/// <summary>
/// Create a new <see cref="NumberConvertOptions"/> based on the provided flags
/// </summary>
public NumberConvertOptions(ParseNumericStringFlags parseFlags)
{
this.ParseFlags = parseFlags;
this.ParseHex = ParseFlags.HasFlag(ParseNumericStringFlags.HexString);
this.ParseOctal = ParseFlags.HasFlag(ParseNumericStringFlags.OctalString);
this.ParseBinary = ParseFlags.HasFlag(ParseNumericStringFlags.BinaryString);
this.AllowDigitSeparator = ParseFlags.HasFlag(ParseNumericStringFlags.AllowDigitSeparator);
}
/// <summary>
/// Test if the input value is a non-null numeric type
/// or a string that can be parsed as a number, with detection
/// of hex strings controlled by <paramref name="parseFlags"/>
/// </summary>
/// <param name="value"></param>
/// <param name="parseFlags"></param>
public static bool IsNumeric(object value, ParseNumericStringFlags parseFlags)
{
if (null == value)
{
return(false);
}
if (value is string sValue)
{
if (double.TryParse(sValue, out _))
{
return(true);
}
bool allowDigitSep = (parseFlags & ParseNumericStringFlags.AllowDigitSeparator) != 0;
if (allowDigitSep)
{
bool changed = false;
while (sValue.IndexOf('_') >= 0)
{
sValue = Regex.Replace(sValue, "([0-9a-fA-F])_+([0-9a-fA-F])", "$1$2");
changed = true;
}
if (changed && double.TryParse(sValue, out _))
{
return(true);
}
}
if ((parseFlags & ParseNumericStringFlags.HexString) != 0)
{
if (Regex.IsMatch(sValue, @"^\s*0[xX][0-9a-fA-F]+$"))
{
return(true);
}
}
if ((parseFlags & ParseNumericStringFlags.OctalString) != 0)
{
if (Regex.IsMatch(sValue, @"^\s*0[oO][0-7]+$"))
{
return(true);
}
}
if ((parseFlags & ParseNumericStringFlags.BinaryString) != 0)
{
if (Regex.IsMatch(sValue, @"^\s*0[bB][01]+$"))
{
return(true);
}
}
return(false);
}
return(TypeInspection.IsNumberType(value.GetType()));
}
/// <summary> /// Set or update the <see cref="NumberConvertOptions"/> with the provided parameters /// </summary> /// <param name="parseFlags">Flags controlling how to parse numeric strings</param> /// <returns>A new <see cref="ConvertOptionsBuilder"/> with updated settings</returns> /// <see cref="NumberConvertOptions"/> /// <see cref="ParseNumericStringFlags"/> public ConvertOptionsBuilder WithNumberOptions(ParseNumericStringFlags parseFlags) => new ConvertOptionsBuilder(this, new NumberConvertOptions(parseFlags));
public ConvertOptionsBuilder WithNumberOptions(ParseNumericStringFlags parseFlags) => throw null;
public NumberConvertOptions(ParseNumericStringFlags parseFlags) => throw null;
public static bool IsNumeric(object value, ParseNumericStringFlags parseFlags) => throw null;