[antlr-interest] Gated semantic predicates behaving like validating predicates
Gavin Lambert
antlr at mirality.co.nz
Sun Feb 3 11:24:54 PST 2008
At 01:21 4/02/2008, Steve Bennett wrote:
>
>ESCAPED_PUNC : {in_noparse}? => '#' | '*' | ':' | ';' | '|'
|
>'[' | ']' | '=' | '/';
>
>
>HASH : {!in_noparse}? => '#';
>ASTERISK : {!in_noparse}? => '*';
Given that you're matching the same characters in both, I'd turn
this around:
HASH : '#' { if (in_noparse) { $type = ESCAPED_PUNC; } };
...
Seems simpler.
Or even just leave it as a HASH and deal with the difference in
the parser instead, but that depends on how your grammar is
structured.
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