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Change mediawiki-phan-config to let phan read class alias
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The most wmf deployed extensions now how phan active. Phan is looking amongst other things for undeclared classes. This can happen when a use statement is missing or a typo is in the name.

On refactoring into namespaced classes the phan build can break for extensions using core classes or classes from a dependency extensions, which is changed. One example is shown in T224704

Should we set the phan config enable_class_alias_support to reduce the impact of namespacing classes?
Some extensions needs to use the alias to keep compatibility for older releases.

The option is there since 0.9.3 -

I have not tested it, if the place of class_alias is correct.

// If true, Phan will read `class_alias` calls in the global scope,
// then (1) create aliases from the *parsed* files if no class definition was found,
// and (2) emit issues in the global scope if the source or target class is invalid.
// (If there are multiple possible valid original classes for an aliased class name,
//  the one which will be created is unspecified.)
// NOTE: THIS IS EXPERIMENTAL, and the implementation may change.
'enable_class_alias_support' => true,

That would also means that alias like IDatabase can be used again and not reported by phan, but that is not a big deal when seeing the impact which a class using cross all repositories

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 31 2019, 9:55 PM

Change 513541 had a related patch set uploaded (by Jforrester; owner: MaxSem):
[mediawiki/tools/phan@master] Enable enable_class_alias_support

Change 513541 merged by jenkins-bot:
[mediawiki/tools/phan@master] Enable enable_class_alias_support

Daimona closed this task as Resolved.Jun 4 2019, 12:54 PM
Daimona removed a project: Patch-For-Review.
Daimona added a subscriber: Daimona.

Patch merged, 0.6.1 released, calling resolved.