REF: _as_reso->_as_creso (#49098)

Author: jbrockmendel

pandas/_libs/index.pyx

@@ -506,8 +506,8 @@ cdef class DatetimeEngine(Int64Engine):
                 return scalar.value
             else:
                 # Note: caller is responsible for catching potential ValueError
-                #  from _as_reso
-                return (<_Timestamp>scalar)._as_reso(self.reso, round_ok=False).value
+                #  from _as_creso
+                return (<_Timestamp>scalar)._as_creso(self.reso, round_ok=False).value
         raise TypeError(scalar)
 
     def __contains__(self, val: object) -> bool:
@@ -574,8 +574,8 @@ cdef class TimedeltaEngine(DatetimeEngine):
                 return scalar.value
             else:
                 # Note: caller is responsible for catching potential ValueError
-                #  from _as_reso
-                return (<_Timedelta>scalar)._as_reso(self.reso, round_ok=False).value
+                #  from _as_creso
+                return (<_Timedelta>scalar)._as_creso(self.reso, round_ok=False).value
         raise TypeError(scalar)
 
 

pandas/_libs/tslibs/offsets.pyx

@@ -1325,7 +1325,7 @@ cdef class RelativeDeltaOffset(BaseOffset):
             weeks = kwds.get("weeks", 0) * self.n
             if weeks:
                 delta = Timedelta(days=7 * weeks)
-                td = (<_Timedelta>delta)._as_reso(reso)
+                td = (<_Timedelta>delta)._as_creso(reso)
                 dt64other = dt64other + td
 
             timedelta_kwds = {
@@ -1335,7 +1335,7 @@ cdef class RelativeDeltaOffset(BaseOffset):
             }
             if timedelta_kwds:
                 delta = Timedelta(**timedelta_kwds)
-                td = (<_Timedelta>delta)._as_reso(reso)
+                td = (<_Timedelta>delta)._as_creso(reso)
                 dt64other = dt64other + (self.n * td)
             return dt64other
         elif not self._use_relativedelta and hasattr(self, "_offset"):
@@ -1346,7 +1346,7 @@ cdef class RelativeDeltaOffset(BaseOffset):
                 delta = Timedelta((self._offset + rem_nano) * self.n)
             else:
                 delta = Timedelta(self._offset * self.n)
-            td = (<_Timedelta>delta)._as_reso(reso)
+            td = (<_Timedelta>delta)._as_creso(reso)
             return dt64other + td
         else:
             # relativedelta with other keywords
@@ -3394,7 +3394,7 @@ cdef class FY5253Quarter(FY5253Mixin):
             for qlen in qtr_lens:
                 if qlen * 7 <= tdelta.days:
                     num_qtrs += 1
-                    tdelta -= (<_Timedelta>Timedelta(days=qlen * 7))._as_reso(norm._reso)
+                    tdelta -= (<_Timedelta>Timedelta(days=qlen * 7))._as_creso(norm._reso)
                 else:
                     break
         else:

pandas/_libs/tslibs/timedeltas.pxd

@@ -24,5 +24,5 @@ cdef class _Timedelta(timedelta):
     cdef bint _has_ns(self)
     cdef _ensure_components(_Timedelta self)
     cdef inline bint _compare_mismatched_resos(self, _Timedelta other, op)
-    cdef _Timedelta _as_reso(self, NPY_DATETIMEUNIT reso, bint round_ok=*)
+    cdef _Timedelta _as_creso(self, NPY_DATETIMEUNIT reso, bint round_ok=*)
     cpdef _maybe_cast_to_matching_resos(self, _Timedelta other)

pandas/_libs/tslibs/timedeltas.pyx

@@ -793,9 +793,9 @@ def _binary_op_method_timedeltalike(op, name):
         # Matching numpy, we cast to the higher resolution. Unlike numpy,
         #  we raise instead of silently overflowing during this casting.
         if self._reso < other._reso:
-            self = (<_Timedelta>self)._as_reso(other._reso, round_ok=True)
+            self = (<_Timedelta>self)._as_creso(other._reso, round_ok=True)
         elif self._reso > other._reso:
-            other = (<_Timedelta>other)._as_reso(self._reso, round_ok=True)
+            other = (<_Timedelta>other)._as_creso(self._reso, round_ok=True)
 
         res = op(self.value, other.value)
         if res == NPY_NAT:
@@ -1541,10 +1541,10 @@ cdef class _Timedelta(timedelta):
     def _as_unit(self, str unit, bint round_ok=True):
         dtype = np.dtype(f"m8[{unit}]")
         reso = get_unit_from_dtype(dtype)
-        return self._as_reso(reso, round_ok=round_ok)
+        return self._as_creso(reso, round_ok=round_ok)
 
