# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1675091992 -14400
# Node ID fcbca44dd0df2d0d5dddc3792d18020bb2c3c4ac
# Parent  28355b173fd5cd08cd118f11a3facb6268f1bfdb
compat: implement changing_parents context manager

It combines the compatibility layer for the recently renamed changing_parents
(was parentchange) on dirstate class with _quick_access_* handling code into
one context manager, which should be slightly more pleasant to use.

diff -r 28355b173fd5 -r fcbca44dd0df hgext3rd/evolve/cmdrewrite.py
--- a/hgext3rd/evolve/cmdrewrite.py	Fri Jan 27 18:43:11 2023 +0400
+++ b/hgext3rd/evolve/cmdrewrite.py	Mon Jan 30 19:19:52 2023 +0400
@@ -473,7 +473,7 @@
         if opts.get('revert'):
             compat.clean_update(repo[newid])
         else:
-            with repo.dirstate.parentchange(), compat.parentchange(repo):
+            with compat.changing_parents(repo):
                 compat.movedirstate(repo, repo[newid], match)
         if not repo[newid].files():
             ui.warn(_(b"new changeset is empty\n"))
@@ -1329,7 +1329,7 @@
         tr = repo.currenttransaction()
         phases.retractboundary(repo, tr, ctx.phase(), [new])
         if ctx in repo[None].parents():
-            with repo.dirstate.parentchange(), compat.parentchange(repo):
+            with compat.changing_parents(repo):
                 repo.dirstate.setparents(new, node.nullid)
 
 @eh.command(
diff -r 28355b173fd5 -r fcbca44dd0df hgext3rd/evolve/compat.py
--- a/hgext3rd/evolve/compat.py	Fri Jan 27 18:43:11 2023 +0400
+++ b/hgext3rd/evolve/compat.py	Mon Jan 30 19:19:52 2023 +0400
@@ -337,9 +337,15 @@
     return cl.nodemap.get
 
 @contextlib.contextmanager
-def parentchange(repo):
+def changing_parents(repo):
+    if util.safehasattr(repo.dirstate, 'changing_parents'):
+        changing_parents = repo.dirstate.changing_parents(repo)
+    else:
+        # hg <= 6.3 (7a8bfc05b691)
+        changing_parents = repo.dirstate.parentchange()
     try:
-        yield
+        with changing_parents:
+            yield
     finally:
         # hg <= 5.2 (85c4cd73996b)
         if util.safehasattr(repo, '_quick_access_changeid_invalidate'):
diff -r 28355b173fd5 -r fcbca44dd0df hgext3rd/evolve/evolvecmd.py
--- a/hgext3rd/evolve/evolvecmd.py	Fri Jan 27 18:43:11 2023 +0400
+++ b/hgext3rd/evolve/evolvecmd.py	Mon Jan 30 19:19:52 2023 +0400
@@ -282,7 +282,7 @@
                                flag=obsolete.bumpedfix, operation=b'evolve')
     bmupdate(newid)
     # reroute the working copy parent to the new changeset
-    with repo.dirstate.parentchange(), compat.parentchange(repo):
+    with compat.changing_parents(repo):
         repo.dirstate.setparents(newid, nodemod.nullid)
     return (True, replacementnode)
 
@@ -615,7 +615,7 @@
         publicdiv = repo[publicnode]
         otherdiv = other if other.mutable() else divergent
 
-        with repo.dirstate.parentchange(), compat.parentchange(repo):
+        with compat.changing_parents(repo):
             compat.movedirstate(repo, repo[publicnode])
         # check if node to be committed has changes same as public one
         s = publicdiv.status()
@@ -628,7 +628,7 @@
             compat.mergestate.clean(repo)
             return (True, publicnode)
 
-    with repo.dirstate.parentchange(), compat.parentchange(repo):
+    with compat.changing_parents(repo):
         compat.movedirstate(repo, repo[resparent])
 
     # merge the branches
@@ -2223,14 +2223,14 @@
             # p1 is obsolete and p2 is not obsolete, current working
             # directory parent should be successor of p1, so we should
             # set dirstate parents to (succ of p1, p2)
-            with repo.dirstate.parentchange(), compat.parentchange(repo):
+            with compat.changing_parents(repo):
                 repo.dirstate.setparents(currentp1,
                                          ctxparents[1].node())
         elif p2obs and not p1obs:
             # p2 is obsolete and p1 is not obsolete, current working
             # directory parent should be successor of p2, so we should
             # set dirstate parents to (succ of p2, p1)
-            with repo.dirstate.parentchange(), compat.parentchange(repo):
+            with compat.changing_parents(repo):
                 repo.dirstate.setparents(ctxparents[0].node(),
                                          currentp1)
 
@@ -2238,12 +2238,12 @@
             # both the parents were obsoleted, if orphanmerge is set, we
             # are processing the second parent first (to keep parent order)
             if evolvestate.get(b'orphanmerge'):
-                with repo.dirstate.parentchange(), compat.parentchange(repo):
+                with compat.changing_parents(repo):
                     repo.dirstate.setparents(ctxparents[0].node(),
                                              currentp1)
             pass
     else:
-        with repo.dirstate.parentchange(), compat.parentchange(repo):
+        with compat.changing_parents(repo):
             repo.dirstate.setparents(repo.dirstate.p1(), nodemod.nullid)
 
     with repo.ui.configoverride(overrides, b'evolve-continue'):