public IEnumerable <StatementSyntax> GenerateCleanupStatements(TypePositionInfo info, StubCodeContext context) => _innerMarshaller.GenerateCleanupStatements(info, context);
public IEnumerable <StatementSyntax> Generate(TypePositionInfo info, StubCodeContext context)
{
// Although custom native type marshalling doesn't support [In] or [Out] by value marshalling,
// other marshallers that wrap this one might, so we handle the correct cases here.
switch (context.CurrentStage)
{
case StubCodeContext.Stage.Setup:
return(_nativeTypeMarshaller.GenerateSetupStatements(info, context));
case StubCodeContext.Stage.Marshal:
if (!info.IsManagedReturnPosition && info.RefKind != RefKind.Out)
{
return(_nativeTypeMarshaller.GenerateMarshalStatements(info, context));
}
break;
case StubCodeContext.Stage.Pin:
if (!info.IsByRef || info.RefKind == RefKind.In)
{
return(_nativeTypeMarshaller.GeneratePinStatements(info, context));
}
break;
case StubCodeContext.Stage.PinnedMarshal:
if (!info.IsManagedReturnPosition && info.RefKind != RefKind.Out)
{
return(_nativeTypeMarshaller.GeneratePinnedMarshalStatements(info, context));
}
break;
case StubCodeContext.Stage.NotifyForSuccessfulInvoke:
if (!info.IsManagedReturnPosition && info.RefKind != RefKind.Out)
{
return(_nativeTypeMarshaller.GenerateNotifyForSuccessfulInvokeStatements(info, context));
}
break;
case StubCodeContext.Stage.UnmarshalCapture:
if (info.IsManagedReturnPosition || (info.IsByRef && info.RefKind != RefKind.In))
{
return(_nativeTypeMarshaller.GenerateUnmarshalCaptureStatements(info, context));
}
break;
case StubCodeContext.Stage.Unmarshal:
if (info.IsManagedReturnPosition || (info.IsByRef && info.RefKind != RefKind.In) ||
(_enableByValueContentsMarshalling && !info.IsByRef && info.ByValueContentsMarshalKind.HasFlag(ByValueContentsMarshalKind.Out)))
{
return(_nativeTypeMarshaller.GenerateUnmarshalStatements(info, context));
}
break;
case StubCodeContext.Stage.GuaranteedUnmarshal:
if (info.IsManagedReturnPosition ||
(info.IsByRef && info.RefKind != RefKind.In) ||
(_enableByValueContentsMarshalling && !info.IsByRef && info.ByValueContentsMarshalKind.HasFlag(ByValueContentsMarshalKind.Out)))
{
return(_nativeTypeMarshaller.GenerateGuaranteedUnmarshalStatements(info, context));
}
break;
case StubCodeContext.Stage.Cleanup:
return(_nativeTypeMarshaller.GenerateCleanupStatements(info, context));
default:
break;
}
return(Array.Empty <StatementSyntax>());
}