focusaurus / chapped-lisp

Lisp interpreter for Recurse Center application

Chapped Lisp

Overview

This is a basic lisp interpreter project done as part of an application to The Recurse Center.

Gaping Holes

There is near-zero error handling of invalid syntax and zero code to generate helpful error messages so far. If you provide invalid lisp syntax, at the moment, You're Gonna Have a Bad Time™.

CLI Usage

• node ./code/cli.js '(+ 1 2)'

Usage from node.js code

const chapped = require("chapped-lisp");
console.log(chapped("(+ 42 43)"));

Command Line Usage

npm install chapped-lisp
npx chapped-lisp '(max 43 42)'
# prints 43

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For npm prior to v5.2:

npm install chapped-lisp
$(npm bin)/chapped-lisp '(max 43 42)'

Developer How To...

• Setup after clone
  • Install node.js
    • Use the version specified by the .nvmrc file
    • nvm recommended
  • npm install
• Run all tests: npm test
• Analyze code coverage: npm run coverage
• Run some tests: tap code/cli-tap.js code/lex-tap.js
• Run lint: npm run lint
• Run the main CLI: node ./code/cli.js '(+ 1 2)'