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0001 /*=============================================================================
0002     Copyright (c) 2001-2011 Joel de Guzman
0003 
0004     Distributed under the Boost Software License, Version 1.0. (See accompanying 
0005     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 ==============================================================================*/
0007 #if !defined(FUSION_REPLACE_IF_08182005_0939)
0008 #define FUSION_REPLACE_IF_08182005_0939
0009 
0010 #include <boost/fusion/support/config.hpp>
0011 #include <boost/fusion/view/transform_view/transform_view.hpp>
0012 #include <boost/fusion/algorithm/transformation/detail/replace_if.hpp>
0013 #include <boost/fusion/support/is_sequence.hpp>
0014 #include <boost/utility/enable_if.hpp>
0015 #include <boost/type_traits/is_same.hpp>
0016 
0017 namespace boost { namespace fusion
0018 {
0019     namespace result_of
0020     {
0021         template <typename Sequence, typename F, typename T>
0022         struct replace_if
0023         {
0024             typedef transform_view<Sequence, detail::replacer_if<F, T> > type;
0025         };
0026     }
0027 
0028     template <typename Sequence, typename F, typename T>
0029     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0030     inline typename
0031         enable_if<
0032             traits::is_sequence<Sequence>
0033           , typename result_of::replace_if<Sequence const, F, T>::type
0034         >::type
0035     replace_if(Sequence const& seq, F pred, T const& new_value)
0036     {
0037         typedef typename result_of::replace_if<Sequence const, F, T>::type result;
0038         detail::replacer_if<F, T> f(pred, new_value);
0039         return result(seq, f);
0040     }
0041 }}
0042 
0043 #endif
0044