private InteropType GetInteropTypeForReturnValue()

in SharpGen/Transform/InteropSignatureTransform.cs [196:234]
30 lines of code
9 McCabe index (conditional complexity)

        private InteropType GetInteropTypeForReturnValue(CsReturnValue returnValue,
                                                         PlatformDetectionType platform,
                                                         ref InteropMethodSignatureFlags flags)
        {
            var platformSpecificReturnTypeOverrides = (platform & PlatformDetectionType.Windows) != 0
                                                          ? windowsOnlyReturnTypeOverrides
                                                          : systemvOnlyReturnTypeOverrides;

            // Handle Return Type parameter
            // MarshalType.Type == null, then check that it is a structure
            if (returnValue.PublicType is CsStruct or CsEnum)
            {
                var returnQualifiedName = returnValue.PublicType.QualifiedName;

                if (returnTypeOverrides.TryGetValue(returnQualifiedName, out var interopType))
                {
                    flags |= interopType.SetFlags;
                    return interopType.NewType;
                }

                if (platformSpecificReturnTypeOverrides.TryGetValue(returnQualifiedName, out interopType))
                {
                    flags |= interopType.SetFlags;
                    return interopType.NewType;
                }

                return returnValue.HasNativeValueType
                           ? $"{returnValue.MarshalType.QualifiedName}.__Native"
                           : returnValue.MarshalType.QualifiedName;
            }

            if (returnValue.MarshalType is CsFundamentalType fundamentalReturn)
                return fundamentalReturn;

            if (returnValue.HasPointer)
                return returnValue.IsInterface ? TypeRegistry.IntPtr : TypeRegistry.VoidPtr;

            return null;
        }