ericvergnaud/antlr4 — pull request #1 by alancarson (2014-06-04 13:15:17+00:00)
Title: antlr4 - python2-runtime changes for ParseTreeVisitor and TraceListener

Implementation of ParseTreeVisitor and TraceListener in python2-runtime. Addition to Python2 target for visitor support.

Logic/naming based on the Java implemention. Conformance to pep8 on new
python code.