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  • Committer: Jelmer Vernooij
  • Date: 2012-01-24 13:14:06 UTC
  • mto: (6445.4.5 nested-trees-spec)
  • mto: This revision was merged to the branch mainline in revision 6518.
  • Revision ID: jelmer@samba.org-20120124131406-wedftkorbpv37bm0
Import nested tree doc from devnotes.

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bzrlib/memorytree.py
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See MemoryTree for more details.
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"""
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from __future__ import absolute_import
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import os
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    revision as _mod_revision,
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    )
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from bzrlib.decorators import needs_read_lock
 
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from bzrlib.inventory import Inventory
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from bzrlib.osutils import sha_file
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from bzrlib.mutabletree import needs_tree_write_lock
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from bzrlib.transport.memory import MemoryTransport
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class MemoryTree(mutabletree.MutableTree):
 
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class MemoryTree(mutabletree.MutableInventoryTree):
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    """A MemoryTree is a specialisation of MutableTree.
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    It maintains nearly no state outside of read_lock and write_lock
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        self._locks = 0
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        self._lock_mode = None
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    def is_control_filename(self, filename):
 
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        # Memory tree doesn't have any control filenames
 
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        return False
 
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    @needs_tree_write_lock
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    def _add(self, files, ids, kinds):
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        """See MutableTree._add."""
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            self._parent_ids = []
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        else:
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            self._parent_ids = [self._branch_revision_id]
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        self._inventory = self._basis_tree._inventory._get_mutable_inventory()
 
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        self._inventory = Inventory(None, self._basis_tree.get_revision_id())
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        self._file_transport = MemoryTransport()
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        # TODO copy the revision trees content, or do it lazy, or something.
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        inventory_entries = self._inventory.iter_entries()
 
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        inventory_entries = self._basis_tree.iter_entries_by_dir()
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        for path, entry in inventory_entries:
 
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            self._inventory.add(entry.copy())
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            if path == '':
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                continue
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            if entry.kind == 'directory':