LispKit

Summary: Build your own Lisp !
Author: Stéphane Rollandin
Owner: Stéphane Rollandin (spfa)
Co-maintainers: <None>
Categories:
Homepage: http://www.zogotounga.net/comp/squeak/lispkit.htm
PackageInfo name: LispKitInfo
RSS feed:

Description:

a kit for building one's own custom Lisp implementation

provides:

1) LispKernel, a minimal Lisp-2 interpreter with
- dynamic scoping
- all fundamental special forms: let, setq, and, or, if, defun, defmacro ...
- 100+ basic functions: list, car, funcall, null ...
- catch/throw, unwind-protect
- a GUI

2) SLisp, an experimental Lisp dialect tightly integrated with Smalltalk

3) ULisp, a Scheme implementation

usage:

by subclassing LispKernel one can implement a custom dialect of Lisp.
see SLisp, CLisp and ULisp as examples

specificities

LispKernel is implemented as a pure Smalltalk extension: there is no parser nor compiler.
Lisp code can be written as plain Smalltalk arrays.

advantages:
- we have a tight integration between Lisp and Smalltalk
- chasing the reference to a symbol can be done via alt-n
- we can use the debugger to debug Lisp code
- even continuations become easy to implement (see ULisp)

... see LispKernel class (and subclasses) comments for more

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