public static Rune FromString(string value, ref int index)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if (index >= value.Length)
{
throw new ArgumentOutOfRangeException("index", "Index is out of range of string.");
}
char c = value[index++];
if (Utf16.IsLeadingSurrogate(c))
{
if (index >= value.Length)
{
throw new ArgumentOutOfRangeException("index", "Index is out of range of string.");
}
char d = value[index++];
return(Rune.FromUtf16(c, d));
}
else
{
return(Rune.FromUtf16(c));
}
}
public static Rune FromUtf16(ushort[] array, ref int index)
{
if (index >= array.Length)
{
throw new ArgumentOutOfRangeException("index", "Index out of bounds.");
}
var value = array[index++];
if (Utf16.IsLeadingSurrogate(value))
{
if (index >= array.Length)
{
throw new ArgumentOutOfRangeException("index", "Need two items to process surrogate pair.");
}
var trailing = array[index++];
return(FromUtf16(value, trailing));
}
else
{
return(new Rune(value));
}
}