cl-blc is a library and a CLI tool for working with Binary Lambda Calculus.

cl-blc read-s, eval-uates and (pretty-) print-s Binary Lambda Calculus expressions. Also includes a CLI tool for compilation of BLC (both one-bit and eight-bit encoding) to standalone executables and running it interactively.

See for more context:

• https://tromp.github.io/cl/cl.html
• https://justine.lol/lambda/

Getting Started

Clone the Git repository:

git clone --recursive https://github.com/aartaka/cl-blc ~/common-lisp/

And then load :cl-blc in the REPL:

(asdf:load-system :cl-blc)
;; or, if you use Quicklisp
(ql:quickload :cl-blc)

No dependencies required, it’s all plain ANSI Common Lisp.

To make a CLI tool:

cd /path/to/cl-blc/
make blc

And then use it like

$ ./blc compile /path/to/cl-blc/example/first.blc
$ ./first input.txt
h
# or just provide input interactively, terminating with null char (Ctrl-D)
$ ./first
hello
# Ctrl-D
h

Examples

See ./source/package.lisp and docstrings for usage examples.