Ship promises and weak collections

src/promise.js

 // Copyright 2012 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
@@ skipping 16 matching lines @@
 
 
 "use strict";
 
 // This file relies on the fact that the following declaration has been made
 // in runtime.js:
 // var $Object = global.Object
 // var $WeakMap = global.WeakMap
 
 
-var $Promise = Promise;
+var $Promise = function Promise(resolver) {
+  if (resolver === promiseRaw) return;
+  if (!%_IsConstructCall()) throw MakeTypeError('not_a_promise', [this]);
+  if (typeof resolver !== 'function')
+    throw MakeTypeError('resolver_not_a_function', [resolver]);
+  var promise = PromiseInit(this);
+  try {
+    resolver(function(x) { PromiseResolve(promise, x) },
+             function(r) { PromiseReject(promise, r) });
+  } catch (e) {
+    PromiseReject(promise, e);
+  }
+}
 
 
 //-------------------------------------------------------------------
 
 // Core functionality.
 
 // Status values: 0 = pending, +1 = resolved, -1 = rejected
 var promiseStatus = NEW_PRIVATE("Promise#status");
 var promiseValue = NEW_PRIVATE("Promise#value");
 var promiseOnResolve = NEW_PRIVATE("Promise#onResolve");
 var promiseOnReject = NEW_PRIVATE("Promise#onReject");
 var promiseRaw = NEW_PRIVATE("Promise#raw");
 
 function IsPromise(x) {
   return IS_SPEC_OBJECT(x) && %HasLocalProperty(x, promiseStatus);
 }
 
-function Promise(resolver) {
-  if (resolver === promiseRaw) return;
-  if (!%_IsConstructCall()) throw MakeTypeError('not_a_promise', [this]);
-  if (typeof resolver !== 'function')
-    throw MakeTypeError('resolver_not_a_function', [resolver]);
-  var promise = PromiseInit(this);
-  try {
-    resolver(function(x) { PromiseResolve(promise, x) },
-             function(r) { PromiseReject(promise, r) });
-  } catch (e) {
-    PromiseReject(promise, e);
-  }
-}
-
 function PromiseSet(promise, status, value, onResolve, onReject) {
   SET_PRIVATE(promise, promiseStatus, status);
   SET_PRIVATE(promise, promiseValue, value);
   SET_PRIVATE(promise, promiseOnResolve, onResolve);
   SET_PRIVATE(promise, promiseOnReject, onReject);
   return promise;
 }
 
 function PromiseInit(promise) {
   return PromiseSet(promise, 0, UNDEFINED, new InternalArray, new InternalArray)
@@ skipping 13 matching lines @@
 function PromiseReject(promise, r) {
   PromiseDone(promise, -1, r, promiseOnReject)
 }
 
 
 // For API.
 
 function PromiseNopResolver() {}
 
 function PromiseCreate() {
-  return new Promise(PromiseNopResolver)
+  return new $Promise(PromiseNopResolver)
 }
 
 
 // Convenience.
 
 function PromiseDeferred() {
   if (this === $Promise) {
     // Optimized case, avoid extra closure.
-    var promise = PromiseInit(new Promise(promiseRaw));
+    var promise = PromiseInit(new $Promise(promiseRaw));
     return {
       promise: promise,
       resolve: function(x) { PromiseResolve(promise, x) },
       reject: function(r) { PromiseReject(promise, r) }
     };
   } else {
     var result = {};
     result.promise = new this(function(resolve, reject) {
       result.resolve = resolve;
       result.reject = reject;
     })
     return result;
   }
 }
 
 function PromiseResolved(x) {
   if (this === $Promise) {
     // Optimized case, avoid extra closure.
-    return PromiseSet(new Promise(promiseRaw), +1, x);
+    return PromiseSet(new $Promise(promiseRaw), +1, x);
   } else {
     return new this(function(resolve, reject) { resolve(x) });
   }
 }
 
 function PromiseRejected(r) {
   if (this === $Promise) {
     // Optimized case, avoid extra closure.
-    return PromiseSet(new Promise(promiseRaw), -1, r);
+    return PromiseSet(new $Promise(promiseRaw), -1, r);
   } else {
     return new this(function(resolve, reject) { reject(r) });
   }
 }
 
 
 // Simple chaining.
 
 function PromiseIdResolveHandler(x) { return x }
 function PromiseIdRejectHandler(r) { throw r }
@@ skipping 149 matching lines @@
     }
   } catch (e) {
     deferred.reject(e)
   }
   return deferred.promise;
 }
 
 //-------------------------------------------------------------------
 
 function SetUpPromise() {
-  %CheckIsBootstrapping()
-  var global_receiver = %GlobalReceiver(global);
-  global_receiver.Promise = $Promise;
+  %CheckIsBootstrapping();
+  %SetProperty(global, "Promise", $Promise, NONE);
   InstallFunctions($Promise, DONT_ENUM, [
     "defer", PromiseDeferred,
     "accept", PromiseResolved,
     "reject", PromiseRejected,
     "all", PromiseAll,
     "race", PromiseOne,
     "resolve", PromiseCast
   ]);
   InstallFunctions($Promise.prototype, DONT_ENUM, [
     "chain", PromiseChain,
     "then", PromiseThen,
     "catch", PromiseCatch
   ]);
 }
 
 SetUpPromise();