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  • Committer: Robert Collins
  • Date: 2007-10-22 20:05:12 UTC
  • mto: This revision was merged to the branch mainline in revision 2926.
  • Revision ID: robertc@robertcollins.net-20071022200512-ev362dzjjoj9v7r1
Documentation to aid our failing memory in the future.

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bzrlib/dirstate.py
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            self._sha1_file = self._sha1_file_and_mutter
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        else:
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            self._sha1_file = osutils.sha_file_by_name
 
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        # These two attributes provide a simple cache for lookups into the
 
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        # dirstate in-memory vectors. By probing respectively for the last
 
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        # block, and for the next entry, we save nearly 2 bisections per path
 
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        # during commit.
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        self._last_block_index = None
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        self._last_entry_index = None
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        present = (block_index < len(self._dirblocks) and
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            self._dirblocks[block_index][0] == key[0])
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        self._last_block_index = block_index
 
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        # Reset the entry index cache to the beginning of the block.
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        self._last_entry_index = -1
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        return block_index, present
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