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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// limitations under the License.
// ECMAScript 402 API implementation is broken into separate files for
// each service. The build system combines them together into one
// Intl namespace.
/**
* Initializes the given object so it's a valid Collator instance.
* Useful for subclassing.
*/
function initializeCollator(collator, locales, options) {
if (collator.hasOwnProperty('__initializedIntlObject')) {
throw new TypeError('Trying to re-initialize Collator object.');
}
if (options === undefined) {
options = {};
}
var getOption = getGetOption(options, 'collator');
var internalOptions = {};
defineWEProperty(internalOptions, 'usage', getOption(
'usage', 'string', ['sort', 'search'], 'sort'));
var sensitivity = getOption('sensitivity', 'string',
['base', 'accent', 'case', 'variant']);
if (sensitivity === undefined && internalOptions.usage === 'sort') {
sensitivity = 'variant';
}
defineWEProperty(internalOptions, 'sensitivity', sensitivity);
defineWEProperty(internalOptions, 'ignorePunctuation', getOption(
'ignorePunctuation', 'boolean', undefined, false));
var locale = resolveLocale('collator', locales, options);
// ICU can't take kb, kc... parameters through localeID, so we need to pass
// them as options.
// One exception is -co- which has to be part of the extension, but only for
// usage: sort, and its value can't be 'standard' or 'search'.
var extensionMap = parseExtension(locale.extension);
setOptions(
options, extensionMap, COLLATOR_KEY_MAP, getOption, internalOptions);
var collation = 'default';
var extension = '';
if (extensionMap.hasOwnProperty('co') && internalOptions.usage === 'sort') {
if (ALLOWED_CO_VALUES.indexOf(extensionMap.co) !== -1) {
extension = '-u-co-' + extensionMap.co;
// ICU can't tell us what the collation is, so save user's input.
collation = extensionMap.co;
}
} else if (internalOptions.usage === 'search') {
extension = '-u-co-search';
}
defineWEProperty(internalOptions, 'collation', collation);
var requestedLocale = locale.locale + extension;
// We define all properties C++ code may produce, to prevent security
// problems. If malicious user decides to redefine Object.prototype.locale
// we can't just use plain x.locale = 'us' or in C++ Set("locale", "us").
// Object.defineProperties will either succeed defining or throw an error.
var resolved = Object.defineProperties({}, {
caseFirst: {writable: true},
collation: {value: internalOptions.collation, writable: true},
ignorePunctuation: {writable: true},
locale: {writable: true},
numeric: {writable: true},
requestedLocale: {value: requestedLocale, writable: true},
sensitivity: {writable: true},
strength: {writable: true},
usage: {value: internalOptions.usage, writable: true}
});
var internalCollator = %CreateCollator(requestedLocale,
internalOptions,
resolved);
// Writable, configurable and enumerable are set to false by default.
Object.defineProperty(collator, 'collator', {value: internalCollator});
Object.defineProperty(collator, '__initializedIntlObject',
{value: 'collator'});
Object.defineProperty(collator, 'resolved', {value: resolved});
return collator;
}
/**
* Constructs Intl.Collator object given optional locales and options
* parameters.
*
* @constructor
*/
%SetProperty(Intl, 'Collator', function() {
var locales = arguments[0];
var options = arguments[1];
if (!this || this === Intl) {
// Constructor is called as a function.
return new Intl.Collator(locales, options);
}
return initializeCollator(toObject(this), locales, options);
},
ATTRIBUTES.DONT_ENUM
);
/**
* Collator resolvedOptions method.
*/
%SetProperty(Intl.Collator.prototype, 'resolvedOptions', function() {
if (%_IsConstructCall()) {
throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR);
}
if (!this || typeof this !== 'object' ||
this.__initializedIntlObject !== 'collator') {
throw new TypeError('resolvedOptions method called on a non-object ' +
'or on a object that is not Intl.Collator.');
}
var coll = this;
var locale = getOptimalLanguageTag(coll.resolved.requestedLocale,
coll.resolved.locale);
return {
locale: locale,
usage: coll.resolved.usage,
sensitivity: coll.resolved.sensitivity,
ignorePunctuation: coll.resolved.ignorePunctuation,
numeric: coll.resolved.numeric,
caseFirst: coll.resolved.caseFirst,
collation: coll.resolved.collation
};
},
ATTRIBUTES.DONT_ENUM
);
%FunctionSetName(Intl.Collator.prototype.resolvedOptions, 'resolvedOptions');
%FunctionRemovePrototype(Intl.Collator.prototype.resolvedOptions);
%SetNativeFlag(Intl.Collator.prototype.resolvedOptions);
/**
* Returns the subset of the given locale list for which this locale list
* has a matching (possibly fallback) locale. Locales appear in the same
* order in the returned list as in the input list.
* Options are optional parameter.
*/
%SetProperty(Intl.Collator, 'supportedLocalesOf', function(locales) {
if (%_IsConstructCall()) {
throw new TypeError(ORDINARY_FUNCTION_CALLED_AS_CONSTRUCTOR);
}
return supportedLocalesOf('collator', locales, arguments[1]);
},
ATTRIBUTES.DONT_ENUM
);
%FunctionSetName(Intl.Collator.supportedLocalesOf, 'supportedLocalesOf');
%FunctionRemovePrototype(Intl.Collator.supportedLocalesOf);
%SetNativeFlag(Intl.Collator.supportedLocalesOf);
/**
* When the compare method is called with two arguments x and y, it returns a
* Number other than NaN that represents the result of a locale-sensitive
* String comparison of x with y.
* The result is intended to order String values in the sort order specified
* by the effective locale and collation options computed during construction
* of this Collator object, and will be negative, zero, or positive, depending
* on whether x comes before y in the sort order, the Strings are equal under
* the sort order, or x comes after y in the sort order, respectively.
*/
function compare(collator, x, y) {
return %InternalCompare(collator.collator, String(x), String(y));
};
addBoundMethod(Intl.Collator, 'compare', compare, 2);
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