Mercurial > public > mercurial-scm > hg-stable
diff mercurial/pure/parsers.py @ 48534:2c6084f67a86
changelog-v2: use helper constant in the code to pack/unpack entries
This makes the code simpler to read and modify. This is probably less
efficient, but we are talking about the Python implementation here, so
performance is concerne secondary to readability.
Differential Revision: https://phab.mercurial-scm.org/D11934
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Tue, 14 Dec 2021 19:24:24 +0100 |
| parents | 30741bbea550 |
| children | 52034c42c09d |
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--- a/mercurial/pure/parsers.py Wed Dec 15 15:28:30 2021 +0100 +++ b/mercurial/pure/parsers.py Tue Dec 14 19:24:24 2021 +0100 @@ -880,18 +880,43 @@ def _unpack_entry(self, rev, data, r=True): items = self.index_format.unpack(data) - entry = items[:3] + (rev, rev) + items[3:8] - data_comp = items[8] & 3 - sidedata_comp = (items[8] >> 2) & 3 - return entry + (data_comp, sidedata_comp) + return ( + items[revlog_constants.INDEX_ENTRY_V2_IDX_OFFSET], + items[revlog_constants.INDEX_ENTRY_V2_IDX_COMPRESSED_LENGTH], + items[revlog_constants.INDEX_ENTRY_V2_IDX_UNCOMPRESSED_LENGTH], + rev, + rev, + items[revlog_constants.INDEX_ENTRY_V2_IDX_PARENT_1], + items[revlog_constants.INDEX_ENTRY_V2_IDX_PARENT_2], + items[revlog_constants.INDEX_ENTRY_V2_IDX_NODEID], + items[revlog_constants.INDEX_ENTRY_V2_IDX_SIDEDATA_OFFSET], + items[ + revlog_constants.INDEX_ENTRY_V2_IDX_SIDEDATA_COMPRESSED_LENGTH + ], + items[revlog_constants.INDEX_ENTRY_V2_IDX_COMPRESSION_MODE] & 3, + (items[revlog_constants.INDEX_ENTRY_V2_IDX_COMPRESSION_MODE] >> 2) + & 3, + ) def _pack_entry(self, rev, entry): - assert entry[3] == rev, entry[3] - assert entry[4] == rev, entry[4] - data = entry[:3] + entry[5:10] - data_comp = entry[10] & 3 - sidedata_comp = (entry[11] & 3) << 2 - data += (data_comp | sidedata_comp,) + + base = entry[revlog_constants.ENTRY_DELTA_BASE] + link_rev = entry[revlog_constants.ENTRY_LINK_REV] + assert base == rev, (base, rev) + assert link_rev == rev, (link_rev, rev) + data = ( + entry[revlog_constants.ENTRY_DATA_OFFSET], + entry[revlog_constants.ENTRY_DATA_COMPRESSED_LENGTH], + entry[revlog_constants.ENTRY_DATA_UNCOMPRESSED_LENGTH], + entry[revlog_constants.ENTRY_PARENT_1], + entry[revlog_constants.ENTRY_PARENT_2], + entry[revlog_constants.ENTRY_NODE_ID], + entry[revlog_constants.ENTRY_SIDEDATA_OFFSET], + entry[revlog_constants.ENTRY_SIDEDATA_COMPRESSED_LENGTH], + entry[revlog_constants.ENTRY_DATA_COMPRESSION_MODE] & 3 + | (entry[revlog_constants.ENTRY_SIDEDATA_COMPRESSION_MODE] & 3) + << 2, + ) return self.index_format.pack(*data)