Implement Object.getOwnPropertyNames constructor property [ES5 section 15.2.3...

src/v8natives.js

 // Copyright 2006-2008 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 258 matching lines @@
 function ObjectLookupSetter(name) {
   if (this == null) {
     throw new $TypeError('Object.prototype.__lookupSetter__: this is Null');
   }
   return %LookupAccessor(ToObject(this), ToString(name), SETTER);
 }
 
 
 function ObjectKeys(obj) {
   if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
-    throw MakeTypeError('object_keys_non_object', [obj]);
+    throw MakeTypeError("obj_ctor_property_non_object", ["keys"]);
   return %LocalKeys(obj);
 }
 
 
 // ES5 8.10.1.
 function IsAccessorDescriptor(desc) {
   if (IS_UNDEFINED(desc)) return false;
   return desc.hasGetter_ || desc.hasSetter_;
 }
 
@@ skipping 196 matching lines @@
   } else {
     if (IS_FUNCTION(desc.getGet())) %DefineAccessor(obj, p, GETTER, desc.getGet(), flag);
     if (IS_FUNCTION(desc.getSet())) %DefineAccessor(obj, p, SETTER, desc.getSet(), flag);
   }
   return true;
 }
 
 
 // ES5 section 15.2.3.2.
 function ObjectGetPrototypeOf(obj) {
- if (!IS_OBJECT(obj) && !IS_FUNCTION(obj)) {
-   throw MakeTypeError("object_get_prototype_non_object", [obj]);
- }
- return obj.__proto__;
+  if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
+    throw MakeTypeError("obj_ctor_property_non_object", ["getPrototypeOf"]);
+  return obj.__proto__;
 }
 
 
 // ES5 section 15.2.3.3 
 function ObjectGetOwnPropertyDescriptor(obj, p) {
-  if (!IS_OBJECT(obj) && !IS_FUNCTION(obj)) {
-    throw MakeTypeError("object_get_prototype_non_object", [obj]);
-  }
+  if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
+    throw MakeTypeError("obj_ctor_property_non_object", ["getOwnPropertyDescriptor"]);
   var desc = GetOwnProperty(obj, p);
   return FromPropertyDescriptor(desc);
 }
 
 
+// ES5 section 15.2.3.4.
+function ObjectGetOwnPropertyNames(obj) {
+  if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
+    throw MakeTypeError("obj_ctor_property_non_object", ["getOwnPropertyNames"]);
+
+  // Find all the indexed properties.
+
+  // Get the local element names.
+  var propertyNames = %GetLocalElementNames(obj);
+
+  // Get names for indexed interceptor properties.
+  if (%GetInterceptorInfo(obj) & 1) {
+    var indexedInterceptorNames =
+        %GetIndexedInterceptorElementNames(obj);
+    if (indexedInterceptorNames) {
+      propertyNames = propertyNames.concat(indexedInterceptorNames);
+    }
+  }
+
+  // Find all the named properties.
+
+  // Get the local property names.
+  propertyNames = propertyNames.concat(%GetLocalPropertyNames(obj));
+
+  // Get names for named interceptor properties if any.
+
+  if (%GetInterceptorInfo(obj) & 2) {
+    var namedInterceptorNames =
+        %GetNamedInterceptorPropertyNames(obj);
+    if (namedInterceptorNames) {
+      propertyNames = propertyNames.concat(namedInterceptorNames);
+    }
+  }
+
+  return propertyNames;
+}
+
+
 // ES5 section 15.2.3.5.
 function ObjectCreate(proto, properties) {
   if (!IS_OBJECT(proto) && !IS_NULL(proto)) {
     throw MakeTypeError("proto_object_or_null", [proto]);
   }
   var obj = new $Object();
   obj.__proto__ = proto;
   if (!IS_UNDEFINED(properties)) ObjectDefineProperties(obj, properties);
   return obj;
 }
@@ skipping 46 matching lines @@
     "propertyIsEnumerable", ObjectPropertyIsEnumerable,
     "__defineGetter__", ObjectDefineGetter,
     "__lookupGetter__", ObjectLookupGetter,
     "__defineSetter__", ObjectDefineSetter,
     "__lookupSetter__", ObjectLookupSetter
   ));
   InstallFunctions($Object, DONT_ENUM, $Array(
     "keys", ObjectKeys,
     "create", ObjectCreate,
     "getPrototypeOf", ObjectGetPrototypeOf,
-    "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor
+    "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor,
+    "getOwnPropertyNames", ObjectGetOwnPropertyNames
   ));
 }
 
 SetupObject();
 
 
 // ----------------------------------------------------------------------------
 // Boolean
 
 function BooleanToString() {
@@ skipping 247 matching lines @@
 
 // ----------------------------------------------------------------------------
 
 function SetupFunction() {
   InstallFunctions($Function.prototype, DONT_ENUM, $Array(
     "toString", FunctionToString
   ));
 }
 
 SetupFunction();