comparison mercurial/revlog.py @ 38849:da5a666f0f78

pure: create type for revlog v0 index

The new type takes care of hiding the nullid entry. This type helps us
transition away from including that entry at index[len(index)-1].

Differential Revision: https://phab.mercurial-scm.org/D4020

38848:c0d411ea6639

# 20 bytes: nodeid
indexformatv0 = struct.Struct(">4l20s20s20s")
indexformatv0_pack = indexformatv0.pack
indexformatv0_unpack = indexformatv0.unpack

class revlogoldio(object):
    def __init__(self):
        self.size = indexformatv0.size

    def parseindex(self, data, inline):

                  nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6])
            index.append(e2)
            nodemap[e[6]] = n
            n += 1

        # add the magic null revision at -1
        index.append((0, 0, 0, -1, -1, -1, -1, nullid))

        return index, nodemap, None

    def packentry(self, entry, node, version, rev):
        if gettype(entry[0]):
            raise RevlogError(_('index entry flags need revlog version 1'))
        e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4],

38849:da5a666f0f78

# 20 bytes: nodeid
indexformatv0 = struct.Struct(">4l20s20s20s")
indexformatv0_pack = indexformatv0.pack
indexformatv0_unpack = indexformatv0.unpack

class revlogoldindex(list):
    def __len__(self):
        return list.__len__(self) + 1
    def __getitem__(self, i):
        if i == -1 or i == len(self) - 1:
            return (0, 0, 0, -1, -1, -1, -1, nullid)
        return list.__getitem__(self, i)

class revlogoldio(object):
    def __init__(self):
        self.size = indexformatv0.size

    def parseindex(self, data, inline):

                  nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6])
            index.append(e2)
            nodemap[e[6]] = n
            n += 1

        return revlogoldindex(index), nodemap, None

    def packentry(self, entry, node, version, rev):
        if gettype(entry[0]):
            raise RevlogError(_('index entry flags need revlog version 1'))
        e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4],