The Tor Browser: js/src/builtin/Iterator.js@6474c204b198 (annotated)

js/src/builtin/Iterator.js@6474c204b198 (annotated)

js/src/builtin/Iterator.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 function IteratorIdentity() {
     return this;
 }
 var LegacyIteratorWrapperMap = new std_WeakMap();
 function LegacyIteratorNext(arg) {
     var iter = callFunction(std_WeakMap_get, LegacyIteratorWrapperMap, this);
     try {
         return { value: iter.next(arg), done: false };
     } catch (e) {
         if (e instanceof std_StopIteration)
             return { value: undefined, done: true };
         throw e;
     }
 }
 function LegacyIteratorThrow(exn) {
     var iter = callFunction(std_WeakMap_get, LegacyIteratorWrapperMap, this);
     try {
         return { value: iter.throw(exn), done: false };
     } catch (e) {
         if (e instanceof std_StopIteration)
             return { value: undefined, done: true };
         throw e;
     }
 }
 function LegacyIterator(iter) {
     callFunction(std_WeakMap_set, LegacyIteratorWrapperMap, this, iter);
 }
 function LegacyGeneratorIterator(iter) {
     callFunction(std_WeakMap_set, LegacyIteratorWrapperMap, this, iter);
 }
 var LegacyIteratorsInitialized = std_Object_create(null);
 function InitLegacyIterators() {
     var props = std_Object_create(null);
     props.next = std_Object_create(null);
     props.next.value = LegacyIteratorNext;
     props.next.enumerable = false;
     props.next.configurable = true;
     props.next.writable = true;
     props[std_iterator] = std_Object_create(null);
     props[std_iterator].value = IteratorIdentity;
     props[std_iterator].enumerable = false;
     props[std_iterator].configurable = true;
     props[std_iterator].writable = true;
     var LegacyIteratorProto = std_Object_create(GetIteratorPrototype(), props);
     MakeConstructible(LegacyIterator, LegacyIteratorProto);
     props.throw = std_Object_create(null);
     props.throw.value = LegacyIteratorThrow;
     props.throw.enumerable = false;
     props.throw.configurable = true;
     props.throw.writable = true;
     var LegacyGeneratorIteratorProto = std_Object_create(GetIteratorPrototype(), props);
     MakeConstructible(LegacyGeneratorIterator, LegacyGeneratorIteratorProto);
     LegacyIteratorsInitialized.initialized = true;
 }
 function NewLegacyIterator(iter, wrapper) {
     if (!LegacyIteratorsInitialized.initialized)
         InitLegacyIterators();
     return new wrapper(iter);
 }
 function LegacyIteratorShim() {
     return NewLegacyIterator(ToObject(this), LegacyIterator);
 }
 function LegacyGeneratorIteratorShim() {
     return NewLegacyIterator(ToObject(this), LegacyGeneratorIterator);
 }