protected double RequireDouble()
{
sb.Clear();
var ch = SkipSpaces();
bool neg = ch == '-';
if (neg)
{
sb.Append(ch);
ch = Reader.ReadChar();
}
if (ch == 'N')
{
Require("aN");
return(double.NaN);
}
if (ch == 'I')
{
Require("nfinity");
return(neg ? double.NegativeInfinity : double.PositiveInfinity);
}
ch = JsonNumberReader.ReadUnsignedFloat(Reader, sb, ch);
PutBack(ch);
return(double.Parse(sb.ToString(), CultureInfo.InvariantCulture));
}
protected decimal RequireDecimal()
{
sb.Clear();
var ch = SkipSpaces();
bool neg = ch == '-';
if (neg)
{
sb.Append(ch);
ch = Reader.ReadChar();
}
ch = JsonNumberReader.ReadUnsignedFloat(Reader, sb, ch);
PutBack(ch);
return(decimal.Parse(sb.ToString(), CultureInfo.InvariantCulture));
}
protected object RequireNumber()
{
sb.Clear();
var ch = SkipSpaces();
bool neg = ch == '-';
if (neg)
{
sb.Append(ch);
ch = Reader.ReadChar();
}
if (ch == 'N')
{
Require("aN");
return(double.NaN);
}
if (ch == 'I')
{
Require("nfinity");
return(neg ? double.NegativeInfinity : double.PositiveInfinity);
}
ch = JsonNumberReader.ReadDigits(Reader, sb, ch);
var isFloat = ch == '.';
if (isFloat)
{
sb.Append(ch);
ch = JsonNumberReader.ReadDigits(Reader, sb, Reader.ReadChar());
}
if (ch == 'e' || ch == 'E')
{
isFloat = true;
sb.Append(ch);
ch = Reader.ReadChar();
if (ch == '+' || ch == '-')
{
sb.Append(ch);
ch = Reader.ReadChar();
}
ch = JsonNumberReader.ReadDigits(Reader, sb, ch);
}
PutBack(ch);
if (isFloat)
{
return(double.Parse(sb.ToString(), CultureInfo.InvariantCulture));
}
if (neg)
{
var result = long.Parse(sb.ToString());
return
(result >= sbyte.MinValue ? (sbyte)result :
result >= short.MinValue ? (short)result :
result >= int.MinValue ? (int)result :
(object)result);
}
else
{
var result = ulong.Parse(sb.ToString());
return
(result <= byte.MaxValue ? (byte)result :
result <= ushort.MaxValue ? (ushort)result :
result <= uint.MaxValue ? (uint)result :
(object)result);
}
}