private static NespNumericExpression ParseNumeric(
string text, NespSourceInformation token)
{
if (byte.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var byteValue))
{
return(new NespNumericExpression(byteValue, token));
}
if (short.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var shortValue))
{
return(new NespNumericExpression(shortValue, token));
}
if (int.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var intValue))
{
return(new NespNumericExpression(intValue, token));
}
if (long.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var longValue))
{
return(new NespNumericExpression(longValue, token));
}
if (double.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var doubleValue))
{
return(new NespNumericExpression(doubleValue, token));
}
if (decimal.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out var decimalValue))
{
return(new NespNumericExpression(decimalValue, token));
}
return(null);
}
private static NespNumericExpression ParseHexadecimalNumeric(
string text, NespSourceInformation token)
{
if (text.StartsWith("0x") == false)
{
return(null);
}
var numericText = text.Substring(2);
if (numericText.EndsWith("ul"))
{
numericText = numericText.Substring(0, numericText.Length - 2);
if (ulong.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var ulongValue))
{
return(new NespNumericExpression(ulongValue, token));
}
}
else if (numericText.EndsWith("l"))
{
numericText = numericText.Substring(0, numericText.Length - 1);
if (long.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var longValue))
{
return(new NespNumericExpression(longValue, token));
}
}
else if (numericText.EndsWith("u"))
{
numericText = numericText.Substring(0, numericText.Length - 1);
if (uint.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var uintValue))
{
return(new NespNumericExpression(uintValue, token));
}
}
else
{
if (byte.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var byteValue))
{
return(new NespNumericExpression(byteValue, token));
}
if (short.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var shortValue))
{
return(new NespNumericExpression(shortValue, token));
}
if (int.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var intValue))
{
return(new NespNumericExpression(intValue, token));
}
if (long.TryParse(numericText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var longValue))
{
return(new NespNumericExpression(longValue, token));
}
}
return(null);
}
private static NespNumericExpression ParseStrictNumeric(
string text, NespSourceInformation token)
{
if (text.EndsWith("ul"))
{
var numericText = text.Substring(0, text.Length - 2);
if (ulong.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var ulongValue))
{
return(new NespNumericExpression(ulongValue, token));
}
}
else if (text.EndsWith("l"))
{
var numericText = text.Substring(0, text.Length - 1);
if (long.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var longValue))
{
return(new NespNumericExpression(longValue, token));
}
}
else if (text.EndsWith("u"))
{
var numericText = text.Substring(0, text.Length - 1);
if (uint.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var uintValue))
{
return(new NespNumericExpression(uintValue, token));
}
}
else if (text.EndsWith("f"))
{
var numericText = text.Substring(0, text.Length - 1);
if (float.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var floatValue))
{
return(new NespNumericExpression(floatValue, token));
}
}
else if (text.EndsWith("d"))
{
var numericText = text.Substring(0, text.Length - 1);
if (double.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var doubleValue))
{
return(new NespNumericExpression(doubleValue, token));
}
}
else if (text.EndsWith("m"))
{
var numericText = text.Substring(0, text.Length - 1);
if (decimal.TryParse(numericText, NumberStyles.Any, CultureInfo.InvariantCulture, out var decimalValue))
{
return(new NespNumericExpression(decimalValue, token));
}
}
return(null);
}
internal NespResolvedExpression(NespSourceInformation source)
: base(source)
{
}
