nano/objects.nano at e5202c9c85226119e137c5990f625ea0b92daf84

 print("=== Objects Demo ===");
 print("");
 print("--- Object Instantiation ---");
 class Point {
     x = 0;
     y = 0;
     Point(this, x, y) {
         this.x = x;
         this.y = y;
     }
     toString(this) {
         return "(" + str(this.x) + ", " + str(this.y) + ")";
     }
     distanceFromOrigin(this) {
         return this.x * this.x + this.y * this.y;
     }
 }
 p1 = new Point(3, 4);
 p2 = new Point(10, 20);
 print("Point 1:", p1.toString());
 print("Point 2:", p2.toString());
 print("");
 print("--- Property Access ---");
 print("p1.x =", p1.x);
 print("p1.y =", p1.y);
 print("p2.x =", p2.x);
 print("p2.y =", p2.y);
 print("");
 print("--- Property Modification ---");
 p1.x = 100;
 p1.y = 200;
 print("After modification, p1:", p1.toString());
 print("");
 print("--- Method Calls ---");
 print("p2.distanceFromOrigin():", p2.distanceFromOrigin());
 print("");
 print("--- Multiple Objects ---");
 class Rectangle {
     width = 0;
     height = 0;
     Rectangle(this, w, h) {
         this.width = w;
         this.height = h;
     }
     area(this) {
         return this.width * this.height;
     }
     perimeter(this) {
         return 2 * (this.width + this.height);
     }
 }
 rect1 = new Rectangle(5, 10);
 rect2 = new Rectangle(3, 7);
 rect3 = new Rectangle(8, 8);
 print("Rectangle 1: " + str(rect1.width) + "x" + str(rect1.height));
 print("  Area:", rect1.area());
 print("  Perimeter:", rect1.perimeter());
 print("Rectangle 2: " + str(rect2.width) + "x" + str(rect2.height));
 print("  Area:", rect2.area());
 print("  Perimeter:", rect2.perimeter());
 print("Rectangle 3: " + str(rect3.width) + "x" + str(rect3.height));
 print("  Area:", rect3.area());
 print("  Perimeter:", rect3.perimeter());
 print("");
 print("--- Object Composition ---");
 class Circle {
     center = null;
     radius = 0;
     Circle(this, centerX, centerY, radius) {
         this.center = new Point(centerX, centerY);
         this.radius = radius;
     }
     describe(this) {
         print("Circle at", this.center.toString(), "with radius", this.radius);
     }
 }
 circle = new Circle(5, 5, 10);
 circle.describe();
 print("Center x:", circle.center.x);
 print("Center y:", circle.center.y);
 print("");
 print("--- Object Arrays ---");
 class Student {
     name = "";
     grade = 0;
     Student(this, name, grade) {
         this.name = name;
         this.grade = grade;
     }
 }
 students = {};
 students.push(new Student("Alice", 95));
 students.push(new Student("Bob", 87));
 students.push(new Student("Charlie", 92));
 students.push(new Student("Diana", 88));
 print("Student Grades:");
 totalGrade = 0;
 for (i = 0; i < len(students); i++) {
     print("  " + students[i].name + ":", students[i].grade);
     totalGrade += students[i].grade;
 }
 average = totalGrade / len(students);
 print("Average grade:", average);
 print("");
 print("--- Object State ---");
 class BankAccount {
     owner = "";
     balance = 0;
     transactions = null;
     BankAccount(this, owner, initial) {
         this.owner = owner;
         this.balance = initial;
         this.transactions = {};
         this.transactions.push("Initial deposit: " + str(initial));
     }
     deposit(this, amount) {
         this.balance += amount;
         this.transactions.push("Deposit: " + str(amount));
     }
     withdraw(this, amount) {
         if (amount > this.balance) {
             print("Insufficient funds!");
             return 0;
         }
         this.balance -= amount;
         this.transactions.push("Withdrawal: " + str(amount));
         return 1;
     }
     getStatement(this) {
         print("=== Account Statement ===");
         print("Owner:", this.owner);
         print("Transactions:");
         for (i = 0; i < len(this.transactions); i++) {
             print("  ", this.transactions[i]);
         }
         print("Current Balance:", this.balance);
     }
 }
 account = new BankAccount("John Doe", 1000);
 account.deposit(500);
 account.deposit(250);
 account.withdraw(300);
 account.withdraw(100);
 account.getStatement();
 print("");
 print("--- Object Equality ---");
 class Token {
     type = "";
     value = "";
     Token(this, type, value) {
         this.type = type;
         this.value = value;
     }
     equals(this, other) {
         return this.type == other.type && this.value == other.value;
     }
 }
 t1 = new Token("NUMBER", "42");
 t2 = new Token("NUMBER", "42");
 t3 = new Token("STRING", "hello");
 print("t1 equals t2:", t1.equals(t2));
 print("t1 equals t3:", t1.equals(t3));
 print("");
 print("--- Factory Pattern ---");
 class ShapeFactory {
     ShapeFactory(this) {
     }
     createRectangle(this, w, h) {
         return new Rectangle(w, h);
     }
     createSquare(this, size) {
         return new Rectangle(size, size);
     }
 }
 factory = new ShapeFactory();
 rect = factory.createRectangle(4, 6);
 square = factory.createSquare(5);
 print("Rectangle area:", rect.area());
 print("Square area:", square.area());