TinyLang Documentation

A complete educational programming language with interpreter, bytecode compiler, virtual machine, debugger, formatter, linter, and more.

Interpreter Bytecode Compiler Virtual Machine Debugger Formatter Linter Test Runner Web IDE Module System 60+ Stdlib Functions

Hello, TinyLang!

// Your first TinyLang program
let name = "World"
print("Hello, " + name + "!")

// Functions with closures
fn makeGreeter(greeting) {
  return (name) => greeting + ", " + name + "!"
}

let hi = makeGreeter("Hi")
print(hi("TinyLang"))  // Hi, TinyLang!

Explore

Getting Started

Install TinyLang, write your first program, and explore the CLI tools.

Language Reference

Complete syntax guide covering variables, functions, classes, control flow, and more.

Standard Library

60+ built-in functions for I/O, math, strings, arrays, types, and utilities.

Architecture

Learn how the lexer, parser, compiler, and VM work together.

Examples

Gallery of example programs demonstrating every language feature.

CLI Reference

Every command documented: run, compile, debug, fmt, lint, test, and more.

Language Features

Feature	Description
Variables	`let` and `const` declarations with type inference
Functions	Named functions, arrow functions, closures, default parameters
Classes	Inheritance, constructors, methods, `this` binding
Control Flow	`if/else`, `while`, `for..in`, `match/when`, `break`, `continue`
Data Types	Numbers, strings, booleans, null, arrays, objects
Operators	Arithmetic, comparison, logical, string concatenation, power (`**`), conditional (`cond ? a : b`)
Modules	`import` statements for code organization
Testing	Built-in `test` blocks with assertion functions
Ranges	`0..10` syntax for numeric ranges

Complete Toolchain

Tool	Command	Description
Run	`tinylang run`	Execute source files with the tree-walk interpreter
Compile	`tinylang compile`	Compile to optimized bytecode (.tinyc)
Execute	`tinylang exec`	Run compiled bytecode on the VM
Debug	`tinylang debug`	Interactive step debugger with breakpoints
Format	`tinylang fmt`	Auto-format source code
Lint	`tinylang lint`	Static analysis with auto-fix
Test	`tinylang test`	Run test suites with built-in test runner
REPL	`tinylang repl`	Interactive read-eval-print loop

Getting Started →