comparison mercurial/localrepo.py @ 16371:4417eb761ba8

tags: defer tag validation until repo.tags() is called

Before, we were validating all tags for any tag operation, which meant
building a (nearly) full node->tag lookup tree for most operations.

16370:28bb4daf070c

        return cache

    def tags(self):
        '''return a mapping of tag to node'''
        return self._tagscache.tags

    def _findtags(self):
        '''Do the hard work of finding tags.  Return a pair of dicts
        (tags, tagtypes) where tags maps tag name to node, and tagtypes
        maps tag name to a string like \'global\' or \'local\'.

        # writing to the cache), but the rest of Mercurial wants them in
        # local encoding.
        tags = {}
        for (name, (node, hist)) in alltags.iteritems():
            if node != nullid:
                try:
                    # ignore tags to unknown nodes
                    self.changelog.lookup(node)
                    tags[encoding.tolocal(name)] = node
                except error.LookupError:
                    pass
        tags['tip'] = self.changelog.tip()
        tagtypes = dict([(encoding.tolocal(name), value)
                         for (name, value) in tagtypes.iteritems()])
        return (tags, tagtypes)

    def nodetags(self, node):
        '''return the tags associated with a node'''
        if not self._tagscache.nodetagscache:
            nodetagscache = {}
            for t, n in self.tags().iteritems():
                nodetagscache.setdefault(n, []).append(t)
            for tags in nodetagscache.itervalues():
                tags.sort()
            self._tagscache.nodetagscache = nodetagscache
        return self._tagscache.nodetagscache.get(node, [])

16371:4417eb761ba8

        return cache

    def tags(self):
        '''return a mapping of tag to node'''
        t = {}
        for k, v in self._tagscache.tags.iteritems():
            try:
                # ignore tags to unknown nodes
                self.changelog.rev(v)
                t[k] = v
            except error.LookupError:
                pass
        return t

    def _findtags(self):
        '''Do the hard work of finding tags.  Return a pair of dicts
        (tags, tagtypes) where tags maps tag name to node, and tagtypes
        maps tag name to a string like \'global\' or \'local\'.

        # writing to the cache), but the rest of Mercurial wants them in
        # local encoding.
        tags = {}
        for (name, (node, hist)) in alltags.iteritems():
            if node != nullid:
                tags[encoding.tolocal(name)] = node
        tags['tip'] = self.changelog.tip()
        tagtypes = dict([(encoding.tolocal(name), value)
                         for (name, value) in tagtypes.iteritems()])
        return (tags, tagtypes)

    def nodetags(self, node):
        '''return the tags associated with a node'''
        if not self._tagscache.nodetagscache:
            nodetagscache = {}
            for t, n in self._tagscache.tags.iteritems():
                nodetagscache.setdefault(n, []).append(t)
            for tags in nodetagscache.itervalues():
                tags.sort()
            self._tagscache.nodetagscache = nodetagscache
        return self._tagscache.nodetagscache.get(node, [])