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vortex_fastlanes/for/vtable/
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::IntoArray;
8use vortex_array::arrays::SliceReduce;
9use vortex_error::VortexResult;
10
11use crate::FoRArray;
12use crate::FoRVTable;
13
14impl SliceReduce for FoRVTable {
15    fn slice(array: &Self::Array, range: Range<usize>) -> VortexResult<Option<ArrayRef>> {
16        // SAFETY: Just slicing encoded data does not affect FOR.
17        Ok(Some(unsafe {
18            FoRArray::new_unchecked(
19                array.encoded().slice(range)?,
20                array.reference_scalar().clone(),
21            )
22            .into_array()
23        }))
24    }
25}