[antlr-interest] greedy/non-greedy problem.
Mark Lentczner
markl at glyphic.com
Tue May 18 08:15:25 PDT 2004
On May 18, 2004, at 7:35 AM, Bharath wrote:
> myParserRule: IDENT DOT IDENT DOT (IDENT DOT)* IDENT;
The problem is that while normally a DOT must be followed by IDENT, the
second DOT doesn't have this issue (odd grammar, if you ask me, but
what do I know about what you're parsing...)
Try this:
myParserRule: IDENT DOT IDENT DOT (IDENT (DOT IDENT)*)? ;
Without knowing the rest of the grammar I can't say if this will solve
the issue. But, generally speaking, moving optional sections to the
end of a rule is better than having them in the middle.
- Mark
Mark Lentczner
markl at wheatfarm.org
http://www.wheatfarm.org/
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