void ISwiftFieldExposable.InitNativeData(void *handle)
{
if (NativeDataInitialized)
{
throw new InvalidOperationException();
}
data = new TaggedPointer(handle, owned: false);
InitNativeData(handle);
}
public void Dispose()
{
if (tp.IsOwned)
{
swiftType.Destroy(tp.Pointer);
}
if (handle.IsAllocated)
{
handle.Free();
}
tp = default;
}
// NOTE: If we ever change this implementation such that the returned SwiftHandle
// needs to be disposed, we must update NSHostingView and UIHostingView constructors.
public SwiftHandle GetSwiftHandle()
{
if (data == null)
{
data = TaggedPointer.AllocHGlobal(SwiftType.NativeDataSize);
try {
InitNativeData(data.Pointer);
} catch {
data = default;
throw;
}
}
return(new SwiftHandle(data.Pointer, SwiftType));
}
public SwiftHandle(object toPin, SwiftType swiftType, bool destroyOnDispose = false)
{
this.swiftType = swiftType ?? throw new ArgumentNullException(nameof(swiftType));
this.handle = GCHandle.Alloc(toPin, GCHandleType.Pinned);
this.tp = new TaggedPointer(handle.AddrOfPinnedObject(), destroyOnDispose);
}
public SwiftHandle(void *pointer, SwiftType swiftType, GCHandle handle = default)
{
this.swiftType = swiftType ?? throw new ArgumentNullException(nameof(swiftType));
this.tp = new TaggedPointer(pointer, false);
this.handle = handle;
}
