/* * Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>. * * 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. AND ITS CONTRIBUTORS ``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 ITS 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. */ #pragma once #include "IDLTypes.h" #include "JSDOMConvertBase.h" #include "JSDOMPromise.h" namespace WebCore { template<typename T> struct Converter<IDLPromise<T>> : DefaultConverter<IDLPromise<T>> { using ReturnType = RefPtr<DOMPromise>; // https://heycam.github.io/webidl/#es-promise template<typename ExceptionThrower = DefaultExceptionThrower> static ReturnType convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, ExceptionThrower&& exceptionThrower = ExceptionThrower()) { JSC::VM& vm = JSC::getVM(&lexicalGlobalObject); auto scope = DECLARE_THROW_SCOPE(vm); auto* globalObject = JSC::jsDynamicCast<JSDOMGlobalObject*>(vm, &lexicalGlobalObject); if (!globalObject) return nullptr; // 1. Let resolve be the original value of %Promise%.resolve. // 2. Let promise be the result of calling resolve with %Promise% as the this value and V as the single argument value. auto* promise = JSC::JSPromise::resolvedPromise(globalObject, value); if (scope.exception()) { exceptionThrower(lexicalGlobalObject, scope); return nullptr; } ASSERT(promise); // 3. Return the IDL promise type value that is a reference to the same object as promise. return DOMPromise::create(*globalObject, *promise); } }; template<typename T> struct JSConverter<IDLPromise<T>> { static constexpr bool needsState = true; static constexpr bool needsGlobalObject = true; static JSC::JSValue convert(JSC::JSGlobalObject&, JSDOMGlobalObject&, DOMPromise& promise) { return promise.promise(); } template<template<typename> class U> static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, JSDOMGlobalObject& globalObject, U<T>& promiseProxy) { return promiseProxy.promise(lexicalGlobalObject, globalObject); } }; } // namespace WebCore