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vortex_sequence/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_array::ArrayRef;
7use vortex_array::arrays::SliceReduce;
8use vortex_error::VortexResult;
9
10use crate::SequenceArray;
11use crate::SequenceVTable;
12
13impl SliceReduce for SequenceVTable {
14    fn slice(array: &Self::Array, range: Range<usize>) -> VortexResult<Option<ArrayRef>> {
15        // SAFETY: this is a slice of an already-validated `SequenceArray`, so this is still valid.
16        Ok(Some(
17            unsafe {
18                SequenceArray::new_unchecked(
19                    array.index_value(range.start),
20                    array.multiplier(),
21                    array.ptype(),
22                    array.dtype().nullability(),
23                    range.len(),
24                )
25            }
26            .to_array(),
27        ))
28    }
29}