Crisp

Crisp is one of Lisp dialect which is based on mal and implemented with Crystal. This project is a toy box for my dynamic language ideas.

So Many Tasks

• Refactorings
  • Make is_a? guards more elegant
  • Import test cases from Mal
  • Add CI
  • More OOP (evaluator, remove global variable, move states into object)
  • Use standard readline implementation
  • Better lexer and parser
  • Add examples
  • More convenient REPL (e.g. completion)
• New language features using Crystal's semantics
  • Algebraic data type
  • ...

Installation

1. Install crystal command (instruction)
2. $ crystal run /path/to/Crisp/crisp.cr

Examples

Please see mal test cases for now.

Development Environment

• OS X
• Crystal 0.7.1 ~ 0.7.3 or 0.7.7 ~ 0.11.0 or 0.17.4

License

Distributed under the MIT License.

Copyright (c) 2015 rhysd