/// <summary>
/// Parse a part (real or complex) from a complex number.
/// </summary>
/// <param name="token">Start Token.</param>
/// <param name="imaginary">Is set to <c>true</c> if the part identified itself as being imaginary.</param>
/// <param name="format">
/// An <see cref="IFormatProvider"/> that supplies culture-specific
/// formatting information.
/// </param>
/// <returns>Resulting part as double.</returns>
/// <exception cref="FormatException"/>
static double ParsePart(ref LinkedListNode <string> token, out bool imaginary, IFormatProvider format)
{
imaginary = false;
if (token == null)
{
throw new FormatException();
}
// handle prefix modifiers
if (token.Value == "+")
{
token = token.Next;
if (token == null)
{
throw new FormatException();
}
}
var negative = false;
if (token.Value == "-")
{
negative = true;
token = token.Next;
if (token == null)
{
throw new FormatException();
}
}
// handle prefix imaginary symbol
if (String.Compare(token.Value, "i", StringComparison.OrdinalIgnoreCase) == 0 ||
String.Compare(token.Value, "j", StringComparison.OrdinalIgnoreCase) == 0)
{
imaginary = true;
token = token.Next;
if (token == null)
{
return(negative ? -1 : 1);
}
}
var value = GlobalizationHelper.ParseDouble(ref token, format.GetCultureInfo());
// handle suffix imaginary symbol
if (token != null && (String.Compare(token.Value, "i", StringComparison.OrdinalIgnoreCase) == 0 ||
String.Compare(token.Value, "j", StringComparison.OrdinalIgnoreCase) == 0))
{
if (imaginary)
{
// only one time allowed: either prefix or suffix, or neither.
throw new FormatException();
}
imaginary = true;
token = token.Next;
}
return(negative ? -value : value);
}
/// <summary>
/// Parse a part (real or complex) from a complex number.
/// </summary>
/// <param name="token">Start Token.</param>
/// <param name="imaginary">Is set to <c>true</c> if the part identified itself as being imaginary.</param>
/// <param name="format">
/// An <see cref="IFormatProvider"/> that supplies culture-specific
/// formatting information.
/// </param>
/// <returns>Resulting part as double.</returns>
/// <exception cref="FormatException"/>
private static double ParsePart(ref LinkedListNode<string> token, out bool imaginary, IFormatProvider format)
{
imaginary = false;
if (token == null)
{
throw new FormatException();
}
// handle prefix modifiers
if (token.Value == "+")
{
token = token.Next;
if (token == null)
{
throw new FormatException();
}
}
var negative = false;
if (token.Value == "-")
{
negative = true;
token = token.Next;
if (token == null)
{
throw new FormatException();
}
}
// handle prefix imaginary symbol
if (String.Compare(token.Value, "i", StringComparison.OrdinalIgnoreCase) == 0
|| String.Compare(token.Value, "j", StringComparison.OrdinalIgnoreCase) == 0)
{
imaginary = true;
token = token.Next;
if (token == null)
{
return negative ? -1 : 1;
}
}
#if PORTABLE
var value = GlobalizationHelper.ParseDouble(ref token);
#else
var value = GlobalizationHelper.ParseDouble(ref token, format.GetCultureInfo());
#endif
// handle suffix imaginary symbol
if (token != null && (String.Compare(token.Value, "i", StringComparison.OrdinalIgnoreCase) == 0
|| String.Compare(token.Value, "j", StringComparison.OrdinalIgnoreCase) == 0))
{
if (imaginary)
{
// only one time allowed: either prefix or suffix, or neither.
throw new FormatException();
}
imaginary = true;
token = token.Next;
}
return negative ? -value : value;
}
