This repo contains
├── generated
│   ├── plsqlLexer.py
│   ├── plsqlParser.py
│   └── plsqlVisitor.py
├── main.py
├── sample_files
│   └── create_tables_samples.sql
└── source_grammar
└── plsql.g4

main.py - File that contains code for modified Visitor
source_grammar - Contains grammar for plsql (courtesy: https://github.com/datacamp/antlr-plsql)
sample_files - Contains a sample file with plsql code (courtesy: https://github.com/antlr/grammars-v4)
generated - Contains code generated using ANTLR4 from the forementioned grammar
Generated using: antlr4 -visitor ./simple_source/plsql.g4 -no-listener -o generated/ -Dlanguage=Python3 -Xexact-output-dir

Command: python main.py ./sample_files/create_tables_samples.sql