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/*
* Copyright (C) 2015-2017 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 "ObjectConstructor.h"
namespace JSC {
static JSC_DECLARE_HOST_FUNCTION(reflectObjectConstruct);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectDefineProperty);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectGetOwnPropertyDescriptor);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectGetPrototypeOf);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectIsExtensible);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectOwnKeys);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectPreventExtensions);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectSet);
static JSC_DECLARE_HOST_FUNCTION(reflectObjectSetPrototypeOf);
}
#include "ReflectObject.lut.h"
namespace JSC {
const ASCIILiteral ReflectOwnKeysNonObjectArgumentError { "Reflect.ownKeys requires the first argument be an object"_s };
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ReflectObject);
const ClassInfo ReflectObject::s_info = { "Reflect"_s, &Base::s_info, &reflectObjectTable, nullptr, CREATE_METHOD_TABLE(ReflectObject) };
/* Source for ReflectObject.lut.h
@begin reflectObjectTable
apply JSBuiltin DontEnum|Function 3
construct reflectObjectConstruct DontEnum|Function 2
defineProperty reflectObjectDefineProperty DontEnum|Function 3
deleteProperty JSBuiltin DontEnum|Function 2
get JSBuiltin DontEnum|Function 2
getOwnPropertyDescriptor reflectObjectGetOwnPropertyDescriptor DontEnum|Function 2
getPrototypeOf reflectObjectGetPrototypeOf DontEnum|Function 1 ReflectGetPrototypeOfIntrinsic
has JSBuiltin DontEnum|Function 2
isExtensible reflectObjectIsExtensible DontEnum|Function 1
ownKeys reflectObjectOwnKeys DontEnum|Function 1 ReflectOwnKeysIntrinsic
preventExtensions reflectObjectPreventExtensions DontEnum|Function 1
set reflectObjectSet DontEnum|Function 3
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()));
JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
}
// ------------------------------ Functions --------------------------------
// https://tc39.github.io/ecma262/#sec-reflect.construct
JSC_DEFINE_HOST_FUNCTION(reflectObjectConstruct, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the first argument be a constructor"_s));
auto constructData = JSC::getConstructData(target);
if (constructData.type == CallData::Type::None)
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the first argument be a constructor"_s));
JSValue newTarget = target;
if (callFrame->argumentCount() >= 3) {
newTarget = callFrame->argument(2);
if (!newTarget.isConstructor())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the third argument be a constructor if present"_s));
}
MarkedArgumentBuffer arguments;
JSObject* argumentsObject = jsDynamicCast<JSObject*>(callFrame->argument(1));
if (!argumentsObject)
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the second argument be an object"_s));
forEachInArrayLike(globalObject, argumentsObject, [&] (JSValue value) -> bool {
arguments.append(value);
return true;
});
RETURN_IF_EXCEPTION(scope, (arguments.overflowCheckNotNeeded(), encodedJSValue()));
if (UNLIKELY(arguments.hasOverflowed())) {
throwOutOfMemoryError(globalObject, scope);
return encodedJSValue();
}
RELEASE_AND_RETURN(scope, JSValue::encode(construct(globalObject, target, constructData, arguments, newTarget)));
}
// https://tc39.github.io/ecma262/#sec-reflect.defineproperty
JSC_DEFINE_HOST_FUNCTION(reflectObjectDefineProperty, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.defineProperty requires the first argument be an object"_s));
auto propertyName = callFrame->argument(1).toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
PropertyDescriptor descriptor;
bool success = toPropertyDescriptor(globalObject, callFrame->argument(2), descriptor);
EXCEPTION_ASSERT(!scope.exception() == success);
if (UNLIKELY(!success))
return encodedJSValue();
ASSERT((descriptor.attributes() & PropertyAttribute::Accessor) || (!descriptor.isAccessorDescriptor()));
scope.assertNoException();
// Reflect.defineProperty should not throw an error when the defineOwnProperty operation fails.
bool shouldThrow = false;
JSObject* targetObject = asObject(target);
RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(targetObject->methodTable()->defineOwnProperty(targetObject, globalObject, propertyName, descriptor, shouldThrow))));
}
// https://tc39.github.io/ecma262/#sec-reflect.getownpropertydescriptor
JSC_DEFINE_HOST_FUNCTION(reflectObjectGetOwnPropertyDescriptor, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.getOwnPropertyDescriptor requires the first argument be an object"_s));
auto key = callFrame->argument(1).toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
RELEASE_AND_RETURN(scope, JSValue::encode(objectConstructorGetOwnPropertyDescriptor(globalObject, asObject(target), key)));
}
// https://tc39.github.io/ecma262/#sec-reflect.getprototypeof
JSC_DEFINE_HOST_FUNCTION(reflectObjectGetPrototypeOf, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.getPrototypeOf requires the first argument be an object"_s));
RELEASE_AND_RETURN(scope, JSValue::encode(asObject(target)->getPrototype(vm, globalObject)));
}
// https://tc39.github.io/ecma262/#sec-reflect.isextensible
JSC_DEFINE_HOST_FUNCTION(reflectObjectIsExtensible, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.isExtensible requires the first argument be an object"_s));
bool isExtensible = asObject(target)->isExtensible(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(jsBoolean(isExtensible));
}
// https://tc39.github.io/ecma262/#sec-reflect.ownkeys
JSC_DEFINE_HOST_FUNCTION(reflectObjectOwnKeys, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, ReflectOwnKeysNonObjectArgumentError));
RELEASE_AND_RETURN(scope, JSValue::encode(ownPropertyKeys(globalObject, asObject(target), PropertyNameMode::StringsAndSymbols, DontEnumPropertiesMode::Include)));
}
// https://tc39.github.io/ecma262/#sec-reflect.preventextensions
JSC_DEFINE_HOST_FUNCTION(reflectObjectPreventExtensions, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.preventExtensions requires the first argument be an object"_s));
JSObject* object = asObject(target);
bool result = object->methodTable()->preventExtensions(object, globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(jsBoolean(result));
}
// https://tc39.github.io/ecma262/#sec-reflect.set
JSC_DEFINE_HOST_FUNCTION(reflectObjectSet, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.set requires the first argument be an object"_s));
JSObject* targetObject = asObject(target);
auto propertyName = callFrame->argument(1).toPropertyKey(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
JSValue receiver = target;
if (callFrame->argumentCount() >= 4)
receiver = callFrame->argument(3);
// Do not raise any readonly errors that happen in strict mode.
bool shouldThrowIfCantSet = false;
PutPropertySlot slot(receiver, shouldThrowIfCantSet);
RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(targetObject->methodTable()->put(targetObject, globalObject, propertyName, callFrame->argument(2), slot))));
}
// https://tc39.github.io/ecma262/#sec-reflect.setprototypeof
JSC_DEFINE_HOST_FUNCTION(reflectObjectSetPrototypeOf, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue target = callFrame->argument(0);
if (!target.isObject())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.setPrototypeOf requires the first argument be an object"_s));
JSValue proto = callFrame->argument(1);
if (!proto.isObject() && !proto.isNull())
return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.setPrototypeOf requires the second argument be either an object or null"_s));
JSObject* object = asObject(target);
bool shouldThrowIfCantSet = false;
bool didSetPrototype = object->setPrototype(vm, globalObject, proto, shouldThrowIfCantSet);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(jsBoolean(didSetPrototype));
}
} // namespace JSC
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