// 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 super::{Extend, _MutableArrayData};

use crate::ArrayData;

use arrow_schema::DataType;

pub(super) fn build_extend(array: &ArrayData) -> Extend<'_> {

    let size = match array.data_type() {

        DataType::FixedSizeBinary(i) => *i as usize,

        _ => unreachable!(),

    };

    let values = &array.buffers()[0].as_slice()[array.offset() * size..];

    Box::new(

        move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| {

            let buffer = &mut mutable.buffer1;

            buffer.extend_from_slice(&values[start * size..(start + len) * size]);

        },

    )

}

pub(super) fn extend_nulls(mutable: &mut _MutableArrayData, len: usize) {

    let size = match mutable.data_type {

        DataType::FixedSizeBinary(i) => i as usize,

        _ => unreachable!(),

    };

    let values_buffer = &mut mutable.buffer1;

    values_buffer.extend_zeros(len * size);

}