klao@946: // -*- C++ -*-
klao@946: // Modified for use in LEMON.
klao@946: // We should really consider using Boost...
klao@946: 
klao@946: 
klao@946: //
klao@946: // (C) Copyright Jeremy Siek 2000.
klao@946: // Distributed under the Boost Software License, Version 1.0. (See
klao@946: // accompanying file LICENSE_1_0.txt or copy at
klao@946: // http://www.boost.org/LICENSE_1_0.txt)
klao@946: //
klao@946: // Revision History:
klao@946: //   05 May   2001: Workarounds for HP aCC from Thomas Matelich. (Jeremy Siek)
klao@946: //   02 April 2001: Removed limits header altogether. (Jeremy Siek)
klao@946: //   01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock)
klao@946: //
klao@946: 
klao@946: // See http://www.boost.org/libs/concept_check for documentation.
klao@946: 
klao@946: #ifndef LEMON_BOOST_CONCEPT_CHECKS_HPP
klao@946: #define LEMON_BOOST_CONCEPT_CHECKS_HPP
klao@946: 
klao@946: namespace lemon {
klao@946: 
klao@946:   /*
klao@946:     "inline" is used for ignore_unused_variable_warning()
klao@946:     and function_requires() to make sure there is no
alpar@986:     overtarget with g++.
klao@946:   */
klao@946: 
klao@946:   template <class T> inline void ignore_unused_variable_warning(const T&) { }
klao@946: 
klao@946:   template <class Concept>
klao@946:   inline void function_requires()
klao@946:   {
klao@946: #if !defined(NDEBUG)
klao@946:     void (Concept::*x)() = & Concept::constraints;
klao@946:     ignore_unused_variable_warning(x);
klao@946: #endif
klao@946:   }
klao@946: 
klao@946: #define BOOST_CLASS_REQUIRE(type_var, ns, concept) \
klao@946:   typedef void (ns::concept <type_var>::* func##type_var##concept)(); \
klao@946:   template <func##type_var##concept Tp1_> \
klao@946:   struct concept_checking_##type_var##concept { }; \
klao@946:   typedef concept_checking_##type_var##concept< \
klao@946:     BOOST_FPTR ns::concept<type_var>::constraints> \
klao@946:     concept_checking_typedef_##type_var##concept
klao@946: 
klao@946: #define BOOST_CLASS_REQUIRE2(type_var1, type_var2, ns, concept) \
klao@946:   typedef void (ns::concept <type_var1,type_var2>::* \
klao@946:      func##type_var1##type_var2##concept)(); \
klao@946:   template <func##type_var1##type_var2##concept Tp1_> \
klao@946:   struct concept_checking_##type_var1##type_var2##concept { }; \
klao@946:   typedef concept_checking_##type_var1##type_var2##concept< \
klao@946:     BOOST_FPTR ns::concept<type_var1,type_var2>::constraints> \
klao@946:     concept_checking_typedef_##type_var1##type_var2##concept
klao@946: 
klao@946: #define BOOST_CLASS_REQUIRE3(tv1, tv2, tv3, ns, concept) \
klao@946:   typedef void (ns::concept <tv1,tv2,tv3>::* \
klao@946:      func##tv1##tv2##tv3##concept)(); \
klao@946:   template <func##tv1##tv2##tv3##concept Tp1_> \
klao@946:   struct concept_checking_##tv1##tv2##tv3##concept { }; \
klao@946:   typedef concept_checking_##tv1##tv2##tv3##concept< \
klao@946:     BOOST_FPTR ns::concept<tv1,tv2,tv3>::constraints> \
klao@946:     concept_checking_typedef_##tv1##tv2##tv3##concept
klao@946: 
klao@946: #define BOOST_CLASS_REQUIRE4(tv1, tv2, tv3, tv4, ns, concept) \
klao@946:   typedef void (ns::concept <tv1,tv2,tv3,tv4>::* \
klao@946:      func##tv1##tv2##tv3##tv4##concept)(); \
klao@946:   template <func##tv1##tv2##tv3##tv4##concept Tp1_> \
klao@946:   struct concept_checking_##tv1##tv2##tv3##tv4##concept { }; \
klao@946:   typedef concept_checking_##tv1##tv2##tv3##tv4##concept< \
klao@946:     BOOST_FPTR ns::concept<tv1,tv2,tv3,tv4>::constraints> \
klao@946:     concept_checking_typedef_##tv1##tv2##tv3##tv4##concept
klao@946: 
klao@946: 
klao@946: } // namespace lemon
klao@946: 
klao@946: #endif // LEMON_BOOST_CONCEPT_CHECKS_HPP