[antlr-interest] ANTLR v3 Syntax Questions: !, [squareBrackets]; Tree Building

[Steve Lianoglou]

> What do the trailing exclamation points mean?

If it's anything like the v2 syntax, they're used to tell the parser  
to "toss them" after they are scanned.

As in, they're not needed for the next step (building/walking the AST 
(?))

I guess it's the same as v2 since these exclamation points are tacked  
onto the ';' token.

HTH,
-steve