LeekScript 3

> LeekScript

LeekScript 3 is the third version of LeekScript, released on November 30, 2021.

Object literals

You can now declare anonymous objects with the following syntax:

And use them like a regular object:

These objects belong to the Object class and cannot have methods, apart from Object.keys() and Object.values(). You can add fields to them on the fly:

New reserved keywords

Here are all the keywords reserved from LeekScript 3 onward, which cannot be used to name a variable, a function, a class, a method, a field, etc. Not all of them are used in the language yet: some are set aside for future versions:

Reflection

The following reflection methods and fields are added:

Object.keys(): returns an array of the object's keys (or fields), as strings:
{ x: 1, y: 2 }.keys() === ['x', 'y'].
Object.values(): returns an array of the object's values:
{ x: 1, y: 2 }.values() === [1, 2].
Class.name: returns the name of the class.
Class.super: returns the superclass of the class, or null if it has none.
Class.fields: returns an array of the class's fields (as strings):
class A { a b } A.fields === ['a', 'b'].
Class.staticFields: returns an array of the class's static fields (as strings):
class A { static c static d } A.staticFields === ['c', 'd'].
Class.methods: returns an array of the class's methods (as strings):
class A { m() {} n() {} } A.methods === ['m', 'n'].
Class.staticMethods: returns an array of the class's static methods (as strings):
class A { static o() {} static p() {} } A.staticMethods === ['o', 'p'].

Base classes

Base classes are introduced into the language:

Value: class of all values
Null: class of null values
Boolean: class of the boolean values true and false
Number: class of numeric values
Real: class of real numbers: 12, 5.571, etc.
Integer: class of integers: 12, -5, etc.
Array: class of arrays: [1, 2, 3], etc.
String: class of strings: "hello", etc.
Object: class of objects: { x: 12 }, etc.
Function: class of functions: function() {}
Class: class of classes: Number, Array, MyClass, etc.
JSON: class reserved for JSON
System: class reserved for the system

So you can create values with these classes:

And use instanceof: