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/*
* Copyright (C) 2015 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ReflectObject.h"
#include "JSCInlines.h"
#include "JSGlobalObjectFunctions.h"
#include "JSPropertyNameIterator.h"
#include "Lookup.h"
#include "ObjectConstructor.h"
namespace JSC {
static EncodedJSValue JSC_HOST_CALL reflectObjectDefineProperty(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectEnumerate(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectGet(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectGetOwnPropertyDescriptor(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectGetPrototypeOf(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectIsExtensible(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectOwnKeys(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectPreventExtensions(ExecState*);
static EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState*);
}
#include "ReflectObject.lut.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ReflectObject);
const ClassInfo ReflectObject::s_info = { "Reflect", &Base::s_info, &reflectObjectTable, CREATE_METHOD_TABLE(ReflectObject) };
/* Source for ReflectObject.lut.h
@begin reflectObjectTable
apply JSBuiltin DontEnum|Function 3
defineProperty reflectObjectDefineProperty DontEnum|Function 3
deleteProperty JSBuiltin DontEnum|Function 2
enumerate reflectObjectEnumerate DontEnum|Function 1
get reflectObjectGet DontEnum|Function 2
getOwnPropertyDescriptor reflectObjectGetOwnPropertyDescriptor DontEnum|Function 2
getPrototypeOf reflectObjectGetPrototypeOf DontEnum|Function 1
has JSBuiltin DontEnum|Function 2
isExtensible reflectObjectIsExtensible DontEnum|Function 1
ownKeys reflectObjectOwnKeys DontEnum|Function 1
preventExtensions reflectObjectPreventExtensions DontEnum|Function 1
setPrototypeOf reflectObjectSetPrototypeOf DontEnum|Function 2
@end
*/
ReflectObject::ReflectObject(VM& vm, Structure* structure)
: JSNonFinalObject(vm, structure)
{
}
void ReflectObject::finishCreation(VM& vm, JSGlobalObject*)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
bool ReflectObject::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
{
return getStaticFunctionSlot<Base>(exec, reflectObjectTable, jsCast<ReflectObject*>(object), propertyName, slot);
}
// ------------------------------ Functions --------------------------------
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.defineproperty
EncodedJSValue JSC_HOST_CALL reflectObjectDefineProperty(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.defineProperty requires the first argument be an object")));
auto propertyName = exec->argument(1).toPropertyKey(exec);
if (exec->hadException())
return JSValue::encode(jsUndefined());
PropertyDescriptor descriptor;
if (!toPropertyDescriptor(exec, exec->argument(2), descriptor))
return JSValue::encode(jsUndefined());
ASSERT((descriptor.attributes() & Accessor) || (!descriptor.isAccessorDescriptor()));
ASSERT(!exec->hadException());
// Reflect.defineProperty should not throw an error when the defineOwnProperty operation fails.
bool shouldThrow = false;
JSObject* targetObject = asObject(target);
return JSValue::encode(jsBoolean(targetObject->methodTable(exec->vm())->defineOwnProperty(targetObject, exec, propertyName, descriptor, shouldThrow)));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.enumerate
EncodedJSValue JSC_HOST_CALL reflectObjectEnumerate(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.enumerate requires the first argument be an object")));
return JSValue::encode(JSPropertyNameIterator::create(exec, exec->lexicalGlobalObject()->propertyNameIteratorStructure(), asObject(target)));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.get
EncodedJSValue JSC_HOST_CALL reflectObjectGet(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.get requires the first argument be an object")));
const Identifier propertyName = exec->argument(1).toPropertyKey(exec);
if (exec->hadException())
return JSValue::encode(jsNull());
JSValue receiver = target;
if (exec->argumentCount() >= 3)
receiver = exec->argument(2);
PropertySlot slot(receiver, PropertySlot::InternalMethodType::Get);
return JSValue::encode(target.get(exec, propertyName, slot));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.getownpropertydescriptor
EncodedJSValue JSC_HOST_CALL reflectObjectGetOwnPropertyDescriptor(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.getOwnPropertyDescriptor requires the first argument be an object")));
auto key = exec->argument(1).toPropertyKey(exec);
if (exec->hadException())
return JSValue::encode(jsUndefined());
return JSValue::encode(objectConstructorGetOwnPropertyDescriptor(exec, asObject(target), key));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.getprototypeof
EncodedJSValue JSC_HOST_CALL reflectObjectGetPrototypeOf(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.getPrototypeOf requires the first argument be an object")));
return JSValue::encode(objectConstructorGetPrototypeOf(exec, asObject(target)));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.isextensible
EncodedJSValue JSC_HOST_CALL reflectObjectIsExtensible(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.isExtensible requires the first argument be an object")));
return JSValue::encode(jsBoolean(asObject(target)->isExtensible()));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.ownkeys
EncodedJSValue JSC_HOST_CALL reflectObjectOwnKeys(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.ownKeys requires the first argument be an object")));
return JSValue::encode(ownPropertyKeys(exec, jsCast<JSObject*>(target), PropertyNameMode::StringsAndSymbols, DontEnumPropertiesMode::Include));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.preventextensions
EncodedJSValue JSC_HOST_CALL reflectObjectPreventExtensions(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.preventExtensions requires the first argument be an object")));
asObject(target)->preventExtensions(exec->vm());
return JSValue::encode(jsBoolean(true));
}
// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.setprototypeof
EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState* exec)
{
JSValue target = exec->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the first argument be an object")));
JSValue proto = exec->argument(1);
if (!proto.isObject() && !proto.isNull())
return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the second argument be either an object or null")));
JSObject* object = asObject(target);
if (!checkProtoSetterAccessAllowed(exec, object))
return JSValue::encode(jsBoolean(false));
if (object->prototype() == proto)
return JSValue::encode(jsBoolean(true));
if (!object->isExtensible())
return JSValue::encode(jsBoolean(false));
return JSValue::encode(jsBoolean(object->setPrototypeWithCycleCheck(exec, proto)));
}
} // namespace JSC
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