Rusp

This is technically 2 lisp interpreters in one repo, which share a lexer and parser: a tree-walker, and bytecode-compiler/vm. The following will be focussed on the bytecode compiler/vm:

Features

• variable declarations
• function declarations
• recursion
• closures
• first-class functions
• printing
• quoting (not super stable but basically works)
• conditionals
• basic arithmetic
• basic list operations: cons, car, cdr etc.
• lambdas (via fn)
• garbage collection
• macros (the tree-walker has them, but the bytecode compiler/vm doesn't yet)

Usage

Assuming you have the rust toolchain installed:

# the `--bin ruspc` is necessary to run the bytecode compiler/vm, use `--bin ruspt` to run the tree-walker

# run the repl
cargo run --bin ruspc

# run a file
cargo run --bin ruspc -- <path-to-file>