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/*
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Variant.h>
#include <LibJS/Runtime/ExecutionContext.h>
#include <LibJS/Runtime/Object.h>
namespace JS {
// 27.6.2 Properties of AsyncGenerator Instances, https://tc39.es/ecma262/#sec-properties-of-asyncgenerator-intances
class AsyncGenerator final : public Object {
JS_OBJECT(AsyncGenerator, Object);
public:
enum class State {
SuspendedStart,
SuspendedYield,
Executing,
AwaitingReturn,
Completed,
};
virtual ~AsyncGenerator() override = default;
private:
explicit AsyncGenerator(Object& prototype);
virtual void visit_edges(Cell::Visitor&) override;
// At the time of constructing an AsyncGenerator, we still need to point to an
// execution context on the stack, but later need to 'adopt' it.
using ExecutionContextVariant = Variant<ExecutionContext, ExecutionContext*, Empty>;
Optional<State> m_async_generator_state; // [[AsyncGeneratorState]]
ExecutionContextVariant m_async_generator_context; // [[AsyncGeneratorContext]]
Vector<AsyncGeneratorRequest> m_async_generator_queue; // [[AsyncGeneratorQueue]]
Optional<DeprecatedString> m_generator_brand; // [[GeneratorBrand]]
};
}
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