el = query(id); + return el && el.innerHTML +}); - lowercase: function lowercase(value) { - return value || value === 0 ? value.toString().toLowerCase() : ''; - }, +var mount = Vue$3.prototype.$mount; +Vue$3.prototype.$mount = function ( + el, + hydrating +) { + el = el && query(el); - /** - * 12345 => $12,345.00 - * - * @param {String} sign - * @param {Number} decimals Decimal places - */ - - currency: function currency(value, _currency, decimals) { - value = parseFloat(value); - if (!isFinite(value) || !value && value !== 0) return ''; - _currency = _currency != null ? _currency : '$'; - decimals = decimals != null ? decimals : 2; - var stringified = Math.abs(value).toFixed(decimals); - var _int = decimals ? stringified.slice(0, -1 - decimals) : stringified; - var i = _int.length % 3; - var head = i > 0 ? _int.slice(0, i) + (_int.length > 3 ? ',' : '') : ''; - var _float = decimals ? stringified.slice(-1 - decimals) : ''; - var sign = value < 0 ? '-' : ''; - return sign + _currency + head + _int.slice(i).replace(digitsRE, '$1,') + _float; - }, + /* istanbul ignore if */ + if (el === document.body || el === document.documentElement) { + "development" !== 'production' && warn( + "Do not mount Vue to <html> or <body> - mount to normal elements instead." + ); + return this + } - /** - * 'item' => 'items' - * - * @params - * an array of strings corresponding to - * the single, double, triple ... forms of the word to - * be pluralized. When the number to be pluralized - * exceeds the length of the args, it will use the last - * entry in the array. - * - * e.g. ['single', 'double', 'triple', 'multiple'] - */ - - pluralize: function pluralize(value) { - var args = toArray(arguments, 1); - var length = args.length; - if (length > 1) { - var index = value % 10 - 1; - return index in args ? args[index] : args[length - 1]; + var options = this.$options; + // resolve template/el and convert to render function + if (!options.render) { + var template = options.template; + if (template) { + if (typeof template === 'string') { + if (template.charAt(0) === '#') { + template = idToTemplate(template); + } + } else if (template.nodeType) { + template = template.innerHTML; } else { - return args[0] + (value === 1 ? '' : 's'); - } - }, - - /** - * Debounce a handler function. - * - * @param {Function} handler - * @param {Number} delay = 300 - * @return {Function} - */ - - debounce: function debounce(handler, delay) { - if (!handler) return; - if (!delay) { - delay = 300; - } - return _debounce(handler, delay); - } - }; - - function installGlobalAPI (Vue) { - /** - * Vue and every constructor that extends Vue has an - * associated options object, which can be accessed during - * compilation steps as `this.constructor.options`. - * - * These can be seen as the default options of every - * Vue instance. - */ - - Vue.options = { - directives: directives, - elementDirectives: elementDirectives, - filters: filters, - transitions: {}, - components: {}, - partials: {}, - replace: true - }; - - /** - * Expose useful internals - */ - - Vue.util = util; - Vue.config = config; - Vue.set = set; - Vue['delete'] = del; - Vue.nextTick = nextTick; - - /** - * The following are exposed for advanced usage / plugins - */ - - Vue.compiler = compiler; - Vue.FragmentFactory = FragmentFactory; - Vue.internalDirectives = internalDirectives; - Vue.parsers = { - path: path, - text: text, - template: template, - directive: directive, - expression: expression - }; - - /** - * Each instance constructor, including Vue, has a unique - * cid. This enables us to create wrapped "child - * constructors" for prototypal inheritance and cache them. - */ - - Vue.cid = 0; - var cid = 1; - - /** - * Class inheritance - * - * @param {Object} extendOptions - */ - - Vue.extend = function (extendOptions) { - extendOptions = extendOptions || {}; - var Super = this; - var isFirstExtend = Super.cid === 0; - if (isFirstExtend && extendOptions._Ctor) { - return extendOptions._Ctor; - } - var name = extendOptions.name || Super.options.name; - if ('development' !