Roll A Lisp In C – Reading (2020)

• mal

  96 9,854 0.0 Assembly

  mal - Make a Lisp

I’m not really sure how you would be able to write an interpreter without a parser, since you need to know what the user is trying to do. For a more complete tutorial there is Make-A-Lisp (mal) [0] that has steps for making a lisp in various (including JavaScript) and has a process guide [1] to get started.

[0] https://github.com/kanaka/mal

[1] https://github.com/kanaka/mal/blob/master/process/guide.md

• mark-sweep

  12 709 10.0 C

  A simple mark-sweep garbage collector in C

Seconding the Make-A-Lisp and Crafting Interpreters recommendations. This post is also really great, it contains a hard written parser that you may learn from.

You mentioned you want to write your lisp in javascript so you'll be getting quite a lot of functionality for free: memory allocation and garbage collection. Just in case anyone reading is going to write in C, here's an excellent introduction to the topic:

https://journal.stuffwithstuff.com/2013/12/08/babys-first-ga...

Don't forget to spill the registers.

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