mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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289 lines
13 KiB
C++
289 lines
13 KiB
C++
/*
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* Copyright (C) 2015-2017 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "ReflectObject.h"
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#include "JSCInlines.h"
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#include "ObjectConstructor.h"
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namespace JSC {
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectConstruct);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectDefineProperty);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectGet);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectGetOwnPropertyDescriptor);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectGetPrototypeOf);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectIsExtensible);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectOwnKeys);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectPreventExtensions);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectSet);
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static JSC_DECLARE_HOST_FUNCTION(reflectObjectSetPrototypeOf);
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}
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#include "ReflectObject.lut.h"
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namespace JSC {
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STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ReflectObject);
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const ClassInfo ReflectObject::s_info = { "Reflect", &Base::s_info, &reflectObjectTable, nullptr, CREATE_METHOD_TABLE(ReflectObject) };
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/* Source for ReflectObject.lut.h
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@begin reflectObjectTable
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apply JSBuiltin DontEnum|Function 3
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construct reflectObjectConstruct DontEnum|Function 2
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defineProperty reflectObjectDefineProperty DontEnum|Function 3
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deleteProperty JSBuiltin DontEnum|Function 2
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get reflectObjectGet DontEnum|Function 2
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getOwnPropertyDescriptor reflectObjectGetOwnPropertyDescriptor DontEnum|Function 2
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getPrototypeOf reflectObjectGetPrototypeOf DontEnum|Function 1 ReflectGetPrototypeOfIntrinsic
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has JSBuiltin DontEnum|Function 2
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isExtensible reflectObjectIsExtensible DontEnum|Function 1
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ownKeys reflectObjectOwnKeys DontEnum|Function 1
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preventExtensions reflectObjectPreventExtensions DontEnum|Function 1
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set reflectObjectSet DontEnum|Function 3
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setPrototypeOf reflectObjectSetPrototypeOf DontEnum|Function 2
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@end
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*/
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ReflectObject::ReflectObject(VM& vm, Structure* structure)
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: JSNonFinalObject(vm, structure)
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{
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}
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void ReflectObject::finishCreation(VM& vm, JSGlobalObject*)
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{
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Base::finishCreation(vm);
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ASSERT(inherits(vm, info()));
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JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
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}
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// ------------------------------ Functions --------------------------------
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// https://tc39.github.io/ecma262/#sec-reflect.construct
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JSC_DEFINE_HOST_FUNCTION(reflectObjectConstruct, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the first argument be a constructor"_s));
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auto constructData = getConstructData(vm, target);
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if (constructData.type == CallData::Type::None)
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the first argument be a constructor"_s));
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JSValue newTarget = target;
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if (callFrame->argumentCount() >= 3) {
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newTarget = callFrame->argument(2);
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if (!newTarget.isConstructor(vm))
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the third argument be a constructor if present"_s));
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}
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MarkedArgumentBuffer arguments;
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JSObject* argumentsObject = jsDynamicCast<JSObject*>(vm, callFrame->argument(1));
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if (!argumentsObject)
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.construct requires the second argument be an object"_s));
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createListFromArrayLike(globalObject, argumentsObject, RuntimeTypeMaskAllTypes, "This error must not be raised"_s, "This error must not be raised"_s, [&] (JSValue value, RuntimeType) -> bool {
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arguments.append(value);
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return false;
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});
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RETURN_IF_EXCEPTION(scope, (arguments.overflowCheckNotNeeded(), encodedJSValue()));
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if (UNLIKELY(arguments.hasOverflowed())) {
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throwOutOfMemoryError(globalObject, scope);
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return encodedJSValue();
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}
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RELEASE_AND_RETURN(scope, JSValue::encode(construct(globalObject, target, constructData, arguments, newTarget)));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.defineproperty
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JSC_DEFINE_HOST_FUNCTION(reflectObjectDefineProperty, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.defineProperty requires the first argument be an object"_s));
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auto propertyName = callFrame->argument(1).toPropertyKey(globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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PropertyDescriptor descriptor;
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bool success = toPropertyDescriptor(globalObject, callFrame->argument(2), descriptor);
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EXCEPTION_ASSERT(!scope.exception() == success);
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if (UNLIKELY(!success))
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return encodedJSValue();
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ASSERT((descriptor.attributes() & PropertyAttribute::Accessor) || (!descriptor.isAccessorDescriptor()));
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scope.assertNoException();
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// Reflect.defineProperty should not throw an error when the defineOwnProperty operation fails.
