Believe
Originally builty by Lucas S. Vieira <lucasvieira@protonmail.com>.
Introduction
Please note that this project is currently archived.
The goal of this project is to provide a fully-functioning implementation of the Bel language, proposed by Paul Graham. The main goal is not to provide performance; instead, it is supposed to be a didatic approach to implementing a Lisp interpreter.
The code here contained is also a study on how to build a Lisp interpreter from scratch in C. Given that Bel is so simple and is supposed to be a formalism before a commercial language, it seems like the perfect didatic resource to do so.
Here are some useful links with language resources:
- Paul Graham’s Bel release website
- Language Guide
- Language Source Code, written in Bel itself
- Bel examples
This project was also implemented as a proper book, so it is supposed
not only to be compiled, but also to be read. All the development was
made in the believe-literate.org file, though the book was exported to
LaTeX and the code was exported to a C source file.
Reading
This project was implemented as an experiment with literate
programming, so it can be read in PDF form. Just check the
believe-literate.pdf file, or check out believe-literate.tex to see a
LaTeX export of the book.
Alternatively, most Git services are able to render Org files
properly, so you can check believe-literate.org on your browser.
Compiling
All the compilation steps are done through a Makefile. You can refer
to further information within the chapter Tools and scripts on the
book.
Licensing
This code is distributed under the MIT License. See the book and the
LICENSE file for details.