JavaScriptCore-1218.35.tar.gz

[apple/javascriptcore.git] / runtime / ObjectConstructor.cpp

diff --git a/runtime/ObjectConstructor.cpp b/runtime/ObjectConstructor.cpp
index c325fa070b1f7bb9460c218b20b62e78bbd4b8a5..d72cbe84e8772e0b92619730846a4b7ae190c017 100644 (file)
--- a/runtime/ObjectConstructor.cpp
+++ b/runtime/ObjectConstructor.cpp
@@ -21,6 +21,8 @@
 #include "config.h"
 #include "ObjectConstructor.h"
 
 #include "config.h"
 #include "ObjectConstructor.h"
 

+#include "ButterflyInlines.h"
+#include "CopiedSpaceInlines.h"

 #include "Error.h"
 #include "ExceptionHelpers.h"
 #include "JSFunction.h"
 #include "Error.h"
 #include "ExceptionHelpers.h"
 #include "JSFunction.h"


@@ -28,13 +30,12 @@
 #include "JSGlobalObject.h"
 #include "Lookup.h"
 #include "ObjectPrototype.h"
 #include "JSGlobalObject.h"
 #include "Lookup.h"
 #include "ObjectPrototype.h"

+#include "Operations.h"

 #include "PropertyDescriptor.h"
 #include "PropertyNameArray.h"
 
 namespace JSC {
 
 #include "PropertyDescriptor.h"
 #include "PropertyNameArray.h"
 
 namespace JSC {
 

-ASSERT_CLASS_FITS_IN_CELL(ObjectConstructor);
-

 static EncodedJSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState*);
 static EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState*);
 static EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState*);
 static EncodedJSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState*);
 static EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState*);
 static EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState*);


@@ -55,7 +56,9 @@ static EncodedJSValue JSC_HOST_CALL objectConstructorIsExtensible(ExecState*);
 
 namespace JSC {
 
 
 namespace JSC {
 

-const ClassInfo ObjectConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::objectConstructorTable };
+ASSERT_HAS_TRIVIAL_DESTRUCTOR(ObjectConstructor);
+
+const ClassInfo ObjectConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::objectConstructorTable, CREATE_METHOD_TABLE(ObjectConstructor) };

 
 /* Source for ObjectConstructor.lut.h
 @begin objectConstructorTable
 
 /* Source for ObjectConstructor.lut.h
 @begin objectConstructorTable


@@ -75,41 +78,46 @@ const ClassInfo ObjectConstructor::s_info = { "Function", &InternalFunction::s_i
 @end
 */
 
 @end
 */
 

-ObjectConstructor::ObjectConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, ObjectPrototype* objectPrototype)
-    : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, "Object"))
+ObjectConstructor::ObjectConstructor(JSGlobalObject* globalObject, Structure* structure)
+    : InternalFunction(globalObject, structure)
+{
+}
+
+void ObjectConstructor::finishCreation(ExecState* exec, ObjectPrototype* objectPrototype)

 {
 {

+    Base::finishCreation(exec->vm(), Identifier(exec, "Object").string());

     // ECMA 15.2.3.1
     // ECMA 15.2.3.1

-    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);

     // no. of arguments for constructor
     // no. of arguments for constructor

-    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete);

 }
 
 }
 

-bool ObjectConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
+bool ObjectConstructor::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName propertyName, PropertySlot &slot)

 {
 {

-    return getStaticFunctionSlot<JSObject>(exec, ExecState::objectConstructorTable(exec), this, propertyName, slot);
+    return getStaticFunctionSlot<JSObject>(exec, ExecState::objectConstructorTable(exec), jsCast<ObjectConstructor*>(cell), propertyName, slot);

 }
 
 }
 

-bool ObjectConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+bool ObjectConstructor::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)

 {
 {

-    return getStaticFunctionDescriptor<JSObject>(exec, ExecState::objectConstructorTable(exec), this, propertyName, descriptor);
+    return getStaticFunctionDescriptor<JSObject>(exec, ExecState::objectConstructorTable(exec), jsCast<ObjectConstructor*>(object), propertyName, descriptor);

 }
 
 }
 

-// ECMA 15.2.2
-static ALWAYS_INLINE JSObject* constructObject(ExecState* exec, JSGlobalObject* globalObject, const ArgList& args)
+static ALWAYS_INLINE JSObject* constructObject(ExecState* exec)

 {
 {

+    JSGlobalObject* globalObject = exec->callee()->globalObject();
+    ArgList args(exec);

     JSValue arg = args.at(0);
     if (arg.isUndefinedOrNull())
     JSValue arg = args.at(0);
     if (arg.isUndefinedOrNull())

-        return constructEmptyObject(exec, globalObject);
+        return constructEmptyObject(exec, globalObject->objectPrototype());

     return arg.toObject(exec, globalObject);
 }
 
 static EncodedJSValue JSC_HOST_CALL constructWithObjectConstructor(ExecState* exec)
 {
     return arg.toObject(exec, globalObject);
 }
 
 static EncodedJSValue JSC_HOST_CALL constructWithObjectConstructor(ExecState* exec)
 {

-    ArgList args(exec);
-    return JSValue::encode(constructObject(exec, asInternalFunction(exec->callee())->globalObject(), args));
+    return JSValue::encode(constructObject(exec));

 }
 
 }
 

-ConstructType ObjectConstructor::getConstructData(ConstructData& constructData)
+ConstructType ObjectConstructor::getConstructData(JSCell*, ConstructData& constructData)

 {
     constructData.native.function = constructWithObjectConstructor;
     return ConstructTypeHost;
 {
     constructData.native.function = constructWithObjectConstructor;
     return ConstructTypeHost;


@@ -117,11 +125,10 @@ ConstructType ObjectConstructor::getConstructData(ConstructData& constructData)
 
 static EncodedJSValue JSC_HOST_CALL callObjectConstructor(ExecState* exec)
 {
 
 static EncodedJSValue JSC_HOST_CALL callObjectConstructor(ExecState* exec)
 {

-    ArgList args(exec);
-    return JSValue::encode(constructObject(exec, asInternalFunction(exec->callee())->globalObject(), args));
+    return JSValue::encode(constructObject(exec));

 }
 
 }
 

-CallType ObjectConstructor::getCallData(CallData& callData)
+CallType ObjectConstructor::getCallData(JSCell*, CallData& callData)

 {
     callData.native.function = callObjectConstructor;
     return CallTypeHost;
 {
     callData.native.function = callObjectConstructor;
     return CallTypeHost;


@@ -130,35 +137,40 @@ CallType ObjectConstructor::getCallData(CallData& callData)
 EncodedJSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 EncodedJSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Requested prototype of a value that is not an object."));
-    return JSValue::encode(asObject(exec->argument(0))->prototype());
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Requested prototype of a value that is not an object.")));
+    JSObject* object = asObject(exec->argument(0));
+    if (!object->allowsAccessFrom(exec->trueCallerFrame()))
+        return JSValue::encode(jsUndefined());
+    return JSValue::encode(object->prototype());

 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Requested property descriptor of a value that is not an object."));
-    UString propertyName = exec->argument(1).toString(exec);
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Requested property descriptor of a value that is not an object.")));
+    String propertyName = exec->argument(1).toString(exec)->value(exec);

     if (exec->hadException())
         return JSValue::encode(jsNull());
     JSObject* object = asObject(exec->argument(0));
     PropertyDescriptor descriptor;
     if (exec->hadException())
         return JSValue::encode(jsNull());
     JSObject* object = asObject(exec->argument(0));
     PropertyDescriptor descriptor;

-    if (!object->getOwnPropertyDescriptor(exec, Identifier(exec, propertyName), descriptor))
+    if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, Identifier(exec, propertyName), descriptor))

         return JSValue::encode(jsUndefined());
     if (exec->hadException())
         return JSValue::encode(jsUndefined());
 
     JSObject* description = constructEmptyObject(exec);
     if (!descriptor.isAccessorDescriptor()) {
         return JSValue::encode(jsUndefined());
     if (exec->hadException())
         return JSValue::encode(jsUndefined());
 
     JSObject* description = constructEmptyObject(exec);
     if (!descriptor.isAccessorDescriptor()) {

-        description->putDirect(exec->globalData(), exec->propertyNames().value, descriptor.value() ? descriptor.value() : jsUndefined(), 0);
-        description->putDirect(exec->globalData(), exec->propertyNames().writable, jsBoolean(descriptor.writable()), 0);
+        description->putDirect(exec->vm(), exec->propertyNames().value, descriptor.value() ? descriptor.value() : jsUndefined(), 0);
+        description->putDirect(exec->vm(), exec->propertyNames().writable, jsBoolean(descriptor.writable()), 0);

     } else {
     } else {

-        description->putDirect(exec->globalData(), exec->propertyNames().get, descriptor.getter() ? descriptor.getter() : jsUndefined(), 0);
-        description->putDirect(exec->globalData(), exec->propertyNames().set, descriptor.setter() ? descriptor.setter() : jsUndefined(), 0);
+        ASSERT(descriptor.getter());
+        ASSERT(descriptor.setter());
+        description->putDirect(exec->vm(), exec->propertyNames().get, descriptor.getter(), 0);
+        description->putDirect(exec->vm(), exec->propertyNames().set, descriptor.setter(), 0);

     }
     
     }
     

-    description->putDirect(exec->globalData(), exec->propertyNames().enumerable, jsBoolean(descriptor.enumerable()), 0);
-    description->putDirect(exec->globalData(), exec->propertyNames().configurable, jsBoolean(descriptor.configurable()), 0);
+    description->putDirect(exec->vm(), exec->propertyNames().enumerable, jsBoolean(descriptor.enumerable()), 0);
+    description->putDirect(exec->vm(), exec->propertyNames().configurable, jsBoolean(descriptor.configurable()), 0);

 
     return JSValue::encode(description);
 }
 
     return JSValue::encode(description);
 }


@@ -167,13 +179,13 @@ EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState
 EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Requested property names of a value that is not an object."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Requested property names of a value that is not an object.")));

     PropertyNameArray properties(exec);
     PropertyNameArray properties(exec);

-    asObject(exec->argument(0))->getOwnPropertyNames(exec, properties, IncludeDontEnumProperties);
-    JSArray* names = constructEmptyArray(exec);
+    asObject(exec->argument(0))->methodTable()->getOwnPropertyNames(asObject(exec->argument(0)), exec, properties, IncludeDontEnumProperties);
+    JSArray* names = constructEmptyArray(exec, 0);

     size_t numProperties = properties.size();
     for (size_t i = 0; i < numProperties; i++)
     size_t numProperties = properties.size();
     for (size_t i = 0; i < numProperties; i++)

-        names->push(exec, jsOwnedString(exec, properties[i].ustring()));
+        names->push(exec, jsOwnedString(exec, properties[i].string()));

     return JSValue::encode(names);
 }
 
     return JSValue::encode(names);
 }
 


@@ -181,13 +193,13 @@ EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState* exe
 EncodedJSValue JSC_HOST_CALL objectConstructorKeys(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 EncodedJSValue JSC_HOST_CALL objectConstructorKeys(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Requested keys of a value that is not an object."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Requested keys of a value that is not an object.")));

     PropertyNameArray properties(exec);
     PropertyNameArray properties(exec);

