Implement identity hashes for proxies.

src/objects-inl.h

 // Copyright 2011 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 3822 matching lines @@
 
 void JSBuiltinsObject::set_javascript_builtin_code(Builtins::JavaScript id,
                                                    Code* value) {
   ASSERT(id < kJSBuiltinsCount);  // id is unsigned.
   WRITE_FIELD(this, OffsetOfCodeWithId(id), value);
   ASSERT(!HEAP->InNewSpace(value));
 }
 
 
 ACCESSORS(JSProxy, handler, Object, kHandlerOffset)
+ACCESSORS(JSProxy, hash, Object, kHashOffset)
 ACCESSORS(JSFunctionProxy, call_trap, Object, kCallTrapOffset)
 ACCESSORS(JSFunctionProxy, construct_trap, Object, kConstructTrapOffset)
 
 
 void JSProxy::InitializeBody(int object_size, Object* value) {
   ASSERT(!value->IsHeapObject() || !GetHeap()->InNewSpace(value));
   for (int offset = kHeaderSize; offset < object_size; offset += kPointerSize) {
     WRITE_FIELD(this, offset, value);
   }
 }
@@ skipping 433 matching lines @@
   if (IsJSGlobalProxy()) {
     Object* proto = GetPrototype();
     if (proto->IsNull()) return GetHeap()->undefined_value();
     ASSERT(proto->IsJSGlobalObject());
     return proto;
   }
   return this;
 }
 
 
+MaybeObject* JSReceiver::GetIdentityHash(CreationFlag flag) {
+  return IsJSProxy()
+      ? JSProxy::cast(this)->GetIdentityHash(flag)
+      : JSObject::cast(this)->GetIdentityHash(flag);
+}
+
+
 bool JSObject::HasHiddenPropertiesObject() {
   ASSERT(!IsJSGlobalProxy());
   return GetPropertyAttributePostInterceptor(this,
                                              GetHeap()->hidden_symbol(),
                                              false) != ABSENT;
 }
 
 
 Object* JSObject::GetHiddenPropertiesObject() {
   ASSERT(!IsJSGlobalProxy());
@@ skipping 134 matching lines @@
 uint32_t StringDictionaryShape::HashForObject(String* key, Object* other) {
   return String::cast(other)->Hash();
 }
 
 
 MaybeObject* StringDictionaryShape::AsObject(String* key) {
   return key;
 }
 
 
-bool ObjectHashTableShape::IsMatch(JSObject* key, Object* other) {
-  return key == JSObject::cast(other);
+bool ObjectHashTableShape::IsMatch(JSReceiver* key, Object* other) {
+  return key == JSReceiver::cast(other);
 }
 
 
-uint32_t ObjectHashTableShape::Hash(JSObject* key) {
-  MaybeObject* maybe_hash = key->GetIdentityHash(JSObject::OMIT_CREATION);
+uint32_t ObjectHashTableShape::Hash(JSReceiver* key) {
+  MaybeObject* maybe_hash = key->GetIdentityHash(OMIT_CREATION);
   ASSERT(!maybe_hash->IsFailure());
   return Smi::cast(maybe_hash->ToObjectUnchecked())->value();
 }
 
 
-uint32_t ObjectHashTableShape::HashForObject(JSObject* key, Object* other) {
-  MaybeObject* maybe_hash = JSObject::cast(other)->GetIdentityHash(
-      JSObject::OMIT_CREATION);
+uint32_t ObjectHashTableShape::HashForObject(JSReceiver* key, Object* other) {
+  MaybeObject* maybe_hash =
+      JSReceiver::cast(other)->GetIdentityHash(OMIT_CREATION);
   ASSERT(!maybe_hash->IsFailure());
   return Smi::cast(maybe_hash->ToObjectUnchecked())->value();
 }
 
 
-MaybeObject* ObjectHashTableShape::AsObject(JSObject* key) {
+MaybeObject* ObjectHashTableShape::AsObject(JSReceiver* key) {
   return key;
 }
 
 
 void ObjectHashTable::RemoveEntry(int entry) {
   RemoveEntry(entry, GetHeap());
 }
 
 
 void Map::ClearCodeCache(Heap* heap) {
@@ skipping 140 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_