// 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 |