-    asObject(exec->argument(0))->getOwnPropertyNames(exec, properties);
-    JSArray* keys = constructEmptyArray(exec);
+    asObject(exec->argument(0))->methodTable()->getOwnPropertyNames(asObject(exec->argument(0)), exec, properties, ExcludeDontEnumProperties);
+    JSArray* keys = constructEmptyArray(exec, 0);

     size_t numProperties = properties.size();
     for (size_t i = 0; i < numProperties; i++)
     size_t numProperties = properties.size();
     for (size_t i = 0; i < numProperties; i++)

-        keys->push(exec, jsOwnedString(exec, properties[i].ustring()));
+        keys->push(exec, jsOwnedString(exec, properties[i].string()));

     return JSValue::encode(keys);
 }
 
     return JSValue::encode(keys);
 }
 


@@ -195,7 +207,7 @@ EncodedJSValue JSC_HOST_CALL objectConstructorKeys(ExecState* exec)
 static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor& desc)
 {
     if (!in.isObject()) {
 static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor& desc)
 {
     if (!in.isObject()) {

-        throwError(exec, createTypeError(exec, "Property description must be an object."));
+        throwError(exec, createTypeError(exec, ASCIILiteral("Property description must be an object.")));

         return false;
     }
     JSObject* description = asObject(in);
         return false;
     }
     JSObject* description = asObject(in);


@@ -237,11 +249,10 @@ static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor
         if (!get.isUndefined()) {
             CallData callData;
             if (getCallData(get, callData) == CallTypeNone) {
         if (!get.isUndefined()) {
             CallData callData;
             if (getCallData(get, callData) == CallTypeNone) {

-                throwError(exec, createTypeError(exec, "Getter must be a function."));
+                throwError(exec, createTypeError(exec, ASCIILiteral("Getter must be a function.")));

                 return false;
             }
                 return false;
             }

-        } else
-            get = JSValue();
+        }

         desc.setGetter(get);
     }
 
         desc.setGetter(get);
     }
 


@@ -253,12 +264,10 @@ static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor
         if (!set.isUndefined()) {
             CallData callData;
             if (getCallData(set, callData) == CallTypeNone) {
         if (!set.isUndefined()) {
             CallData callData;
             if (getCallData(set, callData) == CallTypeNone) {

-                throwError(exec, createTypeError(exec, "Setter must be a function."));
+                throwError(exec, createTypeError(exec, ASCIILiteral("Setter must be a function.")));

                 return false;
             }
                 return false;
             }

-        } else
-            set = JSValue();
-
+        }

         desc.setSetter(set);
     }
 
         desc.setSetter(set);
     }
 


@@ -266,12 +275,12 @@ static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor
         return true;
 
     if (desc.value()) {
         return true;
 
     if (desc.value()) {

-        throwError(exec, createTypeError(exec, "Invalid property.  'value' present on property with getter or setter."));
+        throwError(exec, createTypeError(exec, ASCIILiteral("Invalid property.  'value' present on property with getter or setter.")));

         return false;
     }
 
     if (desc.writablePresent()) {
         return false;
     }
 
     if (desc.writablePresent()) {

-        throwError(exec, createTypeError(exec, "Invalid property.  'writable' present on property with getter or setter."));
+        throwError(exec, createTypeError(exec, ASCIILiteral("Invalid property.  'writable' present on property with getter or setter.")));

         return false;
     }
     return true;
         return false;
     }
     return true;


@@ -280,24 +289,24 @@ static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor
 EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperty(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperty(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Properties can only be defined on Objects."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Properties can only be defined on Objects.")));

     JSObject* O = asObject(exec->argument(0));
     JSObject* O = asObject(exec->argument(0));

-    UString propertyName = exec->argument(1).toString(exec);
+    String propertyName = exec->argument(1).toString(exec)->value(exec);

     if (exec->hadException())
         return JSValue::encode(jsNull());
     PropertyDescriptor descriptor;
     if (!toPropertyDescriptor(exec, exec->argument(2), descriptor))
         return JSValue::encode(jsNull());
     if (exec->hadException())
         return JSValue::encode(jsNull());
     PropertyDescriptor descriptor;
     if (!toPropertyDescriptor(exec, exec->argument(2), descriptor))
         return JSValue::encode(jsNull());

