31 // 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock) |
31 // 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock) |
32 // |
32 // |
33 |
33 |
34 // See http://www.boost.org/libs/concept_check for documentation. |
34 // See http://www.boost.org/libs/concept_check for documentation. |
35 |
35 |
36 #ifndef LEMON_CONCEPT_CHECKS_H |
36 ///\file |
37 #define LEMON_CONCEPT_CHECKS_H |
37 ///\brief Basic utilities for concept checking. |
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38 /// |
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39 ///\todo Are we still using BOOST concept checking utility? |
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40 ///Is the BOOST copyright notice necessary? |
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41 |
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42 #ifndef LEMON_CONCEPT_CHECK_H |
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43 #define LEMON_CONCEPT_CHECK_H |
38 |
44 |
39 namespace lemon { |
45 namespace lemon { |
40 |
46 |
41 /* |
47 /* |
42 "inline" is used for ignore_unused_variable_warning() |
48 "inline" is used for ignore_unused_variable_warning() |
44 overtarget with g++. |
50 overtarget with g++. |
45 */ |
51 */ |
46 |
52 |
47 template <class T> inline void ignore_unused_variable_warning(const T&) { } |
53 template <class T> inline void ignore_unused_variable_warning(const T&) { } |
48 |
54 |
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55 ///\e |
49 template <class Concept> |
56 template <class Concept> |
50 inline void function_requires() |
57 inline void function_requires() |
51 { |
58 { |
52 #if !defined(NDEBUG) |
59 #if !defined(NDEBUG) |
53 void (Concept::*x)() = & Concept::constraints; |
60 void (Concept::*x)() = & Concept::constraints; |
54 ignore_unused_variable_warning(x); |
61 ignore_unused_variable_warning(x); |
55 #endif |
62 #endif |
56 } |
63 } |
57 |
64 |
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65 ///\e |
58 template <typename Concept, typename Type> |
66 template <typename Concept, typename Type> |
59 inline void checkConcept() { |
67 inline void checkConcept() { |
60 #if !defined(NDEBUG) |
68 #if !defined(NDEBUG) |
61 typedef typename Concept::template Constraints<Type> ConceptCheck; |
69 typedef typename Concept::template Constraints<Type> ConceptCheck; |
62 void (ConceptCheck::*x)() = & ConceptCheck::constraints; |
70 void (ConceptCheck::*x)() = & ConceptCheck::constraints; |
63 ignore_unused_variable_warning(x); |
71 ignore_unused_variable_warning(x); |
64 #endif |
72 #endif |
65 } |
73 } |
66 |
74 |
67 #define BOOST_CLASS_REQUIRE(type_var, ns, concept) \ |
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68 typedef void (ns::concept <type_var>::* func##type_var##concept)(); \ |
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69 template <func##type_var##concept Tp1_> \ |
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70 struct concept_checking_##type_var##concept { }; \ |
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71 typedef concept_checking_##type_var##concept< \ |
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72 BOOST_FPTR ns::concept<type_var>::constraints> \ |
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73 concept_checking_typedef_##type_var##concept |
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74 |
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75 #define BOOST_CLASS_REQUIRE2(type_var1, type_var2, ns, concept) \ |
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76 typedef void (ns::concept <type_var1,type_var2>::* \ |
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77 func##type_var1##type_var2##concept)(); \ |
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78 template <func##type_var1##type_var2##concept Tp1_> \ |
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79 struct concept_checking_##type_var1##type_var2##concept { }; \ |
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80 typedef concept_checking_##type_var1##type_var2##concept< \ |
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81 BOOST_FPTR ns::concept<type_var1,type_var2>::constraints> \ |
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82 concept_checking_typedef_##type_var1##type_var2##concept |
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83 |
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84 #define BOOST_CLASS_REQUIRE3(tv1, tv2, tv3, ns, concept) \ |
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85 typedef void (ns::concept <tv1,tv2,tv3>::* \ |
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86 func##tv1##tv2##tv3##concept)(); \ |
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87 template <func##tv1##tv2##tv3##concept Tp1_> \ |
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88 struct concept_checking_##tv1##tv2##tv3##concept { }; \ |
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89 typedef concept_checking_##tv1##tv2##tv3##concept< \ |
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90 BOOST_FPTR ns::concept<tv1,tv2,tv3>::constraints> \ |
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91 concept_checking_typedef_##tv1##tv2##tv3##concept |
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92 |
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93 #define BOOST_CLASS_REQUIRE4(tv1, tv2, tv3, tv4, ns, concept) \ |
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94 typedef void (ns::concept <tv1,tv2,tv3,tv4>::* \ |
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95 func##tv1##tv2##tv3##tv4##concept)(); \ |
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96 template <func##tv1##tv2##tv3##tv4##concept Tp1_> \ |
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97 struct concept_checking_##tv1##tv2##tv3##tv4##concept { }; \ |
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98 typedef concept_checking_##tv1##tv2##tv3##tv4##concept< \ |
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99 BOOST_FPTR ns::concept<tv1,tv2,tv3,tv4>::constraints> \ |
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100 concept_checking_typedef_##tv1##tv2##tv3##tv4##concept |
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101 |
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102 |
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103 } // namespace lemon |
75 } // namespace lemon |
104 |
76 |
105 #endif // LEMON_CONCEPT_CHECKS_H |
77 #endif // LEMON_CONCEPT_CHECK_H |