Fast & Easy ASTs for Flexible Embedded Interpreters

Self-hosted software language systems need to bootstrap core components such as data structure libraries, parsers, type checkers, or even compilers. Bytecode interpreters can load byte code files, while image-based systems can load in images of entire systems — Emacs, for example, does both. Bootstrapping is more of a problem, however, for traditional AST-based systems, especially when they must be portable across multiple host systems and languages.