| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| |
| 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) |
| ==============================================================================*/ |
| #if !defined(FUSION_FIND_05052005_1107) |
| #define FUSION_FIND_05052005_1107 |
| |
| #include <boost/fusion/algorithm/query/detail/find_if.hpp> |
| #include <boost/fusion/sequence/intrinsic/begin.hpp> |
| #include <boost/fusion/sequence/intrinsic/end.hpp> |
| #include <boost/fusion/iterator/key_of.hpp> |
| #include <boost/fusion/iterator/value_of.hpp> |
| #include <boost/fusion/support/category_of.hpp> |
| #include <boost/mpl/if.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| #include <boost/type_traits/is_const.hpp> |
| #include <boost/utility/enable_if.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| namespace result_of |
| { |
| template < |
| typename Sequence |
| , typename T |
| > |
| struct find |
| { |
| typedef |
| detail::static_find_if< |
| typename result_of::begin<Sequence>::type |
| , typename result_of::end<Sequence>::type |
| , is_same< |
| typename mpl::if_< |
| traits::is_associative<Sequence> |
| , key_of<mpl::_1> |
| , value_of<mpl::_1> |
| >::type |
| , T |
| > |
| > |
| filter; |
| |
| typedef typename filter::type type; |
| }; |
| } |
| |
| template <typename T, typename Sequence> |
| inline typename |
| lazy_disable_if< |
| is_const<Sequence> |
| , result_of::find<Sequence, T> |
| >::type const |
| find(Sequence& seq) |
| { |
| typedef typename result_of::find<Sequence, T>::filter filter; |
| return filter::call(fusion::begin(seq)); |
| } |
| |
| template <typename T, typename Sequence> |
| inline typename result_of::find<Sequence const, T>::type const |
| find(Sequence const& seq) |
| { |
| typedef typename result_of::find<Sequence const, T>::filter filter; |
| return filter::call(fusion::begin(seq)); |
| } |
| }} |
| |
| #endif |
| |