Macro euc_jp_decoder_function

macro_rules! euc_jp_decoder_function {
    ($jis0802_trail_body:block,
     $jis0812_lead_body:block,
     $jis0812_trail_body:block,
     $half_width_katakana_body:block,
     $slf:ident,
     $non_ascii:ident,
     $jis0208_lead_minus_offset:ident,
     $byte:ident,
     $unread_handle_trail:ident,
     $jis0212_lead_minus_offset:ident,
     $lead:ident,
     $unread_handle_jis0212:ident,
     $source:ident,
     $handle:ident,
     $name:ident,
     $code_unit:ty,
     $dest_struct:ident) => { ... };
}