Собственный интерпретатор

class Spaceship {}
var falcon = Spaceship();
print falcon;

$ ./your_program.sh run test.lox
Spaceship instance

// Creating multiple instances of the same class
class Robot {}
var r1 = Robot();
var r2 = Robot();
 
print "Created multiple robots:";
print r1;
print r2;

Created multiple robots:
Robot instance
Robot instance

class Wizard {}
class Dragon {}
 
// Instantiating classes in a function should work
fun createCharacters() {
  var merlin = Wizard();
  var smaug = Dragon();
  print "Characters created in fantasy world:";
  print merlin;
  print smaug;
  return merlin;
}
 
var mainCharacter = createCharacters();
// An instance of a class should be truthy
if (mainCharacter) {
  print "The main character is:";
  print mainCharacter;
} else {
  print "Failed to create a main character.";
}

Characters created in fantasy world:
Wizard instance
Dragon instance
The main character is:
Wizard instance

class Superhero {}
 
var count = 0;
while (count < 3) {
  var hero = Superhero();
  print "Hero created:";
  print hero;
  count = count + 1;
}
 
print "All heroes created!";

Hero created:
Superhero instance
Hero created:
Superhero instance
Hero created:
Superhero instance
All heroes created!