🏗️ Klasy

Klasy pozwalają na programowanie obiektowe w KitsuneScript.

Podstawowa klasa

class Person {
    init(name, age) {
        this.name = name;
        this.age = age;
    }

    greet() {
        return `Cześć, jestem ${this.name}!`;
    }

    birthday() {
        this.age = this.age + 1;
    }
}

let person = Person("Jan", 25);
print(person.greet());  // "Cześć, jestem Jan!"
person.birthday();
print(person.age);       // 26
        

Konstruktor (init)

class Rectangle {
    init(width, height) {
        this.width = width;
        this.height = height;
    }

    area() {
        return this.width * this.height;
    }
}

let rect = Rectangle(10, 5);
print(rect.area());  // 50
        

Visibility modifiers

class BankAccount {
    init(balance) {
        this.balance = balance;
    }

    // Publiczna (domyślnie)
    getBalance() {
        return this.balance;
    }

    // Prywatna
    private validateAmount(amount) {
        return amount > 0;
    }

    withdraw(amount) {
        if (this.validateAmount(amount)) {
            this.balance = this.balance - amount;
        }
    }
}

let account = BankAccount(1000);
account.getBalance();       // OK
// account.validateAmount(50);  // Error! Private
        

Companion object

class Counter {
    init() {
        this.value = Counter.defaultValue;
    }

    increment() {
        this.value++;
        Counter.totalIncrements++;
    }

    companion {
        let defaultValue = 0;
        let totalIncrements = 0;

        fn getTotalIncrements() {
            return Counter.totalIncrements;
        }
    }
}

let c1 = Counter();
let c2 = Counter();
c1.increment();
c2.increment();
print(Counter.getTotalIncrements());  // 2
        