| /////////////////////////////////////////////////////////////////////////////// |
| // string_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_STRING_MATCHER_HPP_EAN_10_04_2005 |
| #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_STRING_MATCHER_HPP_EAN_10_04_2005 |
| |
| // MS compatible compilers support #pragma once |
| #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
| # pragma once |
| #endif |
| |
| #include <string> |
| #include <boost/mpl/bool.hpp> |
| #include <boost/xpressive/detail/detail_fwd.hpp> |
| #include <boost/xpressive/detail/core/quant_style.hpp> |
| #include <boost/xpressive/detail/core/state.hpp> |
| #include <boost/xpressive/detail/utility/algorithm.hpp> |
| #include <boost/xpressive/detail/utility/traits_utils.hpp> |
| |
| namespace boost { namespace xpressive { namespace detail |
| { |
| /////////////////////////////////////////////////////////////////////////////// |
| // string_matcher |
| // |
| template<typename Traits, typename ICase> |
| struct string_matcher |
| : quant_style_fixed_unknown_width |
| { |
| typedef typename Traits::char_type char_type; |
| typedef typename Traits::string_type string_type; |
| typedef ICase icase_type; |
| string_type str_; |
| char_type const *end_; |
| |
| string_matcher(string_type const &str, Traits const &tr) |
| : str_(str) |
| , end_() |
| { |
| typename range_iterator<string_type>::type cur = boost::begin(this->str_); |
| typename range_iterator<string_type>::type end = boost::end(this->str_); |
| for(; cur != end; ++cur) |
| { |
| *cur = detail::translate(*cur, tr, icase_type()); |
| } |
| this->end_ = detail::data_end(str_); |
| } |
| |
| string_matcher(string_matcher<Traits, ICase> const &that) |
| : str_(that.str_) |
| , end_(detail::data_end(str_)) |
| { |
| } |
| |
| template<typename BidiIter, typename Next> |
| bool match(match_state<BidiIter> &state, Next const &next) const |
| { |
| BidiIter const tmp = state.cur_; |
| char_type const *begin = detail::data_begin(this->str_); |
| for(; begin != this->end_; ++begin, ++state.cur_) |
| { |
| if(state.eos() || |
| (detail::translate(*state.cur_, traits_cast<Traits>(state), icase_type()) != *begin)) |
| { |
| state.cur_ = tmp; |
| return false; |
| } |
| } |
| |
| if(next.match(state)) |
| { |
| return true; |
| } |
| |
| state.cur_ = tmp; |
| return false; |
| } |
| |
| detail::width get_width() const |
| { |
| return boost::size(this->str_); |
| } |
| }; |
| |
| }}} |
| |
| #endif |