== 'production') { - if (!/^[a-zA-Z][\w-]*$/.test(name)) { - warn('Invalid component name: "' + name + '". Component names ' + 'can only contain alphanumeric characaters and the hyphen.'); - name = null; + { + warn('invalid template option:' + template, this); } + return this } - var Sub = createClass(name || 'VueComponent'); - Sub.prototype = Object.create(Super.prototype); - Sub.prototype.constructor = Sub; - Sub.cid = cid++; - Sub.options = mergeOptions(Super.options, extendOptions); - Sub['super'] = Super; - // allow further extension - Sub.extend = Super.extend; - // create asset registers, so extended classes - // can have their private assets too. - config._assetTypes.forEach(function (type) { - Sub[type] = Super[type]; - }); - // enable recursive self-lookup - if (name) { - Sub.options.components[name] = Sub; - } - // cache constructor - if (isFirstExtend) { - extendOptions._Ctor = Sub; - } - return Sub; - }; - - /** - * A function that returns a sub-class constructor with the - * given name. This gives us much nicer output when - * logging instances in the console. - * - * @param {String} name - * @return {Function} - */ - - function createClass(name) { - /* eslint-disable no-new-func */ - return new Function('return function ' + classify(name) + ' (options) { this._init(options) }')(); - /* eslint-enable no-new-func */ + } else if (el) { + template = getOuterHTML(el); + } + if (template) { + var ref = compileToFunctions(template, { + warn: warn, + shouldDecodeNewlines: shouldDecodeNewlines, + delimiters: options.delimiters + }, this); + var render = ref.render; + var staticRenderFns = ref.staticRenderFns; + options.render = render; + options.staticRenderFns = staticRenderFns; } - - /** - * Plugin system - * - * @param {Object} plugin - */ - - Vue.use = function (plugin) { - /* istanbul ignore if */ - if (plugin.installed) { - return; - } - // additional parameters - var args = toArray(arguments, 1); - args.unshift(this); - if (typeof plugin.install === 'function') { - plugin.install.apply(plugin, args); - } else { - plugin.apply(null, args); - } - plugin.installed = true; - return this; - }; - - /** - * Apply a global mixin by merging it into the default - * options. - */ - - Vue.mixin = function (mixin) { - Vue.options = mergeOptions(Vue.options, mixin); - }; - - /** - * Create asset registration methods with the following - * signature: - * - * @param {String} id - * @param {*} definition - */ - - config._assetTypes.forEach(function (type) { - Vue[type] = function (id, definition) { - if (!definition) { - return this.options[type + 's'][id]; - } else { - /* istanbul ignore if */ - if ('development' !== 'production') { - if (type === 'component' && (commonTagRE.test(id) || reservedTagRE.test(id))) { - warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + id); - } - } - if (type === 'component' && isPlainObject(definition)) { - if (!definition.name) { - definition.name = id; - } - definition = Vue.extend(definition); - } - this.options[type + 's'][id] = definition; - return definition; - } - }; - }); - - // expose internal transition API - extend(Vue.transition, transition); } + return mount.call(this, el, hydrating) +}; - installGlobalAPI(Vue); - - Vue.version = '1.0.26'; +/** + * Get outerHTML of elements, taking care + * of SVG elements in IE as well. + */ +function getOuterHTML (el) { + if (el.outerHTML) { + return el.outerHTML + } else { + var container = document.createElement('div'); + container.appendChild(el.cloneNode(true)); + return container.innerHTML + } +} - // devtools global hook - /* istanbul ignore next */ - setTimeout(function () { - if (config.devtools) { - if (devtools) { - devtools.emit('init', Vue); - } else if ('development' !