GH-34315: [C++] Correct is_null kernel for Union and RunEndEncoded logical nulls#37642

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felipecrv:union_is_null

Commits on Sep 9, 2023

GH-34315: [C++] Correct is_null kernel for Union and RunEndEncoded logical nulls

jorisvandenbossche
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felipecrv
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lint

jorisvandenbossche
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felipecrv
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move functions to scalar_validity.cc

jorisvandenbossche
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felipecrv
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address feedback (early return, use SetBitsTo)

jorisvandenbossche
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felipecrv
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add basic c++ tests + fix impl for sliced arrays

jorisvandenbossche
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felipecrv
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support REE in FillFromScalar

jorisvandenbossche
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felipecrv
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address feedback

jorisvandenbossche
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felipecrv
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Update cpp/src/arrow/compute/kernels/scalar_validity.cc

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felipecrv
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Update cpp/src/arrow/compute/kernels/scalar_validity.cc

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felipecrv
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fix creating run end from scratch space

jorisvandenbossche
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felipecrv
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address feedback

jorisvandenbossche
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felipecrv
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set members directly

jorisvandenbossche
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felipecrv
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fixup! support REE in FillFromScalar
felipecrv
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Clarify comment and add a DCHECK that guarantees if-else chain is exhaustive
felipecrv
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