[antlr-interest] Test dynamic scope presence

[The Researcher]

Hi Joel,

If I understand your basic problem you are just trying to spy on the method
calls.

While it is probably possible to use dynamic scopes have you considered a
global scope.

Personally, when I debug a few rules for a special case, I just modify the
source code directly after ANTLR generates it. I also stick the spying
support methods in a separate package and make calls to it.

Hope that helps,

Eric