r53:afb5325d6211
Wed, 09 Jan 2008 00:37:22
[Not Reviewed]
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// 02 April 2001: Removed limits header altogether. (Jeremy Siek) |
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// 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock) |
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// |
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// See http://www.boost.org/libs/concept_check for documentation. |
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#ifndef LEMON_CONCEPT_CHECKS_H |
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#define LEMON_CONCEPT_CHECKS_H |
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///\file |
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///\brief Basic utilities for concept checking. |
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/// |
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///\todo Are we still using BOOST concept checking utility? |
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///Is the BOOST copyright notice necessary? |
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#ifndef LEMON_CONCEPT_CHECK_H |
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#define LEMON_CONCEPT_CHECK_H |
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namespace lemon {
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/* |
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"inline" is used for ignore_unused_variable_warning() |
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and function_requires() to make sure there is no |
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overtarget with g++. |
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*/ |
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template <class T> inline void ignore_unused_variable_warning(const T&) { }
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///\e |
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template <class Concept> |
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inline void function_requires() |
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{
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#if !defined(NDEBUG) |
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void (Concept::*x)() = & Concept::constraints; |
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ignore_unused_variable_warning(x); |
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#endif |
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} |
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///\e |
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template <typename Concept, typename Type> |
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inline void checkConcept() {
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#if !defined(NDEBUG) |
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typedef typename Concept::template Constraints<Type> ConceptCheck; |
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void (ConceptCheck::*x)() = & ConceptCheck::constraints; |
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ignore_unused_variable_warning(x); |
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#endif |
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} |
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#define BOOST_CLASS_REQUIRE(type_var, ns, concept) \ |
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typedef void (ns::concept <type_var>::* func##type_var##concept)(); \ |
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template <func##type_var##concept Tp1_> \ |
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struct concept_checking_##type_var##concept { }; \
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typedef concept_checking_##type_var##concept< \ |
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BOOST_FPTR ns::concept<type_var>::constraints> \ |
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concept_checking_typedef_##type_var##concept |
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#define BOOST_CLASS_REQUIRE2(type_var1, type_var2, ns, concept) \ |
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typedef void (ns::concept <type_var1,type_var2>::* \ |
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func##type_var1##type_var2##concept)(); \ |
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template <func##type_var1##type_var2##concept Tp1_> \ |
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struct concept_checking_##type_var1##type_var2##concept { }; \
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typedef concept_checking_##type_var1##type_var2##concept< \ |
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BOOST_FPTR ns::concept<type_var1,type_var2>::constraints> \ |
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concept_checking_typedef_##type_var1##type_var2##concept |
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#define BOOST_CLASS_REQUIRE3(tv1, tv2, tv3, ns, concept) \ |
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typedef void (ns::concept <tv1,tv2,tv3>::* \ |
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func##tv1##tv2##tv3##concept)(); \ |
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template <func##tv1##tv2##tv3##concept Tp1_> \ |
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struct concept_checking_##tv1##tv2##tv3##concept { }; \
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typedef concept_checking_##tv1##tv2##tv3##concept< \ |
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BOOST_FPTR ns::concept<tv1,tv2,tv3>::constraints> \ |
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concept_checking_typedef_##tv1##tv2##tv3##concept |
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#define BOOST_CLASS_REQUIRE4(tv1, tv2, tv3, tv4, ns, concept) \ |
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typedef void (ns::concept <tv1,tv2,tv3,tv4>::* \ |
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func##tv1##tv2##tv3##tv4##concept)(); \ |
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template <func##tv1##tv2##tv3##tv4##concept Tp1_> \ |
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struct concept_checking_##tv1##tv2##tv3##tv4##concept { }; \
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typedef concept_checking_##tv1##tv2##tv3##tv4##concept< \ |
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BOOST_FPTR ns::concept<tv1,tv2,tv3,tv4>::constraints> \ |
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concept_checking_typedef_##tv1##tv2##tv3##tv4##concept |
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} // namespace lemon |
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#endif // |
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#endif // LEMON_CONCEPT_CHECK_H |
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