diff options
Diffstat (limited to 'boost/bimap/detail/modifier_adaptor.hpp')
-rw-r--r-- | boost/bimap/detail/modifier_adaptor.hpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/boost/bimap/detail/modifier_adaptor.hpp b/boost/bimap/detail/modifier_adaptor.hpp new file mode 100644 index 0000000000..b170549d08 --- /dev/null +++ b/boost/bimap/detail/modifier_adaptor.hpp @@ -0,0 +1,89 @@ +// 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 |