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bool shouldThrow = false;
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JSObject* targetObject = asObject(target);
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RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(targetObject->methodTable(vm)->defineOwnProperty(targetObject, globalObject, propertyName, descriptor, shouldThrow))));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.get
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JSC_DEFINE_HOST_FUNCTION(reflectObjectGet, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.get requires the first argument be an object"_s));
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const Identifier propertyName = callFrame->argument(1).toPropertyKey(globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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JSValue receiver = target;
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if (callFrame->argumentCount() >= 3)
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receiver = callFrame->argument(2);
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PropertySlot slot(receiver, PropertySlot::InternalMethodType::Get);
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RELEASE_AND_RETURN(scope, JSValue::encode(target.get(globalObject, propertyName, slot)));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.getownpropertydescriptor
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JSC_DEFINE_HOST_FUNCTION(reflectObjectGetOwnPropertyDescriptor, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.getOwnPropertyDescriptor requires the first argument be an object"_s));
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auto key = callFrame->argument(1).toPropertyKey(globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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RELEASE_AND_RETURN(scope, JSValue::encode(objectConstructorGetOwnPropertyDescriptor(globalObject, asObject(target), key)));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.getprototypeof
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JSC_DEFINE_HOST_FUNCTION(reflectObjectGetPrototypeOf, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.getPrototypeOf requires the first argument be an object"_s));
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RELEASE_AND_RETURN(scope, JSValue::encode(asObject(target)->getPrototype(vm, globalObject)));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.isextensible
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JSC_DEFINE_HOST_FUNCTION(reflectObjectIsExtensible, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.isExtensible requires the first argument be an object"_s));
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bool isExtensible = asObject(target)->isExtensible(globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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return JSValue::encode(jsBoolean(isExtensible));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.ownkeys
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JSC_DEFINE_HOST_FUNCTION(reflectObjectOwnKeys, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.ownKeys requires the first argument be an object"_s));
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RELEASE_AND_RETURN(scope, JSValue::encode(ownPropertyKeys(globalObject, jsCast<JSObject*>(target), PropertyNameMode::StringsAndSymbols, DontEnumPropertiesMode::Include, WTF::nullopt)));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.preventextensions
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JSC_DEFINE_HOST_FUNCTION(reflectObjectPreventExtensions, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.preventExtensions requires the first argument be an object"_s));
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JSObject* object = asObject(target);
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bool result = object->methodTable(vm)->preventExtensions(object, globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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return JSValue::encode(jsBoolean(result));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.set
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JSC_DEFINE_HOST_FUNCTION(reflectObjectSet, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.set requires the first argument be an object"_s));
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JSObject* targetObject = asObject(target);
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auto propertyName = callFrame->argument(1).toPropertyKey(globalObject);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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JSValue receiver = target;
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if (callFrame->argumentCount() >= 4)
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receiver = callFrame->argument(3);
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// Do not raise any readonly errors that happen in strict mode.
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bool shouldThrowIfCantSet = false;
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PutPropertySlot slot(receiver, shouldThrowIfCantSet);
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RELEASE_AND_RETURN(scope, JSValue::encode(jsBoolean(targetObject->methodTable(vm)->put(targetObject, globalObject, propertyName, callFrame->argument(2), slot))));
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}
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// https://tc39.github.io/ecma262/#sec-reflect.setprototypeof
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JSC_DEFINE_HOST_FUNCTION(reflectObjectSetPrototypeOf, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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JSValue target = callFrame->argument(0);
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if (!target.isObject())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.setPrototypeOf requires the first argument be an object"_s));
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JSValue proto = callFrame->argument(1);
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if (!proto.isObject() && !proto.isNull())
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return JSValue::encode(throwTypeError(globalObject, scope, "Reflect.setPrototypeOf requires the second argument be either an object or null"_s));
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JSObject* object = asObject(target);
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bool shouldThrowIfCantSet = false;
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bool didSetPrototype = object->setPrototype(vm, globalObject, proto, shouldThrowIfCantSet);
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RETURN_IF_EXCEPTION(scope, encodedJSValue());
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return JSValue::encode(jsBoolean(didSetPrototype));
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}
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} // namespace JSC
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