def _declr(self):
""""
Parse template and decorate with interfaces
"""
t = self._structT
s_t = _get_only_stream(t)
if s_t is None:
self.sub_t = [_t for _, _t in separate_streams(t)]
if len(self.sub_t) == 1:
# we process all the fields in this component
self.parseTemplate()
# else each child will parse it's own part
# and we join output frames together
else:
# only instantiate a component which aligns the stream
# to correct output format
self.sub_t = [
s_t,
]
addClkRstn(self)
with self._paramsShared():
self.dataOut = self.intfCls()._m()
if isinstance(self._structT, HStruct):
intfCls = StructIntf
elif isinstance(self._structT, HUnion):
intfCls = UnionSink
else:
raise TypeError(self._structT)
self.dataIn = intfCls(self._structT, tuple(), self._mkFieldIntf)
def test_separate_streams_simple(self):
t = HStruct(
(HStream(Bits(8)), "data"),
(Bits(32), "footer"),
)
sep = list(separate_streams(t))
self.assertSequenceEqual(sep,
[(True, HStruct(
(HStream(Bits(8)), "data"), )),
(False, HStruct((Bits(32), "footer"), ))])
def test_separate_streams_no_fotter2(self):
t = HStruct((Bits(8), "data"), )
sep = list(separate_streams(t))
self.assertSequenceEqual(sep, [
(False, t),
])