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Diffstat (limited to '3rdParty/Boost/src/boost/fusion/view/joint_view/detail/begin_impl.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/fusion/view/joint_view/detail/begin_impl.hpp | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/fusion/view/joint_view/detail/begin_impl.hpp b/3rdParty/Boost/src/boost/fusion/view/joint_view/detail/begin_impl.hpp new file mode 100644 index 0000000..a85a7e1 --- /dev/null +++ b/3rdParty/Boost/src/boost/fusion/view/joint_view/detail/begin_impl.hpp @@ -0,0 +1,67 @@ +/*============================================================================= + Copyright (c) 2001-2011 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_BEGIN_IMPL_07162005_0115) +#define FUSION_BEGIN_IMPL_07162005_0115 + +#include <boost/fusion/iterator/equal_to.hpp> +#include <boost/mpl/if.hpp> + +namespace boost { namespace fusion +{ + struct joint_view_tag; + + template <typename Category, typename First, typename Last, typename Concat> + struct joint_view_iterator; + + namespace extension + { + template <typename Tag> + struct begin_impl; + + template <> + struct begin_impl<joint_view_tag> + { + template <typename Sequence> + struct apply + { + typedef typename Sequence::first_type first_type; + typedef typename Sequence::last_type last_type; + typedef typename Sequence::concat_type concat_type; + typedef typename Sequence::category category; + typedef result_of::equal_to<first_type, last_type> equal_to; + + typedef typename + mpl::if_< + equal_to + , concat_type + , joint_view_iterator<category, first_type, last_type, concat_type> + >::type + type; + + static type + call(Sequence& s, mpl::true_) + { + return s.concat(); + } + + static type + call(Sequence& s, mpl::false_) + { + return type(s.first(), s.concat()); + } + + static type + call(Sequence& s) + { + return call(s, equal_to()); + } + }; + }; + } +}} + +#endif |