public static uint ToUtf32(ushort leadingSurrogate, ushort trailingSurrogate)
{
if (!Utf16.IsLeadingSurrogate(leadingSurrogate))
{
throw InvalidLeadingSurrogate(leadingSurrogate);
}
if (!Utf16.IsTrailingSurrogate(trailingSurrogate))
{
throw InvalidTrailingSurrogate(trailingSurrogate);
}
return(CombineSurrogates(leadingSurrogate, trailingSurrogate));
}
public static bool IsInvalid(uint value)
{
return(((value & 0xFFFE) == 0xFFFE) ||
(Utf16.IsSurrogate(value)) ||
(value >= NonCharacterStart && value <= NonCharacterEnd));
}