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Update constructor TypeToTypeInfoMarshaler() signature to static #2536

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Merged
merged 7 commits into from
Jun 5, 2019
Merged

Update constructor TypeToTypeInfoMarshaler() signature to static #2536

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a31dd2a
Update constructor TypeToTypeInfoMarshaler() signature to static
EugeneKramer Jun 3, 2019
f9228f3
Public static constructor -> static constructor
EugeneKramer Jun 3, 2019
4e262dd
Update xml/System.Runtime.InteropServices.CustomMarshalers/TypeToType…
EugeneKramer Jun 4, 2019
0d05d50
Update xml/System.Runtime.InteropServices.CustomMarshalers/TypeToType…
EugeneKramer Jun 4, 2019
21f240a
Update constructor EnumerableToDispatchMarshaler() signature to publi…
EugeneKramer Jun 5, 2019
1032c2d
Update constructor EnumeratorToEnumVariantMarshaler() signature to pu…
EugeneKramer Jun 5, 2019
c070d56
Update constructor ExpandoToDispatchExMarshaler() signature to static…
EugeneKramer Jun 5, 2019
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8 changes: 4 additions & 4 deletions xml/System.Runtime.InteropServices.CustomMarshalers/TypeToTypeInfoMarshaler.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -36,11 +36,11 @@
</Docs>
<Members>
<Member MemberName=".cctor">
<MemberSignature Language="C#" Value="public TypeToTypeInfoMarshaler ();" />
<MemberSignature Language="C#" Value="public static TypeToTypeInfoMarshaler ();" />
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Is it really a public static constructor? I don't have .NET 1.1 (API browser claims that it's a latest version where this member is available), but in modern environment one cannot declare static constructor as public in C#, it generates compiler error CS0515.

Is there even a reason why API Docs should include static constructor? It is not really an "API", in a sence that one cannot use it directly. Moreover, currently the docs do not seem to provide any useful information about it, besides the fact it was removed in .NET 2.0.

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You're correct. It's a static constructor for a public class. I've removed the public access modifier for the C# and VB.Net static constructor. C++ does not support static constructors, so I've reverted the addition of the static modifier.

While a static constructor cannot be accessed directly, it is called prior to any first instance/usage of the type, which can lead to unusual exceptions such as TypeInitializationException which explicitly note "What often makes this exception difficult to troubleshoot is that static constructors are not always explicitly defined in source code." As such, the presence of a static constructor should be noted in the documentation.

A deprecated static constructor is listed for each of the 4 classes in the System.Runtime.InteropServices.CustomMarshalers Namespace. A separate page for the static constructors is probably unnecessary, but their presence should be noted as a remark.

Appreciate the feedback!

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Thanks for submitting this PR and raising the issue of a static constructor appearing in our doc set, @EugeneKramer. Since method signatures are gathered using reflection, I'm not sure that the changed signature won't be overwritten by the next reflection. But I'm also not sure why a static constructor is documented in the first place -- though I don't recall whether 2.0 introduced a change in the way static constructors were handled from 1.0/1.1.

@dend @joelmartinez, do you have any sense of why this constructor is marked as public and appears in the documentation? My guess would be that this is the only static constructor documented in the managed reference.,

I would think that the ILAsm signature also needs to change, although I no longer have any .NET Framework 1.1 assemblies.

For the moment, I'll mark this PR as blocked.

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@mairaw mairaw Jun 4, 2019 •
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MSDN also had this constructor:
https://msdn.microsoft.com/en-us/library/03faz537(v=vs.80).aspx?toc=xxx

with the same signature that @EugeneKramer is proposing.

@rpetrusha you can access any version of the assemblies at https://apidrop.visualstudio.com/_git/binaries?path=%2Fdotnet&version=GBmaster

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apisof.net also lists this constructor, so I think it's fine to have it if we fix the signature
https://apisof.net/catalog/System.Runtime.InteropServices.CustomMarshalers.TypeToTypeInfoMarshaler..cctor()

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I still find this bizarre, but the static constructor is clearly public in .NET Framework 1.1. So correcting the syntax is appropriate. Is the correct syntax likely to be overwritten, @mairaw?

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Is the correct syntax likely to be overwritten

Yes ... this needs to be fixed in mdoc's signature formatters. It will reset these next time an update is run.

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@rpetrusha - As mentioned earlier, there are public static constructors listed for each of the 4 classes in the System.Runtime.InteropServices.CustomMarshalers Namespace with the same public signature. If this PR is going through, should each of their signatures be updated...or should a separate PR be opened?

System.Runtime.InteropServices.CustomMarshalers Namespace:

Provides the static class constructor.

  1. EnumerableToDispatchMarshaler Constructor
  2. EnumeratorToEnumVariantMarshaler Constructor
  3. ExpandoToDispatchExMarshaler Constructor
  4. TypeToTypeInfoMarshaler Constructor

All were deprecated in .Net 2.0.

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@joelmartinez I've opened an internal mdoc bug for this:
Bug 97094: [mdoc] wrong signature for public static constructors in .NET Framework 1.1

<MemberSignature Language="ILAsm" Value=".method public static specialname rtspecialname void .cctor() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Runtime.InteropServices.CustomMarshalers.TypeToTypeInfoMarshaler.#cctor" />
<MemberSignature Language="VB.NET" Value="Public Sub New ()" />
<MemberSignature Language="C++ CLI" Value="public:&#xA; TypeToTypeInfoMarshaler();" />
<MemberSignature Language="VB.NET" Value="Public Shared Sub New ()" />
<MemberSignature Language="C++ CLI" Value="public:&#xA; static TypeToTypeInfoMarshaler();" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>CustomMarshalers</AssemblyName>
Expand Down Expand Up @@ -280,4 +280,4 @@
</Docs>
</Member>
</Members>
</Type>
</Type>