ES6: Add support for Map/Set forEach

src/runtime.cc

 // 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 1534 matching lines @@
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSSet, holder, 0);
   Handle<Object> key(args[1], isolate);
   Handle<OrderedHashSet> table(OrderedHashSet::cast(holder->table()));
   table = OrderedHashSet::Remove(table, key);
   holder->set_table(*table);
   return isolate->heap()->undefined_value();
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_SetClear) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSSet, holder, 0);
+  Handle<OrderedHashSet> table(OrderedHashSet::cast(holder->table()));
+  table = OrderedHashSet::Clear(table);
+  holder->set_table(*table);
+  return isolate->heap()->undefined_value();
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_SetGetSize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSSet, holder, 0);
   Handle<OrderedHashSet> table(OrderedHashSet::cast(holder->table()));
   return Smi::FromInt(table->NumberOfElements());
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_SetCreateIterator) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(JSSet, holder, 0);
+  CONVERT_SMI_ARG_CHECKED(kind, 1)
+  ASSERT(kind == JSSetIterator::kKindValues
+      || kind == JSSetIterator::kKindEntries);
+  Handle<OrderedHashSet> table(OrderedHashSet::cast(holder->table()));
+  Handle<JSSetIterator> iterator = JSSetIterator::Create(table, kind);
+  return *iterator;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_SetIteratorNext) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSSetIterator, holder, 0);
+  Handle<JSObject> result = JSSetIterator::Next(holder);
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_SetIteratorClose) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSSetIterator, holder, 0);
+  holder->Close();
+  return isolate->heap()->undefined_value();
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_MapInitialize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSMap, holder, 0);
   Handle<OrderedHashMap> table = isolate->factory()->NewOrderedHashMap();
   holder->set_table(*table);
   return *holder;
 }
 
 
@@ skipping 26 matching lines @@
   CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   Handle<OrderedHashMap> table(OrderedHashMap::cast(holder->table()));
   Handle<Object> lookup(table->Lookup(*key), isolate);
   Handle<OrderedHashMap> new_table =
       OrderedHashMap::Put(table, key, isolate->factory()->the_hole_value());
   holder->set_table(*new_table);
   return isolate->heap()->ToBoolean(!lookup->IsTheHole());
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_MapClear) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSMap, holder, 0);
+  Handle<OrderedHashMap> table(OrderedHashMap::cast(holder->table()));
+  table = OrderedHashMap::Clear(table);
+  holder->set_table(*table);
+  return isolate->heap()->undefined_value();
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_MapSet) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSMap, holder, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
   Handle<OrderedHashMap> table(OrderedHashMap::cast(holder->table()));
   Handle<OrderedHashMap> new_table = OrderedHashMap::Put(table, key, value);
   holder->set_table(*new_table);
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_MapGetSize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSMap, holder, 0);
   Handle<OrderedHashMap> table(OrderedHashMap::cast(holder->table()));
   return Smi::FromInt(table->NumberOfElements());
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_MapCreateIterator) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(JSMap, holder, 0);
+  CONVERT_SMI_ARG_CHECKED(kind, 1)
+  ASSERT(kind == JSMapIterator::kKindKeys
+      || kind == JSMapIterator::kKindValues
+      || kind == JSMapIterator::kKindEntries);
+  Handle<OrderedHashMap> table(OrderedHashMap::cast(holder->table()));
+  Handle<JSMapIterator> iterator = JSMapIterator::Create(table, kind);
+  return *iterator;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_MapIteratorNext) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSMapIterator, holder, 0);
+  Handle<JSObject> result = JSMapIterator::Next(holder);
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_MapIteratorClose) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSMapIterator, holder, 0);
+  holder->Close();
+  return isolate->heap()->undefined_value();
+}
+
+
 static JSWeakCollection* WeakCollectionInitialize(Isolate* isolate,
     Handle<JSWeakCollection> weak_collection) {
   ASSERT(weak_collection->map()->inobject_properties() == 0);
   Handle<ObjectHashTable> table = isolate->factory()->NewObjectHashTable(0);
   weak_collection->set_table(*table);
   weak_collection->set_next(Smi::FromInt(0));
   return *weak_collection;
 }
 
 
@@ skipping 13452 matching lines @@
   }
 }
 
 
 void Runtime::OutOfMemory() {
   Heap::FatalProcessOutOfMemory("CALL_AND_RETRY_LAST", true);
   UNREACHABLE();
 }
 
 } }  // namespace v8::internal