Eduardo Ponce created ARROW-14058:
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Summary: [Python] Update use of FunctionOptions scoped enums once
Cython 3 is supported
Key: ARROW-14058
URL: https://issues.apache.org/jira/browse/ARROW-14058
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Reporter: Eduardo Ponce
In
[_pyarrow/_compute.pyx_|https://github.com/apache/arrow/blob/master/python/pyarrow/_compute.pyx]
there are several scoped enums for FunctionOptions (e.g., RoundMode and
SortOrder) which are not used in dictionaries but rather with a chain of
if-elses because scoped enums are not fully supported in Cython >= 0.29.x since
they do not resolve to an underlying integral type. We would like to be
consistent with the use of other FunctionOptions and use a dictionary when
mapping string input to enum constant.
In order for the above to work in Cython 3, we also need to update the
definition of the scoped enums found in [_pyarrow/includes/libarrow.pxd_|] to
the form of
{code:c++}
cpdef enum class CRoundMode(int8_t)
{code}
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