Kazuho@Cybozu鐃緒申鐃殉￥申鐃緒申鐃縦もあ鐃所が鐃夙わ申鐃緒申鐃緒申鐃緒申鐃殉わ申鐃緒申

Kazuho@Cybozu Labs: JavaScript 鐃緒申 String 鐃緒申鐃緒申兢鐃緒申鐃緒申鐃�
鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申函鐃�String 鐃緒申鐃緒申兢鐃緒申辰櫃鐃緒申鐃緒申箸鐃緒申任鐃緒申泙鐃緒申鐃緒申鐃緒申鐃淑器申鐃緒申鐃緒申

鐃緒申鐃緒申鐃緒申鐃緒申鐃竣ワ申鐃夙ワ申鐃緒申鐃緒申的鐃術常申鐃緒申妊鐃塾器申鐃緒申鐃叔わ申鐃緒申鐃緒申泙鐃緒申鐃緒申鐃�

Atomic鐃緒申Object鐃緒申兢鐃�

鐃緒申鐃緒申蓮鐃緒申焚鐃緒申里茲�鐃緒申鐃緒申鐃重�鐃祝緒申鐃緒申泙鐃緒申鐃�

var Atomic = function(C){
    var P = function(v){ this._v = v; };
    P.prototype = new C;
    P.prototype.valueOf  = function(){ return this._v.valueOf(); }
    P.prototype.toString = function(){ return this._v.toString(); }
    return P;
}

鐃夙わ申鐃夙わ申鐃熟わ申鐃緒申福鐃�

var MyStr = Atomic(Str);
MyStr.prototype.x = function(n){
  var str = '';
  while (n--) str += this;
  return new MyStr(str);
};
var mystr = new MyStr("foobar");

鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃塾ままでわ申Atomic鐃淑常申鐃夙わ申鐃緒申鐃叔なわ申鐃緒申鐃緒申分鐃緒申鐃淑わ申鐃緒申个覆鐃殉わ申鐃緒申

object()鐃塾鰹申張

鐃緒申鐃緒申鐃叔￥申object()鐃緒申焚鐃緒申里茲�鐃祝鰹申張鐃緒申鐃殉わ申鐃緒申

var object = function(obj, base) {
    var P;
    switch ( typeof(obj) ) {
    case "boolean":
    case "number":
    case "string":
        P = Atomic((base || obj).constructor);
        break;
    // case "array": typedof([]) is "object".
    case "object":
        P = function(){};
        P.prototype = (base || obj);
        break;
    default:
        return;
    };
    P.prototype.method = function(o, f){
        if (typeof(o) == "string"){
            P.prototype[o] = f;
        }else{
            for (var p in o){
                P.prototype[p] = o[p];
            }
        }
    }
    return new P(obj);
}

鐃緒申鐃緒申如鐃緒申匹鐃緒申Object鐃緒申鐃出わ申鐃銃も、obj.method()鐃緒申箸辰謄瓮緒申奪匹鐃緒申媛辰任鐃緒申泙鐃緒申鐃�

var mystr = object("foobar");
mystr.method('x', function(n){
  var str = '';
  while (n--) str += this;
  return new MyStr(str);
});

鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃塾ままでわ申Singleton Method鐃緒申鐃宿加わ申鐃緒申鐃緒申鐃緒申覆鐃緒申鐃緒申箸砲覆鐃殉わ申鐃緒申鐃緒申呂鐃緒申隋硬�鐃祝使わ申鐃祝わ申

var MyStr = function(o){
  // constructor 鐃緒申鐃緒申鐃�
}
var mystr = new MyStr("foobar");
var double = mystr.x(2);

鐃塾よう鐃祝わ申鐃緒申鐃緒申鐃夙わ申鐃緒申鐃叔わ申鐃緒申

Fake Constructor鐃緒申鐃緒申鐃�

鐃緒申鐃緒申MyStr()鐃緒申鐃緒申鐃緒申鐃宿わ申鐃緒申鐃緒申个茲わ申任鐃緒申腓�鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申个茲わ申里任鐃緒申鐃�

var MyStr = function(o){
    var self = object(o);
    self.method({
        'x': function(n){
            var str = '';
            while (n--) str += this;
            return new MyStr(str);
        },
        /* 他鐃緒申method鐃盾こ鐃緒申鐃緒申鐃緒申鐃� */
    });
    return self;    
}

鐃緒申鐃緒申鐃緒申鐃緒申鐃旬わ申鐃緒申頂鐃緒申鐃緒申鐃緒申鐃塾は￥申MyStr()鐃緒申this鐃祝はノ￥申鐃緒申鐃獣ワ申鐃淑わ申鐃夙でわ申鐃緒申鐃緒申鐃緒申鐃緒申MyStr.prototype.x = function(){ /*... */ }鐃熟緒申鐃緒申泙鐃緒申鵝�わ申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申鐃緒申self.method()鐃緒申担鐃獣てわ申鐃殉わ申鐃緒申

鐃緒申鐃夙は￥申

var mystr = new MyStr("foobar"); // 鐃渋わ申new鐃熟わ申鐃獣てわ申覆鐃緒申討鐃処い鐃緒申
var double = mystr.x(2);

鐃夙わ申鐃緒申个鐃緒申鐃緒申錣縁申任鐃緒申鐃�

鐃叔ワ申

鐃殉とわ申鐃夙￥申鐃緒申鐃緒申粉鐃緒申鐃緒申砲覆鐃殉わ申鐃緒申

Boolean

Number

String

Array

Object

鐃淑わ申足鐃祝わ申鐃緒申鐃獣てなわ申鐃淑わ申抜鐃緒申鐃淑わ申鐃獣わ申鐃宿わ申抜鐃緒申鐃緒申鐃緒申分鐃叔わ申鐃緒申

Enjoy!

Dan the Prototyper