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67 lines
1.9 KiB
67 lines
1.9 KiB
///////////////////////////////////////////////////////////////////////////////
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// literal_matcher.hpp
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//
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// Copyright 2008 Eric Niebler. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_LITERAL_MATCHER_HPP_EAN_10_04_2005
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#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_LITERAL_MATCHER_HPP_EAN_10_04_2005
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/xpressive/detail/detail_fwd.hpp>
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#include <boost/xpressive/detail/core/quant_style.hpp>
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#include <boost/xpressive/detail/core/state.hpp>
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#include <boost/xpressive/detail/utility/traits_utils.hpp>
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namespace boost { namespace xpressive { namespace detail
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{
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///////////////////////////////////////////////////////////////////////////////
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// literal_matcher
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//
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template<typename Traits, typename ICase, typename Not>
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struct literal_matcher
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: quant_style_fixed_width<1>
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{
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typedef typename Traits::char_type char_type;
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typedef Not not_type;
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typedef ICase icase_type;
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char_type ch_;
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explicit literal_matcher(char_type ch)
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: ch_(ch)
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{}
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literal_matcher(char_type ch, Traits const &tr)
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: ch_(detail::translate(ch, tr, icase_type()))
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{}
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template<typename BidiIter, typename Next>
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bool match(match_state<BidiIter> &state, Next const &next) const
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{
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if(state.eos() || Not::value ==
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(detail::translate(*state.cur_, traits_cast<Traits>(state), icase_type()) == this->ch_))
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{
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return false;
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}
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++state.cur_;
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if(next.match(state))
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{
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return true;
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}
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--state.cur_;
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return false;
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}
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};
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}}}
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#endif
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