[857] | 1 | /*=============================================================================
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| 2 | Copyright (c) 2001-2003 Joel de Guzman
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| 3 | Copyright (c) 2002-2003 Martin Wille
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| 4 | Copyright (c) 2003 Hartmut Kaiser
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| 5 | http://spirit.sourceforge.net/
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| 6 |
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| 7 | Use, modification and distribution is subject to the Boost Software
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| 8 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 9 | http://www.boost.org/LICENSE_1_0.txt)
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| 10 | =============================================================================*/
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| 11 | #if !defined(BOOST_SPIRIT_GRAMMAR_HPP)
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| 12 | #define BOOST_SPIRIT_GRAMMAR_HPP
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| 13 |
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| 14 | ///////////////////////////////////////////////////////////////////////////////
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| 15 | #if defined(BOOST_SPIRIT_THREADSAFE) && defined(BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE)
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| 16 | #undef BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE
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| 17 | #endif
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| 18 |
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| 19 | #include <boost/spirit/core/parser.hpp>
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| 20 | #include <boost/spirit/core/non_terminal/parser_context.hpp>
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| 21 | #include <boost/spirit/core/non_terminal/impl/grammar.ipp>
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| 22 |
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| 23 | ///////////////////////////////////////////////////////////////////////////////
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| 24 | namespace boost { namespace spirit {
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| 25 |
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| 26 | ///////////////////////////////////////////////////////////////////////////////
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| 27 | //
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| 28 | // grammar class
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| 29 | //
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| 30 | ///////////////////////////////////////////////////////////////////////////////
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| 31 | template <typename DerivedT, typename ContextT = parser_context<> >
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| 32 | struct grammar
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| 33 | : public parser<DerivedT>
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| 34 | , public ContextT::base_t
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| 35 | , public context_aux<ContextT, DerivedT>
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| 36 | BOOST_SPIRIT_GRAMMAR_ID
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| 37 | {
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| 38 | typedef grammar<DerivedT, ContextT> self_t;
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| 39 | typedef DerivedT const& embed_t;
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| 40 | typedef typename ContextT::context_linker_t context_t;
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| 41 | typedef typename context_t::attr_t attr_t;
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| 42 |
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| 43 | template <typename ScannerT>
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| 44 | struct result
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| 45 | {
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| 46 | typedef typename match_result<ScannerT, attr_t>::type type;
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| 47 | };
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| 48 |
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| 49 | grammar() {}
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| 50 | ~grammar() { impl::grammar_destruct(this); }
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| 51 |
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| 52 | template <typename ScannerT>
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| 53 | typename parser_result<self_t, ScannerT>::type
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| 54 | parse_main(ScannerT const& scan) const
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| 55 | { return impl::grammar_parser_parse<0>(this, scan); }
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| 56 |
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| 57 | template <typename ScannerT>
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| 58 | typename parser_result<self_t, ScannerT>::type
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| 59 | parse(ScannerT const& scan) const
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| 60 | {
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| 61 | typedef typename parser_result<self_t, ScannerT>::type result_t;
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| 62 | typedef parser_scanner_linker<ScannerT> scanner_t;
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| 63 | BOOST_SPIRIT_CONTEXT_PARSE(scan, *this, scanner_t, context_t, result_t)
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| 64 | }
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| 65 |
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| 66 | template <int N>
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| 67 | impl::entry_grammar<DerivedT, N, ContextT>
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| 68 | use_parser() const
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| 69 | { return impl::entry_grammar<DerivedT, N, ContextT>( this->derived()); }
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| 70 |
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| 71 | BOOST_SPIRIT_GRAMMAR_STATE
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| 72 | };
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| 73 |
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| 74 | ///////////////////////////////////////////////////////////////////////////////
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| 75 | }} // namespace boost::spirit
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| 76 |
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| 77 | #undef BOOST_SPIRIT_GRAMMAR_ID
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| 78 | #undef BOOST_SPIRIT_GRAMMAR_ACCESS
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| 79 | #undef BOOST_SPIRIT_GRAMMAR_STATE
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| 80 | #endif
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| 81 |
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