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/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
*
* 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
#if (_LIBCPP_VERSION >= 14000) && !defined(_LIBCPP_HAS_NO_CXX20_COROUTINES)
#import <coroutine>
#else
// FIXME: Remove this once all supported toolchains have non-experimental coroutine support.
#import <experimental/coroutine>
namespace std {
using std::experimental::coroutine_handle;
using std::experimental::suspend_never;
using std::experimental::suspend_always;
}
#endif
namespace TestWebKitAPI {
template<typename PromiseType>
struct CoroutineHandle {
CoroutineHandle(std::coroutine_handle<PromiseType>&& handle)
: handle(WTFMove(handle)) { }
CoroutineHandle(const CoroutineHandle&) = delete;
CoroutineHandle(CoroutineHandle&& other)
: handle(std::exchange(other.handle, nullptr)) { }
~CoroutineHandle()
{
if (handle)
handle.destroy();
}
std::coroutine_handle<PromiseType> handle;
};
struct Task {
struct promise_type {
Task get_return_object() { return { std::coroutine_handle<promise_type>::from_promise(*this) }; }
std::suspend_never initial_suspend() { return { }; }
std::suspend_always final_suspend() noexcept { return { }; }
void unhandled_exception() { }
void return_void() { }
};
CoroutineHandle<promise_type> handle;
};
}
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