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genlib/record/connect: add match_by_position

This commit is contained in:
Sebastien Bourdeauducq 2013-04-10 21:33:45 +02:00
parent 692794a21f
commit df1ed32765
1 changed files with 11 additions and 5 deletions
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16
migen/genlib/record.py
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@ -96,7 +96,11 @@ class Record:
def raw_bits(self):
return Cat(*self.flatten())
def connect(self, *slaves):
def connect(self, *slaves, match_by_position=False):
if match_by_position:
iters = [iter(slave.layout) for slave in slaves]
else:
iters = [iter(self.layout) for slave in slaves]
r = []
for f in self.layout:
field = f[0]
@ -104,14 +108,16 @@ class Record:
if isinstance(self_e, Signal):
direction = f[2]
if direction == DIR_M_TO_S:
r += [getattr(slave, field).eq(self_e) for slave in slaves]
r += [getattr(slave, next(it)[0]).eq(self_e) for slave, it in zip(slaves, iters)]
elif direction == DIR_S_TO_M:
r.append(self_e.eq(optree("|", [getattr(slave, field) for slave in slaves])))
r.append(self_e.eq(optree("|", [getattr(slave, next(it)[0])
for slave, it in zip(slaves, iters)])))
else:
raise TypeError
else:
for slave in slaves:
r += self_e.connect(getattr(slave, field))
for slave, it in zip(slaves, iters):
r += self_e.connect(getattr(slave, next(it)[0]),
match_by_position=match_by_position)
return r
def __len__(self):