ceph/src/boost/libs/xpressive/include/boost/xpressive/detail/core/matcher/alternate_end_matcher.hpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // alternate_end_matcher.hpp
   3 //
   4 //  Copyright 2008 Eric Niebler. Distributed under the Boost
   5 //  Software License, Version 1.0. (See accompanying file
   6 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7
   8 #ifndef BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_ALTERNATE_END_MATCHER_HPP_EAN_10_04_2005
   9 #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_ALTERNATE_END_MATCHER_HPP_EAN_10_04_2005
  10
  11 // MS compatible compilers support #pragma once
  12 #if defined(_MSC_VER)
  13 # pragma once
  14 # pragma warning(push)
  15 # pragma warning(disable : 4100) // unreferenced formal parameter
  16 #endif
  17
  18 #include <boost/xpressive/detail/detail_fwd.hpp>
  19 #include <boost/xpressive/detail/core/quant_style.hpp>
  20 #include <boost/xpressive/detail/core/state.hpp>
  21
  22 namespace boost { namespace xpressive { namespace detail
  23 {
  24
  25     ///////////////////////////////////////////////////////////////////////////////
  26     // alternate_end_matcher
  27     //
  28     struct alternate_end_matcher
  29       : quant_style_assertion
  30     {
  31         mutable void const *back_;
  32
  33         alternate_end_matcher()
  34           : back_(0)
  35         {
  36         }
  37
  38         template<typename BidiIter, typename Next>
  39         bool match(match_state<BidiIter> &state, Next const &next) const
  40         {
  41             return next.pop_match(state, this->back_);
  42         }
  43     };
  44
  45 }}}
  46
  47 #if defined(_MSC_VER)
  48 # pragma warning(pop)
  49 #endif
  50
  51 #endif