arrow_data/transform/
fixed_size_list.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use crate::ArrayData;
19use arrow_schema::{ArrowError, DataType};
20
21use super::{_MutableArrayData, Extend};
22
23pub(super) fn build_extend(array: &ArrayData) -> Extend<'_> {
24    let size = match array.data_type() {
25        DataType::FixedSizeList(_, i) => *i as usize,
26        _ => unreachable!(),
27    };
28    let offset = array.offset();
29
30    Box::new(
31        move |mutable: &mut _MutableArrayData, index: usize, start: usize, len: usize| {
32            let start = start.checked_add(offset).ok_or_else(|| {
33                ArrowError::InvalidArgumentError(format!(
34                    "fixed size list offset {offset} with start {start} overflows usize"
35                ))
36            })?;
37            let end = start.checked_add(len).ok_or_else(|| {
38                ArrowError::InvalidArgumentError(format!(
39                    "fixed size list start {start} with length {len} overflows usize"
40                ))
41            })?;
42            let (child_start, child_end) = start
43                .checked_mul(size)
44                .zip(end.checked_mul(size))
45                .ok_or_else(|| {
46                    ArrowError::InvalidArgumentError(format!(
47                        "fixed size list range {start}..{end} with size {size} overflows usize"
48                    ))
49                })?;
50            for child in &mut mutable.child_data {
51                child.try_extend(index, child_start, child_end)?;
52            }
53            Ok(())
54        },
55    )
56}
57
58pub(super) fn extend_nulls(mutable: &mut _MutableArrayData, len: usize) -> Result<(), ArrowError> {
59    let size = match mutable.data_type {
60        DataType::FixedSizeList(_, i) => i as usize,
61        _ => unreachable!(),
62    };
63
64    for child in &mut mutable.child_data {
65        child.try_extend_nulls(len * size)?;
66    }
67    Ok(())
68}
arrow_data/transform/fixed_size_list.rs

arrow_data/transform/
fixed_size_list.rs
