@mike-lischke/antlr-tgen

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A generator for antlr-ng runtime test cases

24 lines (18 loc) • 284 B

Plain Text

[type]
Parser

[grammar]
grammar T;
s : a ;
a : {<False()>}? ID  {<writeln("\"alt 1\"")>}
  | {<True()>}?  INT {<writeln("\"alt 2\"")>}
  ;
ID : 'a'..'z'+ ;
INT : '0'..'9'+;
WS : (' '|'\n') -> skip ;

[start]
s

[input]
x

[errors]
"""line 1:0 no viable alternative at input 'x'
"""