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restore len(alarm.sleep_memory) and bool(alarm.sleep_memory) #3958

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Jan 11, 2021
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restore len(alarm.sleep_memory) and bool(alarm.sleep_memory) #3958

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20 changes: 20 additions & 0 deletions shared-bindings/alarm/SleepMemory.c
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,25 @@
//| """Not used. Access the sole instance through `alarm.sleep_memory`."""
//| ...
//|
//| def __bool__(self) -> bool:
//| """``sleep_memory`` is ``True`` if its length is greater than zero.
//| This is an easy way to check for its existence.
//| """
//| ...
//|
//| def __len__(self) -> int:
//| """Return the length. This is used by (`len`)"""
//| ...
//|
STATIC mp_obj_t alarm_sleep_memory_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
alarm_sleep_memory_obj_t *self = MP_OBJ_TO_PTR(self_in);
uint16_t len = common_hal_alarm_sleep_memory_get_length(self);
switch (op) {
case MP_UNARY_OP_BOOL: return mp_obj_new_bool(len != 0);
case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(len);
default: return MP_OBJ_NULL; // op not supported
}
}

STATIC const mp_rom_map_elem_t alarm_sleep_memory_locals_dict_table[] = {
};
Expand Down Expand Up @@ -154,6 +173,7 @@ const mp_obj_type_t alarm_sleep_memory_type = {
{ &mp_type_type },
.name = MP_QSTR_SleepMemory,
.subscr = alarm_sleep_memory_subscr,
.unary_op = alarm_sleep_memory_unary_op,
.print = NULL,
.locals_dict = (mp_obj_t)&alarm_sleep_memory_locals_dict,
};