The CParser4 Python parser files (CLexer.py, CParser.py, CListener.py)
were generated 7 years ago with ANTLR 4.7.1.
Meanwhile, pip-requirements.txt pins antlr4-python3-runtime to version
4.9 in commit 4a7dd50, but the files were patched, not fully
regenerated. This version mismatch could result in failures when
running against non-trivial C code.
This change regenerates the CParser4 files with ANTLR 4.9 to resolve
the version mismatch. It also updates import statements to correctly
reference Eot instead of Ecc.
Steps used to regenerate the files:
1. Download the ANTLR 4.9 complete tool JAR:
- `https://www.antlr.org/download/antlr-4.9-complete.jar`
2. Generate Python3 parser files
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
0cdbc92544