VDX — The Voidware Programming Language

A fast, safe programming language built for AI and games. By Voidware.

What's in this repo

This monorepo contains two projects:

Folder	What it is
vdx/	The VDX language — lexer, parser, and interpreter written in C++17
website/	The official website (voidwarelang.xyz) — Next.js, deployed on Vercel

VDX Language (vdx/)

VDX is a class-based, interpreted language inspired by Java, C++, Rust, Python, and C#.

Current version: 0.0.12

Features

• class declarations — all code lives inside classes
• let variables (string, integer, float, bool) with reassignment
• const constants (cannot be reassigned)
• Optional type annotations: let x: int = 5;, let pi: float = 3.14;, const PI: float = 3.14;
• fn functions with parameters and return
• print() with expression evaluation
• Operators: + - * / % == != < > <= >= ++ --
• String concatenation with +
• this keyword for class-scope access
• if / elif / else control flow
• while loops with built-in safety protection
• for loops (C-style): for (let i = 0; i < n; i = i + 1) { ... }
• for-in loops over arrays: for (item in arr) { ... }
• Arrays: [1, 2, 3], index access/assignment, len(), push()
• Objects: new ClassName(), dot access (obj.field), dot methods (obj.method())
• Types: float literals, true/false booleans, runtime type checking
• Mixed int/float arithmetic with auto-promotion
• wait(ms) to pause execution
• @unsafe annotation to bypass loop protection
• break statement for exiting loops early
• continue statement for skipping to next loop iteration
• math module with functions: sqrt, pow, abs, sin, cos, tan, floor, ceil, round, min, max, random, pi
• import statement — import other VDX files: import "utils.vdx";
• type() — get type name as string: type(42) returns "int"
• input() — read user input: let name = input("Name: ");
• pop() — remove and return last array element: let last = pop(arr);
• len() — now works with objects too (returns field count)
• Modulo operator % for remainder calculations
• Increment ++ and decrement -- operators (prefix and postfix)
• Block scoping
• Improved error reporting with source context

Quick start

cd vdx
cmake -B build
cmake --build build
./build/vdx examples/hello.vdx

Install (Windows)

Download the .msi installer from voidwarelang.xyz/download. After installation, vdx is available in your terminal:

vdx myfile.vdx

Example

class Hello {
    let name: string = "VDX";
    const VERSION: float = 0.9;
    print("Welcome to", this.name, "v", VERSION);

    fn max(a, b) {
        if (a > b) { return a; }
        else { return b; }
    }

    print("max(3, 7) =", max(3, 7));

    // Arrays and for-in with break
    let langs = ["Java", "C++", "Rust", "Python"];
    for (lang in langs) {
        if (lang == "Rust") {
            break;  // Stop when we find Rust
        }
        print("Inspired by:", lang);
    }

    // C-style for loop with continue
    @unsafe for (let i = 0; i < 5; i = i + 1) {
        if (i == 2) {
            continue;  // Skip iteration 2
        }
        print("i:", i);
    }

    // Math module usage
    print("Square root of 16:", math.sqrt(16));
    print("Random number:", math.random(1, 100));
}

Docs

Full language documentation is in vdx/docs/ and on the website at voidwarelang.xyz/docs.

• vdx/docs/README.md — Language reference
• vdx/docs/CHANGELOG.md — Version history
• vdx/docs/TODO.md — Roadmap

Website (website/)

The official VDX website, built with Next.js 15 + Tailwind CSS 4.

Pages

• / — Home (hero, code preview, features)
• /download — Download the latest .msi installer + version archive
• /docs — Full language documentation (16 pages covering every feature)

Setup

cd website
npm install
npm run dev

Deploy

The site is configured for Vercel. Push to main and it deploys automatically.

Domain: voidwarelang.xyz

Repo structure

.
├── vdx/                    # VDX language
│   ├── src/                # C++ source (lexer, parser, interpreter)
│   │   └── modules/        # Built-in modules (math, etc.)
│   ├── examples/           # Example .vdx programs
│   ├── assets/             # Icon (SVG)
│   ├── installer/          # WiX MSI installer config
│   ├── docs/               # Language docs (README, CHANGELOG, TODO)
│   ├── CMakeLists.txt      # Build config
│   └── LICENSE.txt         # MIT
├── website/                # Official website (Next.js)
│   ├── src/app/            # Pages and layouts
│   ├── src/components/     # Shared components
│   └── package.json
├── .gitignore
└── README.md               # This file

License

MIT — see vdx/LICENSE.txt