[antlr-interest] Grammar problem, probably silly....

[Ruth Karl]

Jim Idle schrieb:
> Karl,
>   
(this is my last name ;-) prefer to be called Ruth...)

> You cannot execute predicates in interpretative mode in ANTLR. 
You mean: ANTLRWorks - right???
Also I copied the idea of using the predicates that way from 
http://www.antlr.org/wiki/display/ANTLR3/1.+Lexer
that is why I supposed it would work this way...
But I'll try to debug it outside ANTLRWorks and see what happens, thanks 
for your suggestions, Jim.

Have a nice day,
Ruth

> To test
> you have to compile and debug it and see if you get the same problem. IF
> you do then the issue is with your predicates most likely.
>
> Jim
>
>
>   
>> -----Original Message-----
>> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
>> bounces at antlr.org] On Behalf Of Ruth Karl
>> Sent: Tuesday, June 05, 2007 10:10 AM
>> To: ANTR Interest
>> Subject: [antlr-interest] Grammar problem, probably silly....
>>
>> Hi,
>>
>> I have been trying quite a while now, but I keep getting a
>> MismatchedTokenException with the following simplified test grammar:
>>
>>         grammar JSP;
>>
>>         options {
>>             language = CSharp;
>>             output = AST;
>>         }
>>
>>
>>         @members {
>>              boolean xmlDoc = false;
>>               boolean outputEnabled = false;
>>         }
>>
>>
>>
>>         @lexer::members {
>>                 boolean tagMode = false;
>>         }
>>
>>         // Parser rules
>>         jsp    :    oroot (content)* croot EOF
>>             ;
>>         oroot     :     OPENTAG OROOT CLOSETAG
>>             ;
>>         croot    :    OPENTAG '/jsp:root' CLOSETAG
>>             ;
>>         content    :     TEXT
>>             ;
>>
>>
>>
>>         // Lexer rules
>>         OPENTAG     :     '<' { tagMode = true; }
>>             ;
>>         CLOSETAG     :     '>' { tagMode = false; }
>>             ;
>>         TEXT    :    {!tagMode}?=> (~'<')+
>>         ;
>>         OROOT    :    'jsp:root'
>>          ;
>>
>> The exception occurs when I print
>>
>>         <jsp:root>ljlj</jsp:root>
>>
>> in the interpreter and tell it to start from jsp rule.
>> it says (4!=5), according to the generated files this is OROOT=5 and
>> OPENTAG=4.
>> Could anyone please help me with that???
>>
>> Thanks a lot!
>>
>> Ruth
>>     
>
>