Ein is a simple, dynamically-typed programming language, inspired by Rust (in which the interpreter is written), Lua and Wren.
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!
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!
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_treewalk |
A simple tree-walking interpreter. Not currently being developed. |
ein_vm |
A stack-based virtual machine. Incomplete, but can run some basic expressions. |