uio: remove Trampoline (Python 3.3 provides generator delegation instead)

migen/uio/ioo.py

@@ -5,7 +5,6 @@ from migen.flow.transactions import *
 from migen.actorlib.sim import TokenExchanger
 from migen.bus import wishbone, memory
 from migen.bus.transactions import *
-from migen.uio.trampoline import Trampoline
 
 class UnifiedIOObject(Module):
 	def __init__(self, dataflow=None, buses={}):
@@ -20,7 +19,7 @@ class UnifiedIOObject(Module):
 
 class UnifiedIOSimulation(UnifiedIOObject):
 	def __init__(self, generator, dataflow=None, buses={}):
-		self.generator = Trampoline(generator)
+		self.generator = generator
 		UnifiedIOObject.__init__(self, dataflow, buses)
 		
 		callers = []

migen/uio/trampoline.py

@@ -1,23 +0,0 @@
-import types
-
-class Trampoline:
-	def __init__(self, g):
-		self.stack = [g]
-	
-	def __iter__(self):
-		return self
-	
-	def __next__(self):
-		while True:
-			while True:
-				try:
-					r = next(self.stack[-1])
-					break
-				except StopIteration:
-					self.stack.pop()
-					if not self.stack:
-						raise
-			if isinstance(r, types.GeneratorType):
-				self.stack.append(r)
-			else:
-				return r