Rename list_calls to iter_calls and makes it an iterator.

wsme/controller.py

@@ -298,10 +298,7 @@ class WSRoot(object):
                 return res
 
             context = None
-            calls = protocol.list_calls(request)
-
-            if isinstance(calls, CallContext):
-                calls = [calls]
+            calls = list(protocol.iter_calls(request))
 
             if len(calls) != 1:
                 raise NotImplementedError("Batch calls are not yet supported")

wsme/rest.py

@@ -16,8 +16,8 @@ class RestProtocol(object):
             return True
         return request.headers.get('Content-Type') in self.content_types
 
-    def list_calls(self, request):
-        return CallContext(request)
+    def iter_calls(self, request):
+        yield CallContext(request)
 
     def extract_path(self, context):
         path = context.request.path

wsme/tests/test_controller.py

@@ -21,8 +21,8 @@ class DummyProtocol(object):
     def accept(self, req):
         return True
 
-    def list_calls(self, req):
-        return CallContext(req)
+    def iter_calls(self, req):
+        yield CallContext(req)
 
     def extract_path(self, context):
         return ['touch']