public static Int32 GetValueTypeHashKey32(object obj)
{
if (obj is IUnique)
{
return(((IUnique)obj).GetKeyBytes().BitAggregate64to32().ToInt32());
}
if (obj.GetType().IsPrimitive)
{
byte *ps = stackalloc byte[8];
Marshal.StructureToPtr(obj, (IntPtr)ps, false);
return(BitAggregate64to32(ps));
}
if (obj is DateTime)
{
return(((DateTime)obj).ToBinary().GetBytes().BitAggregate64to32().ToInt32());
}
if (obj is Enum)
{
return(Convert.ToInt32(obj));
}
if (obj.GetType().IsLayoutSequential)
{
byte *ps = stackalloc byte[8];
ExtractOperation.ValueStructureToPointer(obj, ps, 0);
return(BitAggregate64to32(ps));
}
return((int)HashHandle32.ComputeHashCode(obj.GetBytes()));
}
public static Int64 GetValueTypeHashKey64(object obj)
{
if (obj is IUnique)
{
return(((IUnique)obj).KeyBlock);
}
Type t = obj.GetType();
if (t.IsPrimitive)
{
byte *ps = stackalloc byte[8];
Marshal.StructureToPtr(obj, (IntPtr)ps, false);
return(*(long *)ps);
}
if (obj is DateTime)
{
return(((DateTime)obj).ToBinary());
}
if (obj is Enum)
{
return(Convert.ToInt32(obj));
}
if (t.IsLayoutSequential)
{
byte *ps = stackalloc byte[8];
ExtractOperation.ValueStructureToPointer(obj, ps, 0);
return(*(long *)ps);
}
return((long)HashHandle64.ComputeHashCode(obj.GetBytes()));
}
public static Byte[] GetValueTypeHashBytes64(object obj)
{
if (obj is IUnique)
{
return(((IUnique)obj).GetKeyBytes());
}
if (obj.GetType().IsPrimitive)
{
byte[] s = new byte[8];
fixed(byte *ps = s)
{
Marshal.StructureToPtr(obj, (IntPtr)ps, false);
return(s);
}
}
if (obj is DateTime)
{
return(((DateTime)obj).ToBinary().GetBytes());
}
if (obj is Enum)
{
return(Convert.ToInt32(obj).GetBytes());
}
if (obj.GetType().IsLayoutSequential)
{
byte[] s = new byte[8];
fixed(byte *ps = s)
{
ExtractOperation.ValueStructureToPointer(obj, ps, 0);
return(s);
}
}
return(((long)HashHandle64.ComputeHashCode(obj.GetBytes())).GetBytes());
}
