#ifndef BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED | |
#define BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED | |
// Copyright Aleksey Gurtovoy 2000-2004 | |
// | |
// 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) | |
// | |
// See http://www.boost.org/libs/mpl for documentation. | |
// $Id: max_element.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ | |
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ | |
// $Revision: 49267 $ | |
#include <boost/mpl/less.hpp> | |
#include <boost/mpl/iter_fold.hpp> | |
#include <boost/mpl/begin_end.hpp> | |
#include <boost/mpl/if.hpp> | |
#include <boost/mpl/deref.hpp> | |
#include <boost/mpl/apply.hpp> | |
#include <boost/mpl/aux_/common_name_wknd.hpp> | |
#include <boost/mpl/aux_/na_spec.hpp> | |
namespace boost { namespace mpl { | |
BOOST_MPL_AUX_COMMON_NAME_WKND(max_element) | |
namespace aux { | |
template< typename Predicate > | |
struct select_max | |
{ | |
template< typename OldIterator, typename Iterator > | |
struct apply | |
{ | |
typedef typename apply2< | |
Predicate | |
, typename deref<OldIterator>::type | |
, typename deref<Iterator>::type | |
>::type condition_; | |
typedef typename if_< | |
condition_ | |
, Iterator | |
, OldIterator | |
>::type type; | |
}; | |
}; | |
} // namespace aux | |
template< | |
typename BOOST_MPL_AUX_NA_PARAM(Sequence) | |
, typename Predicate = less<_,_> | |
> | |
struct max_element | |
: iter_fold< | |
Sequence | |
, typename begin<Sequence>::type | |
, protect< aux::select_max<Predicate> > | |
> | |
{ | |
}; | |
BOOST_MPL_AUX_NA_SPEC(1, max_element) | |
}} | |
#endif // BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED |