Reusable compiler components are really helpful. I made this example for parsing with ANTLR: https://github.com/empirical-soft/calculANTLR https://github.com/e

Reusable compiler components are really helpful. I made this example for parsing with ANTLR: https://github.com/empirical-soft/calculANTLR https://github.com/empirical-soft/calculANTLR It uses a C++ port of CPython's ASDL to define the AST.