SIOD

Scheme In One Defun (or "Scheme In One Day") is a small-footprint implementation of the Scheme programming language, written in C and designed to be embedded inside C programs. It was originally written by Professor George J. Carrette at Boston University as a demonstration in a laboratory.

Features

* SIOD implements the original version of Scheme from the Lambda Papers, but it does not implement any of the modern language standards.
* SIOD represents a very early use of conservative garbage collection in a Lisp interpreter, a technique which was later copied by SCM and Guile.
* Compilation is implemented by emitting a fixed machine code prologue followed by a fast-loading binary representation of the parse tree to be interpreted.

Applications

* GIMP used SIOD as its primary extension language, Script-Fu, until version 2.4 was released.
* SIAG (Scheme in a grid) is a spreadsheet application using SIOD as a base.

External links

* [http://alum.mit.edu/www/gjc/siod.html The SIOD home page]