|
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 // $Source: /cvsroot/boost/boost/boost/mpl/find_if.hpp,v $ |
|
14 // $Date: 2004/09/02 15:40:41 $ |
|
15 // $Revision: 1.10 $ |
|
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 , 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 |