== 'production' && inBrowser && /Chrome\/\d+/.test(window.navigator.userAgent)) { - console.log('Download the Vue Devtools for a better development experience:\n' + 'https://github.com/vuejs/vue-devtools'); - } - } - }, 0); +Vue$3.compile = compileToFunctions; - return Vue; +return Vue$3; -}));
\ No newline at end of file +}))); diff --git a/vendor/assets/javascripts/vue.min.js b/vendor/assets/javascripts/vue.min.js index 2c9a8a0e117..f86786dd454 100644 --- a/vendor/assets/javascripts/vue.min.js +++ b/vendor/assets/javascripts/vue.min.js @@ -1,9 +1,7 @@ /*! - * Vue.js v1.0.26 - * (c) 2016 Evan You + * Vue.js v2.0.3 + * (c) 2014-2016 Evan You * Released under the MIT License. */ -!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.Vue=e()}(this,function(){"use strict";function t(e,n,r){if(i(e,n))return void(e[n]=r);if(e._isVue)return void t(e._data,n,r);var s=e.__ob__;if(!s)return void(e[n]=r);if(s.convert(n,r),s.dep.notify(),s.vms)for(var o=s.vms.length;o--;){var a=s.vms[o];a._proxy(n),a._digest()}return r}function e(t,e){if(i(t,e)){delete t[e];var n=t.__ob__;if(!n)return void(t._isVue&&(delete t._data[e],t._digest()));if(n.dep.notify(),n.vms)for(var r=n.vms.length;r--;){var 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\ No newline at end of file diff --git a/vendor/assets/stylesheets/katex.css b/vendor/assets/stylesheets/katex.css new file mode 100644 index 00000000000..3e62df2329c --- /dev/null +++ b/vendor/assets/stylesheets/katex.css @@ -0,0 +1,975 @@ +/* +The MIT License (MIT) + +Copyright (c) 2015 Khan Academy + +This software also uses portions of the underscore.js project, which is +MIT licensed with the following copyright: + +Copyright (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative +Reporters & Editors + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +/* + Here is how to build a version of KaTeX that works with gitlab. + + The problem is that the standard procedure for changing font location doesn't work for the empty string. + + 1. Clone KaTeX. Anything later than 4fb9445a9 (is merged into master) will do. + 2. make (requires node) + 3. sed -i 's,fonts/,,' build/katex.css + 4. Copy build/katex.js, build/katex.css and fonts/* to gitlab. +*/ + +@font-face { + font-family: 'KaTeX_AMS'; + src: url('KaTeX_AMS-Regular.eot'); + src: url('KaTeX_AMS-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_AMS-Regular.woff2') format('woff2'), url('KaTeX_AMS-Regular.woff') format('woff'), url('KaTeX_AMS-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Caligraphic'; + src: url('KaTeX_Caligraphic-Bold.eot'); + src: url('KaTeX_Caligraphic-Bold.eot#iefix') format('embedded-opentype'), url('KaTeX_Caligraphic-Bold.woff2') format('woff2'), url('KaTeX_Caligraphic-Bold.woff') format('woff'), url('KaTeX_Caligraphic-Bold.ttf') format('truetype'); + font-weight: bold; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Caligraphic'; + src: url('KaTeX_Caligraphic-Regular.eot'); + src: url('KaTeX_Caligraphic-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Caligraphic-Regular.woff2') format('woff2'), url('KaTeX_Caligraphic-Regular.woff') format('woff'), url('KaTeX_Caligraphic-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Fraktur'; + src: url('KaTeX_Fraktur-Bold.eot'); + src: url('KaTeX_Fraktur-Bold.eot#iefix') format('embedded-opentype'), url('KaTeX_Fraktur-Bold.woff2') format('woff2'), url('KaTeX_Fraktur-Bold.woff') format('woff'), url('KaTeX_Fraktur-Bold.ttf') format('truetype'); + font-weight: