Function build_extend

arrow-data/src/transform/variable_size.rs:42–60

(
    array: &ArrayData,
)

}

pub(super) fn build_extend<T: ArrowNativeType + Integer + CheckedAdd + AsPrimitive<usize>>(
    array: &ArrayData,
) -> Extend<'_> {
    let offsets = array.buffer::<T>(0);
    let values = array.buffers()[1].as_slice();
    Box::new(
        move |mutable: &mut _MutableArrayData, _, start: usize, len: usize| {
            let offset_buffer = &mut mutable.buffer1;
            let values_buffer = &mut mutable.buffer2;

            // this is safe due to how offset is built. See details on `get_last_offset`
            let last_offset = unsafe { get_last_offset(offset_buffer) };

            extend_offsets::<T>(offset_buffer, last_offset, &offsets[start..start + len + 1]);
            // values
            extend_offset_values::<T>(values_buffer, offsets, values, start, len);
        },
    )
}

pub(super) fn extend_nulls<T: ArrowNativeType>(mutable: &mut _MutableArrayData, len: usize) {
    let offset_buffer = &mut mutable.buffer1;