EnsureFinalized.hpp

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
/*
  This file is part of the Open Porous Media project (OPM).
 
  OPM 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 2 of the License, or
  (at your option) any later version.
 
  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
 
  Consult the COPYING file in the top-level source directory of this
  module for the precise wording of the license and the list of
  copyright holders.
*/
#ifndef OPM_MATERIAL_ENSURE_FINALIZED_HPP
#define OPM_MATERIAL_ENSURE_FINALIZED_HPP
 
#include <cassert>
#include <stdexcept>
 
// TODO: move this variable to config.h
#define OPM_CHECK_PARAM_FINALIZED 1
 
#if ! defined(NDEBUG) && OPM_CHECK_PARAM_FINALIZED
#define USE_OPM_CHECK_PARAM_FINALIZED 1
#endif
 
namespace Opm {
 
class EnsureFinalized
{
#if USE_OPM_CHECK_PARAM_FINALIZED
    bool finalized_;
#endif
 
protected:
    EnsureFinalized()
#if USE_OPM_CHECK_PARAM_FINALIZED
        : finalized_( false )
#endif
    {
    }
 
    void check() const
    {
#if USE_OPM_CHECK_PARAM_FINALIZED
        if (!finalized_)
            throw std::runtime_error("Parameter class has not been finalized before usage!");
#endif
    }
 
public:
    void finalize()
    {
#if USE_OPM_CHECK_PARAM_FINALIZED
        finalized_ = true;
#endif
    }
};
 
#undef USE_OPM_CHECK_PARAM_FINALIZED
 
} // namespace Opm
#endif