Hi.

I have a grammar, a small section of which is:

			

			class MyParser extends Parser;
			

			options {
			

			...
			

			defaultErrorHandler=false;
			

			...
			

			}
			

			

			...
			

			

			screenCreation[ErrorHandler errorHandler]:
			

			{   this.errorHandler = errorHandler; }
			

			(screen)+
			

			EOF!
			

			; exception
			

			catch [RecognitionException re] {
			

			handleException(re);
			

			}
			

			catch [TokenStreamRecognitionException tsre] {
			

			handleException(tsre.recog);
			

			}
			

			

			...
			

		

My intention is to handle errors during parsing with the error handler.

My problem is that the generated Java method for screenCreation looks like this:

			

			public final void screenCreation(ErrorHandler errorHandler)throws RecognitionException, TokenStreamException {
			

			returnAST = null;
			

			ASTPair currentAST = new ASTPair();
			

			AST screenCreation_AST = null;
			

			

			try {      // for error handling
			

			this.errorHandler = errorHandler;
			

			

			....
			

			}
			

			catch (RecognitionException re) {
			

			handleException(re);
			

			}
			

			catch (TokenStreamRecognitionException tsre) {
			

			handleException(tsre.recog);
			

			}
			

			returnAST = screenCreation_AST;
			

			}
			

		

My question is this: why does the method still declare that it throws RecognitionException when I have provided a handler for it in the grammar?

Regards,

Lance