ScopeGuard.h

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#ifndef OSMSCOUT_SCOPEGUARD_H
#define OSMSCOUT_SCOPEGUARD_H
 
/*
  This source is part of the libosmscout library
  Copyright (C) 2021  Lukas Karas
 
  This library 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 2.1 of the License, or (at your option) any later version.
 
  This library 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 this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/
 
namespace osmscout {

template <typename CB>
class ScopeGuard
{
private:
  CB cb;
  static_assert(std::is_nothrow_invocable_v<CB>, "Callback must be a nothrow (noexcept) callable");
public:
  explicit ScopeGuard(CB cb) noexcept(noexcept(std::move(cb))): cb{std::move(cb)}
  {}
 
  ScopeGuard(const ScopeGuard &) = delete;
  ScopeGuard(ScopeGuard && other) = delete;
  ScopeGuard& operator=(const ScopeGuard&) = delete;
  ScopeGuard& operator=(ScopeGuard&&) = delete;
 
  ~ScopeGuard() noexcept {
    cb();
  }
};
}
 
#endif // OSMSCOUT_SCOPEGUARD_H