Move runtime helper for JSWeakCollection onto objects.

src/objects.cc

 // Copyright 2013 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 "src/objects.h"
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/accessors.h"
@@ skipping 15135 matching lines @@
 }
 
 
 void JSMap::Clear(Handle<JSMap> map) {
   Handle<OrderedHashMap> table(OrderedHashMap::cast(map->table()));
   table = OrderedHashMap::Clear(table);
   map->set_table(*table);
 }
 
 
+void JSWeakCollection::Initialize(Handle<JSWeakCollection> weak_collection,
+                                  Isolate* isolate) {
+  DCHECK_EQ(0, weak_collection->map()->GetInObjectProperties());
+  Handle<ObjectHashTable> table = ObjectHashTable::New(isolate, 0);
+  weak_collection->set_table(*table);
+}
+
+
+void JSWeakCollection::Set(Handle<JSWeakCollection> weak_collection,
+                           Handle<Object> key, Handle<Object> value,
+                           int32_t hash) {
+  DCHECK(key->IsJSReceiver() || key->IsSymbol());
+  Handle<ObjectHashTable> table(
+      ObjectHashTable::cast(weak_collection->table()));
+  DCHECK(table->IsKey(*key));
+  Handle<ObjectHashTable> new_table =
+      ObjectHashTable::Put(table, key, value, hash);
+  weak_collection->set_table(*new_table);
+  if (*table != *new_table) {
+    // Zap the old table since we didn't record slots for its elements.
+    table->FillWithHoles(0, table->length());
+  }
+}
+
+
+bool JSWeakCollection::Delete(Handle<JSWeakCollection> weak_collection,
+                              Handle<Object> key, int32_t hash) {
+  DCHECK(key->IsJSReceiver() || key->IsSymbol());
+  Handle<ObjectHashTable> table(
+      ObjectHashTable::cast(weak_collection->table()));
+  DCHECK(table->IsKey(*key));
+  bool was_present = false;
+  Handle<ObjectHashTable> new_table =
+      ObjectHashTable::Remove(table, key, &was_present, hash);
+  weak_collection->set_table(*new_table);
+  if (*table != *new_table) {
+    // Zap the old table since we didn't record slots for its elements.
+    table->FillWithHoles(0, table->length());
+  }
+  return was_present;
+}
+
+
 // Check if there is a break point at this code position.
 bool DebugInfo::HasBreakPoint(int code_position) {
   // Get the break point info object for this code position.
   Object* break_point_info = GetBreakPointInfo(code_position);
 
   // If there is no break point info object or no break points in the break
   // point info object there is no break point at this code position.
   if (break_point_info->IsUndefined()) return false;
   return BreakPointInfo::cast(break_point_info)->GetBreakPointCount() > 0;
 }
@@ skipping 562 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8