[antlr-interest] ANTLR 3.4 not generating compilable Parser file Java target
Karishma Chadha
kchadha at wellesley.edu
Tue Jul 24 08:42:54 PDT 2012
Hello,
I have been using ANTLR 3.4 to generate a Lexer and Parser for my language
in a Java target. Yesterday, I got a compiler error when trying to compile
my generated parser file which looks like this:
VenthonParser.java:9621: illegal start of expression
void =null;
^
VenthonParser.java:9692: illegal start of expression
void =null;
^
One of the corresponding chunks of code in the Parser is as follows (the
other one is similar):
public final void synpred81_Venthon_fragment() throws RecognitionException
{
void =null;
// Venthon.g:585:5: ( ( PLUS | MINUS ) b= term )
// Venthon.g:585:5: ( PLUS | MINUS ) b= term
{
if ( input.LA(1)==MINUS||input.LA(1)==PLUS ) {
input.consume();
state.errorRecovery=false;
state.failed=false;
}
else {
if (state.backtracking>0) {state.failed=true; return ;}
MismatchedSetException mse = new
MismatchedSetException(null,input);
throw mse;
}
pushFollow(FOLLOW_term_in_synpred81_Venthon1835);
b=term();
state._fsp--;
if (state.failed) return ;
}
}
I have seen some of the other messages on the ANTLR mailing list saying
that this is a known issue in ANTLR 3.4 that was fixed but then backed out
again. Is there any solution to this even if it is just a temporary one
until the next release? I would prefer not to have to switch to a previous
version of ANTLR if that can be avoided. I need to continue using ANTLR in
my project and I am on a tight deadline.
Please let me know if there are any solutions.
Thank you!
--
*Karishma Chadha*
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