TarsCloud_TarsCpp/servant/promise/bind.h
2021-09-26 10:33:30 +08:00

51 lines
1.8 KiB
C++

/**
* Tencent is pleased to support the open source community by making Tars available.
*
* Copyright (C) 2016THL A29 Limited, a Tencent company. All rights reserved.
*
* Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*
* Unless required by applicable law or agreed to in writing, software distributed
* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
#ifndef _TARS_BIND_H_
#define _TARS_BIND_H_
#include "promise/bind_internal.h"
#include "promise/callback.h"
namespace tars {
template <typename Functor, typename... Args>
struct MakeUnboundRunTypeImpl {
using Type = typename bind::BindState<
typename bind::FunctorTraits<Functor>::RunnableType,
typename bind::FunctorTraits<Functor>::RunType,
Args...>::UnboundRunType;
};
template <typename Functor, typename... Args>
using MakeUnboundRunType = typename MakeUnboundRunTypeImpl<Functor, Args...>::Type;
template <typename Functor, typename... Args>
Callback<MakeUnboundRunType<Functor, Args...> > Bind(Functor f, Args&&... args)
{
using RunnableType = typename bind::FunctorTraits<Functor>::RunnableType;
using RunType = typename bind::FunctorTraits<Functor>::RunType;
using BindState = bind::BindState<RunnableType, RunType, Args...>;
return Callback<typename BindState::UnboundRunType>(
new BindState(bind::MakeRunnable(f), std::forward<Args>(args)...));
}
} // end namespace tars
#endif