litex/examples/basic/namer.py

from migen.fhdl.structure import *
from migen.fhdl import verilog
from migen.genlib.misc import optree

def gen_list(n):
	s = [Signal() for i in range(n)]
	return s

def gen_2list(n):
	s = [Signal(2) for i in range(n)]
	return s

class Foo:
	def __init__(self):
		la = gen_list(3)
		lb = gen_2list(2)
		self.sigs = la + lb

class Bar:
	def __init__(self):
		self.sigs = gen_list(2)
		
class Toto:
	def __init__(self):
		self.sigs = gen_list(2)

a = [Bar() for x in range(3)]
b = [Foo() for x in range(3)]
c = b
b = [Bar() for x in range(2)]

output = Signal()
allsigs = []
for lst in [a, b, c]:
	for obj in lst:
		allsigs.extend(obj.sigs)
comb = [output.eq(optree("|", allsigs))]

f = Fragment(comb)
print(verilog.convert(f))