forked from boostorg/mpl
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
//-----------------------------------------------------------------------------
|
|
// boost mpl/find_if.hpp header file
|
|
// See http://www.boost.org for updates, documentation, and revision history.
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Copyright (c) 2000-02
|
|
// Aleksey Gurtovoy
|
|
//
|
|
// 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_FIND_IF_HPP_INCLUDED
|
|
#define BOOST_MPL_FIND_IF_HPP_INCLUDED
|
|
|
|
#include "boost/mpl/aux_/iter_fold_if_impl.hpp"
|
|
#include "boost/mpl/aux_/iter_apply.hpp"
|
|
#include "boost/mpl/or.hpp"
|
|
#include "boost/mpl/not.hpp"
|
|
#include "boost/mpl/begin_end.hpp"
|
|
#include "boost/mpl/always.hpp"
|
|
#include "boost/mpl/lambda.hpp"
|
|
#include "boost/mpl/bind.hpp"
|
|
#include "boost/mpl/apply.hpp"
|
|
#include "boost/mpl/void.hpp"
|
|
#include "boost/mpl/aux_/void_spec.hpp"
|
|
#include "boost/mpl/aux_/lambda_support.hpp"
|
|
#include "boost/type_traits/is_same.hpp"
|
|
|
|
namespace boost {
|
|
namespace mpl {
|
|
|
|
namespace aux {
|
|
|
|
template< typename LastIterator >
|
|
struct find_if_pred
|
|
{
|
|
template<
|
|
typename Predicate
|
|
, typename Iterator
|
|
>
|
|
struct apply
|
|
{
|
|
typedef typename not_< or_<
|
|
is_same<Iterator,LastIterator>
|
|
, aux::iter_apply1<Predicate,Iterator>
|
|
> >::type type;
|
|
};
|
|
};
|
|
|
|
} // namespace aux
|
|
|
|
BOOST_MPL_AUX_AGLORITHM_NAMESPACE_BEGIN
|
|
|
|
template<
|
|
typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence)
|
|
, typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Predicate)
|
|
>
|
|
struct find_if
|
|
{
|
|
private:
|
|
typedef typename begin<Sequence>::type first_;
|
|
typedef typename end<Sequence>::type last_;
|
|
typedef typename lambda<Predicate>::type pred_;
|
|
|
|
public:
|
|
typedef typename aux::iter_fold_if_impl<
|
|
first_
|
|
, pred_
|
|
, mpl::arg<1>
|
|
, aux::find_if_pred<last_>
|
|
, void
|
|
, always<false_>
|
|
>::iterator type;
|
|
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(2,find_if,(Sequence,Predicate))
|
|
};
|
|
|
|
BOOST_MPL_AUX_AGLORITHM_NAMESPACE_END
|
|
|
|
BOOST_MPL_AUX_ALGORITHM_VOID_SPEC(2,find_if)
|
|
|
|
} // namespace mpl
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_MPL_FIND_IF_HPP_INCLUDED
|