NSJsonSerialization JSONパース時の、型調査

NSSerialization JSONObjectWithDataでJSONをパースした時に、JSONの型がObjective-cのどの型に対応するか調査してみた。
iOS7でやってます。

こんなJSONを用意して・・・

{
   "IntAsString":"100",
   "IntAsNumber":100,
   "DoubleAsString":"0.03043054930804984029",
   "DoubleAsNumber":0.03043054930804984029,
   "BoolAsString":"false",
   "BoolAsBool":false,
   "NullAsString":"null",
   "NullAsNull":null,
   "String":"String",
   "Array":[
      0,
      0,
      0,
      0
   ],
   "Object":{
      "Hoge":"Fuga",
      "Foo":0
   }
}

こんなコードで型を列挙

 NSString *tJsonTest = @"{\"IntAsString\":\"100\", \"IntAsNumber\":100, \"DoubleAsString\":\"0.03043054930804984029\", \"DoubleAsNumber\":0.03043054930804984029, \"BoolAsString\":\"false\", \"BoolAsBool\": false, \"NullAsString\":\"null\", \"NullAsNull\":null, \"String\": \"String\", \"Array\": [0,0,0,0], \"Object\": {\"Hoge\":\"Fuga\", \"Foo\":0}}";
NSDictionary *tDict = [NSJSONSerialization JSONObjectWithData:[tJsonTest dataUsingEncoding:NSUTF8StringEncoding] options:0 error:nil];

for(NSString *tKey in tDict.allKeys) {
    NSLog(tKey);
    NSLog(NSStringFromClass([tDict[tKey] class]));
}

するとこんなログが。

2013-10-23 19:13:58.489 TestApp[33436:a0b] NullAsString
2013-10-23 19:13:58.491 TestApp[33436:a0b] __NSCFString
2013-10-23 19:13:58.491 TestApp[33436:a0b] String
2013-10-23 19:13:58.492 TestApp[33436:a0b] __NSCFString
2013-10-23 19:13:58.492 TestApp[33436:a0b] Array
2013-10-23 19:13:58.492 TestApp[33436:a0b] __NSCFArray
2013-10-23 19:13:58.493 TestApp[33436:a0b] IntAsNumber
2013-10-23 19:13:58.494 TestApp[33436:a0b] __NSCFNumber
2013-10-23 19:13:58.494 TestApp[33436:a0b] IntAsString
2013-10-23 19:13:58.495 TestApp[33436:a0b] __NSCFString
2013-10-23 19:13:58.495 TestApp[33436:a0b] BoolAsString
2013-10-23 19:13:58.496 TestApp[33436:a0b] __NSCFString
2013-10-23 19:13:58.496 TestApp[33436:a0b] NullAsNull
2013-10-23 19:13:58.496 TestApp[33436:a0b] NSNull
2013-10-23 19:13:58.497 TestApp[33436:a0b] Object
2013-10-23 19:13:58.497 TestApp[33436:a0b] __NSCFDictionary
2013-10-23 19:13:58.498 TestApp[33436:a0b] DoubleAsString
2013-10-23 19:13:58.498 TestApp[33436:a0b] __NSCFString
2013-10-23 19:13:58.499 TestApp[33436:a0b] DoubleAsNumber
2013-10-23 19:13:58.499 TestApp[33436:a0b] __NSCFNumber
2013-10-23 19:13:58.499 TestApp[33436:a0b] BoolAsBool
2013-10-23 19:13:58.500 TestApp[33436:a0b] __NSCFBoolean