comparison mercurial/scmutil.py @ 29373:36fbd72c2f39

scmutil: allow access to filecache descriptor on class

To make it easier to patch the wrapped function, make it possible to access the
filecache descriptor directly on the class (rather than have to use
ClassObject.__dict__['attributename']). Returning `self` when the first
argument to `__get__` is `None` makes the descriptor behave the same way
`property` objects do.

29372:0b5e9a625042

        self.func = func
        self.name = func.__name__
        return self

    def __get__(self, obj, type=None):
        # do we need to check if the file changed?
        if self.name in obj.__dict__:
            assert self.name in obj._filecache, self.name
            return obj.__dict__[self.name]

29373:36fbd72c2f39

        self.func = func
        self.name = func.__name__
        return self

    def __get__(self, obj, type=None):
        # if accessed on the class, return the descriptor itself.
        if obj is None:
            return self
        # do we need to check if the file changed?
        if self.name in obj.__dict__:
            assert self.name in obj._filecache, self.name
            return obj.__dict__[self.name]