[antlr-interest] ANTLRWorks, Internal ERROR with my grammar.

[Ruslan Zasukhin]

> On 21/1/08 9:50 PM, "Ruslan Zasukhin" <sunshine at public.kherson.ua> wrote:
 
Hi Again,

>> * debugger even do not starts and show dialog about INTERNAL ERROR.
>>     see attached picture.

I have found reason why debugger fails to start.

For this I have start reduce our grammar as much as possible and have come
to this:

----------------------------------
grammar VSQL_Parser;

sql
    :    sql_single  EOF!
    ;

sql_single    : 'create' 'table' IDENT;

IDENT  :   ('a'..'z'|'A'..'Z')+ ;
INT :   '0'..'9'+ ;
NEWLINE:'\r'? '\n' ;
WS  :   (' '|'\t')+ {skip();} ;
----------------------------------

And we still get this internal error
Solution is to remove  !  Near to  EOF!

Its never mind where !  Is located.

For example this also produce this error sometimes. But on the second run it
seems works fine..


----------------------------------
grammar VSQL_Parser;

sql
    :    sql_single  EOF
    ;

sql_single    : 'create' 'table'! IDENT;

IDENT  :   ('a'..'z'|'A'..'Z')+ ;
INT :   '0'..'9'+ ;
NEWLINE:'\r'? '\n' ;
WS  :   (' '|'\t')+ {skip();} ;
----------------------------------


Why this happens?  My bug?  ANTRLWorks bug ?


-- 
Best regards,

Ruslan Zasukhin
VP Engineering and New Technology
Paradigma Software, Inc

Valentina - Joining Worlds of Information
http://www.paradigmasoft.com

[I feel the need: the need for speed]