#include "config.h"
#include "ObjectConstructor.h"
+#include "ButterflyInlines.h"
+#include "CopiedSpaceInlines.h"
#include "Error.h"
#include "ExceptionHelpers.h"
-#include "JSFunction.h"
#include "JSArray.h"
+#include "JSCInlines.h"
+#include "JSFunction.h"
#include "JSGlobalObject.h"
+#include "JSGlobalObjectFunctions.h"
#include "Lookup.h"
#include "ObjectPrototype.h"
#include "PropertyDescriptor.h"
#include "PropertyNameArray.h"
+#include "StackVisitor.h"
+#include "Symbol.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 objectConstructorKeys(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperty(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperties(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorCreate(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorSeal(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorFreeze(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorPreventExtensions(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorIsSealed(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorIsFrozen(ExecState*);
-static EncodedJSValue JSC_HOST_CALL objectConstructorIsExtensible(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorGetPrototypeOf(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorSetPrototypeOf(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyNames(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperty(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorDefineProperties(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorCreate(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorSeal(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorFreeze(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorPreventExtensions(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorIsSealed(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorIsFrozen(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorIsExtensible(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorIs(ExecState*);
}
namespace JSC {
-const ClassInfo ObjectConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::objectConstructorTable };
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ObjectConstructor);
+
+const ClassInfo ObjectConstructor::s_info = { "Function", &InternalFunction::s_info, &objectConstructorTable, CREATE_METHOD_TABLE(ObjectConstructor) };
/* Source for ObjectConstructor.lut.h
@begin objectConstructorTable
getPrototypeOf objectConstructorGetPrototypeOf DontEnum|Function 1
+ setPrototypeOf objectConstructorSetPrototypeOf DontEnum|Function 2
getOwnPropertyDescriptor objectConstructorGetOwnPropertyDescriptor DontEnum|Function 2
getOwnPropertyNames objectConstructorGetOwnPropertyNames DontEnum|Function 1
keys objectConstructorKeys DontEnum|Function 1
isSealed objectConstructorIsSealed DontEnum|Function 1
isFrozen objectConstructorIsFrozen DontEnum|Function 1
isExtensible objectConstructorIsExtensible DontEnum|Function 1
+ is objectConstructorIs DontEnum|Function 2
+ assign objectConstructorAssign DontEnum|Function 2
@end
*/
-ObjectConstructor::ObjectConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, ObjectPrototype* objectPrototype)
- : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, "Object"))
+ObjectConstructor::ObjectConstructor(VM& vm, Structure* structure)
+ : InternalFunction(vm, structure)
+{
+}
+
+void ObjectConstructor::finishCreation(VM& vm, JSGlobalObject* globalObject, ObjectPrototype* objectPrototype)
{
+ Base::finishCreation(vm, objectPrototype->classInfo()->className);
// ECMA 15.2.3.1
- putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);
+ putDirectWithoutTransition(vm, vm.propertyNames->prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);
// no. of arguments for constructor
- putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
+ putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
+
+ if (!globalObject->runtimeFlags().isSymbolDisabled())
+ JSC_NATIVE_FUNCTION("getOwnPropertySymbols", objectConstructorGetOwnPropertySymbols, DontEnum, 1);
+
+ JSC_NATIVE_FUNCTION(vm.propertyNames->getPrototypeOfPrivateName, objectConstructorGetPrototypeOf, DontEnum, 1);
+ JSC_NATIVE_FUNCTION(vm.propertyNames->getOwnPropertyNamesPrivateName, objectConstructorGetOwnPropertyNames, DontEnum, 1);
}
-bool ObjectConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot)
+JSFunction* ObjectConstructor::addDefineProperty(ExecState* exec, JSGlobalObject* globalObject)
{
- return getStaticFunctionSlot<JSObject>(exec, ExecState::objectConstructorTable(exec), this, propertyName, slot);
+ VM& vm = exec->vm();
+ JSFunction* definePropertyFunction = JSFunction::create(vm, globalObject, 3, vm.propertyNames->defineProperty.string(), objectConstructorDefineProperty);
+ putDirectWithoutTransition(vm, vm.propertyNames->defineProperty, definePropertyFunction, DontEnum);
+ return definePropertyFunction;
}
-bool ObjectConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+bool ObjectConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
{
- return getStaticFunctionDescriptor<JSObject>(exec, ExecState::objectConstructorTable(exec), this, propertyName, descriptor);
+ return getStaticFunctionSlot<JSObject>(exec, objectConstructorTable, jsCast<ObjectConstructor*>(object), propertyName, slot);
}
-// 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())
- return constructEmptyObject(exec, globalObject);
+ return constructEmptyObject(exec, globalObject->objectPrototype());
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;
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;
}
+class ObjectConstructorGetPrototypeOfFunctor {
+public:
+ ObjectConstructorGetPrototypeOfFunctor(JSObject* object)
+ : m_hasSkippedFirstFrame(false)
+ , m_object(object)
+ , m_result(JSValue::encode(jsUndefined()))
+ {
+ }
+
+ EncodedJSValue result() const { return m_result; }
+
+ StackVisitor::Status operator()(StackVisitor& visitor)
+ {
+ if (!m_hasSkippedFirstFrame) {
+ m_hasSkippedFirstFrame = true;
+ return StackVisitor::Continue;
+ }
+
+ if (m_object->allowsAccessFrom(visitor->callFrame()))
+ m_result = JSValue::encode(m_object->prototype());
+ return StackVisitor::Done;
+ }
+
+private:
+ bool m_hasSkippedFirstFrame;
+ JSObject* m_object;
+ EncodedJSValue m_result;
+};
+
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());
+ JSObject* object = exec->argument(0).toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(jsNull());
+ ObjectConstructorGetPrototypeOfFunctor functor(object);
+ exec->iterate(functor);
+ return functor.result();
+}
+
+EncodedJSValue JSC_HOST_CALL objectConstructorSetPrototypeOf(ExecState* exec)
+{
+ JSValue objectValue = exec->argument(0);
+ if (objectValue.isUndefinedOrNull())
+ return throwVMTypeError(exec);
+
+ JSValue protoValue = exec->argument(1);
+ if (!protoValue.isObject() && !protoValue.isNull())
+ return throwVMTypeError(exec);
+
+ JSObject* object = objectValue.toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(objectValue);
+
+ if (!checkProtoSetterAccessAllowed(exec, object))
+ return JSValue::encode(objectValue);
+
+ if (!object->isExtensible())
+ return throwVMError(exec, createTypeError(exec, StrictModeReadonlyPropertyWriteError));
+
+ if (!object->setPrototypeWithCycleCheck(exec, protoValue)) {
+ exec->vm().throwException(exec, createError(exec, ASCIILiteral("cyclic __proto__ value")));
+ return JSValue::encode(jsUndefined());
+ }
+
+ return JSValue::encode(objectValue);
}
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);
+ JSObject* object = exec->argument(0).toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(jsNull());
+ auto propertyName = exec->argument(1).toPropertyKey(exec);
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->getOwnPropertyDescriptor(exec, propertyName, descriptor))
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 {
- 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);
}
// FIXME: Use the enumeration cache.
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."));
+ JSObject* object = exec->argument(0).toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(jsNull());
PropertyNameArray properties(exec);
- asObject(exec->argument(0))->getOwnPropertyNames(exec, properties, IncludeDontEnumProperties);
- JSArray* names = constructEmptyArray(exec);
+ object->methodTable(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include));
+ JSArray* names = constructEmptyArray(exec, 0);
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);
+}
+
+// FIXME: Use the enumeration cache.
+EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertySymbols(ExecState* exec)
+{
+ JSObject* object = exec->argument(0).toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(jsNull());
+ PropertyNameArray properties(exec);
+ object->methodTable(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include, SymbolPropertiesMode::Include));
+ JSArray* names = constructEmptyArray(exec, 0);
+ size_t numProperties = properties.size();
+ for (size_t i = 0; i < numProperties; i++) {
+ auto impl = properties[i].impl();
+ if (impl->isSymbol() && !exec->propertyNames().isPrivateName(*impl))
+ names->push(exec, Symbol::create(exec->vm(), static_cast<SymbolImpl&>(*impl)));
+ }
return JSValue::encode(names);
}
// FIXME: Use the enumeration cache.
