This repo is an attempt to learn how compilers work by translating Jack W. Crenshaw's Let's Build a Compiler book into Swift Playgrounds.
🗺️ How to Navigate
The original book is divided into 16 chapters and if you haven't noticed already, there are also 16 Playground files in this repo.
Each Playground file represents a chapter in the book. However, because fitting an entire chapter into a single Playground file would be impractical, each chapter has been divided into several "Parts".
.playground file is actually composed of three directories.
Parts- individual parts of a book resides in
Cradle.swift, which contains all the boilerplate code used throughout the book is contained here
Resource- the original LBaC text file
tutor(n).txt, is contained here
If you can't seem to find these directories after opening your
⌘ + 0to show the Navigator (left panel).
- The original Let's Build a Compiler (LBaC) was written in Turbo Pascal, a very popular language at the time. Pascal is very different from Swift and because of this, "literally" converting Pascal code into Swift is quite unnatural.
- To make the code as "Swifty" as possible, I have taken the liberty to make some changes in the code. Please feel free to offer suggestions on making the code even "Swifty-er"
- This has turned out to be more time consuming than I have imagined in the beginning. Therefore, out of the 16 chapters, 10 have been completed so far; feel free to continue on from where I have left off
This is an open source project so feel free to contribute by