| 1 | #undef qword
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| 2 | #include "boost/spirit/home/qi.hpp"
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| 3 | #include "boost/spirit/home/phoenix.hpp"
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| 4 | #include "boost/type_traits.hpp"
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| 5 |
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| 6 | namespace qi = boost::spirit::qi;
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| 7 | namespace ascii = boost::spirit::ascii;
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| 8 | namespace phoenix = boost::phoenix;
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| 9 |
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| 10 | template< typename Iterator >
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| 11 | struct foo : public qi::grammar< Iterator, void(), ascii::space_type >
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| 12 | {
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| 13 | typedef qi::symbols< char, qi::rule< Iterator, void( const int& ), ascii::space_type >* > SymbolsType;
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| 14 | foo() : foo::base_type( "FooGrammar" )
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| 15 | {
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| 16 | m_Symbols.add( "bar", new typename boost::remove_pointer< typename SymbolsType::value_type >::type( qi::int_( qi::_r1 ) ) );
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| 17 | m_NabialekTrick %= m_Symbols[ qi::_a = qi::_1 ] >> boost::spirit::lazy( *qi::_a )( qi::_r1 ); // Can't pass qi::_r1 to the rule due to lazy( *SymbolsType::value_type ) != *SymbolsType::value_type
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| 18 | m_Root %= m_NabialekTrick( 1 );
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| 19 | }
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| 20 | SymbolsType m_Symbols;
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| 21 | typename foo::start_type m_Root;
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| 22 | qi::rule< Iterator, void( const int& ), qi::locals< typename SymbolsType::value_type >, ascii::space_type > m_NabialekTrick;
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| 23 | };
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| 24 |
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| 25 | int main()
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| 26 | {
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| 27 | foo< std::string::iterator > inst;
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| 28 | std::string src("humbug");
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| 29 | qi::phrase_parse( src.begin(), src.end(), inst, ascii::space );
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| 30 | }
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