public override VirtualChar this[int index]
{
get
{
#if DEBUG
// We should never have a property paired high/low surrogate in a StringChunk. We are only created
// when the string has the same number of chars as there are VirtualChars.
if (char.IsHighSurrogate(_underlyingData[index]))
{
Debug.Assert(
index + 1 >= _underlyingData.Length ||
!char.IsLowSurrogate(_underlyingData[index + 1])
);
}
#endif
var span = new TextSpan(_firstVirtualCharPosition + index, length: 1);
var ch = _underlyingData[index];
return(char.IsSurrogate(ch)
? VirtualChar.Create(ch, span)
: VirtualChar.Create(new Rune(ch), span));
}
}
public bool Contains(VirtualChar @char) => IndexOf(@char) >= 0;
public abstract bool TryGetEscapeCharacter(VirtualChar ch, out char escapedChar);