huskeme 🐺

A simple scheme interpreter including good error messages and an interactive Repl.

I tried to base the implemented features as close as possible to the r7rs language standard.

Usage

Evaluate a file with huskeme <file> and launch the Repl with huskeme

Lang-features

• Data types: identifiers, lists (also dotted), functions, integers, strings, booleans
• Assigning and mutating variables
• Conditionals
• Closures using a variable number of arguments
• I/O, including loading files

Features

Nice error messages using diagnose

Repl with tab-completion using haskeline

:help lists all available commands in the Repl, tab-completion lists all available symbols in the environment

Basic standard library

The stdlib can be loaded using (load "<path>/lib.scm") to use higher level concepts like mapping/folding etc. This list is not extensive.

Tests

The test-suite combines unit-tests with snapshot-tests from fixtures/

Todo

• Tail-call optimization
• LLVM Jit backend
• Macros