| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| use std::mem::size_of; |
| use std::ops::Add; |
| |
| use crate::{array::ArrayData, datatypes::ArrowNativeType}; |
| |
| use super::{Extend, _MutableArrayData}; |
| |
| pub(super) fn build_extend<T: ArrowNativeType>(array: &ArrayData) -> Extend { |
| let values = array.buffer::<T>(0); |
| Box::new( |
| move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| { |
| mutable |
| .buffer1 |
| .extend_from_slice(&values[start..start + len]); |
| }, |
| ) |
| } |
| |
| pub(super) fn build_extend_with_offset<T>(array: &ArrayData, offset: T) -> Extend |
| where |
| T: ArrowNativeType + Add<Output = T>, |
| { |
| let values = array.buffer::<T>(0); |
| Box::new( |
| move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| { |
| mutable |
| .buffer1 |
| .extend(values[start..start + len].iter().map(|x| *x + offset)); |
| }, |
| ) |
| } |
| |
| pub(super) fn extend_nulls<T: ArrowNativeType>( |
| mutable: &mut _MutableArrayData, |
| len: usize, |
| ) { |
| mutable.buffer1.extend_zeros(len * size_of::<T>()); |
| } |