Hi,
I have the two following rules :
codeBlock : stmt+=compoundStatement* -> ^(STMT $stmt)* ;
compoundStatement
:
(
( /* empty */
| tryCatchBlock
| localVarDecl
| ifStatement
| chooseCaseStatement
| forStatement
| loopStatement
| embeddedSQL
| singleStatement
) (Semi! | EOL! )
)
| Label -> ^(LABEL Label)
;
As the compoundStatement can match empty lines or null statements
(like ;;;) my parser sometimes emit empty STMT nodes.
I cannot figure the correct way to conditionaly emit STMT if only the
compoundStatement is not empty.
I have tried something like codeBlock : stmt+=compoundStatement* ->
{$stmt.tree != null} ^(STMT $stmt)* ;
but because of the += notation the $stmt is a list and I did not find
yet the proper way to test each item.
Could you give me some help ?
--
Sébastien Kirche
List: http://www.antlr.org/mailman/listinfo/antlr-interest
Unsubscribe:
http://www.antlr.org/mailman/options/antlr-interest/your-email-address
--
You received this message because you are subscribed to the Google Groups
"il-antlr-interest" group.
To post to this group, send email to il-antlr-inter...@googlegroups.com.
To unsubscribe from this group, send email to
il-antlr-interest+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/il-antlr-interest?hl=en.
