| 1 | // |
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| 2 | // Copyright (c) 2005 João Abecasis |
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| 3 | // |
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| 4 | // Distributed under the Boost Software License, Version 1.0. (See |
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| 5 | // accompanying file LICENSE_1_0.txt or copy at |
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| 6 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | // |
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| 8 | |
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| 9 | #include <boost/spirit/core.hpp> |
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| 10 | #include <boost/spirit/attribute.hpp> |
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| 11 | #include <boost/spirit/utility/grammar_def.hpp> |
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| 12 | |
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| 13 | struct my_grammar1 |
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| 14 | : boost::spirit::grammar<my_grammar1> |
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| 15 | { |
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| 16 | template <typename Scanner> |
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| 17 | struct definition |
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| 18 | : boost::spirit::grammar_def< |
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| 19 | boost::spirit::rule<Scanner>, |
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| 20 | boost::spirit::same |
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| 21 | > |
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| 22 | { |
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| 23 | definition(my_grammar1 const &) |
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| 24 | { |
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| 25 | BOOST_SPIRIT_DEBUG_NODE(start_rule1); |
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| 26 | BOOST_SPIRIT_DEBUG_NODE(start_rule2); |
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| 27 | |
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| 28 | start_rule1 = boost::spirit::str_p("int"); |
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| 29 | start_rule2 = boost::spirit::int_p; |
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| 30 | |
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| 31 | this->start_parsers(start_rule1, start_rule2); |
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| 32 | } |
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| 33 | |
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| 34 | boost::spirit::rule<Scanner> |
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| 35 | start_rule1, |
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| 36 | start_rule2; |
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| 37 | }; |
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| 38 | }; |
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| 39 | |
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| 40 | struct my_closure : boost::spirit::closure<my_closure, int> |
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| 41 | { |
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| 42 | member1 value; |
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| 43 | }; |
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| 44 | |
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| 45 | struct my_grammar2 |
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| 46 | : boost::spirit::grammar<my_grammar2, my_closure::context_t> |
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| 47 | { |
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| 48 | template <typename Scanner> |
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| 49 | struct definition |
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| 50 | : boost::spirit::grammar_def< |
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| 51 | boost::spirit::rule<Scanner>, |
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| 52 | boost::spirit::same |
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| 53 | > |
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| 54 | { |
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| 55 | definition(my_grammar2 const &) |
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| 56 | { |
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| 57 | BOOST_SPIRIT_DEBUG_NODE(start_rule1); |
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| 58 | BOOST_SPIRIT_DEBUG_NODE(start_rule2); |
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| 59 | |
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| 60 | start_rule1 = boost::spirit::str_p("int"); |
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| 61 | start_rule2 = boost::spirit::int_p; |
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| 62 | |
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| 63 | this->start_parsers(start_rule1, start_rule2); |
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| 64 | } |
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| 65 | |
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| 66 | boost::spirit::rule<Scanner> |
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| 67 | start_rule1, |
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| 68 | start_rule2; |
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| 69 | }; |
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| 70 | }; |
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| 71 | |
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| 72 | int main() |
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| 73 | { |
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| 74 | my_grammar1 g1; |
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| 75 | my_grammar2 g2; |
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| 76 | |
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| 77 | BOOST_SPIRIT_DEBUG_NODE(g1); |
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| 78 | BOOST_SPIRIT_DEBUG_NODE(g2); |
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| 79 | |
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| 80 | parse( |
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| 81 | "int 5", |
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| 82 | g1.use_parser<0>() >> g2.use_parser<1>(), |
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| 83 | boost::spirit::space_p |
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| 84 | ); |
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| 85 | } |
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