@mike-lischke/antlr-tgen/resources/descriptors/LeftRecursion/ReturnValueAndActionsAndLabels_3.txt

A generator for antlr-ng runtime test cases

[type]
Parser

[grammar]
grammar T;
s : q=e {<writeln("$e.v")>};
e returns [int v]
  : a=e op='*' b=e {$v = $a.v * $b.v;}  # mult
  | a=e '+' b=e {$v = $a.v + $b.v;}     # add
  | INT{$v = $INT.int;}        # anInt
  | '(' x=e ')' {$v = $x.v;}   # parens
  | x=e '++'    {$v = $x.v+1;} # inc
  | e '--'   # dec
  | ID {$v = 3;}      # anID
  ;
ID : 'a'..'z'+ ;
INT : '0'..'9'+ ;
WS : (' '|'\n') -> skip ;

[start]
s

[input]
1+2*3

[output]
"""7
"""