58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2012 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_RAII_HPP
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#define __UTIL_RAII_HPP
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#include "preprocessor.hpp"
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/// Defines a translation-unit-unique variable useful for unnamed scoped variables
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#define raii PASTE(__unique_, __COUNTER__)
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namespace util {
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/// Increments a counter for the lifetime of the object
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template <typename T>
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struct scoped_counter {
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scoped_counter (T &_counter):
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counter (_counter)
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{ ++counter; }
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~scoped_counter ()
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{ --counter; }
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T &counter;
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};
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/// Executes a function upon object destruction
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template <typename T>
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struct scoped_function {
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scoped_function (T &&_func):
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func (std::move (_func))
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{ ; }
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~scoped_function ()
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{ func (); }
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T func;
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};
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}
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#endif
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