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Diffstat (limited to 'boost/fusion/algorithm/query/find_if.hpp')
| -rw-r--r-- | boost/fusion/algorithm/query/find_if.hpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/boost/fusion/algorithm/query/find_if.hpp b/boost/fusion/algorithm/query/find_if.hpp new file mode 100644 index 0000000000..9dbd46b58c --- /dev/null +++ b/boost/fusion/algorithm/query/find_if.hpp @@ -0,0 +1,64 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + Copyright (c) 2011 Eric Niebler + + 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_IF_05052005_1108) +#define FUSION_FIND_IF_05052005_1108 + +#include <boost/fusion/algorithm/query/find_if_fwd.hpp> +#include <boost/fusion/algorithm/query/detail/find_if.hpp> +#include <boost/fusion/algorithm/query/detail/segmented_find_if.hpp> +#include <boost/fusion/iterator/value_of.hpp> +#include <boost/fusion/support/is_segmented.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/type_traits/is_const.hpp> +#include <boost/mpl/bind.hpp> +#include <boost/mpl/lambda.hpp> +#include <boost/mpl/placeholders.hpp> +#include <boost/mpl/quote.hpp> + +namespace boost { namespace fusion +{ + namespace result_of + { + template <typename Sequence, typename Pred> + struct find_if + : mpl::if_< + traits::is_segmented<Sequence> + , detail::result_of_segmented_find_if<Sequence, Pred> + , detail::result_of_find_if< + Sequence, + mpl::bind1< + typename mpl::lambda<Pred>::type + , mpl::bind1<mpl::quote1<value_of>, mpl::_1> + > + > + >::type + {}; + } + + template <typename Pred, typename Sequence> + inline typename + lazy_disable_if< + is_const<Sequence> + , result_of::find_if<Sequence, Pred> + >::type + find_if(Sequence& seq) + { + typedef typename result_of::find_if<Sequence, Pred>::filter filter; + return filter::call(seq); + } + + template <typename Pred, typename Sequence> + inline typename result_of::find_if<Sequence const, Pred>::type const + find_if(Sequence const& seq) + { + typedef typename result_of::find_if<Sequence const, Pred>::filter filter; + return filter::call(seq); + } +}} + +#endif |