diff mercurial/pure/parsers.py @ 47012:d55b71393907

node: replace nullid and friends with nodeconstants class

The introduction of 256bit hashes require changes to nullid and other
constant magic values. Start pushing them down from repository and
revlog where sensible.

Differential Revision: https://phab.mercurial-scm.org/D9465

--- a/mercurial/pure/parsers.py	Mon Apr 19 20:38:52 2021 -0400
+++ b/mercurial/pure/parsers.py	Mon Mar 29 01:52:06 2021 +0200
@@ -10,7 +10,10 @@
 import struct
 import zlib
 
-from ..node import nullid, nullrev
+from ..node import (
+    nullrev,
+    sha1nodeconstants,
+)
 from .. import (
     pycompat,
     util,
@@ -50,7 +53,7 @@
     # Size of a C long int, platform independent
     int_size = struct.calcsize(b'>i')
     # An empty index entry, used as a default value to be overridden, or nullrev
-    null_item = (0, 0, 0, -1, -1, -1, -1, nullid)
+    null_item = (0, 0, 0, -1, -1, -1, -1, sha1nodeconstants.nullid)
 
     @util.propertycache
     def entry_size(self):
@@ -64,7 +67,7 @@
 
     @util.propertycache
     def _nodemap(self):
-        nodemap = nodemaputil.NodeMap({nullid: nullrev})
+        nodemap = nodemaputil.NodeMap({sha1nodeconstants.nullid: nullrev})
         for r in range(0, len(self)):
             n = self[r][7]
             nodemap[n] = r
@@ -246,7 +249,7 @@
 
 class Index2Mixin(object):
     index_format = revlog_constants.INDEX_ENTRY_V2
-    null_item = (0, 0, 0, -1, -1, -1, -1, nullid, 0, 0)
+    null_item = (0, 0, 0, -1, -1, -1, -1, sha1nodeconstants.nullid, 0, 0)
 
     def replace_sidedata_info(self, i, sidedata_offset, sidedata_length):
         """