Hi.

I'm having trouble defining a grammar. What I want is to be able to parse Java type names that may also have wildcards ('*' and '..' both mean any characters but in different ways - the code around the parser will take care of the interpretation).

So for example, I want to be able to parse:

• MyClass
  
• com.foo.MyClass
  
• com..MyClass
  
• com.foo.My*
  
• com..*Class
  
• ..MyClass
  
• etc
  

My lexer and parser are:

			

			class MyParser extends Parser;
			

			options {
			

			k = 2;
			

			exportVocab=myVocab;
			

			defaultErrorHandler = false;
			

			buildAST = true;
			

			}
			

			

			typeExpression
			

			:
			

			TypePattern
			

			EOF!
			

			;
			

			

			class MyLexerLexer extends Lexer;
			

			options {
			

			exportVocab=spooky;
			

			k=4;
			

			charVocabulary='u0003'..'uFFFF';
			

			defaultErrorHandler=false;
			

			}
			

			

			WS:
			

			( ' '
			

			| ' '
			

			| 'f'
			

			// handle newlines
			

			| ( options {generateAmbigWarnings=false;}
			

			: "
			

			"  // Evil DOS
			

			| '
			

			'    // Macintosh
			

			| '
			

			'    // Unix (the right way)
			

			)
			

			{ newline(); }
			

			)+
			

			{ _ttype = Token.SKIP; }
			

			;
			

			

			TypePattern:
			

			(TypeQualifierSegmentPattern)*
			

			TYPE_NAME_INITIAL_CHARACTERS (TYPE_NAME_SUBSEQUENT_CHARACTERS)*
			

			;
			

			

			protected TypeQualifierSegmentPattern:
			

			(
			

			'.'
			

			| TYPE_NAME_INITIAL_CHARACTERS (TYPE_NAME_SUBSEQUENT_CHARACTERS)*
			

			) '.'
			

			;
			

			

			protected TYPE_NAME_INITIAL_CHARACTERS:
			

			'a'..'z' | 'A'..'Z' | '_' | '$' | '*'
			

			;
			

			

			protected TYPE_NAME_SUBSEQUENT_CHARACTERS:
			

			TYPE_NAME_INITIAL_CHARACTERS | '0'..'9'
			

			;
			

		

This gives me a nondeterminism warning:

			

			[antlr] ANTLR Parser Generator   Version 2.7.2   1989-2003 jGuru.com
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39: warning:lexical nondeterminism upon
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39:     k==1:'$','*','A'..'Z','_','a'..'z'
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39:     k==2:'$','*','0'..'9','A'..'Z','_','a'..'z'
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39:     k==3:'$','*','0'..'9','A'..'Z','_','a'..'z'
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39:     k==4:
			,'$','*','0'..'9','A'..'Z','_','a'..'z'
			

			[antlr] /Users/lance/Documents/workspace/Test/src/MyParser.g:39:     between alt 1 and exit branch of block
			

		

Can anyone help me to disambiguate this - simply suppressing the warnings doesn't help - when I try to parse 'Bob' I get "Expecting '.' found 'EOF'" errors.

Regards

Lance