view CONTRIBUTING @ 47790:a11520e66ade stable

typing: add several assertions to dirstatemap to appease pytype

(grafted from default to stable)

I think it's been mentioned in IRC that these can't be None in this case.  This
fixes:

    File "/mnt/c/Users/Matt/hg/mercurial/dirstatemap.py", line 213, in addfile: unsupported operand type(s) for &: 'None' and 'int' [unsupported-operands]
      No attribute '__and__' on None or '__rand__' on int
    Called from (traceback):
      line 290, in reset_state
    File "/mnt/c/Users/Matt/hg/mercurial/dirstatemap.py", line 214, in addfile: unsupported operand type(s) for &: 'None' and 'int' [unsupported-operands]
      No attribute '__and__' on None or '__rand__' on int
    Called from (traceback):
      line 290, in reset_state

Differential Revision: https://phab.mercurial-scm.org/D11235

Our full contribution guidelines are in our wiki, please see:

https://www.mercurial-scm.org/wiki/ContributingChanges

If you just want a checklist to follow, you can go straight to

https://www.mercurial-scm.org/wiki/ContributingChanges#Submission_checklist

If you can't run the entire testsuite for some reason (it can be
difficult on Windows), please at least run `contrib/check-code.py` on
any files you've modified and run `python contrib/check-commit` on any
commits you've made (for example, `python contrib/check-commit
273ce12ad8f1` will report some style violations on a very old commit).