polars_compute/gather/
binary.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 arrow::array::{Array, BinaryArray, PrimitiveArray};
19use arrow::offset::Offset;
20
21use super::generic_binary::*;
22use super::Index;
23
24/// `take` implementation for utf8 arrays
25/// # Safety
26/// The indices must be in-bounds.
27pub unsafe fn take_unchecked<O: Offset, I: Index>(
28    values: &BinaryArray<O>,
29    indices: &PrimitiveArray<I>,
30) -> BinaryArray<O> {
31    let dtype = values.dtype().clone();
32    let indices_has_validity = indices.null_count() > 0;
33    let values_has_validity = values.null_count() > 0;
34
35    let (offsets, values, validity) = match (values_has_validity, indices_has_validity) {
36        (false, false) => {
37            take_no_validity_unchecked::<O, I>(values.offsets(), values.values(), indices.values())
38        },
39        (true, false) => take_values_validity(values, indices.values()),
40        (false, true) => take_indices_validity(values.offsets(), values.values(), indices),
41        (true, true) => take_values_indices_validity(values, indices),
42    };
43    BinaryArray::<O>::new_unchecked(dtype, offsets, values, validity)
44}
polars_compute/gather/binary.rs

polars_compute/gather/
binary.rs
