private static object DeserializeArray(JsonReaderBase reader)
{
if (reader.ReadChar() != '[')
{
throw new FormatException();
}
var collection = new List <object>();
var first = true;
while (true)
{
reader.SkipSpace();
if (reader.IsEnd)
{
throw new FormatException("配列の閉じ括弧が見つかりません。");
}
if (reader.Peek() == ']')
{
reader.ReadChar();
break;
}
if (!first)
{
if (reader.Peek() != ',')
{
throw new FormatException("配列の区切り文字が見つかりません。");
}
reader.ReadChar();
}
reader.SkipSpace();
collection.Add(Deserialize(reader));
first = false;
}
return(collection.ToArray());
}
private static object DeserializeObject(JsonReaderBase reader)
{
if (reader.ReadChar() != '{')
{
throw new FormatException();
}
var dic = new Dictionary <string, object>();
var first = true;
while (true)
{
reader.SkipSpace();
if (reader.IsEnd)
{
throw new FormatException("オブジェクトの閉じ括弧が見つかりません。");
}
if (reader.Peek() == '}')
{
reader.ReadChar();
break;
}
if (!first)
{
if (reader.Peek() != ',')
{
throw new FormatException("オブジェクトの区切り文字','が見つかりません。");
}
reader.ReadChar();
}
reader.SkipSpace();
var key = DeserializeString(reader);
reader.SkipSpace();
if (reader.Peek() != ':')
{
throw new FormatException("オブジェクトの区切り文字':'が見つかりません。");
}
reader.ReadChar();
reader.SkipSpace();
var value = Deserialize(reader);
dic[key] = value;
first = false;
}
return(dic);
}
private static object Deserialize(JsonReaderBase reader)
{
reader.SkipSpace();
switch (reader.Peek())
{
case '[':
return(DeserializeArray(reader));
case '{':
return(DeserializeObject(reader));
case '"':
return(DeserializeString(reader));
case 't': // true
if (reader.ReadStr(4) != "true")
{
throw new FormatException();
}
return(true);
case 'f': // false
if (reader.ReadStr(5) != "false")
{
throw new FormatException();
}
return(false);
case 'n': // null
if (reader.ReadStr(4) != "null")
{
throw new FormatException();
}
return(null);
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return(DeserializeNumber(1, reader));
case '-':
reader.ReadChar();
return(DeserializeNumber(-1, reader));
default:
throw new FormatException();
}
}