[antlr-interest] java.lang.OutOfMemoryError

[Alexey Demakov]

Here is shortened version of your parser with main() reading System.in
I don't see any problems with it

Regards,
Alexey

-----
Alexey Demakov
TreeDL: Tree Description Language: http://treedl.sourceforge.net
RedVerst Group: http://www.unitesk.com


----- Original Message ----- 
From: <loic.lefevre at bnpparibas.com>
To: <antlr-interest at antlr.org>
Sent: Monday, July 25, 2005 2:33 PM
Subject: [antlr-interest] java.lang.OutOfMemoryError



Hello,
My grammar to handle expressions is now finished but now I'm facing a
strange behaviour:
When I try to validate hand typed expressions, I get the terrible
java.lang.OutOfMemoryError when
parsing the expression: //    (two chars)

Here is my grammar:
(See attached file: RosterExpression.g)

It appears that the lexer loops forever:

      public final void mSL_COMMENT(boolean _createToken) throws
RecognitionException, CharStreamException, TokenStreamException {
            int _ttype; Token _token=null; int _begin=text.length();
            _ttype = SL_COMMENT;
            int _saveIndex;

            match("//");
            {
            _loop59:


//--> begin of loop forever
            do {
                  if ((_tokenSet_0.member(LA(1)))) {
                        {
                        match(_tokenSet_0);
                        }
                  }
                  else {
                        break _loop59;
                  }

            } while (true);
//--> end of loop forever


            }
            {
            switch ( LA(1)) {
            case '\n':
            {
                  match('\n');
                  break;
            }
            case '\r':
            {
                  match('\r');
                  {
                  if ((LA(1)=='\n')) {
                        match('\n');
                  }
                  else {
                  }

                  }
                  break;
            }
            default:
                  {
                  }
            }
            }
            if ( inputState.guessing==0 ) {
                  _ttype = Token.SKIP; newline();
            }
            if ( _createToken && _token==null && _ttype!=Token.SKIP ) {
                  _token = makeToken(_ttype);
                  _token.setText(new String(text.getBuffer(), _begin,
text.length()-_begin));
            }
            _returnToken = _token;
      }


Thanks in advance for your help.
Loïc

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