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Various versions of the Lisp In Small Pieces interpreter -- in Coffeescript! #complete
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Elf M. Sternberg 39f6a09d51 [feat] Most throw/catch conditions work. 
I've hit a snag with respect to self-evaluating objects, and the ad-hoc evaluation of
program labels is messed up because of it.  I'm going to have to refactor.
Oddly enough, the strategy I hit upon appears to be the same one found
in Wisp, rather than Clojurescript.

This may actually be an internal detail; the version rendered for the user may actually
not care.  I hope not; the performance could become hairy pretty quickly.
 		2015-07-21 16:16:13 -07:00
bin Coffeescript attempt. 2015-05-13 22:28:55 -07:00
chapter-lambda-1 [chore] Lint-picked versions that pass all unit tests. 2015-07-08 15:14:05 -07:00
chapter1 [chore] Lint-picked versions that pass all unit tests. 2015-07-08 15:14:05 -07:00
chapter3 [feat] Most throw/catch conditions work. 2015-07-21 16:16:13 -07:00
docs [docs] Updated blog message with addenda from site. 2015-07-08 15:16:59 -07:00
extras [docs] Including Jenkins configuration file 2015-07-07 20:27:11 -07:00
test [feat] Most throw/catch conditions work. 2015-07-21 16:16:13 -07:00
.gitignore [feat] Most throw/catch conditions work. 2015-07-21 16:16:13 -07:00
LICENSE Coffeescript attempt. 2015-05-13 22:28:55 -07:00
Makefile [test] Added Coffeelint to list to of features. 2015-07-08 15:04:32 -07:00
README.md [docs] Updating the README to be more... well, just *more* 2015-07-07 20:19:04 -07:00
coffeelint.json [test] Coffeelint configuration file. 120 character line length is okay by me. 2015-07-08 15:06:06 -07:00
package.json [test] Added Coffeelint to list to of features. 2015-07-08 15:04:32 -07:00

README.md

A Collection of Interpreters from Lisp In Small Pieces, written in Coffeescript

Purpose

I don't know Lisp, so I figured the correct place to start was to write my own interpreter. After buying five different textbooks (The Structure and Interpretation of Computer Programs, aka "The Wizard Book", Friedman's The Essentials of Programming Languages, Let over Lambda, On Lisp, and one more) I decided Christian Quinnec's Lisp In Small Pieces gave the clearest step-by-step introduction.

Since I didn't know Lisp, my task was to translate what Quiennec wrote in his book into a language I did know: Javascript. Well, Coffeescript, which is basically Javascript with a lot of the syntactical noise removed, which is why I liked it.

Usage

I don't know if you're going to get much out of it, but the reader (which I had to write by hand, seeing as I didn't have a native Lisp reader on hand in my Javascripty environment), and each interpreter has a fairly standard test case that demonstrates that each language does what it says it does: you can do math, set variables, name and create functions, and even do recursion.

Notes

chapter-lambda-1 is not from Lisp In Small Pieces. It is a primitive CPS interpreter built on top of the interpreter from LiSP Chapter 1, using techniques derived from a fairly facile reading of Lisperator's "Implement A Programming Language in Javascript." But it was fun.

LICENSE AND COPYRIGHT NOTICE: NO WARRANTY GRANTED OR IMPLIED

See the LICENSE file.