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vortex_array/arrays/list/compute/
slice.rs

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4use std::ops::Range;
5
6use vortex_error::VortexResult;
7
8use crate::ArrayRef;
9use crate::IntoArray;
10use crate::array::ArrayView;
11use crate::arrays::List;
12use crate::arrays::ListArray;
13use crate::arrays::list::ListArraySlotsExt;
14use crate::arrays::slice::SliceReduce;
15
16impl SliceReduce for List {
17    fn slice(array: ArrayView<'_, Self>, range: Range<usize>) -> VortexResult<Option<ArrayRef>> {
18        Ok(Some(
19            unsafe {
20                ListArray::new_unchecked(
21                    array.elements().clone(),
22                    array.offsets().slice(range.start..range.end + 1)?,
23                    array.validity()?.slice(range)?,
24                )
25            }
26            .into_array(),
27        ))
28    }
29}