[Mono.Android.dll] Add support for ObsoletedOSPlatformAttribute
#7234
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jonpryor
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Aug 23, 2022
…#1024) Context: dotnet/android#7234 Refactor logic for applying `[Obsolete]` attributes into a single common method. This method will later be extended to add support for [`[ObsoletedOSPlatformAttribute]`][0]. Doing this piece first and separately allows us to verify that the refactor does not break anything, as the existing logic is tricky. A future PR will also remove the temporary hacks used to preserve stylistic compatibility with a `generator` refactor in 6bbb00a. [0]: dotnet/runtime#72970
jonpryor
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Aug 23, 2022
Context: dotnet/android#7234 Add support for a new option `generator --lang-features=obsoleted-platform-attributes`. When used, for an API that was obsoleted in API levels greater than our .NET 7 minimum (API-21), we will generate .NET 7's new `[ObsoletedOSPlatform]` attribute *instead of* `[Obsolete]`: // New [global::System.Runtime.Versioning.ObsoletedOSPlatform ("android22.0", @"This class is obsoleted in this android platform")] public partial class CookieSpecParamBean : Org.Apache.Http.Params.HttpAbstractParamBean { } // Previous [global::System.Obsolete (@"This class is obsoleted in this android platform")] public partial class CookieSpecParamBean : Org.Apache.Http.Params.HttpAbstractParamBean { } This is useful in a .NET 7+ context because we always *compile* against the "latest" `Mono.Android`, even if you are *targeting* an earlier version. For example, the use of `[Obsolete]` means that using `CookieSpecParamBean` would always result in a CS0618 obsolete usage warning, even when building with `$(SupportedOSPlatformVersion)`=21. (`CookieSpecParamBean` was obsoleted in API-22.)
jonathanpeppers
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Aug 24, 2022
Fixes: #7234 Changes: dotnet/java-interop@a5756ca...e31d9c6 * dotnet/java-interop@e31d9c62: Context: #7285 (comment) (#1029) * dotnet/java-interop@d3ea180c: [generator] Add support for `[ObsoletedOSPlatform]` (#1026) * dotnet/java-interop@6d1ae4ee: [generator] Remove [Obsolete] style compatibility hacks. (#1025) * dotnet/java-interop@440c05ee: [generator] Refactor logic for applying [Obsolete] attributes (#1024) * dotnet/java-interop@9b1d3ab7: [Localization] Import translated resx files (#1018) `generator` can now emit `[ObsoletedOSPlatformAttribute]`. Requires: - Update `Mono.Android.targets` to pass `lang-feature=obsoleted-platform-attributes` to `generator` when building for .NET 7+ - Update `acceptable-breakages-vReference-net7.0.txt` to account for removing existing `[Obsolete]` attributes in favor of the new ones, for .NET 7+ only
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Context: #6349
Context: dotnet/runtime#47601
Imagine Android adds a new overload of a method and deprecates the existing method:
If you are compiling against API-33 reference assemblies, there is no reasonable way to consume this API without generating an "obsolete" warning:
In .NET 6 we did not have a good way to express "obsoleted in API X" warnings. In .NET 7
[ObsoletedOSPlatformAttribute]has been added, allowing us to express this properly.In order to support this, we will need to:
Extend-api-mergeto generateobsoleted-indataapi-mergealready generatesdeprecated-since([api-merge] add deprecation platform information to API description #824)generatorto consume that data and output the new attribute ([generator] Add support for[ObsoletedOSPlatform]. java-interop#1026)The text was updated successfully, but these errors were encountered: