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This commit is contained in:
Ari Lazier 2015-11-09 08:27:27 -08:00
parent ed4e59c8d0
commit 2f287d046d
1 changed files with 26 additions and 6 deletions
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32
src/object-store/parser/parser.cpp
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@ -57,13 +57,17 @@ namespace query
struct group_pred : if_must< one< '(' >, pad< pred, blank >, one< ')' > > {}; struct group_pred : if_must< one< '(' >, pad< pred, blank >, one< ')' > > {};
struct single_pred : pad< sor< group_pred, comparison_pred >, blank > {}; struct single_pred : pad< sor< group_pred, comparison_pred >, blank > {};
struct not_pre : pegtl::string< 'N', 'O', 'T' > {}; struct not_pre : sor< seq< one< '!' >, star< blank > >, seq< istring< 'N', 'O', 'T' >, plus< blank > > > {};
struct atom_pred : seq< opt< not_pre >, single_pred > {}; struct atom_pred : seq< opt< not_pre >, single_pred > {};
struct or_ext : if_must< two< '|' >, atom_pred > {}; struct and_op : sor< two< '&' >, istring< 'A', 'N', 'D' > > {};
struct and_ext : if_must< two< '&' >, atom_pred > {}; struct or_op : sor< two< '|' >, istring< 'O', 'R' > > {};
struct pred : seq< atom_pred, star< sor< or_ext, and_ext > > > {}; struct or_ext : seq< pad< or_op, blank >, pred > {};
struct and_ext : seq< pad< and_op, blank >, pred > {};
struct and_pred : seq< atom_pred, star< and_ext > > {};
struct pred : seq< and_pred, star< or_ext > > {};
// rules // rules
template< typename Rule > template< typename Rule >
@ -92,11 +96,27 @@ namespace query
} }
}; };
template<> struct action< one< '(' > >
{
static void apply( const input & in, std::string & string_value )
{
std::cout << "<begin_group>" << std::endl;
}
};
template<> struct action< group_pred > template<> struct action< group_pred >
{ {
static void apply( const input & in, std::string & string_value ) static void apply( const input & in, std::string & string_value )
{ {
std::cout << "<group>" << std::endl; std::cout << "<end_group>" << std::endl;
}
};
template<> struct action< not_pre >
{
static void apply( const input & in, std::string & string_value )
{
std::cout << "<not>" << std::endl;
} }
}; };
} }
@ -106,7 +126,7 @@ int main( int argc, char ** argv )
if ( argc > 1 ) { if ( argc > 1 ) {
std::string intstring; std::string intstring;
analyze< query::pred >(); analyze< query::pred >();
parse< must< seq< query::pred, eof > >, query::action >( 1, argv, intstring); parse< must< query::pred, eof >, query::action >( 1, argv, intstring);
} }
} }