     @cython.cdivision(False)
-    cdef _Timedelta _as_reso(self, NPY_DATETIMEUNIT reso, bint round_ok=True):
+    cdef _Timedelta _as_creso(self, NPY_DATETIMEUNIT reso, bint round_ok=True):
         cdef:
             int64_t value
 
@@ -1566,9 +1566,9 @@ cdef class _Timedelta(timedelta):
         If _resos do not match, cast to the higher resolution, raising on overflow.
         """
         if self._reso > other._reso:
-            other = other._as_reso(self._reso)
+            other = other._as_creso(self._reso)
         elif self._reso < other._reso:
-            self = self._as_reso(other._reso)
+            self = self._as_creso(other._reso)
         return self, other
 
 

pandas/_libs/tslibs/timestamps.pxd

@@ -37,4 +37,4 @@ cdef class _Timestamp(ABCTimestamp):
     cpdef void _set_freq(self, freq)
     cdef _warn_on_field_deprecation(_Timestamp self, freq, str field)
     cdef bint _compare_mismatched_resos(_Timestamp self, _Timestamp other, int op)
-    cdef _Timestamp _as_reso(_Timestamp self, NPY_DATETIMEUNIT reso, bint round_ok=*)
+    cdef _Timestamp _as_creso(_Timestamp self, NPY_DATETIMEUNIT reso, bint round_ok=*)

pandas/_libs/tslibs/timestamps.pyx

@@ -436,9 +436,9 @@ cdef class _Timestamp(ABCTimestamp):
             # Matching numpy, we cast to the higher resolution. Unlike numpy,
             #  we raise instead of silently overflowing during this casting.
             if self._reso < other._reso:
-                self = (<_Timestamp>self)._as_reso(other._reso, round_ok=True)
+                self = (<_Timestamp>self)._as_creso(other._reso, round_ok=True)
             elif self._reso > other._reso:
-                other = (<_Timedelta>other)._as_reso(self._reso, round_ok=True)
+                other = (<_Timedelta>other)._as_creso(self._reso, round_ok=True)
 
             nanos = other.value
 
@@ -525,9 +525,9 @@ cdef class _Timestamp(ABCTimestamp):
             # Matching numpy, we cast to the higher resolution. Unlike numpy,
             #  we raise instead of silently overflowing during this casting.
             if self._reso < other._reso:
-                self = (<_Timestamp>self)._as_reso(other._reso, round_ok=False)
+                self = (<_Timestamp>self)._as_creso(other._reso, round_ok=False)
             elif self._reso > other._reso:
-                other = (<_Timestamp>other)._as_reso(self._reso, round_ok=False)
+                other = (<_Timestamp>other)._as_creso(self._reso, round_ok=False)
 
             # scalar Timestamp/datetime - Timestamp/datetime -> yields a
             # Timedelta
@@ -1062,7 +1062,7 @@ cdef class _Timestamp(ABCTimestamp):
     # Conversion Methods
 
     @cython.cdivision(False)
-    cdef _Timestamp _as_reso(self, NPY_DATETIMEUNIT reso, bint round_ok=True):
+    cdef _Timestamp _as_creso(self, NPY_DATETIMEUNIT reso, bint round_ok=True):
         cdef:
             int64_t value
 
@@ -1076,7 +1076,7 @@ cdef class _Timestamp(ABCTimestamp):
         dtype = np.dtype(f"M8[{unit}]")
         reso = get_unit_from_dtype(dtype)
         try:
-            return self._as_reso(reso, round_ok=round_ok)
+            return self._as_creso(reso, round_ok=round_ok)
         except OverflowError as err:
             raise OutOfBoundsDatetime(
                 f"Cannot cast {self} to unit='{unit}' without overflow."