comparison mercurial/revlogutils/deltas.py @ 51065:f71f07a679b4

revlog: remove legacy usage of `_sparserevlog`

All core code is now getting the setting from the DeltaConfig object.

51064:47d43efda8b7

    #   In the sparse-revlog case, we rely on the associated "sparse reading"
    #   to avoid issue related to the span of data. In theory, it would be
    #   possible to build pathological revlog where delta pattern would lead
    #   to too many reads. However, they do not happen in practice at all. So
    #   we skip the span check entirely.
    if not revlog._sparserevlog and maxdist < deltainfo.distance:
        return False

    # Bad delta from new delta size:
    #
    #   If the delta size is larger than the target text, storing the

        or not revlog.delta_config.general_delta
    )

    deltalength = revlog.length
    deltaparent = revlog.deltaparent
    sparse = revlog._sparserevlog
    good = None

    deltas_limit = textlen * LIMIT_DELTA2TEXT
    group_chunk_size = revlog.delta_config.candidate_group_chunk_size

        good = yield candidates
        if good is not None:
            break

    # If sparse revlog is enabled, we can try to refine the available deltas
    if not revlog._sparserevlog:
        yield None
        return

    # if we have a refinable value, try to refine it
    if good is not None and good not in (p1, p2) and revlog.issnapshot(good):

    The group order aims at providing fast or small candidates first.
    """
    # Why search for delta base if we cannot use a delta base ?
    assert revlog.delta_config.general_delta
    # also see issue6056
    sparse = revlog._sparserevlog
    curr = len(revlog)
    prev = curr - 1
    deltachain = lambda rev: revlog._deltachain(rev)[0]

    # exclude already lazy tested base if any

                )
                msg %= (base, target_rev)
                raise error.ProgrammingError(msg)
            deltabase = chainbase
        snapshotdepth = None
        if revlog._sparserevlog and deltabase == nullrev:
            snapshotdepth = 0
        elif revlog._sparserevlog and revlog.issnapshot(deltabase):
            # A delta chain should always be one full snapshot,
            # zero or more semi-snapshots, and zero or more deltas
            p1, p2 = revlog.rev(revinfo.p1), revlog.rev(revinfo.p2)
            if deltabase not in (p1, p2) and revlog.issnapshot(deltabase):
                snapshotdepth = len(revlog._deltachain(deltabase)[0])

51065:f71f07a679b4

    #   In the sparse-revlog case, we rely on the associated "sparse reading"
    #   to avoid issue related to the span of data. In theory, it would be
    #   possible to build pathological revlog where delta pattern would lead
    #   to too many reads. However, they do not happen in practice at all. So
    #   we skip the span check entirely.
    if not revlog.delta_config.sparse_revlog and maxdist < deltainfo.distance:
        return False

    # Bad delta from new delta size:
    #
    #   If the delta size is larger than the target text, storing the

        or not revlog.delta_config.general_delta
    )

    deltalength = revlog.length
    deltaparent = revlog.deltaparent
    sparse = revlog.delta_config.sparse_revlog
    good = None

    deltas_limit = textlen * LIMIT_DELTA2TEXT
    group_chunk_size = revlog.delta_config.candidate_group_chunk_size

        good = yield candidates
        if good is not None:
            break

    # If sparse revlog is enabled, we can try to refine the available deltas
    if not revlog.delta_config.sparse_revlog:
        yield None
        return

    # if we have a refinable value, try to refine it
    if good is not None and good not in (p1, p2) and revlog.issnapshot(good):

    The group order aims at providing fast or small candidates first.
    """
    # Why search for delta base if we cannot use a delta base ?
    assert revlog.delta_config.general_delta
    # also see issue6056
    sparse = revlog.delta_config.sparse_revlog
    curr = len(revlog)
    prev = curr - 1
    deltachain = lambda rev: revlog._deltachain(rev)[0]

    # exclude already lazy tested base if any

                )
                msg %= (base, target_rev)
                raise error.ProgrammingError(msg)
            deltabase = chainbase
        snapshotdepth = None
        if revlog.delta_config.sparse_revlog and deltabase == nullrev:
            snapshotdepth = 0
        elif revlog.delta_config.sparse_revlog and revlog.issnapshot(deltabase):
            # A delta chain should always be one full snapshot,
            # zero or more semi-snapshots, and zero or more deltas
            p1, p2 = revlog.rev(revinfo.p1), revlog.rev(revinfo.p2)
            if deltabase not in (p1, p2) and revlog.issnapshot(deltabase):
                snapshotdepth = len(revlog._deltachain(deltabase)[0])