This moves our current/legacy attributes to the ones added in dotnet 5 [1].
Short Forms (only in bindings)
| Old | New |
|---------------------------------------|-------------------------------------|
| [iOS (7,0)] | [SupportedOSPlatform ("ios7.0")] |
| [NoIOS] | [UnsupportedOSPlatform ("ios")] |
Long Forms
| Old | New |
|---------------------------------------|-------------------------------------|
| [Introduced (PlatformName.iOS, 7,0)] | [SupportedOSPlatform ("ios7.0")] |
| [Obsoleted (PlatformName.iOS, 12,1)] | [Obsolete (...)] |
| [Deprecated (PlatformName.iOS, 14,3)] | [UnsupportedOSPlatform ("ios14.3")] |
| [Unavailable (PlatformName.iOS)] | [UnsupportedOSPlatform ("ios")] |
Other changes
* `[SupportedOSPlatform]` and `[UnsupportedOSPlatform]` are not allowed on `interface` [2] which means they cannot be used for protocols. This is currently handled by inlining the existing attributes on all members.
* `[ObsoletedInOSPlatform]` was removed in net5 RC. This PR is now mapping the existing attributes to `[Obsolote]`, however multiple ones cannot be added so they need to be platform specific.
Remaining work (manual bindings update) tracked in https://github.com/xamarin/xamarin-macios/issues/11055
References
* [1] https://github.com/xamarin/xamarin-macios/issues/10170
* [2] https://github.com/dotnet/runtime/issues/47599
* [3] https://github.com/dotnet/runtime/issues/47601
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