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/*
* Copyright (C) 2022 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2022 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-common-lib
* Created on: 29 июн. 2022 г.
*
* lsp-common-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-common-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-common-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_COMMON_FINALLY_H_
#define LSP_PLUG_IN_COMMON_FINALLY_H_
namespace lsp
{
template <class T>
class FinallyExecutor
{
private:
T sActor;
public:
inline FinallyExecutor(T && actor): sActor(actor) {}
inline FinallyExecutor(T & actor) : sActor(actor) {}
~FinallyExecutor() { sActor(); }
};
struct FinallyExecutorInit
{
template <class T>
inline FinallyExecutor<T> operator + (T & actor)
{
return FinallyExecutor<T>(actor);
}
template <class T>
inline FinallyExecutor<T> operator + (T && actor)
{
return FinallyExecutor<T>(actor);
}
};
#define lsp_impl_finally2(id, prefix) prefix ## id ## __
#define lsp_impl_finally1(id, prefix) lsp_impl_finally2(id, prefix)
#define lsp_impl_finally0(id) \
auto lsp_impl_finally1(id, lsp_finally_function) = FinallyExecutorInit{} + [&]() -> void
#define lsp_finally lsp_impl_finally0(__COUNTER__)
} /* namespace lsp */
#endif /* LSP_PLUG_IN_COMMON_FINALLY_H_ */
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