Implement inline %_IsJSProxy() for full codegen and Hydrogen

src/v8natives.js

 // Copyright 2012 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.
 
 // This file relies on the fact that the following declarations have been made
 // in runtime.js:
 // var $Object = global.Object;
 // var $Boolean = global.Boolean;
 // var $Number = global.Number;
 // var $Function = global.Function;
@@ skipping 220 matching lines @@
 
 
 // ECMA-262 - 15.2.4.4
 function ObjectValueOf() {
   return ToObject(this);
 }
 
 
 // ECMA-262 - 15.2.4.5
 function ObjectHasOwnProperty(V) {
-  if (%IsJSProxy(this)) {
+  if (%_IsJSProxy(this)) {
     // TODO(rossberg): adjust once there is a story for symbols vs proxies.
     if (IS_SYMBOL(V)) return false;
 
     var handler = %GetHandler(this);
     return CallTrap1(handler, "hasOwn", DerivedHasOwnTrap, ToName(V));
   }
   return %HasOwnProperty(TO_OBJECT_INLINE(this), ToName(V));
 }
 
 
 // ECMA-262 - 15.2.4.6
 function ObjectIsPrototypeOf(V) {
   CHECK_OBJECT_COERCIBLE(this, "Object.prototype.isPrototypeOf");
   if (!IS_SPEC_OBJECT(V)) return false;
   return %IsInPrototypeChain(this, V);
 }
 
 
 // ECMA-262 - 15.2.4.6
 function ObjectPropertyIsEnumerable(V) {
   var P = ToName(V);
-  if (%IsJSProxy(this)) {
+  if (%_IsJSProxy(this)) {
     // TODO(rossberg): adjust once there is a story for symbols vs proxies.
     if (IS_SYMBOL(V)) return false;
 
     var desc = GetOwnPropertyJS(this, P);
     return IS_UNDEFINED(desc) ? false : desc.isEnumerable();
   }
   return %IsPropertyEnumerable(ToObject(this), P);
 }
 
 
@@ skipping 45 matching lines @@
   var receiver = this;
   if (receiver == null && !IS_UNDETECTABLE(receiver)) {
     receiver = %GlobalProxy(global);
   }
   return %LookupAccessor(ToObject(receiver), ToName(name), SETTER);
 }
 
 
 function ObjectKeys(obj) {
   obj = ToObject(obj);
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     var handler = %GetHandler(obj);
     var names = CallTrap0(handler, "keys", DerivedKeysTrap);
     return ToNameArray(names, "keys", false);
   }
   return %OwnKeys(obj);
 }
 
 
 // ES5 8.10.1.
 function IsAccessorDescriptor(desc) {
@@ skipping 276 matching lines @@
 
 
 function CallTrap2(handler, name, defaultTrap, x, y) {
   return %_CallFunction(handler, x, y, GetTrap(handler, name, defaultTrap));
 }
 
 
 // ES5 section 8.12.1.
 function GetOwnPropertyJS(obj, v) {
   var p = ToName(v);
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     // TODO(rossberg): adjust once there is a story for symbols vs proxies.
     if (IS_SYMBOL(v)) return UNDEFINED;
 
     var handler = %GetHandler(obj);
     var descriptor = CallTrap1(
                          handler, "getOwnPropertyDescriptor", UNDEFINED, p);
     if (IS_UNDEFINED(descriptor)) return descriptor;
     var desc = ToCompletePropertyDescriptor(descriptor);
     if (!desc.isConfigurable()) {
       throw MakeTypeError("proxy_prop_not_configurable",
@@ skipping 319 matching lines @@
     }
   }
 
   // Step 5 - Fallback to default implementation.
   return DefineObjectProperty(obj, p, desc, should_throw);
 }
 
 
 // ES5 section 8.12.9, ES5 section 15.4.5.1 and Harmony proxies.
 function DefineOwnProperty(obj, p, desc, should_throw) {
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     // TODO(rossberg): adjust once there is a story for symbols vs proxies.
     if (IS_SYMBOL(p)) return false;
 
     var attributes = FromGenericPropertyDescriptor(desc);
     return DefineProxyProperty(obj, p, attributes, should_throw);
   } else if (IS_ARRAY(obj)) {
     return DefineArrayProperty(obj, p, desc, should_throw);
   } else {
     return DefineObjectProperty(obj, p, desc, should_throw);
   }
@@ skipping 127 matching lines @@
   return propertyNames;
 }
 
 
 // ES5 section 15.2.3.4.
 function ObjectGetOwnPropertyNames(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.getOwnPropertyNames"]);
   }
   // Special handling for proxies.
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     var handler = %GetHandler(obj);
     var names = CallTrap0(handler, "getOwnPropertyNames", UNDEFINED);
     return ToNameArray(names, "getOwnPropertyNames", false);
   }
 
   return ObjectGetOwnPropertyKeys(obj, false);
 }
 
 
 // ES5 section 15.2.3.5.
 function ObjectCreate(proto, properties) {
   if (!IS_SPEC_OBJECT(proto) && proto !== null) {
     throw MakeTypeError("proto_object_or_null", [proto]);
   }
   var obj = {};
   %InternalSetPrototype(obj, proto);
   if (!IS_UNDEFINED(properties)) ObjectDefineProperties(obj, properties);
   return obj;
 }
 
 
 // ES5 section 15.2.3.6.
 function ObjectDefineProperty(obj, p, attributes) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.defineProperty"]);
   }
   var name = ToName(p);
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     // Clone the attributes object for protection.
     // TODO(rossberg): not spec'ed yet, so not sure if this should involve
     // non-own properties as it does (or non-enumerable ones, as it doesn't?).
     var attributesClone = { __proto__: null };
     for (var a in attributes) {
       attributesClone[a] = attributes[a];
     }
     DefineProxyProperty(obj, name, attributesClone, true);
     // The following would implement the spec as in the current proposal,
     // but after recent comments on es-discuss, is most likely obsolete.
@@ skipping 88 matching lines @@
   }
   ObjectDefineProperties(obj, props);
 }
 
 
 // ES5 section 15.2.3.8.
 function ObjectSeal(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.seal"]);
   }
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     ProxyFix(obj);
   }
   var names = ObjectGetOwnPropertyNames(obj);
   for (var i = 0; i < names.length; i++) {
     var name = names[i];
     var desc = GetOwnPropertyJS(obj, name);
     if (desc.isConfigurable()) {
       desc.setConfigurable(false);
       DefineOwnProperty(obj, name, desc, true);
     }
   }
   %PreventExtensions(obj);
   return obj;
 }
 
 
 // ES5 section 15.2.3.9.
 function ObjectFreezeJS(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.freeze"]);
   }
-  var isProxy = %IsJSProxy(obj);
+  var isProxy = %_IsJSProxy(obj);
   if (isProxy || %HasSloppyArgumentsElements(obj) || %IsObserved(obj)) {
     if (isProxy) {
       ProxyFix(obj);
     }
     var names = ObjectGetOwnPropertyNames(obj);
     for (var i = 0; i < names.length; i++) {
       var name = names[i];
       var desc = GetOwnPropertyJS(obj, name);
       if (desc.isWritable() || desc.isConfigurable()) {
         if (IsDataDescriptor(desc)) desc.setWritable(false);
         desc.setConfigurable(false);
         DefineOwnProperty(obj, name, desc, true);
       }
     }
     %PreventExtensions(obj);
   } else {
     // TODO(adamk): Is it worth going to this fast path if the
     // object's properties are already in dictionary mode?
     %ObjectFreeze(obj);
   }
   return obj;
 }
 
 
 // ES5 section 15.2.3.10
 function ObjectPreventExtension(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]);
   }
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     ProxyFix(obj);
   }
   %PreventExtensions(obj);
   return obj;
 }
 
 
 // ES5 section 15.2.3.11
 function ObjectIsSealed(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.isSealed"]);
   }
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     return false;
   }
   if (%IsExtensible(obj)) {
     return false;
   }
   var names = ObjectGetOwnPropertyNames(obj);
   for (var i = 0; i < names.length; i++) {
     var name = names[i];
     var desc = GetOwnPropertyJS(obj, name);
     if (desc.isConfigurable()) {
       return false;
     }
   }
   return true;
 }
 
 
 // ES5 section 15.2.3.12
 function ObjectIsFrozen(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.isFrozen"]);
   }
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     return false;
   }
   if (%IsExtensible(obj)) {
     return false;
   }
   var names = ObjectGetOwnPropertyNames(obj);
   for (var i = 0; i < names.length; i++) {
     var name = names[i];
     var desc = GetOwnPropertyJS(obj, name);
     if (IsDataDescriptor(desc) && desc.isWritable()) return false;
     if (desc.isConfigurable()) return false;
   }
   return true;
 }
 
 
 // ES5 section 15.2.3.13
 function ObjectIsExtensible(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.isExtensible"]);
   }
-  if (%IsJSProxy(obj)) {
+  if (%_IsJSProxy(obj)) {
     return true;
   }
   return %IsExtensible(obj);
 }
 
 
 // Harmony egal.
 function ObjectIs(obj1, obj2) {
   if (obj1 === obj2) {
     return (obj1 !== 0) || (1 / obj1 === 1 / obj2);
@@ skipping 535 matching lines @@
   }
   if (!IS_SPEC_FUNCTION(method)) {
     throw MakeTypeError('not_iterable', [obj]);
   }
   var iterator = %_CallFunction(obj, method);
   if (!IS_SPEC_OBJECT(iterator)) {
     throw MakeTypeError('not_an_iterator', [iterator]);
   }
   return iterator;
 }