[antlr-interest] Not generating parts of AST (argh!)

Paul J. Lucas pauljlucas at mac.com
Sun Oct 24 20:56:20 PDT 2004


On Sun, 24 Oct 2004, Monty Zukowski wrote:

> Maybe I'm missing something, but isn't that equivalent to
> 
> comparisonExpr:
> 	rangeExpr (comparisonOp^ rangeExpr)?;

	Ideally, yes.  However, ANTLR complains about having ^ on
	non-terminals:

		ANTLR Parser Generator   Version 2.7.2   1989-2003 jGuru.com
		XQueryParser.g:2015:33: rule classDef trapped:
		XQueryParser.g:2015:33: unexpected token: ^
		error: aborting grammar 'XQueryParser' due to errors
		Exiting due to errors.

	- Paul



 
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