def __setitem__(self, index, value):
"""
this []= operator can not be called in desing description, it can be only used to update HValues
"""
if not isinstance(self, HValue):
raise TypeError(
"To assign a member of hdl arrray/vector/list/... use a[index](val) instead of a[index] = val"
)
# convert index to hSlice or hInt
if isinstance(index, HValue):
index = index
elif isinstance(index, slice):
length = self._dtype.bit_length()
index = slice_to_SLICE(index, length)
if not index._is_full_valid():
raise ValueError("invalid index", index)
else:
index = hInt(index)
# convert value to bits of length specified by index
if index._dtype == SLICE:
Bits = self._dtype.__class__
itemT = Bits(index._size())
else:
itemT = BIT
if isinstance(value, HValue):
value = value._auto_cast(itemT)
else:
value = itemT.from_py(value)
return Bits3val.__setitem__(self, index, value)
def __setitem__(self, index, value):
"""
this can not be called in desing description on non static values,
only simulator can resolve this (in design use self[index] ** value
instead of self[index] = value)
"""
# convert index to hSlice or hInt
indexConst = True
if not isinstance(index, Value):
if isinstance(index, RtlSignalBase):
if index._const:
index = index.staticEval()
else:
indexConst = False
elif isinstance(index, slice):
length = self._dtype.bit_length()
index = slice_to_SLICE(index, length)
else:
index = hInt(index)
if indexConst and not index._is_full_valid():
indexConst = False
# convert value to bits of length specified by index
if indexConst:
if index._dtype == SLICE:
Bits = self._dtype.__class__
itemT = Bits(index._size())
else:
itemT = BIT
if not isinstance(value, Value):
if isinstance(value, RtlSignalBase):
if value._const:
value = value.staticEval()._auto_cast(itemT)
valueConst = True
else:
valueConst = False
else:
value = itemT.from_py(value)
valueConst = True
else:
valueConst = True
value = value._auto_cast(itemT)
if indexConst and valueConst and isinstance(self, Value):
return Bits3val.__setitem__(self, index, value)
raise TypeError(
"Only simulator can resolve []= for signals or invalid index")