jlox

Java implementation of the lox language from Crafting Interpreters.

Overview

Lox is a dynamic language featuring:

• control flow
• lexical scoping
• higher order functions
• closures
• classes
• single inheritence

Here is a little taste of the language and syntax

// Calculates the nth fibonacci number
fun fibonacci(n) {
  if (n <= 1) return n;
  return fibonacci(n - 2) + fibonacci(n - 1);
}

for (var i = 0; i < 20; i = i + 1) {
  print fibonacci(i);
}

class A {
  method() {
    print "A method";
  }
}

class B < A {
  method() {
    print "B method";
  }

  test() {
    super.method();
  }
}

class C < B {}

C().test();  // prints "A method"

Building

make build

Running

make lox to start the REPL or make lox SCRIPT=PATH_TO_LOX_FILE to run a script.