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."));
+ JSObject* object = exec->argument(0).toObject(exec);
+ if (exec->hadException())
+ return JSValue::encode(jsNull());
PropertyNameArray properties(exec);
- asObject(exec->argument(0))->getOwnPropertyNames(exec, properties);
- JSArray* keys = constructEmptyArray(exec);
+ object->methodTable(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode());
+ JSArray* keys = constructEmptyArray(exec, 0);
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);
}
static bool toPropertyDescriptor(ExecState* exec, JSValue in, PropertyDescriptor& desc)
{
if (!in.isObject()) {
- throwError(exec, createTypeError(exec, "Property description must be an object."));
+ exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Property description must be an object.")));
return false;
}
JSObject* description = asObject(in);
if (!get.isUndefined()) {
CallData callData;
if (getCallData(get, callData) == CallTypeNone) {
- throwError(exec, createTypeError(exec, "Getter must be a function."));
+ exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Getter must be a function.")));
return false;
}
- } else
- get = JSValue();
+ }
desc.setGetter(get);
}
if (!set.isUndefined()) {
CallData callData;
if (getCallData(set, callData) == CallTypeNone) {
- throwError(exec, createTypeError(exec, "Setter must be a function."));
+ exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Setter must be a function.")));
return false;
}
- } else
- set = JSValue();
-
+ }
desc.setSetter(set);
}
return true;
if (desc.value()) {
- throwError(exec, createTypeError(exec, "Invalid property. 'value' present on property with getter or setter."));
+ exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Invalid property. 'value' present on property with getter or setter.")));
return false;
}
if (desc.writablePresent()) {
- throwError(exec, createTypeError(exec, "Invalid property. 'writable' present on property with getter or setter."));
+ exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Invalid property. 'writable' present on property with getter or setter.")));
return false;
}
return true;
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));
- UString propertyName = exec->argument(1).toString(exec);
+ auto propertyName = exec->argument(1).toPropertyKey(exec);
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());
- O->defineOwnProperty(exec, Identifier(exec, propertyName), descriptor, true);
+ O->methodTable(exec->vm())->defineOwnProperty(O, exec, propertyName, descriptor, true);
return JSValue::encode(O);
}
static JSValue defineProperties(ExecState* exec, JSObject* object, JSObject* properties)
{
PropertyNameArray propertyNames(exec);
- asObject(properties)->getOwnPropertyNames(exec, propertyNames);
+ asObject(properties)->methodTable(exec->vm())->getOwnPropertyNames(asObject(properties), exec, propertyNames, EnumerationMode(DontEnumPropertiesMode::Exclude, SymbolPropertiesMode::Include));
size_t numProperties = propertyNames.size();
Vector<PropertyDescriptor> descriptors;
MarkedArgumentBuffer markBuffer;
for (size_t i = 0; i < numProperties; i++) {
- PropertySlot slot;
JSValue prop = properties->get(exec, propertyNames[i]);
if (exec->hadException())
return jsNull();
}
}
for (size_t i = 0; i < numProperties; i++) {
- object->defineOwnProperty(exec, propertyNames[i], descriptors[i], true);
+ Identifier propertyName = propertyNames[i];
+ if (exec->propertyNames().isPrivateName(propertyName))
+ continue;
+ object->methodTable(exec->vm())->defineOwnProperty(object, exec, propertyName, descriptors[i], true);
if (exec->hadException())
return jsNull();
}
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())
- return throwVMError(exec, createTypeError(exec, "Object prototype may only be an Object or null."));
JSValue proto = exec->argument(0);
- JSObject* newObject = proto.isObject() ? constructEmptyObject(exec, asObject(proto)->inheritorID(exec->globalData())) : constructEmptyObject(exec, exec->lexicalGlobalObject()->nullPrototypeObjectStructure());
+ if (!proto.isObject() && !proto.isNull())
+ return throwVMError(exec, createTypeError(exec, ASCIILiteral("Object prototype may only be an Object or null.")));
+ 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())
- 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)
{
+ // 1. If Type(O) is not Object, return O.
