/*
================================================================================
    Name        :   JSON
    In          :   [none]      
    Out         :   [none]      
    Note        :   JSONユーティリティ群
--------------------------------------------------------------------------------
    Version     :   Ver1.0.0    |   2006/12/04  |   新規作成
                :   Ver1.1.0    |   2007/02/17  |   [JSON.EncodeComplete]を追加
--------------------------------------------------------------------------------
    License     :   MIT license
    URL         :   www.kanasansoft.com
================================================================================
*/

/*--------------------------------------------------------------------------------
    コンストラクタ
--------------------------------------------------------------------------------*/
function JSON(){
}

/*--------------------------------------------------------------------------------
    JSONエンコードを行なう
--------------------------------------------------------------------------------*/
JSON.Encode
=   function(obj){

    var rtn;

    if(obj==null){

        rtn = "null";

    }else{

        switch(obj.constructor){

            case Boolean:
                rtn = obj?"true":"false";
                break;

            case Number:
                rtn = isNaN(obj)||!isFinite(obj)?"null":obj.toString(10);
                break;

            case String:
                rtn = "\""+StringUtility.Encode.JavaScript(obj)+"\"";
                break;

            case Array:
                var buf = [];
                for(var i=0;i<obj.length;i++){
                    //再帰呼出
                    buf.push(arguments.callee(obj[i]));
                }
                rtn = "["+buf.join(",")+"]";
                break;

            case Object:
                var buf = [];
                for(var key in obj){
                    //Object汚染回避判定有
                    if(obj.hasOwnProperty(key)){
                        //再帰呼出
                        buf[buf.length] = arguments.callee(key)+":"+arguments.callee(obj[key]);
                    }
                }
                rtn = "{"+buf.join(",")+"}";
                break;

            default:
                rtn = "null";
                break;

        }

    }

    return rtn;
}

/*--------------------------------------------------------------------------------
    JSONエンコードを行なう
--------------------------------------------------------------------------------*/
JSON.EncodeComplete
=   function(obj){

    var rtn;

    if(obj==null){

        rtn = "null";

    }else{

        switch(obj.constructor){

            case Boolean:
                rtn = obj?"true":"false";
                break;

            case Number:
                rtn = isNaN(obj)||!isFinite(obj)?"null":obj.toString(10);
                break;

            case String:
                rtn = "\""+StringUtility.Encode.JavaScriptComplete(obj)+"\"";
                break;

            case Array:
                var buf = [];
                for(var i=0;i<obj.length;i++){
                    //再帰呼出
                    buf.push(arguments.callee(obj[i]));
                }
                rtn = "["+buf.join(",")+"]";
                break;

            case Object:
                var buf = [];
                for(var key in obj){
                    //Object汚染回避判定有
                    if(obj.hasOwnProperty(key)){
                        //再帰呼出
                        buf[buf.length] = arguments.callee(key)+":"+arguments.callee(obj[key]);
                    }
                }
                rtn = "{"+buf.join(",")+"}";
                break;

            default:
                rtn = "null";
                break;

        }

    }

    return rtn;
}

/*--------------------------------------------------------------------------------
    JSONデコードを行なう
--------------------------------------------------------------------------------*/
JSON.Decode
=   function(str){

    var rtn;

    eval("rtn="+str);

    return rtn;
}