The whole compiler and the vast majority of the runtime are in C++. This module is intended to integrate with the compiler, and uses the compiler's own parsing

The whole compiler and the vast majority of the runtime are in C++. This module is intended to integrate with the compiler, and uses the compiler's own parsing code. That said, there are Swift bindings available as a separate library: https://github.com/apple/swift-syntax https://github.com/apple/swift-syntax