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https://github.com/SerenityOS/serenity.git
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d1d1f4f251
In hindsight declaring these prematurely wasn't the greatest idea - that just makes any script checking for their existence believe they'll work, and what follows next is a crash of the js or WebContent process. If we omit the declarations, a polyfill can be provided instead. This also affects the test262, which tests these - instead of reporting a bunch of assertion crash errors, we should simply report test failure for 'not a function', which in turn makes it easier to spot any actual bugs causing crashes.
116 lines
3.7 KiB
C++
116 lines
3.7 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/Function.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Promise.h>
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#include <LibJS/Runtime/PromiseConstructor.h>
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#include <LibJS/Runtime/PromiseReaction.h>
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namespace JS {
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PromiseConstructor::PromiseConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.Promise, *global_object.function_prototype())
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{
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}
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void PromiseConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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define_property(vm.names.prototype, global_object.promise_prototype());
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define_property(vm.names.length, Value(1));
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u8 attr = Attribute::Writable | Attribute::Configurable;
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// TODO: Implement these functions below and uncomment this.
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// define_native_function(vm.names.all, all, 1, attr);
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// define_native_function(vm.names.allSettled, all_settled, 1, attr);
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// define_native_function(vm.names.any, any, 1, attr);
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// define_native_function(vm.names.race, race, 1, attr);
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define_native_function(vm.names.reject, reject, 1, attr);
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define_native_function(vm.names.resolve, resolve, 1, attr);
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}
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Value PromiseConstructor::call()
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{
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auto& vm = this->vm();
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vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.Promise);
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return {};
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}
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// 27.2.3.1 Promise, https://tc39.es/ecma262/#sec-promise-executor
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Value PromiseConstructor::construct(Function&)
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{
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auto& vm = this->vm();
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auto executor = vm.argument(0);
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if (!executor.is_function()) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::PromiseExecutorNotAFunction);
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return {};
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}
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auto* promise = Promise::create(global_object());
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auto [resolve_function, reject_function] = promise->create_resolving_functions();
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auto completion_value = vm.call(executor.as_function(), js_undefined(), &resolve_function, &reject_function);
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if (vm.exception()) {
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vm.clear_exception();
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vm.stop_unwind();
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[[maybe_unused]] auto result = vm.call(reject_function, js_undefined(), completion_value);
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}
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return promise;
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}
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// 27.2.4.1 Promise.all, https://tc39.es/ecma262/#sec-promise.all
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all)
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{
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TODO();
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}
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// 27.2.4.2 Promise.allSettled, https://tc39.es/ecma262/#sec-promise.allsettled
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all_settled)
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{
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TODO();
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}
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// 27.2.4.3 Promise.any, https://tc39.es/ecma262/#sec-promise.any
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::any)
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{
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TODO();
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}
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// 27.2.4.5 Promise.race, https://tc39.es/ecma262/#sec-promise.race
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::race)
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{
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TODO();
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}
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// 27.2.4.6 Promise.reject, https://tc39.es/ecma262/#sec-promise.reject
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::reject)
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{
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auto* constructor = vm.this_value(global_object).to_object(global_object);
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if (!constructor)
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return {};
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auto promise_capability = new_promise_capability(global_object, constructor);
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if (vm.exception())
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return {};
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auto reason = vm.argument(0);
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[[maybe_unused]] auto result = vm.call(*promise_capability.reject, js_undefined(), reason);
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return promise_capability.promise;
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}
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// 27.2.4.7 Promise.resolve, https://tc39.es/ecma262/#sec-promise.resolve
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JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::resolve)
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{
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auto* constructor = vm.this_value(global_object).to_object(global_object);
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if (!constructor)
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return {};
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auto value = vm.argument(0);
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return promise_resolve(global_object, *constructor, value);
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}
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}
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