public static Rune ToUpperInvariant(Rune value)
{
// Handle the most common case (ASCII data) first. Within the common case, we expect
// that there'll be a mix of lowercase & uppercase chars, so make the conversion branchless.
if (value.IsAscii || GlobalizationMode.Invariant)
{
// It's ok for us to use the UTF-16 conversion utility for this since the high
// 16 bits of the value will never be set so will be left unchanged.
return(UnsafeCreate(Utf16Utility.ConvertAllAsciiCharsInUInt32ToUppercase(value._value)));
}
// Non-ASCII data requires going through the case folding tables.
return(ToUpper(value, CultureInfo.InvariantCulture));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)] // called directly by GetCharCountCommon
private protected sealed override unsafe int GetByteCountFast(char *pChars, int charsLength, EncoderFallback?fallback, out int charsConsumed)
{
// The number of UTF-8 code units may exceed the number of UTF-16 code units,
// so we'll need to check for overflow before casting to Int32.
char *ptrToFirstInvalidChar = Utf16Utility.GetPointerToFirstInvalidChar(pChars, charsLength, out long utf8CodeUnitCountAdjustment, out _);
int tempCharsConsumed = (int)(ptrToFirstInvalidChar - pChars);
charsConsumed = tempCharsConsumed;
long totalUtf8Bytes = tempCharsConsumed + utf8CodeUnitCountAdjustment;
if ((ulong)totalUtf8Bytes > int.MaxValue)
{
ThrowConversionOverflow();
}
return((int)totalUtf8Bytes);
}
public static Rune ToUpperInvariant(Rune value)
{
// Handle the most common case (ASCII data) first. Within the common case, we expect
// that there'll be a mix of lowercase & uppercase chars, so make the conversion branchless.
if (value.IsAscii)
{
// It's ok for us to use the UTF-16 conversion utility for this since the high
// 16 bits of the value will never be set so will be left unchanged.
return(UnsafeCreate(Utf16Utility.ConvertAllAsciiCharsInUInt32ToUppercase(value._value)));
}
if (GlobalizationMode.Invariant)
{
// If the value isn't ASCII and if the globalization tables aren't available,
// case changing has no effect.
return(value);
}
// Non-ASCII data requires going through the case folding tables.
return(ChangeCaseCultureAware(value, TextInfo.Invariant, toUpper: true));
}