Gonu

A small, embeddable scripting language with functions, closures, and arrays.

fun greet(name) {
  print "Hello, " + name + "!"
}

greet("Ada")

Install

npm install gonu

CLI usage

gonu examples/hello.my

Embed in your app

const { run } = require("gonu");

const output = [];
run(`
  fun square(n) { return n * n }
  print square(12)
`, {
  print: (line) => output.push(line),
});

console.log(output); // ["144"]

Language features

• Functions with closures and recursion
• Arrays, indexing, for…in
• if / else if / else
• while and for loops with break / continue
• Strings, numbers, booleans, null
• Builtins: len, push, pop, range, str, int, num, type
• Safety: no eval, step limit, memory cap

API

run(source, options)

• source — string of Gonu code
• options.print — called with each line of output (default: console.log)
• options.input — called when the program calls input()
• options.maxSteps — execution step limit (default: 100000)
• options.maxArrayLen — array size limit (default: 100000)

Returns { vars, steps }.

License

MIT