Implement set trap for proxies, and revamp class hierarchy in preparation

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 428 matching lines @@
   return !IsFailure() && ToObjectUnchecked()->IsTheHole();
 }
 
 
 Failure* Failure::cast(MaybeObject* obj) {
   ASSERT(HAS_FAILURE_TAG(obj));
   return reinterpret_cast<Failure*>(obj);
 }
 
 
+bool Object::IsJSReceiver() {
+  return IsHeapObject() &&
+      HeapObject::cast(this)->map()->instance_type() >= FIRST_JS_RECEIVER_TYPE;
+}
+
+
 bool Object::IsJSObject() {
-  return IsHeapObject()
-      && HeapObject::cast(this)->map()->instance_type() >= FIRST_JS_OBJECT_TYPE;
+  return IsJSReceiver() && !IsJSProxy();
 }
 
 
+bool Object::IsJSProxy() {
+  return Object::IsHeapObject() &&
+     (HeapObject::cast(this)->map()->instance_type() == JS_PROXY_TYPE ||
+      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::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 112 matching lines @@
       && (HeapObject::cast(this)->map()->instance_type() ==
           JS_MESSAGE_OBJECT_TYPE);
 }
 
 
 bool Object::IsStringWrapper() {
   return IsJSValue() && JSValue::cast(this)->value()->IsString();
 }
 
 
-bool Object::IsJSProxy() {
-  return Object::IsHeapObject()
-      && HeapObject::cast(this)->map()->instance_type() == JS_PROXY_TYPE;
-}
-
-
 bool Object::IsForeign() {
   return Object::IsHeapObject()
       && HeapObject::cast(this)->map()->instance_type() == FOREIGN_TYPE;
 }
 
 
 bool Object::IsBoolean() {
   return IsOddball() &&
       ((Oddball::cast(this)->kind() & Oddball::kNotBooleanMask) == 0);
 }
@@ skipping 1278 matching lines @@
 CAST_ACCESSOR(CodeCacheHashTable)
 CAST_ACCESSOR(MapCache)
 CAST_ACCESSOR(String)
 CAST_ACCESSOR(SeqString)
 CAST_ACCESSOR(SeqAsciiString)
 CAST_ACCESSOR(SeqTwoByteString)
 CAST_ACCESSOR(ConsString)
 CAST_ACCESSOR(ExternalString)
 CAST_ACCESSOR(ExternalAsciiString)
 CAST_ACCESSOR(ExternalTwoByteString)
+CAST_ACCESSOR(JSReceiver)
 CAST_ACCESSOR(JSObject)
 CAST_ACCESSOR(Smi)
 CAST_ACCESSOR(HeapObject)
 CAST_ACCESSOR(HeapNumber)
 CAST_ACCESSOR(Oddball)
 CAST_ACCESSOR(JSGlobalPropertyCell)
 CAST_ACCESSOR(SharedFunctionInfo)
 CAST_ACCESSOR(Map)
 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(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 1991 matching lines @@
 
 bool String::AsArrayIndex(uint32_t* index) {
   uint32_t field = hash_field();
   if (IsHashFieldComputed(field) && (field & kIsNotArrayIndexMask)) {
     return false;
   }
   return SlowAsArrayIndex(index);
 }
 
 
-Object* JSObject::GetPrototype() {
-  return JSObject::cast(this)->map()->prototype();
+Object* JSReceiver::GetPrototype() {
+  return HeapObject::cast(this)->map()->prototype();
 }
 
 
-PropertyAttributes JSObject::GetPropertyAttribute(String* key) {
+PropertyAttributes JSReceiver::GetPropertyAttribute(String* key) {
   return GetPropertyAttributeWithReceiver(this, key);
 }
 
 // TODO(504): this may be useful in other places too where JSGlobalProxy
 // is used.
 Object* JSObject::BypassGlobalProxy() {
   if (IsJSGlobalProxy()) {
     Object* proto = GetPrototype();
     if (proto->IsNull()) return GetHeap()->undefined_value();
     ASSERT(proto->IsJSGlobalObject());
@@ skipping 293 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_