930
930
def check_not_reserved_id(version_id):
931
931
revision.check_not_reserved_id(version_id)
933
def clear_cache(self):
934
"""Clear whatever caches this VersionedFile holds.
936
This is generally called after an operation has been performed, when we
937
don't expect to be using this versioned file again soon.
933
940
def _check_lines_not_unicode(self, lines):
934
941
"""Check that lines being added to a versioned file are not unicode."""
935
942
for line in lines:
1483
1490
for struct in outstanding_struct():
1493
def base_from_plan(self):
1494
"""Construct a BASE file from the plan text."""
1496
for state, line in self.plan:
1497
if state in ('killed-a', 'killed-b', 'killed-both', 'unchanged'):
1498
# If unchanged, then this line is straight from base. If a or b
1499
# or both killed the line, then it *used* to be in base.
1500
base_lines.append(line)
1502
if state not in ('killed-base', 'irrelevant',
1503
'ghost-a', 'ghost-b',
1505
'conflicted-a', 'conflicted-b'):
1506
# killed-base, irrelevant means it doesn't apply
1507
# ghost-a/ghost-b are harder to say for sure, but they
1508
# aren't in the 'inc_c' which means they aren't in the
1509
# shared base of a & b. So we don't include them. And
1510
# obviously if the line is newly inserted, it isn't in base
1512
# If 'conflicted-a' or b, then it is new vs one base, but
1513
# old versus another base. However, if we make it present
1514
# in the base, it will be deleted from the target, and it
1515
# seems better to get a line doubled in the merge result,
1516
# rather than have it deleted entirely.
1517
# Example, each node is the 'text' at that point:
1525
# There was a criss-cross conflict merge. Both sides
1526
# include the other, but put themselves first.
1527
# Weave marks this as a 'clean' merge, picking OTHER over
1528
# THIS. (Though the details depend on order inserted into
1530
# LCA generates a plan:
1531
# [('unchanged', M),
1532
# ('conflicted-b', b),
1534
# ('conflicted-a', b),
1536
# If you mark 'conflicted-*' as part of BASE, then a 3-way
1537
# merge tool will cleanly generate "MaN" (as BASE vs THIS
1538
# removes one 'b', and BASE vs OTHER removes the other)
1539
# If you include neither, 3-way creates a clean "MbabN" as
1540
# THIS adds one 'b', and OTHER does too.
1541
# It seems that having the line 2 times is better than
1542
# having it omitted. (Easier to manually delete than notice
1543
# it needs to be added.)
1544
raise AssertionError('Unknown state: %s' % (state,))
1487
1548
class WeaveMerge(PlanWeaveMerge):
1488
1549
"""Weave merge that takes a VersionedFile and two versions as its input."""
added
removed
bzrlib/versionedfile.py
