private static bool SlowEqualCaseInsensitive(ReadOnlySequence <byte> x, ReadOnlySequence <byte> y)
{
if (x.Length != y.Length)
{
return(false);
}
while (!x.IsEmpty)
{
ReadOnlySpan <byte> a = x.FirstSpan, b = y.FirstSpan;
var take = Math.Min(a.Length, b.Length);
if (take == 0)
{
ThrowHelper.Invalid("math is hard");
}
if (!EqualCaseInsensitive(a.Slice(0, take), b.Slice(0, take)))
{
return(false);
}
x = x.Slice(take);
y = y.Slice(take);
}
return(true);
}