andishgar commented on code in PR #46229:
URL: https://github.com/apache/arrow/pull/46229#discussion_r2208316896
##########
cpp/src/arrow/array/array_binary.cc:
##########
@@ -105,6 +111,392 @@
BinaryViewArray::BinaryViewArray(std::shared_ptr<DataType> type, int64_t length,
ArrayData::Make(std::move(type), length, std::move(buffers), null_count,
offset));
}
+namespace {
+
+// TODO Should We move this to bitmap_ops.h and Remove from
compute/kernels/util.s
+Result<std::shared_ptr<Buffer>> GetOrCopyNullBitmapBuffer(const ArrayData&
in_array,
+ MemoryPool* pool) {
+ if (in_array.buffers[0]->data() == nullptr) {
+ return nullptr;
+ } else if (in_array.offset == 0) {
+ return in_array.buffers[0];
+ } else if (in_array.offset % 8 == 0) {
+ return SliceBuffer(in_array.buffers[0], /*offset=*/in_array.offset / 8);
+ } else {
+ // If a non-zero offset, we need to shift the bitmap
+ return internal::CopyBitmap(pool, in_array.buffers[0]->data(),
in_array.offset,
+ in_array.length);
+ }
+}
+
+struct Interval {
+ int64_t start;
+ int64_t end;
+ int32_t offset = -1;
Review Comment:
I've already tried using std::map, but the syntax became quite weird. It
ended up looking something like this:
```c++
it->second.end;
it->second.offset;
```
And if you look at the `CopyDataBuffer` method, you'll see that this kind of
syntax makes the function completely unreadable.
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