I have found out that I can catch errors during parsing by overwriting displayRecognitionError, but how do I find the parent "node" of this error?

ex. if I have the grammar: prog: stat expr; stat: STRING; expr: INTEGER;

And give it the input "abc def".

Then I will get an error at "def" which should be an integer. At this point I then want to get the parent which is "expr" (since it fails inside the INTEGER part) and it's parent "prog". Kind of like printing stack trace in java.

I tried to look at the node from RecognitionException parsed to displayRecognitionError, but it is null, and using CommonErrorNode the parent is null.

Should I maybe take a completely different approach?