ES6: Add support for Map and Set Iterator

src/bootstrapper.cc

 // Copyright 2014 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.
 
 #include "bootstrapper.h"
 
 #include "accessors.h"
 #include "isolate-inl.h"
 #include "natives.h"
 #include "snapshot.h"
@@ skipping 1293 matching lines @@
       InstallFunction(global, "Map", JS_MAP_TYPE, JSMap::kSize,
                       isolate()->initial_object_prototype(),
                       Builtins::kIllegal, true, true);
     }
     {  // -- S e t
       InstallFunction(global, "Set", JS_SET_TYPE, JSSet::kSize,
                       isolate()->initial_object_prototype(),
                       Builtins::kIllegal, true, true);
     }
     {   // -- S e t I t e r a t o r
-      Handle<Map> map = isolate()->factory()->NewMap(
-          JS_SET_ITERATOR_TYPE, JSSetIterator::kSize);
-      native_context()->set_set_iterator_map(*map);
+      Handle<JSObject> builtins(native_context()->builtins());
+      Handle<JSObject> set_iterator_prototype =
+          factory()->NewJSObject(isolate()->object_function(), TENURED);
+      Handle<JSFunction> set_iterator_function =
+          InstallFunction(builtins, "SetIterator", JS_SET_ITERATOR_TYPE,
+                          JSSetIterator::kSize,
+                          set_iterator_prototype,
+                          Builtins::kIllegal, true, false);
+
+      Map* map = set_iterator_function->initial_map();
+      native_context()->set_set_iterator_map(map);
     }
     {   // -- M a p I t e r a t o r
-      Handle<Map> map = isolate()->factory()->NewMap(
-          JS_MAP_ITERATOR_TYPE, JSMapIterator::kSize);
-      native_context()->set_map_iterator_map(*map);
+      Handle<JSObject> builtins(native_context()->builtins());
+      Handle<JSObject> map_iterator_prototype =
+          factory()->NewJSObject(isolate()->object_function(), TENURED);
+
+      Handle<JSFunction> map_iterator_function =
+          InstallFunction(builtins, "MapIterator", JS_MAP_ITERATOR_TYPE,
+                          JSMapIterator::kSize,
+                          map_iterator_prototype,
+                          Builtins::kIllegal, true, false);
+
+      Map* map = map_iterator_function->initial_map();
+      native_context()->set_map_iterator_map(map);
     }
   }
 
   if (FLAG_harmony_weak_collections) {
     {  // -- W e a k M a p
       InstallFunction(global, "WeakMap", JS_WEAK_MAP_TYPE, JSWeakMap::kSize,
                       isolate()->initial_object_prototype(),
                       Builtins::kIllegal, true, true);
     }
     {  // -- W e a k S e t
@@ skipping 652 matching lines @@
     INSTALL_EXPERIMENTAL_NATIVE(i, symbols, "symbol.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, proxies, "proxy.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, collections, "collection.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, weak_collections, "weak_collection.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, promises, "promise.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, generators, "generator.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, iteration, "array-iterator.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, strings, "harmony-string.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, arrays, "harmony-array.js")
     INSTALL_EXPERIMENTAL_NATIVE(i, maths, "harmony-math.js")
+    INSTALL_EXPERIMENTAL_NATIVE(i, collection_iterators,
+        "collection-iterator.js")
   }
 
   InstallExperimentalNativeFunctions();
   InstallExperimentalBuiltinFunctionIds();
   return true;
 }
 
 
 static Handle<JSObject> ResolveBuiltinIdHolder(
     Handle<Context> native_context,
@@ skipping 679 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal