| 1 | |
|---|---|
| 2 | #ifndef BOOST_MPL_FIND_IF_HPP_INCLUDED |
| 3 | #define BOOST_MPL_FIND_IF_HPP_INCLUDED |
| 4 | |
| 5 | // Copyright Aleksey Gurtovoy 2000-2004 |
| 6 | // |
| 7 | // Distributed under the Boost Software License, Version 1.0. |
| 8 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 9 | // http://www.boost.org/LICENSE_1_0.txt) |
| 10 | // |
| 11 | // See http://www.boost.org/libs/mpl for documentation. |
| 12 | |
| 13 | // $Id$ |
| 14 | // $Date$ |
| 15 | // $Revision$ |
| 16 | |
| 17 | #include <boost/mpl/aux_/find_if_pred.hpp> |
| 18 | #include <boost/mpl/arg.hpp> |
| 19 | #include <boost/mpl/iter_fold_if.hpp> |
| 20 | #include <boost/mpl/aux_/common_name_wknd.hpp> |
| 21 | #include <boost/mpl/aux_/na_spec.hpp> |
| 22 | #include <boost/mpl/aux_/lambda_support.hpp> |
| 23 | |
| 24 | namespace boost { namespace mpl { |
| 25 | |
| 26 | BOOST_MPL_AUX_COMMON_NAME_WKND(find_if) |
| 27 | |
| 28 | template< |
| 29 | typename BOOST_MPL_AUX_NA_PARAM(Sequence) |
| 30 | , typename BOOST_MPL_AUX_NA_PARAM(Predicate) |
| 31 | > |
| 32 | struct find_if |
| 33 | { |
| 34 | typedef typename iter_fold_if< |
| 35 | Sequence |
| 36 | , void |
| 37 | , mpl::arg<1> // ignore |
| 38 | , protect< aux::find_if_pred<Predicate> > |
| 39 | >::type result_; |
| 40 | |
| 41 | typedef typename second<result_>::type type; |
| 42 | |
| 43 | BOOST_MPL_AUX_LAMBDA_SUPPORT(2,find_if,(Sequence,Predicate)) |
| 44 | }; |
| 45 | |
| 46 | BOOST_MPL_AUX_NA_SPEC(2,find_if) |
| 47 | |
| 48 | }} |
| 49 | |
| 50 | #endif // BOOST_MPL_FIND_IF_HPP_INCLUDED |
| 51 |