CLN: remove no-longer-reachable addsub_int_array (#30592)

Author: jbrockmendel

pandas/core/arrays/datetimelike.py

@@ -1093,39 +1093,6 @@ def _sub_period_array(self, other):
  new_values[mask] = NaT
  return new_values
 
- def _addsub_int_array(self, other, op):
- """
- Add or subtract array-like of integers equivalent to applying
- `_time_shift` pointwise.
-
- Parameters
- ----------
- other : Index, ExtensionArray, np.ndarray
- integer-dtype
- op : {operator.add, operator.sub}
-
- Returns
- -------
- result : same class as self
- """
- # _addsub_int_array is overridden by PeriodArray
- assert not is_period_dtype(self)
- assert op in [operator.add, operator.sub]
-
- if self.freq is None:
- # GH#19123
- raise NullFrequencyError("Cannot shift with no freq")
-
- elif isinstance(self.freq, Tick):
- # easy case where we can convert to timedelta64 operation
- td = Timedelta(self.freq)
- return op(self, td * other)
-
- # We should only get here with DatetimeIndex; dispatch
- # to _addsub_offset_array
- assert not is_timedelta64_dtype(self)
- return op(self, np.array(other) * self.freq)
-
  def _addsub_offset_array(self, other, op):
  """
  Add or subtract array-like of DateOffset objects

pandas/core/arrays/period.py

@@ -637,12 +637,23 @@ def _sub_period(self, other):
 
  return new_data
 
- @Appender(dtl.DatetimeLikeArrayMixin._addsub_int_array.__doc__)
  def _addsub_int_array(
- self,
- other: Union[ABCPeriodArray, ABCSeries, ABCPeriodIndex, np.ndarray],
- op: Callable[[Any], Any],
- ) -> ABCPeriodArray:
+ self, other: np.ndarray, op: Callable[[Any], Any],
+ ) -> "PeriodArray":
+ """
+ Add or subtract array of integers; equivalent to applying
+ `_time_shift` pointwise.
+
+ Parameters
+ ----------
+ other : np.ndarray[integer-dtype]
+ op : {operator.add, operator.sub}
+
+ Returns
+ -------
+ result : PeriodArray
+ """
+
  assert op in [operator.add, operator.sub]
  if op is operator.sub:
  other = -other