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 JSValue::encode(obj);
+ 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(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include, SymbolPropertiesMode::Include));
+ PropertyNameArray::const_iterator end = properties.end();
+ for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+ Identifier propertyName = *iter;
+ if (exec->propertyNames().isPrivateName(propertyName))
+ continue;
+ // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+ PropertyDescriptor desc;
+ if (!object->getOwnPropertyDescriptor(exec, propertyName, 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(exec->vm())->defineOwnProperty(object, exec, propertyName, 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);
}
+JSObject* objectConstructorFreeze(ExecState* exec, JSObject* object)
+{
+ if (isJSFinalObject(object) && !hasIndexedProperties(object->indexingType())) {
+ object->freeze(exec->vm());
+ return object;
+ }
+
+ // 2. For each named own property name P of O,
+ PropertyNameArray properties(exec);
+ object->methodTable(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include, SymbolPropertiesMode::Include));
+ PropertyNameArray::const_iterator end = properties.end();
+ for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+ Identifier propertyName = *iter;
+ if (exec->propertyNames().isPrivateName(propertyName))
+ continue;
+ // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+ PropertyDescriptor desc;
+ if (!object->getOwnPropertyDescriptor(exec, propertyName, 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(exec->vm())->defineOwnProperty(object, exec, propertyName, desc, true);
+ if (exec->hadException())
+ return object;
+ }
+
+ // 3. Set the [[Extensible]] internal property of O to false.
+ object->preventExtensions(exec->vm());
+
+ // 4. Return O.
+ return object;
+}
+
EncodedJSValue JSC_HOST_CALL objectConstructorFreeze(ExecState* exec)
{
+ // 1. If Type(O) is not Object, return O.
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 JSValue::encode(obj);
+ return JSValue::encode(obj);
+ return JSValue::encode(objectConstructorFreeze(exec, asObject(obj)));
}
EncodedJSValue JSC_HOST_CALL objectConstructorPreventExtensions(ExecState* exec)
{
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 JSValue::encode(obj);
+ asObject(obj)->preventExtensions(exec->vm());
return JSValue::encode(obj);
}
EncodedJSValue JSC_HOST_CALL objectConstructorIsSealed(ExecState* exec)
{
+ // 1. If Type(O) is not Object, return true.
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 JSValue::encode(jsBoolean(true));
+ 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(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include, SymbolPropertiesMode::Include));
+ PropertyNameArray::const_iterator end = properties.end();
+ for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+ Identifier propertyName = *iter;
+ if (exec->propertyNames().isPrivateName(propertyName))
+ continue;
+ // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+ PropertyDescriptor desc;
+ if (!object->getOwnPropertyDescriptor(exec, propertyName, 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)
{
+ // 1. If Type(O) is not Object, return true.
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 JSValue::encode(jsBoolean(true));
+ 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(exec->vm())->getOwnPropertyNames(object, exec, properties, EnumerationMode(DontEnumPropertiesMode::Include, SymbolPropertiesMode::Include));
+ PropertyNameArray::const_iterator end = properties.end();
+ for (PropertyNameArray::const_iterator iter = properties.begin(); iter != end; ++iter) {
+ Identifier propertyName = *iter;
+ if (exec->propertyNames().isPrivateName(propertyName))
+ continue;
+ // a. Let desc be the result of calling the [[GetOwnProperty]] internal method of O with P.
+ PropertyDescriptor desc;
+ if (!object->getOwnPropertyDescriptor(exec, propertyName, 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())
- return throwVMError(exec, createTypeError(exec, "Object.isExtensible can only be called on Objects."));
+ return JSValue::encode(jsBoolean(false));
return JSValue::encode(jsBoolean(asObject(obj)->isExtensible()));
}
+EncodedJSValue JSC_HOST_CALL objectConstructorIs(ExecState* exec)
+{
+ return JSValue::encode(jsBoolean(sameValue(exec, exec->argument(0), exec->argument(1))));
+}
+
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff