comparison mercurial/metadata.py @ 45659:a475db79d84d

changing-files: add a "salvaged" set to track file that were not removed

We need this set for the copy tracing algorithm. See documentation for details
about this set.

Differential Revision: https://phab.mercurial-scm.org/D9118

45658:6569b2371240

    Actions performed on files are gathered into 3 sets:

    - added:   files actively added in the changeset.
    - merged:  files whose history got merged
    - removed: files removed in the revision
    - touched: files affected by the merge

    and copies information is held by 2 mappings

    - copied_from_p1: {"<new-name>": "<source-name-in-p1>"} mapping for copies

        self,
        touched=None,
        added=None,
        removed=None,
        merged=None,
        p1_copies=None,
        p2_copies=None,
    ):
        self._added = set(() if added is None else added)
        self._merged = set(() if merged is None else merged)
        self._removed = set(() if removed is None else removed)
        self._touched = set(() if touched is None else touched)
        self._touched.update(self._added)
        self._touched.update(self._merged)
        self._touched.update(self._removed)
        self._p1_copies = dict(() if p1_copies is None else p1_copies)
        self._p2_copies = dict(() if p2_copies is None else p2_copies)

    def __eq__(self, other):
        return (
            self.added == other.added
            and self.merged == other.merged
            and self.removed == other.removed
            and self.touched == other.touched
            and self.copied_from_p1 == other.copied_from_p1
            and self.copied_from_p2 == other.copied_from_p2
        )

        self.mark_touched(filename)

    def update_removed(self, filenames):
        for f in filenames:
            self.mark_removed(f)

    @util.propertycache
    def touched(self):
        """files either actively modified, added or removed"""
        return frozenset(self._touched)

45659:a475db79d84d

    Actions performed on files are gathered into 3 sets:

    - added:   files actively added in the changeset.
    - merged:  files whose history got merged
    - removed: files removed in the revision
    - salvaged: files that might have been deleted by a merge but were not
    - touched: files affected by the merge

    and copies information is held by 2 mappings

    - copied_from_p1: {"<new-name>": "<source-name-in-p1>"} mapping for copies

        self,
        touched=None,
        added=None,
        removed=None,
        merged=None,
        salvaged=None,
        p1_copies=None,
        p2_copies=None,
    ):
        self._added = set(() if added is None else added)
        self._merged = set(() if merged is None else merged)
        self._removed = set(() if removed is None else removed)
        self._touched = set(() if touched is None else touched)
        self._salvaged = set(() if salvaged is None else salvaged)
        self._touched.update(self._added)
        self._touched.update(self._merged)
        self._touched.update(self._removed)
        self._p1_copies = dict(() if p1_copies is None else p1_copies)
        self._p2_copies = dict(() if p2_copies is None else p2_copies)

    def __eq__(self, other):
        return (
            self.added == other.added
            and self.merged == other.merged
            and self.removed == other.removed
            and self.salvaged == other.salvaged
            and self.touched == other.touched
            and self.copied_from_p1 == other.copied_from_p1
            and self.copied_from_p2 == other.copied_from_p2
        )

        self.mark_touched(filename)

    def update_removed(self, filenames):
        for f in filenames:
            self.mark_removed(f)

    @util.propertycache
    def salvaged(self):
        """files that might have been deleted by a merge, but still exists.

        During a merge, the manifest merging might select some files for
        removal, or for a removed/changed conflict. If at commit time the file
        still exists, its removal was "reverted" and the file is "salvaged"
        """
        return frozenset(self._salvaged)

    def mark_salvaged(self, filename):
        if "salvaged" in vars(self):
            del self.salvaged
        self._salvaged.add(filename)
        self.mark_touched(filename)

    def update_salvaged(self, filenames):
        for f in filenames:
            self.mark_salvaged(f)

    @util.propertycache
    def touched(self):
        """files either actively modified, added or removed"""
        return frozenset(self._touched)