lux-lang

What is Lux?

• Lux is a statically typed, stack-based programming language designed for learning and exploration.
• It is built from scratch in Rust with a custom virtual machine called Prism.
• Its purpose: to shine light through the chaos of runtime errors — with clarity, intention, and precision.

Goals of Lux

• Clarity over cleverness
• Static typing from the ground up
• Minimalist syntax, inspired by light and structure
• Built to learn, not necessarily to ship

✨ Features

• 🧠 Statically typed with Light, Lumens, Photon, Umbra
• 🔁 Control flow: for, if/else, switch, break, continue
• 🧮 Arithmetic, logic, and comparison operators
• 🧱 Facets (structs) and type aliases (Refraction)
• 🧵 Function declarations, closures, and return values
• 📦 Arrays with method-style operations (push, pop, indexing)
• 🔦 Function types (Function([T], T) or (T) -> T) for higher-order programming
• 🌌 Modular system using Constellation and import

🧪 Primitive Types in Lux

🧪 Examples

// Numeric and string
let x: Light = 42;
let name: Lumens = "Lux";

// Boolean logic
let isBright: Photon = true && false;

// Array
let numbers: [Light] = [1, 2, 3, 4];
emit numbers[2]; // emits 3

// Function type (Lambda)
let greet: () -> Umbra = fn() {
  emit "Hello from Lux!";
};
greet();

// Function definition
fn add(a: Light, b: Light) -> Light {
  return a + b;
}
let sum: Light = add(1, 2);

// Facet (struct)
Refraction Point Facet {
  x Light
  y Light
};

let p: Point = Point { x: 3, y: 4 };
emit p.x + p.y; // emits 7

// Type alias
Refraction Lambda Function([Light, Light], Light)

let add: Lambda = fn(a: Light, b: Light) -> Light {
  return a + b;
};

let sum: Light = add(1, 2);

🛠 Installation

You’ll need Rust installed. Then:

cargo install lux-lang

This will install two CLI tools:

• lux – the compiler (produces bytecode)
• prism – the virtual machine (runs bytecode)

🚀 Getting Started

Create a file called hello.lux:

constellation main;

fn Prism() {
  emit "Hello, world!";
}

Then compile and run it:

lux hello.lux

Or compile and run it with Prism manually:

lux hello.lux -o hello.prism
prism hello.prism

Made with ☀️ — Post Tenebras Lux