Grammar Example (Expr.g4)
grammar Expr;
prog: (expr NEWLINE)* ;
expr: expr ('*'|'/') expr
| expr ('+'|'-') expr
| INT
| '(' expr ')'
;
NEWLINE : [\r\n]+ ;
INT : [0-9]+ ;
Generating the visitor
To generate a Visitor, or to disable a visitor for your ...