Loxy

Another Rust implementation of the Lox programming language

AST interpreter

Supported types

• Nil
• Boolean
• Number (float64)
• String (UTF8 string),
• Functions (first class)

Features

• repl
  • expressions
  • statements
• print
• variables
• scope
• conditionals
• logic
• while
• for
• functions
  • closures
  • lambdas
• classes

Examples

fun makeCounter() {
  var i = 0;
  fun count() {
    i = i + 1;
    print(i);
  }

  return count;
}

var counter = makeCounter();
counter(); // 1
counter(); // 2

fun thrice(fn) {
  for (var i = 1; i <= 3; i = i + 1) {
    fn(i);
  }
}

thrice(fun (a) {
  print(a);
});
// 1
// 2
// 3