ceph/src/boost/libs/spirit/include/boost/spirit/home/classic/core/non_terminal/grammar.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2003 Joel de Guzman
   3     Copyright (c) 2002-2003 Martin Wille
   4     Copyright (c) 2003 Hartmut Kaiser
   5     http://spirit.sourceforge.net/
   6
   7   Distributed under the Boost Software License, Version 1.0. (See accompanying
   8   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 =============================================================================*/
  10 #if !defined(BOOST_SPIRIT_GRAMMAR_HPP)
  11 #define BOOST_SPIRIT_GRAMMAR_HPP
  12
  13 ///////////////////////////////////////////////////////////////////////////////
  14 #if defined(BOOST_SPIRIT_THREADSAFE) && defined(BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE)
  15 #undef BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE
  16 #endif
  17
  18 #include <boost/spirit/home/classic/namespace.hpp>
  19 #include <boost/spirit/home/classic/core/parser.hpp>
  20 #include <boost/spirit/home/classic/core/non_terminal/parser_context.hpp>
  21 #include <boost/spirit/home/classic/core/non_terminal/impl/grammar.ipp>
  22
  23 ///////////////////////////////////////////////////////////////////////////////
  24 namespace boost { namespace spirit {
  25
  26 BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
  27
  28 ///////////////////////////////////////////////////////////////////////////////
  29 //
  30 //  grammar class
  31 //
  32 ///////////////////////////////////////////////////////////////////////////////
  33 template <typename DerivedT, typename ContextT = parser_context<> >
  34 struct grammar
  35     : public parser<DerivedT>
  36     , public ContextT::base_t
  37     , public context_aux<ContextT, DerivedT>
  38     BOOST_SPIRIT_GRAMMAR_ID
  39 {
  40     typedef grammar<DerivedT, ContextT>         self_t;
  41     typedef DerivedT const&                     embed_t;
  42     typedef typename ContextT::context_linker_t context_t;
  43     typedef typename context_t::attr_t          attr_t;
  44
  45     template <typename ScannerT>
  46     struct result
  47     {
  48         typedef typename match_result<ScannerT, attr_t>::type type;
  49     };
  50
  51     grammar() {}
  52     ~grammar() { impl::grammar_destruct(this); }
  53
  54     template <typename ScannerT>
  55     typename parser_result<self_t, ScannerT>::type
  56     parse_main(ScannerT const& scan) const
  57     { return impl::grammar_parser_parse<0>(this, scan); }
  58
  59     template <typename ScannerT>
  60     typename parser_result<self_t, ScannerT>::type
  61     parse(ScannerT const& scan) const
  62     {
  63         typedef typename parser_result<self_t, ScannerT>::type result_t;
  64         typedef parser_scanner_linker<ScannerT> scanner_t;
  65         BOOST_SPIRIT_CONTEXT_PARSE(scan, *this, scanner_t, context_t, result_t)
  66     }
  67
  68     template <int N>
  69     impl::entry_grammar<DerivedT, N, ContextT>
  70     use_parser() const
  71     { return impl::entry_grammar<DerivedT, N, ContextT>( this->derived()); }
  72
  73     BOOST_SPIRIT_GRAMMAR_STATE
  74 };
  75
  76 ///////////////////////////////////////////////////////////////////////////////
  77 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
  78
  79 }} // namespace BOOST_SPIRIT_CLASSIC_NS
  80
  81 #undef BOOST_SPIRIT_GRAMMAR_ID
  82 #undef BOOST_SPIRIT_GRAMMAR_STATE
  83 #endif
  84