[antlr-interest] structure parameter access

[Alexey Demakov]

From: <silverio.di at qem.it>
> "Alexey Demakov" <demakov at ispras.ru> wrote:
> >Because parser doesn't know about skipped tokens the only way to
> >skip WS and forbid WS near POINT - is to handle
> struct_name.struct_parameter
> >as single token in lexer.
> 
> >Another idea - the only idea - is to track WS while skipping and decorate
> >POINT token by flag indicating that there was WS just before or after.
> >You can check it in parser rule and print error message.
> 
> Ok, I can write:
> 
> STRUCT_PARAMETER
>       :     IDENT
>             '.'
>             IDENT
>       ;
> 
> but in parser how can I extract from STRUCT_PARAMETER token
> the structure name and the parameter name ?

In parser

struct_parameter : t:STRUCT_PARAMETER
{
  String s = t.getText();
  int dot = s.indexOf( '.' );
  String structureName = s.substring( 0, dot );
  String parameterName = s.substring( dot + 1 );
  ...
}
;

Regards,
Alexey

-----
Alexey Demakov
TreeDL: Tree Description Language: http://treedl.sourceforge.net
RedVerst Group: http://www.unitesk.com




 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/antlr-interest/

<*> To unsubscribe from this group, send an email to:
    antlr-interest-unsubscribe at yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/