arrow_data/transform/
primitive.rs

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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_buffer::ArrowNativeType;
20use std::mem::size_of;
21use std::ops::Add;
22
23use super::{Extend, _MutableArrayData};
24
25pub(super) fn build_extend<T: ArrowNativeType>(array: &ArrayData) -> Extend {
26    let values = array.buffer::<T>(0);
27    Box::new(
28        move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| {
29            mutable
30                .buffer1
31                .extend_from_slice(&values[start..start + len]);
32        },
33    )
34}
35
36pub(super) fn build_extend_with_offset<T>(array: &ArrayData, offset: T) -> Extend
37where
38    T: ArrowNativeType + Add<Output = T>,
39{
40    let values = array.buffer::<T>(0);
41    Box::new(
42        move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| {
43            mutable
44                .buffer1
45                .extend(values[start..start + len].iter().map(|x| *x + offset));
46        },
47    )
48}
49
50pub(super) fn extend_nulls<T: ArrowNativeType>(mutable: &mut _MutableArrayData, len: usize) {
51    mutable.buffer1.extend_zeros(len * size_of::<T>());
52}
arrow_data/transform/primitive.rs

arrow_data/transform/
primitive.rs
