comparison mercurial/merge.py @ 45518:32ce4cbaec4b

mergedriver: delete it

The merge driver code was added in late 2015. I think
'406a654b::6f045b56 & user("sid0")' is a reasonable revset for finding
the relevant commits, including preparation for it. The code is very
poorly tested, which makes it very hard to maintain. It seems it's
only used by FB and they don't use this code base anymore, so let's
remove the code to make it easier for us to maintain our product.

Differential Revision: https://phab.mercurial-scm.org/D9041

45517:2a68a5ec8dd0

                % (lastfull, f)
            )
        foldprefix = fold + b'/'
        unfoldprefix = f + b'/'
        lastfull = f


def driverpreprocess(repo, ms, wctx, labels=None):
    """run the preprocess step of the merge driver, if any

    This is currently not implemented -- it's an extension point."""
    return True


def driverconclude(repo, ms, wctx, labels=None):
    """run the conclude step of the merge driver, if any

    This is currently not implemented -- it's an extension point."""
    return True


def _filesindirs(repo, manifest, dirs):
    """
    Generator that yields pairs of all the files in the manifest that are found

            mergestatemod.ACTION_EXEC,
            mergestatemod.ACTION_LOCAL_DIR_RENAME_GET,
            mergestatemod.ACTION_DIR_RENAME_MOVE_LOCAL,
        )
    )
    # the ordering is important here -- ms.mergedriver will raise if the merge
    # driver has changed, and we want to be able to bypass it when overwrite is
    # True
    usemergedriver = not overwrite and mergeactions and ms.mergedriver

    if usemergedriver:
        ms.commit()
        proceed = driverpreprocess(repo, ms, wctx, labels=labels)
        # the driver might leave some files unresolved
        unresolvedf = set(ms.unresolved())
        if not proceed:
            # XXX setting unresolved to at least 1 is a hack to make sure we
            # error out
            return updateresult(
                updated, merged, removed, max(len(unresolvedf), 1)
            )
        newactions = []
        for f, args, msg in mergeactions:
            if f in unresolvedf:
                newactions.append((f, args, msg))
        mergeactions = newactions

    try:
        # premerge
        tocomplete = []
        for f, args, msg in mergeactions:

    finally:
        ms.commit()

    unresolved = ms.unresolvedcount()

    if (
        usemergedriver
        and not unresolved
        and ms.mdstate() != mergestatemod.MERGE_DRIVER_STATE_SUCCESS
    ):
        if not driverconclude(repo, ms, wctx, labels=labels):
            # XXX setting unresolved to at least 1 is a hack to make sure we
            # error out
            unresolved = max(unresolved, 1)

        ms.commit()

    msupdated, msmerged, msremoved = ms.counts()
    updated += msupdated
    merged += msmerged
    removed += msremoved

    extraactions = ms.actions()
    if extraactions:
        mfiles = {
            a[0] for a in mresult.getactions((mergestatemod.ACTION_MERGE,))
        }
        for k, acts in pycompat.iteritems(extraactions):
            for a in acts:
                mresult.addfile(a[0], k, *a[1:])
            if k == mergestatemod.ACTION_GET and wantfiledata:
                # no filedata until mergestate is updated to provide it
                for a in acts:
                    getfiledata[a[0]] = None
            # Remove these files from actions[ACTION_MERGE] as well. This is
            # important because in recordupdates, files in actions[ACTION_MERGE]
            # are processed after files in other actions, and the merge driver
            # might add files to those actions via extraactions above. This can
            # lead to a file being recorded twice, with poor results. This is
            # especially problematic for actions[ACTION_REMOVE] (currently only
            # possible with the merge driver in the initial merge process;
            # interrupted merges don't go through this flow).
            #
            # The real fix here is to have indexes by both file and action so
            # that when the action for a file is changed it is automatically
            # reflected in the other action lists. But that involves a more
            # complex data structure, so this will do for now.
            #
            # We don't need to do the same operation for 'dc' and 'cd' because
            # those lists aren't consulted again.
            mfiles.difference_update(a[0] for a in acts)

        for a in list(mresult.getactions((mergestatemod.ACTION_MERGE,))):
            if a[0] not in mfiles:
                mresult.removefile(a[0])

    progress.complete()
    assert len(getfiledata) == (
        mresult.len((mergestatemod.ACTION_GET,)) if wantfiledata else 0
    )

45518:32ce4cbaec4b

                % (lastfull, f)
            )
        foldprefix = fold + b'/'
        unfoldprefix = f + b'/'
        lastfull = f


def _filesindirs(repo, manifest, dirs):
    """
    Generator that yields pairs of all the files in the manifest that are found

            mergestatemod.ACTION_EXEC,
            mergestatemod.ACTION_LOCAL_DIR_RENAME_GET,
            mergestatemod.ACTION_DIR_RENAME_MOVE_LOCAL,
        )
    )

    try:
        # premerge
        tocomplete = []
        for f, args, msg in mergeactions:

    finally:
        ms.commit()

    unresolved = ms.unresolvedcount()

    msupdated, msmerged, msremoved = ms.counts()
    updated += msupdated
    merged += msmerged
    removed += msremoved

    extraactions = ms.actions()
    if extraactions:
        for k, acts in pycompat.iteritems(extraactions):
            for a in acts:
                mresult.addfile(a[0], k, *a[1:])
            if k == mergestatemod.ACTION_GET and wantfiledata:
                # no filedata until mergestate is updated to provide it
                for a in acts:
                    getfiledata[a[0]] = None

    progress.complete()
    assert len(getfiledata) == (
        mresult.len((mergestatemod.ACTION_GET,)) if wantfiledata else 0
    )