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LibJS: Implement async functions as generator functions in BC mode

This applies a simple transformation, and adds a simple wrapper that
translates the generator interface to the async function interface.
This commit is contained in:
Ali Mohammad Pur 2021-11-11 00:46:07 +03:30 committed by Linus Groh
parent c604e95993
commit 3b0bf05fa5
14 changed files with 192 additions and 43 deletions

View file

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/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Bytecode/Interpreter.h>
#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
#include <LibJS/Runtime/GeneratorObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Promise.h>
namespace JS {
class AsyncFunctionDriverWrapper final : public Promise {
JS_OBJECT(AsyncFunctionDriverWrapper, Promise);
public:
static ThrowCompletionOr<Value> create(GlobalObject&, GeneratorObject*);
explicit AsyncFunctionDriverWrapper(GlobalObject&, GeneratorObject*);
virtual ~AsyncFunctionDriverWrapper() override;
void visit_edges(Cell::Visitor&) override;
ThrowCompletionOr<Value> react_to_async_task_completion(VM&, GlobalObject&, Value, bool is_successful);
private:
GeneratorObject* m_generator_object { nullptr };
NativeFunction* m_on_fulfillment { nullptr };
NativeFunction* m_on_rejection { nullptr };
};
}