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Make it possible to use inherited indexers#1248

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lostmsu merged 1 commit intopythonnet:masterfrom
danabr:inherited-indexers
Oct 8, 2020
Merged

Make it possible to use inherited indexers#1248
lostmsu merged 1 commit intopythonnet:masterfrom
danabr:inherited-indexers

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@danabr
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@danabr danabr commented Oct 7, 2020

What does this implement/fix? Explain your changes.

If a class A had indexer, and class B derived from it, Python.NET would
not consider class B to have any indexer.

Does this close any currently open issues?

No

Checklist

Check all those that are applicable and complete.

  • Make sure to include one or more tests for your change
  • If an enhancement PR, please create docs and at best an example
  • Add yourself to AUTHORS
  • Updated the CHANGELOG

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codecov-io commented Oct 7, 2020 •
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Codecov Report

Merging #1248 into master will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master    #1248   +/-   ##
=======================================
  Coverage   86.25%   86.25%           
=======================================
  Files           1        1           
  Lines         291      291           
=======================================
  Hits          251      251           
  Misses         40       40
Flag Coverage Δ
#setup_linux 64.94% <ø> (ø)
#setup_windows 72.50% <ø> (ø)

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@lostmsu
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lostmsu commented Oct 7, 2020

What about interfaces?

@danabr
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danabr commented Oct 7, 2020

What about interfaces?

That is already handled by #1246. The calculation of whether something has an indexer or not is done the same way for classes and interfaces. It is all based on the implementation class.

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lostmsu commented Oct 7, 2020 •
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@danabr just to clarify. So if I have interface IExtra: IIndexed with indexer defined in IIndexed, but not in IExtra, and in Python do extra = IExtra(extra_impl) (e.g. explicit cast to IExtra), I would be able to do extra[1234]?

If so, I think a test for that scenario should be added to test_indexer_accessed_through_interface introduced in your previous PR.

@danabr
Make it possible to use inherited indexers
1a3d75d 
If a class A had indexer, and class B derived from it, Python.NET would
not consider class B to have any indexer.
@danabr danabr force-pushed the inherited-indexers branch from b40da05 to 1a3d75d Compare October 8, 2020 05:42
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danabr commented Oct 8, 2020

Yes. The requested test has been added.

@lostmsu lostmsu merged commit c79be84 into pythonnet:master Oct 8, 2020
@christabella christabella mentioned this pull request Dec 24, 2020
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christabella commented Dec 24, 2020

This closes #256

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@danabr @codecov-io @lostmsu @christabella