public static Rune ToLowerInvariant(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.ConvertAllAsciiCharsInUInt32ToLowercase(value._value)));
}
// Non-ASCII data requires going through the case folding tables.
return(ToLower(value, CultureInfo.InvariantCulture));
}
public static Rune ToLowerInvariant(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.ConvertAllAsciiCharsInUInt32ToLowercase(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: false));
}
