basectx: add an empty class that will be used as a parent of all contexts
At the moment, there is no simple way to check if an object is a context
because there is no common parent class. If there were, we could use
'isinstance' everywhere. Simply having memctx inherit from workingctx or
changectx would allow the use of 'isinstance' but that could lead to some
confusing situations of reading the code since we have three distinct concepts
of a context:
- changectx represents a changeset *already* in the repo, and is therefore immutable
- workingctx represents changes on disk in the working directory
- memctx represents changes solely in memory which may or may not be on disk
Therefore, I propose refactoring context.py to have all three contexts inherit
from a parent class 'basectx'.
# this is hack to make sure no escape characters are inserted into the output
import os
if 'TERM' in os.environ:
del os.environ['TERM']
import doctest
import mercurial.util
doctest.testmod(mercurial.util)
# Only run doctests for the current platform
doctest.testmod(mercurial.util.platform)
import mercurial.changelog
doctest.testmod(mercurial.changelog)
import mercurial.dagparser
doctest.testmod(mercurial.dagparser, optionflags=doctest.NORMALIZE_WHITESPACE)
import mercurial.match
doctest.testmod(mercurial.match)
import mercurial.store
doctest.testmod(mercurial.store)
import mercurial.ui
doctest.testmod(mercurial.ui)
import mercurial.url
doctest.testmod(mercurial.url)
import mercurial.dispatch
doctest.testmod(mercurial.dispatch)
import mercurial.encoding
doctest.testmod(mercurial.encoding)
import mercurial.hgweb.hgwebdir_mod
doctest.testmod(mercurial.hgweb.hgwebdir_mod)
import hgext.convert.cvsps
doctest.testmod(hgext.convert.cvsps)
import mercurial.revset
doctest.testmod(mercurial.revset)
import mercurial.minirst
doctest.testmod(mercurial.minirst)
import mercurial.templatefilters
doctest.testmod(mercurial.templatefilters)