The files under this directory are generated! Do not edit! To generate these files, use the grammar files at https://github.com/antlr/grammars-v4/tree/4f16c947878c303da520e21ac75272eb8443fc2f/antlr/antlr4. We make the following modification: 1. Merged LexerAdaptor.h/cpp and LexBasic.g4 with ANTLRv4Lexer.g4. 2. Fix grammar to work with C++ following https://github.com/antlr/grammars-v4/issues/2239.