bold; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Fraktur'; + src: url('KaTeX_Fraktur-Regular.eot'); + src: url('KaTeX_Fraktur-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Fraktur-Regular.woff2') format('woff2'), url('KaTeX_Fraktur-Regular.woff') format('woff'), url('KaTeX_Fraktur-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Main'; + src: url('KaTeX_Main-Bold.eot'); + src: url('KaTeX_Main-Bold.eot#iefix') format('embedded-opentype'), url('KaTeX_Main-Bold.woff2') format('woff2'), url('KaTeX_Main-Bold.woff') format('woff'), url('KaTeX_Main-Bold.ttf') format('truetype'); + font-weight: bold; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Main'; + src: url('KaTeX_Main-Italic.eot'); + src: url('KaTeX_Main-Italic.eot#iefix') format('embedded-opentype'), url('KaTeX_Main-Italic.woff2') format('woff2'), url('KaTeX_Main-Italic.woff') format('woff'), url('KaTeX_Main-Italic.ttf') format('truetype'); + font-weight: normal; + font-style: italic; +} +@font-face { + font-family: 'KaTeX_Main'; + src: url('KaTeX_Main-Regular.eot'); + src: url('KaTeX_Main-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Main-Regular.woff2') format('woff2'), url('KaTeX_Main-Regular.woff') format('woff'), url('KaTeX_Main-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Math'; + src: url('KaTeX_Math-Italic.eot'); + src: url('KaTeX_Math-Italic.eot#iefix') format('embedded-opentype'), url('KaTeX_Math-Italic.woff2') format('woff2'), url('KaTeX_Math-Italic.woff') format('woff'), url('KaTeX_Math-Italic.ttf') format('truetype'); + font-weight: normal; + font-style: italic; +} +@font-face { + font-family: 'KaTeX_SansSerif'; + src: url('KaTeX_SansSerif-Regular.eot'); + src: url('KaTeX_SansSerif-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_SansSerif-Regular.woff2') format('woff2'), url('KaTeX_SansSerif-Regular.woff') format('woff'), url('KaTeX_SansSerif-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Script'; + src: url('KaTeX_Script-Regular.eot'); + src: url('KaTeX_Script-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Script-Regular.woff2') format('woff2'), url('KaTeX_Script-Regular.woff') format('woff'), url('KaTeX_Script-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Size1'; + src: url('KaTeX_Size1-Regular.eot'); + src: url('KaTeX_Size1-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Size1-Regular.woff2') format('woff2'), url('KaTeX_Size1-Regular.woff') format('woff'), url('KaTeX_Size1-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Size2'; + src: url('KaTeX_Size2-Regular.eot'); + src: url('KaTeX_Size2-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Size2-Regular.woff2') format('woff2'), url('KaTeX_Size2-Regular.woff') format('woff'), url('KaTeX_Size2-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Size3'; + src: url('KaTeX_Size3-Regular.eot'); + src: url('KaTeX_Size3-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Size3-Regular.woff2') format('woff2'), url('KaTeX_Size3-Regular.woff') format('woff'), url('KaTeX_Size3-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Size4'; + src: url('KaTeX_Size4-Regular.eot'); + src: url('KaTeX_Size4-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Size4-Regular.woff2') format('woff2'), url('KaTeX_Size4-Regular.woff') format('woff'), url('KaTeX_Size4-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +@font-face { + font-family: 'KaTeX_Typewriter'; + src: url('KaTeX_Typewriter-Regular.eot'); + src: url('KaTeX_Typewriter-Regular.eot#iefix') format('embedded-opentype'), url('KaTeX_Typewriter-Regular.woff2') format('woff2'), url('KaTeX_Typewriter-Regular.woff') format('woff'), url('KaTeX_Typewriter-Regular.ttf') format('truetype'); + font-weight: