ceph/src/boost/libs/metaparse/include/boost/metaparse/v1/impl/apply_parser.hpp

   1 #ifndef BOOST_METAPARSE_V1_IMPL_APPLY_PARSER_HPP
   2 #define BOOST_METAPARSE_V1_IMPL_APPLY_PARSER_HPP
   3
   4 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2013.
   5 // Distributed under the Boost Software License, Version 1.0.
   6 //    (See accompanying file LICENSE_1_0.txt or copy at
   7 //          http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <boost/metaparse/v1/unless_error.hpp>
  10 #include <boost/metaparse/v1/get_result.hpp>
  11 #include <boost/metaparse/v1/get_remaining.hpp>
  12 #include <boost/metaparse/v1/get_position.hpp>
  13 #include <boost/metaparse/v1/transform.hpp>
  14
  15 #include <boost/mpl/push_back.hpp>
  16
  17 namespace boost
  18 {
  19   namespace metaparse
  20   {
  21     namespace v1
  22     {
  23       namespace impl
  24       {
  25         struct apply_parser
  26         {
  27         private:
  28           template <class ListToAppend>
  29           struct do_append
  30           {
  31             template <class Item>
  32             struct apply : boost::mpl::push_back<ListToAppend, Item> {};
  33           };
  34
  35           template <class Accum, class S, class Pos, class Parser>
  36           struct apply_unchecked :
  37             transform<Parser,do_append<typename Accum::type> >::template apply<
  38               typename S::type,
  39               typename Pos::type
  40             >
  41           {};
  42
  43         public:
  44           template <class State, class Parser>
  45           struct apply :
  46             unless_error<
  47               State,
  48               apply_unchecked<
  49                 get_result<State>,
  50                 get_remaining<State>,
  51                 get_position<State>,
  52                 Parser
  53               >
  54             >
  55           {};
  56         };
  57       }
  58     }
  59   }
  60 }
  61
  62 #endif
  63