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 alternate_end_matcherboost::xpressive::detail::alternate_end_matcher33 alternate_end_matcher() 34 : back_(0) 35 { 36 } 37 38 template<typename BidiIter, typename Next> matchboost::xpressive::detail::alternate_end_matcher39 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 52