normal; + font-style: normal; +} +.katex-display { + display: block; + margin: 1em 0; + text-align: center; +} +.katex-display > .katex { + display: inline-block; + text-align: initial; +} +.katex { + font: normal 1.21em KaTeX_Main, Times New Roman, serif; + line-height: 1.2; + white-space: nowrap; + text-indent: 0; +} +.katex .katex-html { + display: inline-block; +} +.katex .katex-mathml { + position: absolute; + clip: rect(1px, 1px, 1px, 1px); + padding: 0; + border: 0; + height: 1px; + width: 1px; + overflow: hidden; +} +.katex .base { + display: inline-block; +} +.katex .strut { + display: inline-block; +} +.katex .mathit { + font-family: KaTeX_Math; + font-style: italic; +} +.katex .mathbf { + font-family: KaTeX_Main; + font-weight: bold; +} +.katex .amsrm { + font-family: KaTeX_AMS; +} +.katex .mathbb { + font-family: KaTeX_AMS; +} +.katex .mathcal { + font-family: KaTeX_Caligraphic; +} +.katex .mathfrak { + font-family: KaTeX_Fraktur; +} +.katex .mathtt { + font-family: KaTeX_Typewriter; +} +.katex .mathscr { + font-family: KaTeX_Script; +} +.katex .mathsf { + font-family: KaTeX_SansSerif; +} +.katex .mainit { + font-family: KaTeX_Main; + font-style: italic; +} +.katex .textstyle > .mord + .mop { + margin-left: 0.16667em; +} +.katex .textstyle > .mord + .mbin { + margin-left: 0.22222em; +} +.katex .textstyle > .mord + .mrel { + margin-left: 0.27778em; +} +.katex .textstyle > .mord + .minner { + margin-left: 0.16667em; +} +.katex .textstyle > .mop + .mord { + margin-left: 0.16667em; +} +.katex .textstyle > .mop + .mop { + margin-left: 0.16667em; +} +.katex .textstyle > .mop + .mrel { + margin-left: 0.27778em; +} +.katex .textstyle > .mop + .minner { + margin-left: 0.16667em; +} +.katex .textstyle > .mbin + .mord { + margin-left: 0.22222em; +} +.katex .textstyle > .mbin + .mop { + margin-left: 0.22222em; +} +.katex .textstyle > .mbin + .mopen { + margin-left: 0.22222em; +} +.katex .textstyle > .mbin + .minner { + margin-left: 0.22222em; +} +.katex .textstyle > .mrel + .mord { + margin-left: 0.27778em; +} +.katex .textstyle > .mrel + .mop { + margin-left: 0.27778em; +} +.katex .textstyle > .mrel + .mopen { + margin-left: 0.27778em; +} +.katex .textstyle > .mrel + .minner { + margin-left: 0.27778em; +} +.katex .textstyle > .mclose + .mop { + margin-left: 0.16667em; +} +.katex .textstyle > .mclose + .mbin { + margin-left: 0.22222em; +} +.katex .textstyle > .mclose + .mrel { + margin-left: 0.27778em; +} +.katex .textstyle > .mclose + .minner { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mord { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mop { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mrel { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mopen { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mclose { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .mpunct { + margin-left: 0.16667em; +} +.katex .textstyle > .mpunct + .minner { + margin-left: 0.16667em; +} +.katex .textstyle > .minner + .mord { + margin-left: 0.16667em; +} +.katex .textstyle > .minner + .mop { + margin-left: 0.16667em; +} +.katex .textstyle > .minner + .mbin { + margin-left: 0.22222em; +} +.katex .textstyle > .minner + .mrel { + margin-left: 0.27778em; +} +.katex .textstyle > .minner + .mopen { + margin-left: 0.16667em; +} +.katex .textstyle > .minner + .mpunct { + margin-left: 0.16667em; +} +.katex .textstyle > .minner + .minner { + margin-left: 0.16667em; +} +.katex .mord + .mop { + margin-left: 0.16667em; +} +.katex .mop + .mord { + margin-left: 0.16667em; +} +.katex .mop + .mop { + margin-left: 0.16667em; +} +.katex .mclose + .mop { + margin-left: 0.16667em; +} +.katex .minner + .mop { + margin-left: 0.16667em; +} +.katex .reset-textstyle.textstyle { + font-size: 1em; +} +.katex .reset-textstyle.scriptstyle { + font-size: 0.7em; +} +.katex .reset-textstyle.scriptscriptstyle { + font-size: 0.5em; +} +.katex .reset-scriptstyle.textstyle { + font-size: 1.42857em; +} +.katex .reset-scriptstyle.scriptstyle { + font-size: 1em; +} +.katex .reset-scriptstyle.scriptscriptstyle { + font-size: 0.71429em; +} +.katex .reset-scriptscriptstyle.textstyle { + font-size: 2em; +} +.katex .reset-scriptscriptstyle.scriptstyle { + font-size: 1.4em; +} +.katex .reset-scriptscriptstyle.scriptscriptstyle { + font-size: 1em; +} +.katex .style-wrap { + position: relative; +} +.katex .vlist { + display: inline-block; +} +.katex .vlist > span { + display: block; + height: 0; + position: relative; +} +.katex .vlist > span > span { + display: inline-block; +} +.katex .vlist .baseline-fix { + display: inline-table; + table-layout: fixed; +} +.katex .msupsub { + text-align: left; +} +.katex .mfrac > span > span { + text-align: center; +} +.katex .mfrac .frac-line { + width: 100%; +} +.katex .mfrac .frac-line:before { + border-bottom-style: solid; + border-bottom-width: 1px; + content: ""; + display: block; +} +.katex .mfrac .frac-line:after { + border-bottom-style: solid; + border-bottom-width: 0.04em; + content: ""; + display: block; + margin-top: -1px; +} +.katex .mspace { + display: inline-block; +} +.katex .mspace.negativethinspace { + margin-left: -0.16667em; +} +.katex .mspace.thinspace { + width: 0.16667em; +} +.katex .mspace.mediumspace { + width: 0.22222em; +} +.katex .mspace.thickspace { + width: 0.27778em; +} +.katex .mspace.enspace { + width: 0.5em; +} +.katex .mspace.quad { + width: 1em; +} +.katex .mspace.qquad { + width: 2em; +} +.katex .llap, +.katex .rlap { + width: 0; + position: relative; +} +.katex .llap > .inner, +.katex .rlap > .inner { + position: absolute; +} +.katex .llap > .fix, +.katex .rlap > .fix { + display: inline-block; +} +.katex .llap > .inner { + right: 0; +} +.katex .rlap > .inner { + left: 0; +} +.katex .katex-logo .a { + font-size: 0.75em; + margin-left: -0.32em; + position: relative; + top: -0.2em; +} +.katex .katex-logo .t { + margin-left: -0.23em; +} +.katex .katex-logo .e { + margin-left: -0.1667em; + position: relative; + top: 0.2155em; +} +.katex .katex-logo .x { + margin-left: -0.125em; +} +.katex .rule { + display: inline-block; + border: solid 0; + position: relative; +} +.katex .overline .overline-line, +.katex .underline .underline-line { + width: 100%; +} +.katex .overline .overline-line:before, +.katex .underline .underline-line:before { + border-bottom-style: solid; + border-bottom-width: 1px; + content: ""; + display: block; +} +.katex .overline .overline-line:after, +.katex .underline .underline-line:after { + border-bottom-style: solid; + border-bottom-width: 0.04em; + content: ""; + display: block; + margin-top: -1px; +} +.katex .sqrt > .sqrt-sign { + position: relative; +} +.katex .sqrt .sqrt-line { + width: 100%; +} +.katex .sqrt .sqrt-line:before { + border-bottom-style: solid; + border-bottom-width: 1px; + content: ""; + display: block; +} +.katex .sqrt .sqrt-line:after { + border-bottom-style: solid; + border-bottom-width: 0.04em; + content: ""; + display: block; + margin-top: -1px; +} +.katex .sqrt > .root { + margin-left: 0.27777778em; + margin-right: -0.55555556em; +} +.katex .sizing, +.katex .fontsize-ensurer { + display: inline-block; +} +.katex .sizing.reset-size1.size1, +.katex .fontsize-ensurer.reset-size1.size1 { + font-size: 1em; +} +.katex .sizing.reset-size1.size2, +.katex .fontsize-ensurer.reset-size1.size2 { + font-size: 1.4em; +} +.katex .sizing.reset-size1.size3, +.katex .fontsize-ensurer.reset-size1.size3 { + font-size: 1.6em; +} +.katex .sizing.reset-size1.size4, +.katex .fontsize-ensurer.reset-size1.size4 { + font-size: 1.8em; +} +.katex .sizing.reset-size1.size5, +.katex .fontsize-ensurer.reset-size1.size5 { + font-size: 2em; +} +.katex .sizing.reset-size1.size6, +.katex .fontsize-ensurer.reset-size1.size6 { + font-size: 2.4em; +} +.katex .sizing.reset-size1.size7, +.katex .fontsize-ensurer.reset-size1.size7 { + font-size: 2.88em; +} +.katex .sizing.reset-size1.size8, +.katex .fontsize-ensurer.reset-size1.size8 { + font-size: 3.46em; +} +.katex .sizing.reset-size1.size9, +.katex .fontsize-ensurer.reset-size1.size9 { + font-size: 4.14em; +} +.katex .sizing.reset-size1.size10, +.katex .fontsize-ensurer.reset-size1.size10 { + font-size: 4.98em; +} +.katex .sizing.reset-size2.size1, +.katex .fontsize-ensurer.reset-size2.size1 { + font-size: 0.71428571em; +} +.katex .sizing.reset-size2.size2, +.katex .fontsize-ensurer.reset-size2.size2 { + font-size: 1em; +} +.katex .sizing.reset-size2.size3, +.katex .fontsize-ensurer.reset-size2.size3 { + font-size: 1.14285714em; +} +.katex .sizing.reset-size2.size4, +.katex .fontsize-ensurer.reset-size2.size4 { + font-size: 1.28571429em; +} +.katex .sizing.reset-size2.size5, +.katex .fontsize-ensurer.reset-size2.size5 { + font-size: 1.42857143em; +} +.katex .sizing.reset-size2.size6, +.katex .fontsize-ensurer.reset-size2.size6 { + font-size: 1.71428571em; +} +.katex .sizing.reset-size2.size7, +.katex .fontsize-ensurer.reset-size2.size7 { + font-size: 2.05714286em; +} +.katex .sizing.reset-size2.size8, +.katex .fontsize-ensurer.reset-size2.size8 { + font-size: 2.47142857em; +} +.katex .sizing.reset-size2.size9, +.katex .fontsize-ensurer.reset-size2.size9 { + font-size: 2.95714286em; +} +.katex .sizing.reset-size2.size10, +.katex .fontsize-ensurer.reset-size2.size10 { + font-size: 3.55714286em; +} +.katex .sizing.reset-size3.size1, +.katex .fontsize-ensurer.reset-size3.size1 { + font-size: 0.625em; +} +.katex .sizing.reset-size3.size2, +.katex .fontsize-ensurer.reset-size3.size2 { + font-size: 0.875em; +} +.katex .sizing.reset-size3.size3, +.katex .fontsize-ensurer.reset-size3.size3 { + font-size: 1em; +} +.katex .sizing.reset-size3.size4, +.katex .fontsize-ensurer.reset-size3.size4 { + font-size: 1.125em; +} +.katex .sizing.reset-size3.size5, +.katex .fontsize-ensurer.reset-size3.size5 { + font-size: 1.25em; +} +.katex .sizing.reset-size3.size6, +.katex .fontsize-ensurer.reset-size3.size6 { + font-size: 1.5em; +} +.katex .sizing.reset-size3.size7, +.katex .fontsize-ensurer.reset-size3.size7 { + font-size: 1.8em; +} +.katex .sizing.reset-size3.size8, +.katex .fontsize-ensurer.reset-size3.size8 { + font-size: 2.1625em; +} +.katex .sizing.reset-size3.size9, +.katex .fontsize-ensurer.reset-size3.size9 { + font-size: 2.5875em; +} +.katex .sizing.reset-size3.size10, +.katex .fontsize-ensurer.reset-size3.size10 { + font-size: 3.1125em; +} +.katex .sizing.reset-size4.size1, +.katex .fontsize-ensurer.reset-size4.size1 { + font-size: 0.55555556em; +} +.katex .sizing.reset-size4.size2, +.katex .fontsize-ensurer.reset-size4.size2 { + font-size: 0.77777778em; +} +.katex .sizing.reset-size4.size3, +.katex .fontsize-ensurer.reset-size4.size3 { + font-size: 0.88888889em; +} +.katex .sizing.reset-size4.size4, +.katex .fontsize-ensurer.reset-size4.size4 { + font-size: 1em; +} +.katex .sizing.reset-size4.size5, +.katex .fontsize-ensurer.reset-size4.size5 { + font-size: 1.11111111em; +} +.katex .sizing.reset-size4.size6, +.katex .fontsize-ensurer.reset-size4.size6 { + font-size: 1.33333333em; +} +.katex .sizing.reset-size4.size7, +.katex .fontsize-ensurer.reset-size4.size7 { + font-size: 1.6em; 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