var overload=require("./overload")

, Watchable = overload.Watchable

, RePrototype = overload.RePrototype

exports.ReadOnly=ReadOnly=function(obj,mask,filter) {

var $this=Watchable(function(args){

var v=mask

&& args.property in mask

? mask[args.property]

: obj[args.property];

if(typeof(v)=="function") {

return function(){return v.apply(obj,arguments)}

}

return v;

},filter?function(ArgInfo){

var property = ArgInfo.property

if(filter(property)) {

obj[property] = ArgInfo.value

}

}:undefined);

//only objects have prototypes

if(obj instanceof Object) {

RePrototype($this,Object.getPrototypeOf(obj))

}

return $this;

}

var noop=function(){}

ReadOnly.ArrayMask={

pop:function(){return this[this.length-1];}

,push:function(){return this.length}

,reverse:noop

,shift:function(){return this[0];}

,sort:noop

,splice:function(){return [];}

,unshift:function(){return this.length}

}

ReadOnly.ArrayFilter = function(property) {

return typeof property !== "number"

}

ReadOnly.DateMask={

setDate:noop

,setFullYear:noop

,setHours:noop

,setMilliseconds:noop

,setMinutes:noop

,setMonth:noop

,setSeconds:noop

,setTime:noop

,setUTCDate:noop

,setUTCFullYear:noop

,setUTCHours:noop

,setUTCMilliseconds:noop

,setUTCMinutes:noop

,setUTCMonth:noop

,setUTCSeconds:noop

,setYear:noop

}

ReadOnly.StringMask={}

delete noop;