-    ASSERT((descriptor.attributes() & (Getter | Setter)) || (!descriptor.isAccessorDescriptor()));
+    ASSERT((descriptor.attributes() & Accessor) || (!descriptor.isAccessorDescriptor()));

     ASSERT(!exec->hadException());
     ASSERT(!exec->hadException());

-    O->defineOwnProperty(exec, Identifier(exec, propertyName), descriptor, true);
+    O->methodTable()->defineOwnProperty(O, exec, Identifier(exec, propertyName), descriptor, true);

     return JSValue::encode(O);
 }
 
 static JSValue defineProperties(ExecState* exec, JSObject* object, JSObject* properties)
 {
     PropertyNameArray propertyNames(exec);
     return JSValue::encode(O);
 }
 
 static JSValue defineProperties(ExecState* exec, JSObject* object, JSObject* properties)
 {
     PropertyNameArray propertyNames(exec);

-    asObject(properties)->getOwnPropertyNames(exec, propertyNames);
+    asObject(properties)->methodTable()->getOwnPropertyNames(asObject(properties), exec, propertyNames, ExcludeDontEnumProperties);

     size_t numProperties = propertyNames.size();
     Vector<PropertyDescriptor> descriptors;
     MarkedArgumentBuffer markBuffer;
     size_t numProperties = propertyNames.size();
     Vector<PropertyDescriptor> descriptors;
     MarkedArgumentBuffer markBuffer;


@@ -321,7 +330,7 @@ static JSValue defineProperties(ExecState* exec, JSObject* object, JSObject* pro
         }
     }
     for (size_t i = 0; i < numProperties; i++) {
         }
     }
     for (size_t i = 0; i < numProperties; i++) {

-        object->defineOwnProperty(exec, propertyNames[i], descriptors[i], true);
+        object->methodTable()->defineOwnProperty(object, exec, propertyNames[i], descriptors[i], true);

         if (exec->hadException())
             return jsNull();
     }
         if (exec->hadException())
             return jsNull();
     }


@@ -331,40 +340,100 @@ static JSValue defineProperties(ExecState* exec, JSObject* object, JSObject* pro
 EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperties(ExecState* exec)
 {
     if (!exec->argument(0).isObject())
 EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperties(ExecState* exec)
 {
     if (!exec->argument(0).isObject())

-        return throwVMError(exec, createTypeError(exec, "Properties can only be defined on Objects."));
-    if (!exec->argument(1).isObject())
-        return throwVMError(exec, createTypeError(exec, "Property descriptor list must be an Object."));
-    return JSValue::encode(defineProperties(exec, asObject(exec->argument(0)), asObject(exec->argument(1))));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Properties can only be defined on Objects.")));
+    return JSValue::encode(defineProperties(exec, asObject(exec->argument(0)), exec->argument(1).toObject(exec)));

 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorCreate(ExecState* exec)
 {
     if (!exec->argument(0).isObject() && !exec->argument(0).isNull())
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorCreate(ExecState* exec)
 {
     if (!exec->argument(0).isObject() && !exec->argument(0).isNull())

-        return throwVMError(exec, createTypeError(exec, "Object prototype may only be an Object or null."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object prototype may only be an Object or null.")));

     JSValue proto = exec->argument(0);
     JSValue proto = exec->argument(0);

-    JSObject* newObject = proto.isObject() ? constructEmptyObject(exec, asObject(proto)->inheritorID(exec->globalData())) : constructEmptyObject(exec, exec->lexicalGlobalObject()->nullPrototypeObjectStructure());
+    JSObject* newObject = proto.isObject()
+        ? constructEmptyObject(exec, asObject(proto))
+        : constructEmptyObject(exec, exec->lexicalGlobalObject()->nullPrototypeObjectStructure());

     if (exec->argument(1).isUndefined())
         return JSValue::encode(newObject);
     if (!exec->argument(1).isObject())
     if (exec->argument(1).isUndefined())
         return JSValue::encode(newObject);
     if (!exec->argument(1).isObject())

