My two cents worth.
I prefer rewrites as I can create virtual tokens.
Regards
Gary
expr
: or -> ^(EXPR or)
;
or : (and -> and)
(
OR b=and -> ^( LOGICAL_OR $or $b )
)*
;
and : (atom -> atom)
(
AND b=atom -> ^(LOGICAL_AND $and $b)
)*
;
atom
: id
;
id : ID;
ID : 'a'..'z';
AND : '&';
OR : '|';
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