Method pad_nulls

parquet/src/arrow/buffer/dictionary_buffer.rs:203–219

(
        &mut self,
        read_offset: usize,
        values_read: usize,
        levels_read: usize,
        valid_mask: &[u8],
    )

    }

    fn pad_nulls(
        &mut self,
        read_offset: usize,
        values_read: usize,
        levels_read: usize,
        valid_mask: &[u8],
    ) {
        match self {
            Self::Dict { keys, .. } => {
                keys.resize(read_offset + levels_read, K::default());
                keys.pad_nulls(read_offset, values_read, levels_read, valid_mask)
            }
            Self::Values { values, .. } => {
                values.pad_nulls(read_offset, values_read, levels_read, valid_mask)
            }
        }
    }
}

macro_rules! dict_helper {