diff options
Diffstat (limited to 'chromium/v8/src/proxy.js')
| -rw-r--r-- | chromium/v8/src/proxy.js | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/chromium/v8/src/proxy.js b/chromium/v8/src/proxy.js deleted file mode 100644 index cc45b32b3df..00000000000 --- a/chromium/v8/src/proxy.js +++ /dev/null @@ -1,210 +0,0 @@ -// Copyright 2011 the V8 project authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -(function(global, utils) { - -"use strict"; - -%CheckIsBootstrapping(); - -// ---------------------------------------------------------------------------- -// Imports - -var GlobalFunction = global.Function; -var GlobalObject = global.Object; - -var ToNameArray; - -utils.Import(function(from) { - ToNameArray = from.ToNameArray; -}); - -//---------------------------------------------------------------------------- - -function ProxyCreate(handler, proto) { - if (!IS_SPEC_OBJECT(handler)) - throw MakeTypeError(kProxyHandlerNonObject, "create") - if (IS_UNDEFINED(proto)) - proto = null - else if (!(IS_SPEC_OBJECT(proto) || IS_NULL(proto))) - throw MakeTypeError(kProxyProtoNonObject) - return %CreateJSProxy(handler, proto) -} - -function ProxyCreateFunction(handler, callTrap, constructTrap) { - if (!IS_SPEC_OBJECT(handler)) - throw MakeTypeError(kProxyHandlerNonObject, "createFunction") - if (!IS_CALLABLE(callTrap)) - throw MakeTypeError(kProxyTrapFunctionExpected, "call") - if (IS_UNDEFINED(constructTrap)) { - constructTrap = DerivedConstructTrap(callTrap) - } else if (IS_CALLABLE(constructTrap)) { - // Make sure the trap receives 'undefined' as this. - var construct = constructTrap - constructTrap = function() { - return %Apply(construct, UNDEFINED, arguments, 0, %_ArgumentsLength()); - } - } else { - throw MakeTypeError(kProxyTrapFunctionExpected, "construct") - } - return %CreateJSFunctionProxy( - handler, callTrap, constructTrap, GlobalFunction.prototype) -} - -// ------------------------------------------------------------------- -// Proxy Builtins - -function DerivedConstructTrap(callTrap) { - return function() { - var proto = this.prototype - if (!IS_SPEC_OBJECT(proto)) proto = GlobalObject.prototype - var obj = { __proto__: proto }; - var result = %Apply(callTrap, obj, arguments, 0, %_ArgumentsLength()); - return IS_SPEC_OBJECT(result) ? result : obj - } -} - -function DelegateCallAndConstruct(callTrap, constructTrap) { - return function() { - return %Apply(%_IsConstructCall() ? constructTrap : callTrap, - this, arguments, 0, %_ArgumentsLength()) - } -} - -function DerivedGetTrap(receiver, name) { - var desc = this.getPropertyDescriptor(name) - if (IS_UNDEFINED(desc)) { return desc } - if ('value' in desc) { - return desc.value - } else { - if (IS_UNDEFINED(desc.get)) { return desc.get } - // The proposal says: desc.get.call(receiver) - return %_CallFunction(receiver, desc.get) - } -} - -function DerivedSetTrap(receiver, name, val) { - var desc = this.getOwnPropertyDescriptor(name) - if (desc) { - if ('writable' in desc) { - if (desc.writable) { - desc.value = val - this.defineProperty(name, desc) - return true - } else { - return false - } - } else { // accessor - if (desc.set) { - // The proposal says: desc.set.call(receiver, val) - %_CallFunction(receiver, val, desc.set) - return true - } else { - return false - } - } - } - desc = this.getPropertyDescriptor(name) - if (desc) { - if ('writable' in desc) { - if (desc.writable) { - // fall through - } else { - return false - } - } else { // accessor - if (desc.set) { - // The proposal says: desc.set.call(receiver, val) - %_CallFunction(receiver, val, desc.set) - return true - } else { - return false - } - } - } - this.defineProperty(name, { - value: val, - writable: true, - enumerable: true, - configurable: true}); - return true; -} - -function DerivedHasTrap(name) { - return !!this.getPropertyDescriptor(name) -} - -function DerivedHasOwnTrap(name) { - return !!this.getOwnPropertyDescriptor(name) -} - -function DerivedKeysTrap() { - var names = this.getOwnPropertyNames() - var enumerableNames = [] - for (var i = 0, count = 0; i < names.length; ++i) { - var name = names[i] - if (IS_SYMBOL(name)) continue - var desc = this.getOwnPropertyDescriptor(TO_STRING(name)) - if (!IS_UNDEFINED(desc) && desc.enumerable) { - enumerableNames[count++] = names[i] - } - } - return enumerableNames -} - -function DerivedEnumerateTrap() { - var names = this.getPropertyNames() - var enumerableNames = [] - for (var i = 0, count = 0; i < names.length; ++i) { - var name = names[i] - if (IS_SYMBOL(name)) continue - var desc = this.getPropertyDescriptor(TO_STRING(name)) - if (!IS_UNDEFINED(desc)) { - if (!desc.configurable) { - throw MakeTypeError(kProxyPropNotConfigurable, - this, name, "getPropertyDescriptor") - } - if (desc.enumerable) enumerableNames[count++] = names[i] - } - } - return enumerableNames -} - -function ProxyEnumerate(proxy) { - var handler = %GetHandler(proxy) - if (IS_UNDEFINED(handler.enumerate)) { - return %Apply(DerivedEnumerateTrap, handler, [], 0, 0) - } else { - return ToNameArray(handler.enumerate(), "enumerate", false) - } -} - -//------------------------------------------------------------------- - -var Proxy = new GlobalObject(); -%AddNamedProperty(global, "Proxy", Proxy, DONT_ENUM); - -//Set up non-enumerable properties of the Proxy object. -utils.InstallFunctions(Proxy, DONT_ENUM, [ - "create", ProxyCreate, - "createFunction", ProxyCreateFunction -]) - -// ------------------------------------------------------------------- -// Exports - -utils.Export(function(to) { - to.ProxyDelegateCallAndConstruct = DelegateCallAndConstruct; - to.ProxyDerivedHasOwnTrap = DerivedHasOwnTrap; - to.ProxyDerivedKeysTrap = DerivedKeysTrap; -}); - -%InstallToContext([ - "derived_get_trap", DerivedGetTrap, - "derived_has_trap", DerivedHasTrap, - "derived_set_trap", DerivedSetTrap, - "proxy_enumerate", ProxyEnumerate, -]); - -}) |