public int IndexOf(UnicodeScalar unicodeScalar)
{
Span <char> span = stackalloc char[unicodeScalar.Utf16CodeUnitCount];
unicodeScalar.CopyUtf16CodeUnitsTo(span);
return(RawString.AsSpan().IndexOf(span, StringComparison.Ordinal));
}
public bool StartsWith(UnicodeScalar unicodeScalar)
{
Span <char> span = stackalloc char[unicodeScalar.Utf16CodeUnitCount];
unicodeScalar.CopyUtf16CodeUnitsTo(span);
return(RawString.AsSpan().StartsWith(span, StringComparison.Ordinal));
}
public int LastIndexOf(UnicodeScalar unicodeScalar, int startIndex, int count)
{
Span <char> span = stackalloc char[unicodeScalar.Utf16CodeUnitCount];
unicodeScalar.CopyUtf16CodeUnitsTo(span);
return(RawString.AsSpan().Slice(startIndex, count).LastIndexOf(span));
}
public Utf16SharedString PadRight(int totalWidth, UnicodeScalar paddingScalar)
{
if (totalWidth <= Length)
{
return(this);
}
int paddingScalarWidth = paddingScalar.Utf16CodeUnitCount;
int insertScalarCount = (totalWidth - Length) / paddingScalarWidth;
int paddedLength = Length + insertScalarCount * paddingScalarWidth;
Span <char> paddingSpan = stackalloc char[paddingScalarWidth];
paddingScalar.CopyUtf16CodeUnitsTo(paddingSpan);
Span <char> span = paddedLength <= maxStackallocSize ? stackalloc char[paddedLength] : new char[paddedLength];
RawString.AsSpan().CopyTo(span);
for (int i = Length; i < paddedLength; i += paddingScalarWidth)
{
for (int j = 0; j < paddingScalarWidth; j++)
{
span[i + j] = paddingSpan[j];
}
}
return(new Utf16SharedString(new string(span.ToArray()), Spans));
}
public static ReadOnlySpan <char> TrimStart(this ReadOnlySpan <char> span, UnicodeScalar unicodeScalar)
{
Span <char> trimSpan = stackalloc char[unicodeScalar.Utf16CodeUnitCount];
unicodeScalar.CopyUtf16CodeUnitsTo(trimSpan);
int start = 0;
for (ref int i = ref start; i < span.Length;)