There are keywords like "NO-UNDO", "BUFFER-COPY" in the language which I'm writing a parser for. ANTLR Manual says "any double-quoted string used in a parser is automatically entered into the literals table of the associated lexer". But when I write in my .g file like this:

			

			keyword:
			

			"NO-UNDO" | "BUFFER-COPY" | "NO-LOBS" | "NO-ERROR" | ...
			

		

and rules like this:

			

			usestate
			

			:        "USE"^ expression ("NO-ERROR")? state_end
			

			;
			

			

			state_end
			

			:        PERIOD
			

			;
			

			

			PERIOD        :        '.'
			

			;
			

		

ANTLR generates MyTokenTypes.java like this:

			

			public interface MyTokenTypes {
			

			...
			

			// "NO-UNDO" = 41
			

			...
			

			}
			

		

How to recognize the keyword with ANTLR?