sim: proxy

diff --git a/migen/sim/generic.py b/migen/sim/generic.py
index 5eb3670e47ee880079d38024223ce7db0573717b..12e40ed2b9b635967425d0f7d63e18c584531554 100644 (file)
--- a/migen/sim/generic.py
+++ b/migen/sim/generic.py
@@ -138,3 +138,20 @@ class Simulator:
                        value += 2**nbits
                assert(value >= 0 and value < 2**nbits)
                self.ipc.send(MessageWrite(name, Int32(index), value))
+
+class Proxy:
+       def __init__(self, sim, obj):
+               self.__dict__["_sim"] = sim
+               self.__dict__["_obj"] = obj
+       
+       def __getattr__(self, name):
+               item = getattr(self._obj, name)
+               if isinstance(item, Signal):
+                       return self._sim.rd(item)
+               else:
+                       return Proxy(self._sim, item)
+
+       def __setattr__(self, name, value):
+               item = getattr(self._obj, name)
+               assert(isinstance(item, Signal))
+               self._sim.wr(item, value)