LeekScript 3

LeekScript 3

> LeekScript

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

Object Literals

It is now possible to declare anonymous objects with the following syntax:

And to use them as a classic object:

These objects have as class the class Object and cannot have methods, except Object.keys() and Object.values(). It is possible to add fields to them on the fly:

New reserved keywords

Here are all the reserved keywords from LeekScript 3, to name a variable, a function, a class, a method, a field etc. They are not all used in the language but are in anticipation of future versions:

Reflection

The following methods and fields of reflection are added:

• Object.keys(): returns an array of keys (in the form of character strings) of the keys (or fields) of the object:
• { x: 1, y: 2 }.keys() === ['x', 'y'].
• Object.values(): returns an array of object values:
• { x: 1, y: 2 }.values() === [1, 2].
• Class.name: returns the name of the class.
• Class.super: returns the super class of the class, null if it does not exist.
• Class.fields(): returns an array of fields (in the form of character strings) of the class:
• class A { a b } A.fields() === ['a', 'b'].
• Class.staticFields(): returns an array of static fields (in the form of character strings) of the class:
• class A { static c static d } A.staticFields() === ['c', 'd'].
• Class.methods(): returns an array of methods (in the form of character strings) of the class:
• class A { m() {} n() {} } A.methods() === ['m', 'n'].
• Class.staticMethods(): returns an array of static methods (in the form of character strings) of the class:
• class A { static o() {} static p() {} } A.staticFields() === ['o', 'p'].

Base Classes

The base classes are introduced in the language:

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

We can therefore create values ​​with these classes:

And use instanceof: