NyxCode/Ketamine

embedded dynamically typed scripting language

ketamine

dynamic embeddable scripting language, written in rust.

types

integer = 1;
float = 3.14;
boolean = true;
string = "hello world!";
array = [1, 2, 3];
object = { key: "value" };
fib = function(n) {
   if (n < 3) {
       1
   } else {
       fib(n - 2) + fib(n - 1)
   }
};

control flow

age = if (person.age < 15) {
  "child"
} else if (person.age < 18) {
  "adolescent"
} else {
  "adult
};

for (person in people) {
  print("Hello", person.first_name);
};

result = while (true) {
  next = try_again();
  if (next != null) {
      break next;
  };
}

features

• embeddable & extendable

  fn abs(this: i64, args: Vec<Value>) -> Result<Value, String> {
      Ok(Value::Integer(this.abs()))
  }
  
  interpreter.prototype_function("abs", abs);
  assert_eq!(interpreter.eval("-10.abs()").unwrap() == Value::Integer(10));

• first-class functions
• implicit return

  with_return    = function() { return 1; };
  without_return = function() { 1 };
  

• implicit this

  counter = {
      count: 0,
      increment: function() {
          this.count = this.count + 1;
      }
  };
  counter.increment();
  

• extend types using prototypes

  $integer.abs = function() {
      if (this < 0) {
          -this
      } else {
          this
      }
  }
  

• range expressions

  for (x in 0..10) { ... };