D3005: scmutil: introduce deprecated alias for revpair()

[martinvonz (Martin von Zweigbergk)]

martinvonz created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REVISION SUMMARY
  revsingle() returns a context object, revpair() returns nodeids,
  revrange() returns integer revisions (in a revset). I'm going to
  reduce this inconsistency by making revpair() return context
  objects. Changing the return type is not nice to extensions, so this
  patch introduces a nodeid-returning version of revpair() that they can
  detect and use. Update callers to the new function so we can change
  revpair() itself and then migrate them back one by one.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3005

AFFECTED FILES
  hgext/extdiff.py
  mercurial/commands.py
  mercurial/fileset.py
  mercurial/scmutil.py
  tests/autodiff.py

CHANGE DETAILS

diff --git a/tests/autodiff.py b/tests/autodiff.py
--- a/tests/autodiff.py
+++ b/tests/autodiff.py
@@ -40,7 +40,7 @@
     else:
         raise error.Abort(b'--git must be yes, no or auto')
 
-    node1, node2 = scmutil.revpair(repo, [])
+    node1, node2 = scmutil.revpairnodes(repo, [])
     m = scmutil.match(repo[node2], pats, opts)
     it = patch.diff(repo, node1, node2, match=m, opts=diffopts,
                     losedatafn=losedatafn)
diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -446,6 +446,9 @@
     tree = revsetlang.parse(revspec)
     return tree and tree[0] in ('range', 'rangepre', 'rangepost', 'rangeall')
 
+def revpairnodes(repo, revs):
+    return revpair(repo, revs)
+
 def revpair(repo, revs):
     if not revs:
         return repo.dirstate.p1(), None
diff --git a/mercurial/fileset.py b/mercurial/fileset.py
--- a/mercurial/fileset.py
+++ b/mercurial/fileset.py
@@ -513,7 +513,7 @@
     revspec = getstring(r, reverr)
     if not revspec:
         raise error.ParseError(reverr)
-    basenode, node = scmutil.revpair(repo, [baserevspec, revspec])
+    basenode, node = scmutil.revpairnodes(repo, [baserevspec, revspec])
     basectx = repo[basenode]
     ctx = repo[node]
     return getset(mctx.switch(ctx, _buildstatus(ctx, x, basectx=basectx)), x)
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1878,7 +1878,7 @@
         node1 = repo[node2].p1().node()
     else:
         repo = scmutil.unhidehashlikerevs(repo, revs, 'nowarn')
-        node1, node2 = scmutil.revpair(repo, revs)
+        node1, node2 = scmutil.revpairnodes(repo, revs)
 
     if reverse:
         node1, node2 = node2, node1
@@ -4880,7 +4880,7 @@
         node1 = repo[node2].p1().node()
     else:
         repo = scmutil.unhidehashlikerevs(repo, revs, 'nowarn')
-        node1, node2 = scmutil.revpair(repo, revs)
+        node1, node2 = scmutil.revpairnodes(repo, revs)
 
     if pats or ui.configbool('commands', 'status.relative'):
         cwd = repo.getcwd()
diff --git a/hgext/extdiff.py b/hgext/extdiff.py
--- a/hgext/extdiff.py
+++ b/hgext/extdiff.py
@@ -171,7 +171,7 @@
         node2 = scmutil.revsingle(repo, change, None).node()
         node1a, node1b = repo.changelog.parents(node2)
     else:
-        node1a, node2 = scmutil.revpair(repo, revs)
+        node1a, node2 = scmutil.revpairnodes(repo, revs)
         if not revs:
             node1b = repo.dirstate.p2()
         else:



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