experimentos varios

experimentos.js

/*
var list1 = list(1, 2, 3);
var list2 = list(4, 5, 6);
var list3 = list1('+')(list2);

list3('add')(7);
list3('debug')(); // "list (7) [1,2,3,4,5,6,7]"
*/

var x = function(proto) {
	var subject, proxy;

	if(!proto) {
		proto = {};
	}
	
	for(var p in x.__proto) if(x.__proto.hasOwnProperty(p)) {
		if(!proto.hasOwnProperty(p)) {
			proto[p] = x.__proto[p];
		}
	}
	
	subject = Object.create(proto);
	
	proxy = function() {
		return subject.__get.apply(subject, arguments);	
	}
	
	subject.proxy = proxy;	
	proxy.subject = subject;
	
	return proxy;
};

x.__proto = {
	__get: function(prop) {
		if(!this[prop]) {
			return this.__noSuchProperty(prop);
		}
		
		if(typeof this[prop] == 'function') {
			return this[prop].bind(this);
		}
		
		return this[prop];
	},
	__noSuchProperty: function(prop) {
		throw prop + ' not found';
	}
};

var list = function() {
	var instance;
	
	instance = x(list.__proto);
	instance.subject.__array = [].slice.call(arguments);
	
	return instance;
};
list.__proto = {
	'add': function(element) {
		this.proxy('toArray')().push(element);
		return this.proxy;
	},
	'copy': function() {
		return list.apply(null, this.proxy('toArray')().concat());
	},
	'sort': function(fn) {
		return this.proxy('copy')('sort')(fn);
	},
	'sort!': function(fn) {
		this.proxy('toArray')().sort(fn);
	},
	'size': function() {
		return this.proxy('toArray')().length;
	},
	'toArray': function() {
		return this.__array;
	},
	'+': function(another) {
		return list.apply(
			null,
			this.proxy('toArray')().concat(another('toArray')())
		);
	},
	'debug': function() {
		return 'list (' +  this.proxy('size')()  + ') [' + this.proxy('toArray')() + ']';
	}
}


var list1 = list(1, 2, 3);
var list2 = list(4, 5, 6);
var list3 = list1('+')(list2);

list3('add')(7);
list3('debug')(); // "list (7) [1,2,3,4,5,6,7]"