vortex-alp 0.70.0

Vortex ALP array
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright the Vortex contributors

use vortex_array::ArrayView;
use vortex_array::ExecutionCtx;
use vortex_array::scalar::Scalar;
use vortex_array::vtable::OperationsVTable;
use vortex_error::VortexExpect;
use vortex_error::VortexResult;

use crate::ALP;
use crate::ALPArrayExt;
use crate::ALPArraySlotsExt;
use crate::ALPFloat;
use crate::match_each_alp_float_ptype;

impl OperationsVTable<ALP> for ALP {
    fn scalar_at(
        array: ArrayView<'_, ALP>,
        index: usize,
        ctx: &mut ExecutionCtx,
    ) -> VortexResult<Scalar> {
        if let Some(patches) = array.patches()
            && let Some(patch) = patches.get_patched(index)?
        {
            return patch.cast(array.dtype());
        }

        let encoded_val = array.encoded().execute_scalar(index, ctx)?;

        Ok(match_each_alp_float_ptype!(array.dtype().as_ptype(), |T| {
            let encoded_val: <T as ALPFloat>::ALPInt =
                (&encoded_val).try_into().vortex_expect("invalid ALPInt");
            Scalar::primitive(
                <T as ALPFloat>::decode_single(encoded_val, array.exponents()),
                array.dtype().nullability(),
            )
        }))
    }
}