def __setattr__(self, name, value):
""" Implements auto-resize feature, ie resizes all assigns to Sfix registers.
Also implements the register behaviour i.e saves assigned value to shadow variable, that is later used by the '_pyha_update_registers' function.
"""
if hasattr(self, '_pyha_is_initialization') or self._pyha_is_local() or not RegisterBehaviour.is_enabled():
self.__dict__[name] = value
return
if AutoResize.is_enabled():
target = getattr(self._pyha_initial_self, name)
with SimPath(f'{name}='):
value = auto_resize(target, value)
if isinstance(value, list):
# list assign
# example: self.i = [i] + self.i[:-1]
assert isinstance(self.__dict__[name], PyhaList)
if hasattr(self.__dict__[name][0], '_pyha_update_registers'):
# list of submodules -> need to copy each value to submodule next
for elem, new in zip(self.__dict__[name], value):
# for deeper submodules, deepcopy was not necessary..
# copy relevant stuff only
for k, v in new.__dict__.items():
if k.startswith('_pyha'):
continue
elem.__dict__['_pyha_next'][k] = v
else:
self.__dict__[name]._pyha_next = value
return
if isinstance(value, Hardware):
for k, v in value.__dict__.items():
if k.startswith('_pyha'):
continue
n = self.__dict__[name]
setattr(n, k, v)
return
self.__dict__['_pyha_next'][name] = value
def auto_resize(target, value):
if not AutoResize.is_enabled() or not isinstance(target, (Sfix, Complex)) or Sfix._float_mode.enabled:
return value
if target.bits is not None:
right = value.right
try:
left = right + target.bits
if target.signed:
left -= 1 # -1 is to count for the sign bit!
except TypeError: # right was None?
left = None
elif target.upper_bits is not None:
left = value.left
try:
right = left - target.upper_bits
if target.signed:
right += 1 # +1 is to count for the sign bit!
except TypeError: # left was None?
right = None
else:
left = target.left if target.left is not None else value.left
right = target.right if target.right is not None else value.right
return target(value, left, right)