For my #DecemberAdventure, I’m going to have another go at working through “Crafting Interpreters” in Rust. The last time I tried this, I got to the end of Chapter 10.

For the parser, I’m going to use LALRPOP. I used it in my previous attempt at this, and I liked it.

In the previous post, we wrote a simple grammar that parses true or false as a boolean:

So far, we’ve got a grammar that can parse true, false and nil literals. In this post, we’ll add the ability to parse numbers.