[antlr-interest] AntLR 3 is not validating the LAST character.

[Dave Dutcher]

There is a special EOF token you use to mark where the input should end.
This would probably work:
 
 
globalnumber : phonedigit (NEWLINE)* EOF;
 
 
 
Dave
 


  _____  

From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of Bharath R
Sent: Tuesday, June 16, 2009 11:20 PM
To: antlr-interest at antlr.org
Subject: [antlr-interest] AntLR 3 is not validating the LAST character.


Hi All 
 
I am facing an issue while parsing the last character of my input. 
 
Even if i give an invalid character at the last the parser is not throwing
the exception. 
 
The below is my grammar :- 
 
// *************************** 
grammar test;
 
globalnumber : phonedigit (NEWLINE)* ;
 
phonedigit : (DIGIT)* ; 
 
NEWLINE : '\n' ;
 
DIGIT : (0-9)
 
ALPHA : ('a'-'z') | ('A'-'Z'); 
 

// *************************** 
 
Here if we notice that the NEWLINE is an optional rule. , when I give the
input as " 12345a " for the rule "globalnumber" then the parser is not
throwing 
any exception. i checked the parser code its just consuming those tokens .
:-( 
 
When I make the NEWLINE as mandatory then its working fine. but i dont want
that to be a mandatory RULE. 
 
Thanx a lot for reading this query expecting your response. 
 
Regards
Bharath R 





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