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();
}
}
private static string DeserializeString(JsonReaderBase reader)
{
if (reader.ReadChar() != '"')
{
throw new FormatException();
}
var sb = new StringBuilder();
while (!reader.IsEnd)
{
char c = reader.ReadChar();
if (c == '"')
{
break;
}
if (c == '\\')
{
char c2 = reader.ReadChar();
switch (c2)
{
case 'b':
sb.Append('\b');
break;
case 'f':
sb.Append('\f');
break;
case 'n':
sb.Append('\n');
break;
case 'r':
sb.Append('\r');
break;
case 't':
sb.Append('\t');
break;
case 'u':
{
var s = reader.ReadStr(4);
var ch = char.ConvertFromUtf32(Int32.Parse(s, NumberStyles.AllowHexSpecifier, CultureInfo.InvariantCulture));
sb.Append(ch);
}
break;
case '"':
case '\\':
case '/':
sb.Append(c2);
break;
default:
throw new FormatException("不正なエスケープシーケンスが見つかりました。");
}
}
else
{
sb.Append(c);
}
}
return(sb.ToString());
}