/// <summary>
/// Get hash code for sub string
/// </summary>
public static int GetHashCode(string s, int index, int length)
{
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
if (index < 0)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
if (((uint)index + (uint)length) > s.Length)
{
throw new ArgumentOutOfRangeException(nameof(length));
}
unsafe
{
fixed(char *p = s)
{
return(FastStringComparer.FastGetHash(p + index, length));
}
}
}
/// <summary>
/// Get Hash code for full string
/// </summary>
public static int GetHashCode(string s)
{
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
unsafe
{
fixed(char *p = s)
{
return(FastStringComparer.FastGetHash(p, s.Length));
}
}
}
/// <summary>
/// Get Hash code for full byte array, return true for all ASCII
/// </summary>
public static int GetHashCode(byte[] s, out bool isAscii)
{
if (s == null)
{
throw new ArgumentNullException(nameof(s));
}
unsafe
{
fixed(byte *p = s)
{
return(FastStringComparer.FastGetHash(p, s.Length, out isAscii));
}
}
}
public static bool Equals(string x, string y)
{
#if WIN64
if (object.ReferenceEquals(x, y))
{
return(true);
}
if ((x == null) || (y == null))
{
return(false);
}
if (x.Length != y.Length)
{
return(false);
}
return(FastStringComparer.EqualsHelp64(x, y));
#else
return(string.Equals(x, y));
#endif
}
int IEqualityComparer <string> .GetHashCode(string obj)
{
return(FastStringComparer.GetHashCode(obj));
}
bool IEqualityComparer <string> .Equals(string x, string y)
{
return(FastStringComparer.Equals(x, y));
}