ceph/src/boost/libs/spirit/include/boost/spirit/home/classic/utility/impl/regex.ipp

   1 /*=============================================================================
   2     Copyright (c) 2002-2003 Hartmut Kaiser
   3     http://spirit.sourceforge.net/
   4
   5     Use, modification and distribution is subject to the Boost Software
   6     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7     http://www.boost.org/LICENSE_1_0.txt)
   8 =============================================================================*/
   9 #ifndef BOOST_SPIRIT_REGEX_IPP
  10 #define BOOST_SPIRIT_REGEX_IPP
  11
  12 ///////////////////////////////////////////////////////////////////////////////
  13 #include <boost/spirit/home/classic/core/primitives/impl/primitives.ipp>
  14
  15 ///////////////////////////////////////////////////////////////////////////////
  16 namespace boost { namespace spirit {
  17
  18 BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
  19
  20 namespace impl {
  21
  22 ///////////////////////////////////////////////////////////////////////////////
  23 //
  24 inline const char* rx_prefix(char) { return "\\A"; }
  25 inline const wchar_t* rx_prefix(wchar_t) { return L"\\A"; }
  26
  27 ///////////////////////////////////////////////////////////////////////////////
  28 //
  29 //  rx_parser class
  30 //
  31 ///////////////////////////////////////////////////////////////////////////////
  32 template <typename CharT = char>
  33 class rx_parser : public parser<rx_parser<CharT> > {
  34
  35 public:
  36     typedef std::basic_string<CharT> string_t;
  37     typedef rx_parser<CharT> self_t;
  38
  39     rx_parser(CharT const *first, CharT const *last)
  40     {
  41         rxstr = string_t(rx_prefix(CharT())) + string_t(first, last);
  42     }
  43
  44     rx_parser(CharT const *first)
  45     {
  46         rxstr = string_t(rx_prefix(CharT())) +
  47             string_t(first, impl::get_last(first));
  48     }
  49
  50     template <typename ScannerT>
  51     typename parser_result<self_t, ScannerT>::type
  52     parse(ScannerT const& scan) const
  53     {
  54         boost::match_results<typename ScannerT::iterator_t> what;
  55         boost::regex_search(scan.first, scan.last, what, rxstr,
  56             boost::match_default);
  57
  58         if (!what[0].matched)
  59             return scan.no_match();
  60
  61         scan.first = what[0].second;
  62         return scan.create_match(what[0].length(), nil_t(),
  63             what[0].first, scan.first);
  64     }
  65
  66 private:
  67 #if BOOST_VERSION >= 013300
  68     boost::basic_regex<CharT> rxstr;       // regular expression to match
  69 #else
  70     boost::reg_expression<CharT> rxstr;    // regular expression to match
  71 #endif
  72 };
  73
  74 }   // namespace impl
  75
  76 ///////////////////////////////////////////////////////////////////////////////
  77 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
  78
  79 }} // namespace boost::spirit
  80
  81 #endif // BOOST_SPIRIT_REGEX_IPP