Brolang

a sigma-certified programming language for the terminally online

Brolang is a real, functional programming language written in Rust. Every keyword sounds like it fell out of a TikTok comment section, but underneath the absurd vocabulary is a serious little compiler front-end and a tree-walking interpreter. The engineering is not stupid. The language very much is.

sigma aura = 100 bro

rizz mog(a, b) bro
    gyatt a + b bro
end bro

skibidi aura > 0 bro
    print("sigma aura detected") bro
    aura = aura - 1 bro
end bro

Install

Requires a recent Rust toolchain. Zero dependencies.

From source

git clone https://github.com/PrathamGhaywat/brolang.git
cd brolang
cargo build --release
./target/release/brolang --version

Install script

Downloads a prebuilt binary from GitHub Releases, falling back to cargo install.

# unix (linux / macos)
curl -fsSL https://raw.githubusercontent.com/PrathamGhaywat/brolang/main/scripts/install.sh | sh

# windows (powershell)
irm https://raw.githubusercontent.com/PrathamGhaywat/brolang/main/scripts/install.ps1 | iex

Run it

brolang                          # REPL
brolang examples/hello.bro       # run a file
brolang --help                   # usage
brolang --locked-in              # performance mode (vibes)

The docs

Architecture

Source Code
    ↓
Lexer            src/lexer.rs      text → tokens
    ↓
Parser           src/parser.rs     recursive descent → AST
    ↓
AST              src/ast.rs
    ↓
Interpreter      src/interpreter.rs  tree-walking evaluator
    ↓
Output           src/builtins.rs   print, yap, and friends