1 /////////////////////////////////////////////////////////////////////////////// 2 // epsilon_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_EPSILON_MATCHER_HPP_EAN_10_04_2005 9 #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_EPSILON_MATCHER_HPP_EAN_10_04_2005 10 11 // MS compatible compilers support #pragma once 12 #if defined(_MSC_VER) 13 # pragma once 14 #endif 15 16 #include <boost/xpressive/detail/detail_fwd.hpp> 17 #include <boost/xpressive/detail/core/quant_style.hpp> 18 #include <boost/xpressive/detail/core/state.hpp> 19 20 namespace boost { namespace xpressive { namespace detail 21 { 22 23 /////////////////////////////////////////////////////////////////////////////// 24 // epsilon_matcher 25 // 26 struct epsilon_matcher 27 { 28 BOOST_XPR_QUANT_STYLE(quant_none, 0, true) 29 30 template<typename BidiIter, typename Next> matchboost::xpressive::detail::epsilon_matcher31 static bool match(match_state<BidiIter> &state, Next const &next) 32 { 33 return next.match(state); 34 } 35 }; 36 37 }}} 38 39 #endif 40