(module main)

(import vec_i64 (empty append len at singleton append2 append3 pair triple is_empty index_or first_or last_or index_option first_option last_option index_of_option last_index_of_option contains sum concat take drop reverse subvec insert_at insert_range replace_at replace_range remove_at remove_range))

(fn imported_empty_length () -> i32
  (len (empty)))

(fn imported_pair_index () -> i64
  (at (pair 40i64 41i64) 1))

(fn original_len_after_append () -> i32
  (let values (vec i64) (empty))
  (let more (vec i64) (append values 9i64))
  (len values))

(fn option_i64_is_some_value ((value (option i64)) (expected i64)) -> bool
  (if (is_some value)
    (= (unwrap_some value) expected)
    false))

(fn option_i32_is_some_value ((value (option i32)) (expected i32)) -> bool
  (if (is_some value)
    (= (unwrap_some value) expected)
    false))

(fn imported_builder_helpers_ok () -> bool
  (if (= (len (singleton 42i64)) 1)
    (if (= (len (append2 (empty) 10i64 20i64)) 2)
      (if (= (len (append3 (singleton 10i64) 20i64 30i64 40i64)) 4)
        (if (= (pair 5i64 6i64) (append2 (empty) 5i64 6i64))
          (= (triple 7i64 8i64 9i64) (append3 (empty) 7i64 8i64 9i64))
          false)
        false)
      false)
    false))

(fn imported_query_helpers_ok () -> bool
  (if (is_empty (empty))
    (if (= (first_or (empty) 9i64) 9i64)
      (if (= (first_or (pair 40i64 41i64) 9i64) 40i64)
        (if (= (last_or (triple 10i64 20i64 30i64) 9i64) 30i64)
          (if (= (index_or (pair 40i64 41i64) -1 7i64) 7i64)
            (if (= (index_or (pair 40i64 41i64) 9 7i64) 7i64)
              (= (index_or (pair 40i64 41i64) 1 7i64) 41i64)
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_option_query_helpers_ok () -> bool
  (if (is_none (first_option (empty)))
    (if (option_i64_is_some_value (first_option (pair 40i64 41i64)) 40i64)
      (if (is_none (last_option (empty)))
        (if (option_i64_is_some_value (last_option (triple 10i64 20i64 30i64)) 30i64)
          (if (is_none (index_option (pair 40i64 41i64) -1))
            (if (is_none (index_option (pair 40i64 41i64) 9))
              (if (option_i64_is_some_value (index_option (pair 40i64 41i64) 1) 41i64)
                (if (is_none (index_of_option (append3 (pair 10i64 20i64) 30i64 20i64 10i64) 99i64))
                  (if (option_i32_is_some_value (index_of_option (append3 (pair 10i64 20i64) 30i64 20i64 10i64) 20i64) 1)
                    (if (is_none (last_index_of_option (append3 (pair 10i64 20i64) 30i64 20i64 10i64) 99i64))
                      (option_i32_is_some_value (last_index_of_option (append3 (pair 10i64 20i64) 30i64 20i64 10i64) 20i64) 3)
                      false)
                    false)
                  false)
                false)
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_transform_helpers_ok () -> bool
  (if (= (concat (empty) (pair 7i64 8i64)) (pair 7i64 8i64))
    (if (= (concat (pair 1i64 2i64) (triple 3i64 4i64 5i64)) (append3 (pair 1i64 2i64) 3i64 4i64 5i64))
      (if (= (take (triple 10i64 20i64 30i64) -4) (empty))
        (if (= (take (triple 10i64 20i64 30i64) 2) (pair 10i64 20i64))
          (if (= (take (pair 10i64 20i64) 9) (pair 10i64 20i64))
            (if (= (drop (triple 10i64 20i64 30i64) -4) (triple 10i64 20i64 30i64))
              (if (= (drop (triple 10i64 20i64 30i64) 2) (singleton 30i64))
                (if (= (drop (pair 10i64 20i64) 9) (empty))
                  (if (= (reverse (empty)) (empty))
                    (= (reverse (append3 (pair 10i64 20i64) 30i64 40i64 50i64)) (append3 (pair 50i64 40i64) 30i64 20i64 10i64))
                    false)
                  false)
                false)
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_subvec_helper_ok () -> bool
  (let original (vec i64) (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
  (if (= (subvec original -1 2) (empty))
    (if (= (subvec original 3 3) (empty))
      (if (= (subvec original 9 10) (empty))
        (if (= (subvec original 2 99) (triple 30i64 40i64 50i64))
          (if (= (subvec original 1 4) (triple 20i64 30i64 40i64))
            (= original (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
            false)
          false)
        false)
      false)
    false))

(fn imported_insert_helper_ok () -> bool
  (let values (vec i64) (triple 10i64 20i64 30i64))
  (if (= (insert_at values 1 99i64) (append2 (pair 10i64 99i64) 20i64 30i64))
    (if (= (insert_at values 3 99i64) (append values 99i64))
      (if (= values (triple 10i64 20i64 30i64))
        (if (= (insert_at values -1 99i64) values)
          (= (insert_at values 4 99i64) values)
          false)
        false)
      false)
    false))

(fn imported_insert_range_helper_ok () -> bool
  (let values (vec i64) (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
  (let inserted (vec i64) (pair 77i64 88i64))
  (if (= (insert_range values -1 inserted) values)
    (if (= (insert_range values 2 inserted) (append3 (append2 (pair 10i64 20i64) 77i64 88i64) 30i64 40i64 50i64))
      (if (= (insert_range values 5 inserted) (append2 (append2 (triple 10i64 20i64 30i64) 40i64 50i64) 77i64 88i64))
        (if (= values (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
          (if (= inserted (pair 77i64 88i64))
            (= (insert_range values 6 inserted) values)
            false)
          false)
        false)
      false)
    false))

(fn imported_replace_helper_ok () -> bool
  (if (= (replace_at (triple 10i64 20i64 30i64) 1 99i64) (triple 10i64 99i64 30i64))
    (if (= (replace_at (triple 10i64 20i64 30i64) -1 99i64) (triple 10i64 20i64 30i64))
      (= (replace_at (pair 10i64 20i64) 2 99i64) (pair 10i64 20i64))
      false)
    false))

(fn imported_replace_range_helper_ok () -> bool
  (let original (vec i64) (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
  (let replacement (vec i64) (pair 77i64 88i64))
  (if (= (replace_range original -1 2 replacement) original)
    (if (= (replace_range original 3 3 replacement) original)
      (if (= (replace_range original 4 2 replacement) original)
        (if (= (replace_range original 5 9 replacement) original)
          (if (= (replace_range original 2 99 replacement) (append2 (pair 10i64 20i64) 77i64 88i64))
            (if (= (replace_range original 1 4 replacement) (append2 (pair 10i64 77i64) 88i64 50i64))
              (if (= original (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
                (= replacement (pair 77i64 88i64))
                false)
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_remove_helper_ok () -> bool
  (let original (vec i64) (triple 10i64 20i64 30i64))
  (let removed_middle (vec i64) (remove_at original 1))
  (if (= removed_middle (pair 10i64 30i64))
    (if (= (len removed_middle) 2)
      (if (= (remove_at original 0) (pair 20i64 30i64))
        (if (= (remove_at original 2) (pair 10i64 20i64))
          (if (= original (triple 10i64 20i64 30i64))
            (if (= (remove_at original -1) original)
              (= (remove_at original 3) original)
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_remove_range_helper_ok () -> bool
  (let original (vec i64) (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
  (if (= (remove_range original -1 2) original)
    (if (= (remove_range original 3 3) original)
      (if (= (remove_range original 4 2) original)
        (if (= (remove_range original 5 9) original)
          (if (= (remove_range original 2 99) (pair 10i64 20i64))
            (if (= (remove_range original 1 4) (pair 10i64 50i64))
              (= original (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
              false)
            false)
          false)
        false)
      false)
    false))

(fn imported_real_program_helpers_ok () -> bool
  (let values (vec i64) (append2 (triple 10i64 20i64 30i64) 40i64 50i64))
  (if (= (original_len_after_append) 0)
    (if (contains values 20i64)
      (if (contains values 99i64)
        false
        (= (sum values) 150i64))
      false)
    false))

(fn helpers_all_ok () -> bool
  (if (= (imported_empty_length) 0)
    (if (= (imported_pair_index) 41i64)
      (if (imported_builder_helpers_ok)
        (if (imported_query_helpers_ok)
          (if (imported_option_query_helpers_ok)
            (if (imported_transform_helpers_ok)
              (if (imported_subvec_helper_ok)
                (if (imported_insert_helper_ok)
                  (if (imported_insert_range_helper_ok)
                    (if (imported_replace_helper_ok)
                      (if (imported_replace_range_helper_ok)
                        (if (imported_remove_helper_ok)
                          (if (imported_remove_range_helper_ok)
                            (imported_real_program_helpers_ok)
                            false)
                          false)
                        false)
                      false)
                    false)
                  false)
                false)
              false)
            false)
          false)
        false)
      false)
    false))

(test "explicit local vec_i64 empty len facade"
  (= (imported_empty_length) 0))

(test "explicit local vec_i64 direct at facade"
  (= (imported_pair_index) 41i64))

(test "explicit local vec_i64 builder helpers"
  (imported_builder_helpers_ok))

(test "explicit local vec_i64 query helpers"
  (imported_query_helpers_ok))

(test "explicit local vec_i64 option query helpers"
  (imported_option_query_helpers_ok))

(test "explicit local vec_i64 transform helpers"
  (imported_transform_helpers_ok))

(test "explicit local vec_i64 subvec helper"
  (imported_subvec_helper_ok))

(test "explicit local vec_i64 insert helper"
  (imported_insert_helper_ok))

(test "explicit local vec_i64 insert range helper"
  (imported_insert_range_helper_ok))

(test "explicit local vec_i64 replace helper"
  (imported_replace_helper_ok))

(test "explicit local vec_i64 replace range helper"
  (imported_replace_range_helper_ok))

(test "explicit local vec_i64 remove helper"
  (imported_remove_helper_ok))

(test "explicit local vec_i64 remove range helper"
  (imported_remove_range_helper_ok))

(test "explicit local vec_i64 real program helpers"
  (imported_real_program_helpers_ok))

(test "explicit local vec_i64 helpers all"
  (helpers_all_ok))

(fn main () -> i32
  (if (helpers_all_ok)
    0
    1))
