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  • Committer: Andrew Bennetts
  • Date: 2008-08-07 00:25:38 UTC
  • mfrom: (3612 +trunk)
  • mto: This revision was merged to the branch mainline in revision 3613.
  • Revision ID: andrew.bennetts@canonical.com-20080807002538-mtl1fcgy2fdabha4
Merge from bzr.dev.

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bzrlib/branch.py
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import sys
 
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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        finally:
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            other.unlock()
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    def revision_id_to_revno(self, revision_id):
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        """Given a revision id, return its revno"""
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        if _mod_revision.is_null(revision_id):
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        elif relation == 'a_descends_from_b':
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            return False
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        else:
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            raise AssertionError("invalid heads: %r" % heads)
 
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            raise AssertionError("invalid relation: %r" % (relation,))
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    def _revision_relations(self, revision_a, revision_b, graph):
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        """Determine the relationship between two revisions.
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        elif heads == set([revision_a]):
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            return 'a_descends_from_b'
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        else:
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            raise AssertionError("invalid heads: %r" % heads)
 
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            raise AssertionError("invalid heads: %r" % (heads,))
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class BranchFormat(object):
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    def set_default_format(klass, format):
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        klass._default_format = format
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    def supports_stacking(self):
 
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        """True if this format records a stacked-on branch."""
 
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        return False
 
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    @classmethod
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    def unregister_format(klass, format):
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        del klass._formats[format.get_format_string()]
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        self._matchingbzrdir.repository_format = \
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            RepositoryFormatPackDevelopment1Subtree()
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    def supports_stacking(self):
 
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        return True
 
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class BranchReferenceFormat(BranchFormat):
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    """Bzr branch reference format.
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        check_not_reserved_id = _mod_revision.check_not_reserved_id
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        for rev_id in rev_history:
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            check_not_reserved_id(rev_id)
 
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        if Branch.hooks['post_change_branch_tip']:
 
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            # Don't calculate the last_revision_info() if there are no hooks
 
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            # that will use it.
 
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            old_revno, old_revid = self.last_revision_info()
 
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        if len(rev_history) == 0:
 
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            revid = _mod_revision.NULL_REVISION
 
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        else:
 
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            revid = rev_history[-1]
 
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        self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
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        self._write_revision_history(rev_history)
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        self._clear_cached_state()
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        self._cache_revision_history(rev_history)
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        for hook in Branch.hooks['set_rh']:
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            hook(self, rev_history)
 
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        if Branch.hooks['post_change_branch_tip']:
 
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            self._run_post_change_branch_tip_hooks(old_revno, old_revid)
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    def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
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        """Run the pre_change_branch_tip hooks."""
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        params = ChangeBranchTipParams(
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            self, old_revno, new_revno, old_revid, new_revid)
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        for hook in hooks:
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            hook(params)
 
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            try:
 
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                hook(params)
 
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            except errors.TipChangeRejected:
 
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                raise
 
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            except Exception:
 
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                exc_info = sys.exc_info()
 
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                hook_name = Branch.hooks.get_hook_name(hook)
 
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                raise errors.HookFailed(
 
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                    'pre_change_branch_tip', hook_name, exc_info)
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    def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
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        """Run the post_change_branch_tip hooks."""
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        be permitted.
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        """
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        revision_id = _mod_revision.ensure_null(revision_id)
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        old_revno, old_revid = self.last_revision_info()
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        # this old format stores the full history, but this api doesn't
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        # provide it, so we must generate, and might as well check it's
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        # correct
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        history = self._lefthand_history(revision_id)
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        if len(history) != revno:
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            raise AssertionError('%d != %d' % (len(history), revno))
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        self._run_pre_change_branch_tip_hooks(revno, revision_id)
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        self.set_revision_history(history)
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        self._run_post_change_branch_tip_hooks(old_revno, old_revid)
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    def _gen_revision_history(self):
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        history = self._transport.get_bytes('revision-history').split('\n')