--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rhodecode/lib/vcs/backends/hg/workdir.py	Mon Feb 20 23:00:54 2012 +0200
@@ -0,0 +1,21 @@
+from rhodecode.lib.vcs.backends.base import BaseWorkdir
+from rhodecode.lib.vcs.exceptions import BranchDoesNotExistError
+
+from ...utils.hgcompat import hg_merge
+
+
+class MercurialWorkdir(BaseWorkdir):
+
+    def get_branch(self):
+        return self.repository._repo.dirstate.branch()
+
+    def get_changeset(self):
+        return self.repository.get_changeset()
+
+    def checkout_branch(self, branch=None):
+        if branch is None:
+            branch = self.repository.DEFAULT_BRANCH_NAME
+        if branch not in self.repository.branches:
+            raise BranchDoesNotExistError
+
+        hg_merge.update(self.repository._repo, branch, False, False, None)