require('sys'); require('./klass');

//1. create klass:

Klass.create('A.B', { initialize: function (word) { this.word = word; },

say: function () { console.log(this.word); } });

var c = A.B.$new('hello world'); c.say();

//2. klass method:

Klass.create('A.B', { $say: function () { console.log('hello world'); } });

A.B.$say();

//3. private method:

Klass.create('A.B', { $say: function () { console.log('klass '+ _say()); },

say: function () { console.log('instance ' + _say()); },

_say: function () { return 'hello world'; } });

A.B.$say(); var c = A.B.$new(); c.say();

//4. extend klass:

Klass.create('A.B', { initialize: function (word) { this.word = word; } });

A.B.$extend({ say: function () { console.log(this.word); } });

var c = A.B.$new('hello world'); c.say();

//5. subKlass:

Klass.create('A', { initialize: function (word) { this.word = word; } });

A.$subKlass('B', { say: function () { console.log(this.word); } });

var c = B.$new('hello world'); c.say();

//6. self usage:

Klass.create('A', { initialize: function (word) { self.word = word; self.sayAgain = function () { self.say(); }; },

say: function () { console.log(self.word); } });

var a = A.$new('hello world'); a.sayAgain();

//7. _super:

Klass.create('A', { _say: function () { return 'world'; } });

A.$subKlass('B', { _say: function () { return 'hello ' + _super(); } });

B.$subKlass('C', { say: function () { console.log(_say()); },

_say: function () { return 'say ' + _super(); } });

var c = C.$new(); c.say(); // say hello world

//8. klass attribute:

Klass.create('A', { $LIMIT: 100 });

console.log(A.$LIMIT); // 100

//9. mixin:

Klass.create('A', { $LIMIT: 100 });

Klass.create('B', { say: function () { console.log(_say()); },

_say: function () { return 'hello'; } });

Klass.create('C', { Mixins: [A, B],

_say: function () { return 'world'; } });

console.log(C.$LIMIT); // 100 var c = C.$new(); c.say(); // world

//10. abstract klass:

Klass.create('C', { Abstract: true, });

try { var c = C.$new(); } catch (e) { console.log('abstract klass cannot be instantiated'); }

//11. singleton:

Klass.create('C', { Singleton: true,

count: function () { this._count = this._count || 1; console.log(this._count); this._count++; } });

var c = C.$singleton(); c.count(); // 1 var cc = C.$singleton(); cc.count(); // 2