comparison mercurial/commit.py @ 48716:f1eb77dceb36

narrow: allow merging non-conflicting change outside of the narrow spec

We use the mergestate to carry information about these merge action and
reprocess them at commit time to apply the necessary update.

The dirstate itself is never affected and remains "pure", with content only in
the narrow-spec. This file involved in such merge are therefor not listed in `hg
status`.

The current testing is based on a modification of the previous testing, that
refused to do such merges. As a result it is a bit simple and more extensive
code and testing testing will have to be introduced later. I am planning to do
this extra testing, soon.

In addition, this only works for flat manifest. Support for tree manifest will
need more work. I am not currently planning to do this work.

Differential Revision: https://phab.mercurial-scm.org/D12119

48715:7d073df49a54

    ms = mergestate.mergestate.read(repo)
    salvaged = _get_salvaged(repo, ms, ctx)
    for s in salvaged:
        files.mark_salvaged(s)

    if ctx.manifestnode():
        # reuse an existing manifest revision
        repo.ui.debug(b'reusing known manifest\n')
        mn = ctx.manifestnode()
        files.update_touched(ctx.files())
        if writechangesetcopy:
            files.update_added(ctx.filesadded())
            files.update_removed(ctx.filesremoved())
    elif not ctx.files():
        repo.ui.debug(b'reusing manifest from p1 (no file change)\n')
        mn = p1.manifestnode()
    else:
        mn = _process_files(tr, ctx, ms, files, error=error)

    if origctx and origctx.manifestnode() == mn:
        origfiles = origctx.files()
        assert files.touched.issubset(origfiles)
        files.update_touched(origfiles)

                    if fname in ctx:
                        salvaged.append(fname)
    return salvaged


def _process_files(tr, ctx, ms, files, error=False):
    repo = ctx.repo()
    p1 = ctx.p1()
    p2 = ctx.p2()

    writechangesetcopy, writefilecopymeta = _write_copy_meta(repo)

    added = []
    removed = list(ctx.removed())
    linkrev = len(repo)
    repo.ui.note(_(b"committing files:\n"))
    uipathfn = scmutil.getuipathfn(repo)
    for f in sorted(ctx.modified() + ctx.added()):
        repo.ui.note(uipathfn(f) + b"\n")
        try:
            fctx = ctx[f]
            if fctx is None:
                removed.append(f)
            else:

        rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2))
        for f in removed:
            if not rf(f):
                files.mark_removed(f)

    mn = _commit_manifest(tr, linkrev, ctx, mctx, m, files.touched, added, drop)

    return mn


def _filecommit(

    else:
        fnode = fparent1
    return fnode, touched


def _commit_manifest(tr, linkrev, ctx, mctx, manifest, files, added, drop):
    """make a new manifest entry (or reuse a new one)

    given an initialised manifest context and precomputed list of
    - files: files affected by the commit
    - added: new entries in the manifest

        # ignoring things outside of narrowspec in most cases. The
        # one case where we might have files outside the narrowspec
        # at this point is merges, and we already error out in the
        # case where the merge has files outside of the narrowspec,
        # so this is safe.
        mn = mctx.write(
            tr,
            linkrev,
            p1.manifestnode(),
            p2.manifestnode(),
            added,
            drop,
            match=repo.narrowmatch(),
        )
    else:
        repo.ui.debug(
            b'reusing manifest from p1 (listed files ' b'actually unchanged)\n'
        )

48716:f1eb77dceb36

    ms = mergestate.mergestate.read(repo)
    salvaged = _get_salvaged(repo, ms, ctx)
    for s in salvaged:
        files.mark_salvaged(s)

    narrow_files = {}
    if not ctx.repo().narrowmatch().always():
        for f, e in ms.allextras().items():
            action = e.get(b'outside-narrow-merge-action')
            if action is not None:
                narrow_files[f] = action
    if ctx.manifestnode() and not narrow_files:
        # reuse an existing manifest revision
        repo.ui.debug(b'reusing known manifest\n')
        mn = ctx.manifestnode()
        files.update_touched(ctx.files())
        if writechangesetcopy:
            files.update_added(ctx.filesadded())
            files.update_removed(ctx.filesremoved())
    elif not ctx.files() and not narrow_files:
        repo.ui.debug(b'reusing manifest from p1 (no file change)\n')
        mn = p1.manifestnode()
    else:
        mn = _process_files(tr, ctx, ms, files, narrow_files, error=error)

    if origctx and origctx.manifestnode() == mn:
        origfiles = origctx.files()
        assert files.touched.issubset(origfiles)
        files.update_touched(origfiles)

                    if fname in ctx:
                        salvaged.append(fname)
    return salvaged


def _process_files(tr, ctx, ms, files, narrow_files=None, error=False):
    repo = ctx.repo()
    p1 = ctx.p1()
    p2 = ctx.p2()

    writechangesetcopy, writefilecopymeta = _write_copy_meta(repo)

    added = []
    removed = list(ctx.removed())
    linkrev = len(repo)
    repo.ui.note(_(b"committing files:\n"))
    uipathfn = scmutil.getuipathfn(repo)
    all_files = ctx.modified() + ctx.added()
    all_files.extend(narrow_files.keys())
    all_files.sort()
    for f in all_files:
        repo.ui.note(uipathfn(f) + b"\n")
        if f in narrow_files:
            narrow_action = narrow_files.get(f)
            if narrow_action == mergestate.CHANGE_MODIFIED:
                files.mark_touched(f)
                added.append(f)
                m[f] = m2[f]
                flags = m2ctx.find(f)[1] or b''
                m.setflag(f, flags)
            else:
                msg = _(b"corrupted mergestate, unknown narrow action: %b")
                hint = _(b"restart the merge")
                raise error.Abort(msg, hint=hint)
            continue
        try:
            fctx = ctx[f]
            if fctx is None:
                removed.append(f)
            else:

        rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2))
        for f in removed:
            if not rf(f):
                files.mark_removed(f)

    mn = _commit_manifest(
        tr,
        linkrev,
        ctx,
        mctx,
        m,
        files.touched,
        added,
        drop,
        bool(narrow_files),
    )

    return mn


def _filecommit(

    else:
        fnode = fparent1
    return fnode, touched


def _commit_manifest(
    tr,
    linkrev,
    ctx,
    mctx,
    manifest,
    files,
    added,
    drop,
    has_some_narrow_action=False,
):
    """make a new manifest entry (or reuse a new one)

    given an initialised manifest context and precomputed list of
    - files: files affected by the commit
    - added: new entries in the manifest

        # ignoring things outside of narrowspec in most cases. The
        # one case where we might have files outside the narrowspec
        # at this point is merges, and we already error out in the
        # case where the merge has files outside of the narrowspec,
        # so this is safe.
        if has_some_narrow_action:
            match = None
        else:
            match = repo.narrowmatch()
        mn = mctx.write(
            tr,
            linkrev,
            p1.manifestnode(),
            p2.manifestnode(),
            added,
            drop,
            match=match,
        )
    else:
        repo.ui.debug(
            b'reusing manifest from p1 (listed files ' b'actually unchanged)\n'
        )