Line data    Source code

       1              : /*
       2              :  * SPDX-License-Identifier: GPL-3.0-only
       3              :  * MuseScore-CLA-applies
       4              :  *
       5              :  * MuseScore Studio
       6              :  * Music Composition & Notation
       7              :  *
       8              :  * Copyright (C) 2021 MuseScore Limited and others
       9              :  *
      10              :  * This program is free software: you can redistribute it and/or modify
      11              :  * it under the terms of the GNU General Public License version 3 as
      12              :  * published by the Free Software Foundation.
      13              :  *
      14              :  * This program is distributed in the hope that it will be useful,
      15              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17              :  * GNU General Public License for more details.
      18              :  *
      19              :  * You should have received a copy of the GNU General Public License
      20              :  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
      21              :  */
      22              : #ifndef MUSE_GLOBAL_DEFER_H
      23              : #define MUSE_GLOBAL_DEFER_H
      24              : 
      25              : #include <functional>
      26              : 
      27              : namespace muse {
      28              : struct Defer
      29              : {
      30              :     template<class F>
      31         7967 :     Defer(F f)
      32         7967 :         : m_f(f) {}
      33              : 
      34         7967 :     ~Defer()
      35              :     {
      36         7967 :         if (m_f) {
      37         7967 :             m_f();
      38              :         }
      39         7967 :     }
      40              : 
      41              :     std::function<void()> m_f;
      42              : };
      43              : }
      44              : 
      45              : #define CONCAT_IMPL(x, y) x##y
      46              : #define MACRO_CONCAT(x, y) CONCAT_IMPL(x, y)
      47              : 
      48              : #define DEFER const ::muse::Defer MACRO_CONCAT(defer_, __LINE__) = [&]()
      49              : 
      50              : #endif // MUSE_GLOBAL_DEFER_H