crisp

(chris' lisp) v0.4

Lisp is very cool. Functional programming in lisp, also very cool. However, modern lisp implementations I find to be quite complex where lisp in essence is very simple. To help myself learn C++ a bit better, and to get into lisp a bit more, I decided to write this simple lisp interpreter.

Design goals:

• simply lispy: objects can point to other objects (symbols), contain a list of objects, or are a value (atom). Functions are lists of lists. Variables are immutable.
• small C++ library, with most standard library implemented in lisp.
• thread safety is a big advantage of using a lisp language due to the immutability of everything - so good thread capability is desired.

A run down of the language is available in DOC.md.

Installation

Easy-peasy for linux: clone, changedir, make, install:

git clone https://github.com/cbosoft/lisp-interpreter crisp
cd crisp
make
sudo make install

Requires a good C++ compiler (g++ works), and libedit, ncurses, pthread. It will not compile on Windows, and I haven't tried on MacOS (yet).

Thanks

Uses editline (libedit, BSD) for the REPL.

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