# Crafting Interpreters

Implementing [Crafting interpreters](https://craftinginterpreters.com) for the
[FHNW](https://www.fhnw.ch) [PL-Circle](https://github.com/fhnw-pl-circle).

All dependencies for running the respective implementations are specified in the
`flake.nix` files within the project folders (look for the key `buildInputs`).
Though my recommendation is to use the provided
[nix flakes](https://nixos.wiki/wiki/Flakes).

## [Java Implementation](./java/lox-interpreter/)

Implementation of the tree-walk interpreter in java after the book.

Run `mvn package` to create an executable jar file in the `target` directory and
`mvn exec:java@jlox` to get a repl.

Run `mvn exec:java@generate-ast` to generate the expression class.

## [Rust implementation](./rust/rox/)

Implementation of the tree-walk interpreter in rust.

Use `cargo run -- <ARGS>` to run the interpreter directly from the source code.
Specify needed arguments in place of `<ARGS>`.

```
Usage: rox <COMMAND>

Commands:
  compile  Compile a Lox source file
  repl     Run a Lox REPL
  help     Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version
```