forked from boostorg/mpl
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
//-----------------------------------------------------------------------------
|
|
// boost mpl/aux_/partition_op.hpp header file
|
|
// See http://www.boost.org for updates, documentation, and revision history.
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Copyright (c) 2003
|
|
// Eric Friedman
|
|
//
|
|
// Permission to use, copy, modify, distribute and sell this software
|
|
// and its documentation for any purpose is hereby granted without fee,
|
|
// provided that the above copyright notice appears in all copies and
|
|
// that both the copyright notice and this permission notice appear in
|
|
// supporting documentation. No representations are made about the
|
|
// suitability of this software for any purpose. It is provided "as is"
|
|
// without express or implied warranty.
|
|
|
|
#ifndef BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
|
|
#define BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
|
|
|
|
#include "boost/mpl/apply.hpp"
|
|
#include "boost/mpl/apply_if.hpp"
|
|
#include "boost/mpl/if.hpp"
|
|
#include "boost/mpl/pair.hpp"
|
|
#include "boost/mpl/push_front.hpp"
|
|
#include "boost/mpl/aux_/lambda_spec.hpp"
|
|
|
|
namespace boost {
|
|
namespace mpl {
|
|
namespace aux {
|
|
|
|
template <typename Predicate>
|
|
struct partition_op
|
|
{
|
|
template <typename State, typename Iter>
|
|
struct apply
|
|
{
|
|
private:
|
|
typedef typename State::first first_;
|
|
typedef typename State::second second_;
|
|
typedef typename Iter::type t_;
|
|
typedef typename apply1< Predicate,t_ >::type pred_;
|
|
|
|
typedef typename apply_if<
|
|
pred_
|
|
, push_front< first_, t_ >
|
|
, push_front< second_, t_ >
|
|
>::type result_;
|
|
|
|
public:
|
|
typedef typename if_<
|
|
pred_
|
|
, pair< result_,second_ >
|
|
, pair< first_,result_ >
|
|
>::type type;
|
|
};
|
|
};
|
|
|
|
} // namespace aux
|
|
|
|
BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1,aux::partition_op)
|
|
|
|
} // namespace mpl
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
|