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๐Ÿ• A little programming language written in Rust

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Disclaimer: This language is a toy project, and is not currently under active development - you may be looking for the ein-lang/ein repo instead, which is a seperate project by a different developer! If this project starts up again, I will change the name to avoid confusion :)

๐Ÿ• Ein

Build Status

Ein is a simple, dynamically-typed programming language, inspired by Rust (in which the interpreter is written), Lua and Wren.

Status

Extremely, extremely work-in-progress - I'm developing this project following the exercises in Bob Nystrom's wonderful Crafting Interpreters book. Hopefully something interesting and/or vaguely usable will come out of it!

Example

fn sayHello(name) {
    return "Hello, " + name + "!";
}

let greeting = sayHello("Ein");

print(greeting);

The above syntax is subject to change - I'll try to keep it in sync with the latest version of the code!

Project Structure

This project is made up of several Rust crates:

Crate Description
ein The top level crate, containing a command line interface and REPL.
ein_syntax Contains a hand-written lexer and LALRPOP-generated parser for the language's syntax.
ein_vm A stack-based virtual machine. Incomplete, but can run some basic expressions.

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