ES6: Add support for Map/Set forEach

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 92dc78267f1eacb832b96391109f4faa54ecb8e9..0dde0d3c980c0cca88995b71cf54c7afb6543f75 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -1552,6 +1552,17 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetDelete) {
 }
 
 
+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);
@@ -1561,6 +1572,37 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetGetSize) {
 }
 
 
+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);
@@ -1607,6 +1649,17 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_MapDelete) {
 }
 
 
+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);
@@ -1629,6 +1682,38 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_MapGetSize) {
 }
 
 
+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);