(use "errno.witx")
(use "excuse.witx")

(typename $const_excuse_array (array (@witx const_pointer $excuse)))
(typename $excuse_array (array (@witx pointer $excuse)))

(module $arrays
  (@interface func (export "reduce_excuses")
    (param $excuses $const_excuse_array)
    (result $error $errno)
    (result $reduced $excuse)
  )
  (@interface func (export "populate_excuses")
    (param $excuses $excuse_array)
    (result $error $errno)
  )
)

(typename $pair_ints
  (struct
    (field $first s32)
    (field $second s32)))

(module $array_traversal
  (@interface func (export "sum_of_element")
    (param $elements (array $pair_ints))
    (param $index (@witx usize))
    (result $error $errno)
    (result $sum s32))

  (@interface func (export "sum_of_elements")
    (param $elements (array $pair_ints))
    (param $start (@witx usize))
    (param $end (@witx usize))
    (result $error $errno)
    (result $sum s32)))