| // Boost.Bimap |
| // |
| // Copyright (c) 2006-2007 Matias Capeletto |
| // |
| // 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) |
| |
| /// \file detail/modifier_adaptor.hpp |
| /// \brief A binary to unary functor relation modifier adaptor. |
| |
| #ifndef BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP |
| #define BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER>=1200) |
| #pragma once |
| #endif |
| |
| #include <boost/config.hpp> |
| |
| #include <functional> |
| |
| namespace boost { |
| namespace bimaps { |
| namespace detail { |
| |
| /// \brief A binary to unary functor relation modifier adaptor. |
| |
| template |
| < |
| class Modifier, |
| class NewArgument, |
| class FirstExtractor, |
| class SecondExtractor |
| > |
| struct relation_modifier_adaptor : |
| public std::unary_function<NewArgument,bool>, |
| Modifier, |
| FirstExtractor, |
| SecondExtractor |
| { |
| relation_modifier_adaptor( const Modifier & m ) : Modifier(m) {} |
| relation_modifier_adaptor( const Modifier & m, |
| const FirstExtractor & fe, |
| const SecondExtractor & se ) : |
| Modifier(m), FirstExtractor(fe), SecondExtractor(se) {} |
| |
| void operator()( NewArgument & x ) const |
| { |
| Modifier::operator()( |
| FirstExtractor ::operator()( x ), |
| SecondExtractor::operator()( x ) |
| ); |
| } |
| }; |
| |
| /// \brief A simple unary modifier adaptor. |
| // This modifier is equivalent to bind( Modifier, bind( Extractor, _1 ) ) |
| // It may be a good idea to start using Boost.Bind instead of it. |
| |
| template |
| < |
| class Modifier, |
| class NewArgument, |
| class Extractor |
| > |
| struct unary_modifier_adaptor : |
| public std::unary_function<NewArgument,bool>, |
| Modifier, |
| Extractor |
| { |
| unary_modifier_adaptor( const Modifier & m ) : Modifier(m) {} |
| unary_modifier_adaptor( const Modifier & m, |
| const Extractor & fe) : |
| Modifier(m), Extractor(fe) {} |
| |
| void operator()( NewArgument & x ) const |
| { |
| Modifier::operator()( Extractor::operator()( x ) ); |
| } |
| }; |
| |
| |
| } // namespace detail |
| } // namespace bimap |
| } // namespace boost |
| |
| |
| #endif // BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP |