inlined _build_doort_impact

theano/gof/destroyhandler.py

@@ -727,11 +727,6 @@ class DestroyHandler(toolbox.Bookkeeper):
         (see docstrings for these properties above)
         """
         if self.stale_droot:
-            self.droot, self.impact, self.root_destroyer = self._build_droot_impact()
-            self.stale_droot = False
-        return self.droot, self.impact, self.root_destroyer
-
-    def _build_droot_impact(self):
             droot = {}   # destroyed view + nonview variables -> foundation
             impact = {}  # destroyed nonview variable -> it + all views of it
             root_destroyer = {} # root -> destroyer apply
@@ -747,8 +742,6 @@ class DestroyHandler(toolbox.Bookkeeper):
                         raise InconsistencyError("Multiple destroyers of %s" % input_root)
                     droot[input_root] = input_root
                     root_destroyer[input_root] = app
-                #input_impact = set([input_root])
-                #add_impact(input_root, self.view_o, input_impact)
                     input_impact = get_impact(input_root, self.view_o)
                     for v in input_impact:
                         assert v not in droot
@@ -756,8 +749,9 @@ class DestroyHandler(toolbox.Bookkeeper):
 
                     impact[input_root] = input_impact
                     impact[input_root].add(input_root)
-
-        return droot, impact, root_destroyer
+            self.droot, self.impact, self.root_destroyer = droot, impact, root_destroyer
+            self.stale_droot = False
+        return self.droot, self.impact, self.root_destroyer
 
     def on_detach(self, fgraph):
         if fgraph is not self.fgraph: