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  • Committer: Aaron Bentley
  • Date: 2007-05-26 04:27:39 UTC
  • mto: This revision was merged to the branch mainline in revision 2534.
  • Revision ID: aaron.bentley@utoronto.ca-20070526042739-0o2yva7r05fslgqm
Use GraphWalker.unique_ancestor to determine merge base

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bzrlib/merge.py
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from bzrlib.merge3 import Merge3
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from bzrlib.osutils import rename, pathjoin
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from progress import DummyProgress, ProgressPhase
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from bzrlib.revision import common_ancestor, is_ancestor, NULL_REVISION
 
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from bzrlib.revision import (common_ancestor, is_ancestor, NULL_REVISION,
 
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                             ensure_null)
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from bzrlib.textfile import check_text_lines
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from bzrlib.trace import mutter, warning, note
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from bzrlib.transform import (TreeTransform, resolve_conflicts, cook_conflicts,
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                pb = ui.ui_factory.nested_progress_bar()
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                try:
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                    this_repo = self.this_branch.repository
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                    self.base_rev_id = common_ancestor(self.this_basis, 
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                                                       self.other_basis, 
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                                                       this_repo, pb)
 
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                    walker = this_repo.get_graph_walker()
 
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                    revisions = [ensure_null(self.this_basis),
 
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                                 ensure_null(self.other_basis)]
 
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                    if NULL_REVISION in revisions:
 
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                        self.base_rev_id = NULL_REVISION
 
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                    else:
 
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                        self.base_rev_id = walker.unique_common(*revisions)
 
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                        if self.base_rev_id == NULL_REVISION:
 
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                            raise UnrelatedBranches()
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                finally:
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                    pb.finished()
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            except NoCommonAncestor: