[antlr-interest] help understanding the parsing error

[Mikhail Kruk]

I have a very simple grammar (attached, but here's the relevant part):


start
	:	(simple_expression | dotted_identifier)*
	;

simple_expression
	:	'XYZ' 'HAHA'
	;

identifier
	:	ID	
   	;

dotted_identifier
	:	identifier ( DOT identifier )*
	;

It pretty much works as expected, accepting "XYZ HAHA", "BLAH.TEST"
and "ABC".  But when I try to parse "XYZ.A" or "A.XYZ" it gets
confused trying to apply simple_expression to 'XYZ'.  I don't
understand why this is happening.  Shouldn't backtracking tear right
through this?

Thanks!
-m
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