92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
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// Boost.Bimap
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//
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// Copyright (c) 2006-2007 Matias Capeletto
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/// \file detail/modifier_adaptor.hpp
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/// \brief A binary to unary functor relation modifier adaptor.
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#ifndef BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP
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#define BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/config.hpp>
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namespace boost {
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namespace bimaps {
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namespace detail {
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/// \brief A binary to unary functor relation modifier adaptor.
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template
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<
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class Modifier,
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class NewArgument,
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class FirstExtractor,
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class SecondExtractor
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>
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struct relation_modifier_adaptor :
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Modifier,
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FirstExtractor,
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SecondExtractor
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{
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typedef NewArgument argument_type;
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typedef void result_type;
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relation_modifier_adaptor( const Modifier & m ) : Modifier(m) {}
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relation_modifier_adaptor( const Modifier & m,
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const FirstExtractor & fe,
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const SecondExtractor & se ) :
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Modifier(m), FirstExtractor(fe), SecondExtractor(se) {}
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void operator()( NewArgument & x ) const
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{
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Modifier::operator()(
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FirstExtractor ::operator()( x ),
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SecondExtractor::operator()( x )
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);
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}
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};
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/// \brief A simple unary modifier adaptor.
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// This modifier is equivalent to bind( Modifier, bind( Extractor, _1 ) )
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// It may be a good idea to start using Boost.Bind instead of it.
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template
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<
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class Modifier,
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class NewArgument,
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class Extractor
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>
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struct unary_modifier_adaptor :
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Modifier,
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Extractor
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{
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typedef NewArgument argument_type;
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typedef void result_type;
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unary_modifier_adaptor( const Modifier & m ) : Modifier(m) {}
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unary_modifier_adaptor( const Modifier & m,
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const Extractor & fe) :
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Modifier(m), Extractor(fe) {}
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void operator()( NewArgument & x ) const
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{
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Modifier::operator()( Extractor::operator()( x ) );
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}
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};
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} // namespace detail
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} // namespace bimap
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} // namespace boost
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#endif // BOOST_BIMAP_DETAIL_MODIFIER_ADAPTOR_HPP
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