localvar.h

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// Copyright (C) 1997-2020 by Pawel Pilarczyk.
//
// This file is part of my research software package. This is free software:
// you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// This software 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this software; see the file "license.txt". If not,
// please, see <https://www.gnu.org/licenses/>.
 
// Started on June 12, 2008. Last revision: June 13, 2008.
 
 
#ifndef _CHOMP_STRUCT_LOCALVAR_H_
#define _CHOMP_STRUCT_LOCALVAR_H_
 
 
namespace chomp {
namespace homology {
 
 
// --------------------------------------------------
// -------------------- LOCALVAR --------------------
// --------------------------------------------------
 
template <class varType>
class local_var
{
public:
        local_var (varType &_variable);
 
        local_var (varType &_variable, const varType &_newValue);
 
        ~local_var ();
 
private:
        varType &var;
 
        const varType value;
 
}; /* class local_var */
 
// --------------------------------------------------
 
template <class varType>
inline local_var<varType>::local_var (varType &_variable):
        var (_variable), value (_variable)
{
        return;
} /* local_var */
 
template <class varType>
inline local_var<varType>::local_var (varType &_variable,
        const varType &_newValue): var (_variable), value (_variable)
{
        _variable = _newValue;
        return;
} /* local_var */
 
template <class varType>
inline local_var<varType>::~local_var ()
{
        var = value;
        return;
} /* ~local_var */
 
 
} // namespace homology
} // namespace chomp
 
#endif // _CHOMP_STRUCT_LOCALVAR_H_