text: ///////////////////////////////////////////////////////////////////////////////
  // any_matcher.hpp
  //
  //  Copyright 2008 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)
  
  #ifndef BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_ANY_MATCHER_HPP_EAN_10_04_2005
  #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_ANY_MATCHER_HPP_EAN_10_04_2005
  
  // MS compatible compilers support #pragma once
  #if defined(_MSC_VER)
  # pragma once
  #endif
  
  #include <boost/xpressive/detail/detail_fwd.hpp>
  #include <boost/xpressive/detail/core/quant_style.hpp>
  #include <boost/xpressive/detail/core/state.hpp>
  
  namespace boost { namespace xpressive { namespace detail
  {
  
      ///////////////////////////////////////////////////////////////////////////////
      // any_matcher
      //
      struct any_matcher
      {
          BOOST_XPR_QUANT_STYLE(quant_fixed_width, 1, true)
  
          template<typename BidiIter, typename Next>
          static bool match(match_state<BidiIter> &state, Next const &next)
          {
              if(state.eos())
              {
                  return false;
              }
  
              ++state.cur_;
              if(next.match(state))
              {
                  return true;
              }
  
              --state.cur_;
              return false;
          }
      };
  
  }}}
  
  #endif
  