Preliminary Harmony weak maps API implementation.

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 462 matching lines @@
       HeapObject::cast(this)->map()->instance_type() == JS_FUNCTION_PROXY_TYPE);
 }
 
 
 bool Object::IsJSFunctionProxy() {
   return Object::IsHeapObject() &&
       HeapObject::cast(this)->map()->instance_type() == JS_FUNCTION_PROXY_TYPE;
 }
 
 
+bool Object::IsJSWeakMap() {
+  return Object::IsJSObject() &&
+      HeapObject::cast(this)->map()->instance_type() == JS_WEAK_MAP_TYPE;
+}
+
+
 bool Object::IsJSContextExtensionObject() {
   return IsHeapObject()
       && (HeapObject::cast(this)->map()->instance_type() ==
           JS_CONTEXT_EXTENSION_OBJECT_TYPE);
 }
 
 
 bool Object::IsMap() {
   return Object::IsHeapObject()
       && HeapObject::cast(this)->map()->instance_type() == MAP_TYPE;
@@ skipping 914 matching lines @@
     case JS_GLOBAL_OBJECT_TYPE:
       return JSGlobalObject::kSize;
     case JS_BUILTINS_OBJECT_TYPE:
       return JSBuiltinsObject::kSize;
     case JS_FUNCTION_TYPE:
       return JSFunction::kSize;
     case JS_VALUE_TYPE:
       return JSValue::kSize;
     case JS_ARRAY_TYPE:
       return JSValue::kSize;
+    case JS_WEAK_MAP_TYPE:
+      return JSWeakMap::kSize;
     case JS_REGEXP_TYPE:
       return JSValue::kSize;
     case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
       return JSObject::kHeaderSize;
     case JS_MESSAGE_OBJECT_TYPE:
       return JSMessageObject::kSize;
     default:
       UNREACHABLE();
       return 0;
   }
@@ skipping 630 matching lines @@
 CAST_ACCESSOR(JSFunction)
 CAST_ACCESSOR(GlobalObject)
 CAST_ACCESSOR(JSGlobalProxy)
 CAST_ACCESSOR(JSGlobalObject)
 CAST_ACCESSOR(JSBuiltinsObject)
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(JSArray)
 CAST_ACCESSOR(JSRegExp)
 CAST_ACCESSOR(JSProxy)
 CAST_ACCESSOR(JSFunctionProxy)
+CAST_ACCESSOR(JSWeakMap)
 CAST_ACCESSOR(Foreign)
 CAST_ACCESSOR(ByteArray)
 CAST_ACCESSOR(ExternalArray)
 CAST_ACCESSOR(ExternalByteArray)
 CAST_ACCESSOR(ExternalUnsignedByteArray)
 CAST_ACCESSOR(ExternalShortArray)
 CAST_ACCESSOR(ExternalUnsignedShortArray)
 CAST_ACCESSOR(ExternalIntArray)
 CAST_ACCESSOR(ExternalUnsignedIntArray)
 CAST_ACCESSOR(ExternalFloatArray)
@@ skipping 1710 matching lines @@
   ASSERT(id < kJSBuiltinsCount);  // id is unsigned.
   WRITE_FIELD(this, OffsetOfCodeWithId(id), value);
   ASSERT(!HEAP->InNewSpace(value));
 }
 
 
 ACCESSORS(JSProxy, handler, Object, kHandlerOffset)
 ACCESSORS(JSProxy, padding, Object, kPaddingOffset)
 
 
+ACCESSORS(JSWeakMap, table, ObjectHashTable, kTableOffset)
+
+
 Address Foreign::address() {
   return AddressFrom<Address>(READ_INTPTR_FIELD(this, kAddressOffset));
 }
 
 
 void Foreign::set_address(Address value) {
   WRITE_INTPTR_FIELD(this, kAddressOffset, OffsetFrom(value));
 }
 
 
@@ skipping 734 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_