Location: LEMON/LEMON-official/lemon/concept_check.h

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deba@inf.elte.hu
Digraph and Graph concept should be conform to the IDable... concepts
/* -*- C++ -*-
*
* This file is a part of LEMON, a generic C++ optimization library
*
* Copyright (C) 2003-2008
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
* (Egervary Research Group on Combinatorial Optimization, EGRES).
*
* Permission to use, modify and distribute this software is granted
* provided that this copyright notice appears in all copies. For
* precise terms see the accompanying LICENSE file.
*
* This software is provided "AS IS" with no warranty of any kind,
* express or implied, and with no claim as to its suitability for any
* purpose.
*
*/
// This file contains a modified version of the concept checking
// utility from BOOST.
// See the appropriate copyright notice below.
// (C) Copyright Jeremy Siek 2000.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// Revision History:
// 05 May 2001: Workarounds for HP aCC from Thomas Matelich. (Jeremy Siek)
// 02 April 2001: Removed limits header altogether. (Jeremy Siek)
// 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock)
//
// See http://www.boost.org/libs/concept_check for documentation.
///\file
///\brief Basic utilities for concept checking.
///
///\todo Are we still using BOOST concept checking utility?
///Is the BOOST copyright notice necessary?
#ifndef LEMON_CONCEPT_CHECK_H
#define LEMON_CONCEPT_CHECK_H
namespace lemon {
/*
"inline" is used for ignore_unused_variable_warning()
and function_requires() to make sure there is no
overtarget with g++.
*/
template <class T> inline void ignore_unused_variable_warning(const T&) { }
///\e
template <class Concept>
inline void function_requires()
{
#if !defined(NDEBUG)
void (Concept::*x)() = & Concept::constraints;
ignore_unused_variable_warning(x);
#endif
}
///\e
template <typename Concept, typename Type>
inline void checkConcept() {
#if !defined(NDEBUG)
typedef typename Concept::template Constraints<Type> ConceptCheck;
void (ConceptCheck::*x)() = & ConceptCheck::constraints;
ignore_unused_variable_warning(x);
#endif
}
} // namespace lemon
#endif // LEMON_CONCEPT_CHECK_H