lisp-rs

This is a lisp interpreter written in Rust.

$ cargo run -r examples/mandelbrot.scm

To compile for RISC-V 32, use a option -c.

The compiler outputs out.bin and out.elf. A file out.bin is raw instructions. A file out.elf is instructions formatted by ELF.

Note that it is experimental, therefore the compiler fails or outputs invalid code.

$ cargo run -r -- -c source.scm

Testing

$ cargo test

To test the compiler, add a feature flag rv32emu-test.

Note that it uses rv32emu as a submodule.

$ cargo test --features rv32emu-test

Features

• Basic form and functions (define, if, +, -...)
• Macros
• Statically typed with type inference
• Human readable errors (like rustc)
• REPL
• Optimizing tail recursion
• Generate code for RISC-V (WIP)

Milestones

• [x] Run FizzBuzz
• [x] Draw Mandelbrot set
• [x] Support statically type system with inference.
• [x] Compiler for RISC-V
• [ ] Implement a lisp interpreter running in lisp-rs.

Reference

• https://schemers.org/Documents/Standards/R5RS/HTML/
• https://cs61a.org/articles/scheme-spec/