maximum recursion depth exceeded while calling a Python object

[jaysneg]

if pattern string contains more then 500 items it fails with RecursionError

if hasattr(listener, "enterObservationExpressionOr"):

RecursionError: maximum recursion depth exceeded while calling a Python object

[delliott90]

We ran into a similar problem with one of our projects. I think it's a limitation of Antlr and Python. We solved the problem but increasing the recursion limit. The original issue related to Antlr can be found at antlr/antlr4#984