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// 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)
#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
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