# HG changeset patch
# User Durham Goode <durham@fb.com>
# Date 1397085433 25200
# Node ID d6296f901fc71f32e30754336aae18b2cc6fac6b
# Parent  61d4fb78370bc72160966fb4dc0685b5b90ae5e9
push: update push logic to match mercurial upstream

Commit e10000369b47 in upstream Mercurial changed the checkpush function
signature. So we need to update hgsubversion accordingly.

Ran the tests against the tip of the hg repo, against a version of hg from
January before the exchange module, and against a version of hg after
pushoperations was added but before checkpush used it, and the tests passed in
all cases.

diff --git a/hgsubversion/wrappers.py b/hgsubversion/wrappers.py
--- a/hgsubversion/wrappers.py
+++ b/hgsubversion/wrappers.py
@@ -180,7 +180,14 @@ def push(repo, dest, force, revs):
     cmdutil.bailifchanged(repo)
     checkpush = getattr(repo, 'checkpush', None)
     if checkpush:
-        checkpush(force, revs)
+        try:
+            # The checkpush function changed as of e10000369b47 in mercurial
+            from mercurial.exchange import pushoperation
+            pushop = pushoperation(repo, dest, force, revs, False)
+            checkpush(pushop)
+        except (ImportError, TypeError):
+            checkpush(force, revs)
+
     ui = repo.ui
     old_encoding = util.swap_out_encoding()