comparison mercurial/match.py @ 32554:f44ea253ffe2

match: optimize visitdir() for when no explicit files are listed

In patternmatcher, we used to say that all directories should be
visited if no explicit files were listed, because the case of empty
_files usually implied that no patterns were given (which in turns
meant that everything should match). However, this made e.g. "hg files
-r .  rootfilesin:."  slower than necessary, because that also ended
up with an empty list in _files. Now that patternmatcher does not
handle includes, the only remaining case where its _files/_fileset
fields will be empty is when it's matching everything. We can
therefore treat the always-case specially and stop treating the empty
_files case specially. This makes the case mentioned above faster on
treemanifest repos.

32553:20c9f3ecc192

    @propertycache
    def _dirs(self):
        return set(util.dirs(self._fileset)) | {'.'}

    def visitdir(self, dir):
        if self.prefix() and dir in self._fileset:
            return 'all'
        return (not self._fileset or
                '.' in self._fileset or
                dir in self._fileset or
                dir in self._dirs or
                any(parentdir in self._fileset
                    for parentdir in util.finddirs(dir)))

32554:f44ea253ffe2

    @propertycache
    def _dirs(self):
        return set(util.dirs(self._fileset)) | {'.'}

    def visitdir(self, dir):
        if self.always():
            return 'all'
        if self.prefix() and dir in self._fileset:
            return 'all'
        return ('.' in self._fileset or
                dir in self._fileset or
                dir in self._dirs or
                any(parentdir in self._fileset
                    for parentdir in util.finddirs(dir)))