@mike-lischke/antlr-tgen/resources/descriptors/LeftRecursion/MultipleAlternativesWithCommonLabel_2.txt

A generator for antlr-ng runtime test cases

[notes]
This is a regression test for antlr/antlr4#433 "Not all context accessor
methods are generated when an alternative rule label is used for multiple
alternatives".  https://github.com/antlr/antlr4/issues/433

[type]
Parser

[grammar]
grammar T;
s : e {<writeln("$e.v")>};
e returns [int v]
  : e '*' e     {$v = <Cast("BinaryContext","$ctx"):SubContextLocal({<Production("e")>(0)}, {<Result("v")>})> * <Cast("BinaryContext","$ctx"):SubContextLocal({<Production("e")>(1)}, {<Result("v")>})>;}  # binary
  | e '+' e     {$v = <Cast("BinaryContext","$ctx"):SubContextLocal({<Production("e")>(0)}, {<Result("v")>})> + <Cast("BinaryContext","$ctx"):SubContextLocal({<Production("e")>(1)}, {<Result("v")>})>;}  # binary
  | INT{$v = $INT.int;} # anInt
  | '(' e ')'   {$v = $e.v;}     # parens
  | left=e INC  {<ContextRuleFunction(Cast("UnaryContext","$ctx"), "INC()"):Concat(" != null"):Assert()>$v = $left.v + 1;}      # unary
  | left=e DEC  {<ContextRuleFunction(Cast("UnaryContext","$ctx"), "DEC()"):Concat(" != null"):Assert()>$v = $left.v - 1;}      # unary
  | ID {<AssignLocal("$v","3")>}        # anID
  ;
ID : 'a'..'z'+ ;
INT : '0'..'9'+ ;
INC : '++' ;
DEC : '--' ;
WS : (' '|'\n') -> skip;

[start]
s

[input]
1+2

[output]
"""3
"""