Copy ctor handling for crossgen2#40113
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davidwrighton merged 2 commits intodotnet:masterfrom Jul 30, 2020
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- Add IL based test for copy ctor to allow testing in Crossgen2 which doesn't yet support IJW - Add api to determine proper EmbeddedSignatureData index for these - And tests to ensure this remains functional - Marshaller changes to recognize copy constructor cases - Note that there isn't actual marshaller support. Instead the compiler can now able to detect when copy ctors should be used, and falls back to the runtime interop layer
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@dotnet/crossgen-contrib |
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@jkoritzinsky I've added this IL only copy ctor test in order to get coverage on this form of marshalling in crossgen2. |
jkoritzinsky
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Jul 30, 2020
MichalStrehovsky
approved these changes
Jul 30, 2020
| internal static MarshallerKind GetMarshallerKind( | ||
| TypeDesc type, | ||
| MarshalAsDescriptor marshalAs, | ||
| int? parameterIndex, |
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Indentation looks off.
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| type = type.GetParameterType(); | ||
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| if (!type.IsPrimitive && type.IsValueType && !(marshallerType == MarshallerType.Field) |
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| if (!type.IsPrimitive && type.IsValueType && !(marshallerType == MarshallerType.Field) | |
| if (!type.IsPrimitive && type.IsValueType && marshallerType != MarshallerType.Field |
| // Parameter index 0 represents the return type, and indices 1-n represent the parameters to the signature | ||
| public static string GetIndexOfCustomModifierOnPointedAtTypeByParameterIndex(int parameterIndex) | ||
| { | ||
| return $"0.1.1.2.{(parameterIndex + 1).ToStringInvariant()}.1"; |
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Not reviewing this part. I don't want to spend time learning how this address is computed because that code upsets me.
| if (nativeType == NativeTypeKind.Default) | ||
| { | ||
| var pointedAtType = type.GetParameterType(); | ||
| if (!pointedAtType.IsPrimitive && !type.IsEnum && !(marshallerType == MarshallerType.Field) |
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| if (!pointedAtType.IsPrimitive && !type.IsEnum && !(marshallerType == MarshallerType.Field) | |
| if (!pointedAtType.IsPrimitive && !type.IsEnum && marshallerType != MarshallerType.Field |
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- Add IL based test for copy ctor to allow testing in Crossgen2 which doesn't yet support IJW - Add api to determine proper EmbeddedSignatureData index for these - And tests to ensure this remains functional - Marshaller changes to recognize copy constructor cases - Note that there isn't actual marshaller support. Instead the compiler can now able to detect when copy ctors should be used, and falls back to the runtime interop layer
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Fixes #39423
Note that with this change there is only one more case of custom modifier examination that is used to affect runtime codegen. (The use of the IsCXXReferenceModifier type when searching for destructors to implement this form of marshalling.) Also, as that syntax hasn't been generated from a C++/CLI compiler in many years, it is unlikely that it will ever need to be implemented.