COIN-OR::LEMON - Graph Library

source: lemon-1.2/lemon/concept_check.h @ 863:a93f1a27d831

Last change on this file since 863:a93f1a27d831 was 440:88ed40ad0d4f, checked in by Alpar Juttner <alpar@…>, 11 years ago

Happy New Year again

  • update the copyright headers + run the source unifier
File size: 1.6 KB
Line 
1/* -*- mode: C++; indent-tabs-mode: nil; -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library.
4 *
5 * Copyright (C) 2003-2009
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
8 *
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
12 *
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
15 * purpose.
16 *
17 */
18
19// The contents of this file was inspired by the concept checking
20// utility of the BOOST library (http://www.boost.org).
21
22///\file
23///\brief Basic utilities for concept checking.
24///
25
26#ifndef LEMON_CONCEPT_CHECK_H
27#define LEMON_CONCEPT_CHECK_H
28
29namespace lemon {
30
31  /*
32    "inline" is used for ignore_unused_variable_warning()
33    and function_requires() to make sure there is no
34    overtarget with g++.
35  */
36
37  template <class T> inline void ignore_unused_variable_warning(const T&) { }
38
39  ///\e
40  template <class Concept>
41  inline void function_requires()
42  {
43#if !defined(NDEBUG)
44    void (Concept::*x)() = & Concept::constraints;
45    ignore_unused_variable_warning(x);
46#endif
47  }
48
49  ///\e
50  template <typename Concept, typename Type>
51  inline void checkConcept() {
52#if !defined(NDEBUG)
53    typedef typename Concept::template Constraints<Type> ConceptCheck;
54    void (ConceptCheck::*x)() = & ConceptCheck::constraints;
55    ignore_unused_variable_warning(x);
56#endif
57  }
58
59} // namespace lemon
60
61#endif // LEMON_CONCEPT_CHECK_H
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