Classes and objects

Nougaro is an object-oriented programming language, which means you can create objects using classes.

Class definition

To define a class, use this syntax:

class Name
    ...
end

To create attributes, just use the basic var id = value syntax:

class Name
    var a = 3
    var b = 1
end

To create methods, just use the basic def syntax. Access to object’s attributes with this:

class Name
    var a = 3
    var b = 1

    def increment_b(by)
        var this.b += 1
    end

    def get_a()
        return this.a
    end
end

Methods are attributes themselves.

Methods

Internal type: method.

No operation can be used on methods.

Methods are true in boolean context.

Constructor value

Internal type: constructor.

No operation can be used on constructors.

Constructors are false in boolean context.

Inheritance

To inherit from another class, use the class Name(Iherit) syntax:

class ChildOfName(Name)
    var c = 3

    def set_c(new_value)
        var this.c = new_value
    end

    def a_plus_b_plus_c()
        return this.get_a() + this.b + this.c
    end
end

Object

Classes can be instanced into objects by calling them.

Example:

var instance = Name()

instance.increment_b(10)
assert instance.b == 11

Internal type: Name (depends on the class’ name).

No operation can be used on objects.

Objects are false in boolean context.

Example

See the stack.noug example located in ./examples/ in the main Nougaro repository.