-        return throwVMError(exec, createTypeError(exec, "Property descriptor list must be an Object."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Property descriptor list must be an Object.")));

     return JSValue::encode(defineProperties(exec, newObject, asObject(exec->argument(1))));
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorSeal(ExecState* exec)
 {
     return JSValue::encode(defineProperties(exec, newObject, asObject(exec->argument(1))));
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorSeal(ExecState* exec)
 {

+    // 1. If Type(O) is not Object throw a TypeError exception.

     JSValue obj = exec->argument(0);
     if (!obj.isObject())
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.seal can only be called on Objects."));
-    asObject(obj)->seal(exec->globalData());
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.seal can only be called on Objects.")));
+    JSObject* object = asObject(obj);
+
+    if (isJSFinalObject(object)) {
+        object->seal(exec->vm());
+        return JSValue::encode(obj);
+    }
+
+    // 2. For each named own property name P of O,
+    PropertyNameArray properties(exec);
+    object->methodTable()->getOwnPropertyNames(object, exec, properties, IncludeDontEnumProperties);
+    PropertyNameArray::const_iterator end = properties.end();
+    for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+        // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+        PropertyDescriptor desc;
+        if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, *iter, desc))
+            continue;
+        // b. If desc.[[Configurable]] is true, set desc.[[Configurable]] to false.
+        desc.setConfigurable(false);
+        // c. Call the [[DefineOwnProperty]] internal method of O with P, desc, and true as arguments.
+        object->methodTable()->defineOwnProperty(object, exec, *iter, desc, true);
+        if (exec->hadException())
+            return JSValue::encode(obj);
+    }
+
+    // 3. Set the [[Extensible]] internal property of O to false.
+    object->preventExtensions(exec->vm());
+
+    // 4. Return O.

     return JSValue::encode(obj);
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorFreeze(ExecState* exec)
 {
     return JSValue::encode(obj);
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorFreeze(ExecState* exec)
 {

+    // 1. If Type(O) is not Object throw a TypeError exception.

     JSValue obj = exec->argument(0);
     if (!obj.isObject())
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.freeze can only be called on Objects."));
-    asObject(obj)->freeze(exec->globalData());
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.freeze can only be called on Objects.")));
+    JSObject* object = asObject(obj);
+
+    if (isJSFinalObject(object) && !hasIndexedProperties(object->structure()->indexingType())) {
+        object->freeze(exec->vm());
+        return JSValue::encode(obj);
+    }
+
+    // 2. For each named own property name P of O,
+    PropertyNameArray properties(exec);
+    object->methodTable()->getOwnPropertyNames(object, exec, properties, IncludeDontEnumProperties);
+    PropertyNameArray::const_iterator end = properties.end();
+    for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+        // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+        PropertyDescriptor desc;
+        if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, *iter, desc))
+            continue;
+        // b. If IsDataDescriptor(desc) is true, then
+        // i. If desc.[[Writable]] is true, set desc.[[Writable]] to false.
+        if (desc.isDataDescriptor())
+            desc.setWritable(false);
+        // c. If desc.[[Configurable]] is true, set desc.[[Configurable]] to false.
+        desc.setConfigurable(false);
+        // d. Call the [[DefineOwnProperty]] internal method of O with P, desc, and true as arguments.
+        object->methodTable()->defineOwnProperty(object, exec, *iter, desc, true);
+        if (exec->hadException())
+            return JSValue::encode(obj);
+    }
+
+    // 3. Set the [[Extensible]] internal property of O to false.
+    object->preventExtensions(exec->vm());
+
+    // 4. Return O.

     return JSValue::encode(obj);
 }
 
     return JSValue::encode(obj);
 }
 


@@ -372,32 +441,77 @@ EncodedJSValue JSC_HOST_CALL objectConstructorPreventExtensions(ExecState* exec)
 {
     JSValue obj = exec->argument(0);
     if (!obj.isObject())
 {
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.preventExtensions can only be called on Objects."));
-    asObject(obj)->preventExtensions(exec->globalData());
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.preventExtensions can only be called on Objects.")));
+    asObject(obj)->preventExtensions(exec->vm());

     return JSValue::encode(obj);
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsSealed(ExecState* exec)
 {
     return JSValue::encode(obj);
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsSealed(ExecState* exec)
 {

+    // 1. If Type(O) is not Object throw a TypeError exception.

     JSValue obj = exec->argument(0);
     if (!obj.isObject())
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.isSealed can only be called on Objects."));
-    return JSValue::encode(jsBoolean(asObject(obj)->isSealed(exec->globalData())));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.isSealed can only be called on Objects.")));
+    JSObject* object = asObject(obj);
+
+    if (isJSFinalObject(object))
+        return JSValue::encode(jsBoolean(object->isSealed(exec->vm())));
+
+    // 2. For each named own property name P of O,
+    PropertyNameArray properties(exec);
+    object->methodTable()->getOwnPropertyNames(object, exec, properties, IncludeDontEnumProperties);
+    PropertyNameArray::const_iterator end = properties.end();
+    for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+        // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+        PropertyDescriptor desc;
+        if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, *iter, desc))
+            continue;
+        // b. If desc.[[Configurable]] is true, then return false.
+        if (desc.configurable())
+            return JSValue::encode(jsBoolean(false));
+    }
+
+    // 3. If the [[Extensible]] internal property of O is false, then return true.
+    // 4. Otherwise, return false.
+    return JSValue::encode(jsBoolean(!object->isExtensible()));

 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsFrozen(ExecState* exec)
 {
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsFrozen(ExecState* exec)
 {

+    // 1. If Type(O) is not Object throw a TypeError exception.

     JSValue obj = exec->argument(0);
     if (!obj.isObject())
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.isFrozen can only be called on Objects."));
-    return JSValue::encode(jsBoolean(asObject(obj)->isFrozen(exec->globalData())));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.isFrozen can only be called on Objects.")));
+    JSObject* object = asObject(obj);
+
+    if (isJSFinalObject(object))
+        return JSValue::encode(jsBoolean(object->isFrozen(exec->vm())));
+
+    // 2. For each named own property name P of O,
+    PropertyNameArray properties(exec);
+    object->methodTable()->getOwnPropertyNames(object, exec, properties, IncludeDontEnumProperties);
+    PropertyNameArray::const_iterator end = properties.end();
+    for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+        // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+        PropertyDescriptor desc;
+        if (!object->methodTable()->getOwnPropertyDescriptor(object, exec, *iter, desc))
+            continue;
+        // b. If IsDataDescriptor(desc) is true then
+        // i. If desc.[[Writable]] is true, return false. c. If desc.[[Configurable]] is true, then return false.
+        if ((desc.isDataDescriptor() && desc.writable()) || desc.configurable())
+            return JSValue::encode(jsBoolean(false));
+    }
+
+    // 3. If the [[Extensible]] internal property of O is false, then return true.
+    // 4. Otherwise, return false.
+    return JSValue::encode(jsBoolean(!object->isExtensible()));

 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsExtensible(ExecState* exec)
 {
     JSValue obj = exec->argument(0);
     if (!obj.isObject())
 }
 
 EncodedJSValue JSC_HOST_CALL objectConstructorIsExtensible(ExecState* exec)
 {
     JSValue obj = exec->argument(0);
     if (!obj.isObject())

-        return throwVMError(exec, createTypeError(exec, "Object.isExtensible can only be called on Objects."));
+        return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object.isExtensible can only be called on Objects.")));

     return JSValue::encode(jsBoolean(asObject(obj)->isExtensible()));
 }
 
     return JSValue::encode(jsBoolean(asObject(obj)->isExtensible()));
 }