public static SwiftTupleMap FromTypes(Type [] types)
{
lock (cachelock) {
SwiftTupleMap map;
if (cache.TryGetValue(types, out map))
{
return(map);
}
map = new SwiftTupleMap();
map.Types = types;
var metatypes = new SwiftMetatype [types.Length];
for (int i = 0; i < types.Length; i++)
{
metatypes [i] = StructMarshal.Marshaler.Metatypeof(types [i]);
}
var mt = SwiftCore.TupleMetatype(metatypes);
map.Offsets = mt.GetTupleElementOffsets();
map.Size = (int)SwiftCore.SizeOf(mt);
map.Stride = (int)SwiftCore.StrideOf(mt);
cache.Add(types, map);
return(map);
}
}
public static string MemoryStatus(IntPtr handle)
{
if (handle == IntPtr.Zero)
{
return("(zero handle)");
}
return($"s: {SwiftCore.RetainCount (handle)} u: {SwiftCore.UnownedRetainCount (handle)} w: {SwiftCore.WeakRetainCount (handle)} IsDealloc: {SwiftCore.IsDeallocating (handle)}");
}
public static SwiftClassObject FromSwiftObject(ISwiftObject obj)
{
SwiftClassPriv classPriv = GetSwiftClassPriv(obj);
if (!classPriv.IsSwiftTypeMetadata)
{
throw new NotSupportedException("class object is an Objective C class.");
}
return(new SwiftClassObject(classPriv, SwiftCore.GetClassPtr(obj)));
}
static SwiftClassPriv GetSwiftClassPriv(ISwiftObject obj)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
var classPtr = SwiftCore.GetClassPtr(obj);
if (classPtr == IntPtr.Zero)
{
throw new ArgumentOutOfRangeException(nameof(obj));
}
return((SwiftClassPriv)Marshal.PtrToStructure(classPtr, typeof(SwiftClassPriv)));
}
