Function array_reverse_inner

datafusion/functions-nested/src/reverse.rs:117–144

array_reverse SQL function

(arg: &[ArrayRef])

/// array_reverse SQL function
pub fn array_reverse_inner(arg: &[ArrayRef]) -> Result<ArrayRef> {
    let [input_array] = take_function_args("array_reverse", arg)?;

    match &input_array.data_type() {
        List(field) => {
            let array = as_list_array(input_array)?;
            general_array_reverse::<i32>(array, field)
        }
        LargeList(field) => {
            let array = as_large_list_array(input_array)?;
            general_array_reverse::<i64>(array, field)
        }
        FixedSizeList(field, _) => {
            let array = as_fixed_size_list_array(input_array)?;
            fixed_size_array_reverse(array, field)
        }
        Null => Ok(Arc::clone(input_array)),
        ListView(field) => {
            let array = as_list_view_array(input_array)?;
            list_view_reverse::<i32>(array, field)
        }
        LargeListView(field) => {
            let array = as_large_list_view_array(input_array)?;
            list_view_reverse::<i64>(array, field)
        }
        array_type => exec_err!("array_reverse does not support type '{array_type}'."),
    }
}

fn general_array_reverse<O: OffsetSizeTrait>(
    array: &GenericListArray<O>,