view tests/bruterebase.py @ 51610:6c39edd1d348 stable

re2: make errors quiet

By default, the re2 library will output error on its own instead of keeping the
error in an exception. This make re2 printing spurious error before fallback to
the stdlib remodule that may accept the pattern or also fails to parse it and
raise a proper error that will be handled by Mercurial.

So we also pass an Option object that changes this default.

# bruterebase.py - brute force rebase testing
#
# Copyright 2017 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.


from mercurial import (
    error,
    registrar,
    revsetlang,
)

from hgext import rebase

cmdtable = {}
command = registrar.command(cmdtable)


@command(b'debugbruterebase')
def debugbruterebase(ui, repo, source, dest):
    """for every non-empty subset of source, run rebase -r subset -d dest

    Print one line summary for each subset. Assume obsstore is enabled.
    """
    srevs = list(repo.revs(source))

    with repo.wlock(), repo.lock():
        repolen = len(repo)
        cl = repo.changelog

        def getdesc(rev):
            result = cl.changelogrevision(rev).description
            if rev >= repolen:
                result += b"'"
            return result

        for i in range(1, 2 ** len(srevs)):
            subset = [rev for j, rev in enumerate(srevs) if i & (1 << j) != 0]
            spec = revsetlang.formatspec(b'%ld', subset)
            tr = repo.transaction(b'rebase')
            tr._report = lambda x: 0  # hide "transaction abort"

            with ui.silent():
                try:
                    rebase.rebase(ui, repo, dest=dest, rev=[spec])
                except error.Abort as ex:
                    summary = b'ABORT: %s' % ex.message
                except Exception as ex:
                    summary = b'CRASH: %s' % ex
                else:
                    # short summary about new nodes
                    cl = repo.changelog
                    descs = []
                    for rev in range(repolen, len(repo)):
                        desc = b'%s:' % getdesc(rev)
                        for prev in cl.parentrevs(rev):
                            if prev > -1:
                                desc += getdesc(prev)
                        descs.append(desc)
                    descs.sort()
                    summary = b' '.join(descs)
            repo.vfs.tryunlink(b'rebasestate')

            subsetdesc = b''.join(getdesc(rev) for rev in subset)
            ui.write(b'%s: %s\n' % (subsetdesc.rjust(len(srevs)), summary))
            tr.abort()