-module(gleam@iterator).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([unfold/2, repeatedly/1, repeat/1, from_list/1, transform/3, fold/3, run/1, to_list/1, step/1, take/2, drop/2, map/2, map2/3, append/2, flatten/1, concat/1, flat_map/2, filter/2, filter_map/2, cycle/1, find/2, find_map/2, index/1, iterate/2, take_while/2, drop_while/2, scan/3, zip/2, chunk/2, sized_chunk/2, intersperse/2, any/2, all/2, group/2, reduce/2, last/1, empty/0, once/1, range/2, single/1, interleave/2, fold_until/3, try_fold/3, first/1, at/2, length/1, each/2, yield/2]).
-export_type([action/1, iterator/1, step/2, chunk/2, sized_chunk/1]).

-type action(BWJ) :: stop | {continue, BWJ, fun(() -> action(BWJ))}.

-opaque iterator(BWK) :: {iterator, fun(() -> action(BWK))}.

-type step(BWL, BWM) :: {next, BWL, BWM} | done.

-type chunk(BWN, BWO) :: {another_by,
        list(BWN),
        BWO,
        BWN,
        fun(() -> action(BWN))} |
    {last_by, list(BWN)}.

-type sized_chunk(BWP) :: {another, list(BWP), fun(() -> action(BWP))} |
    {last, list(BWP)} |
    no_more.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 38).
-spec stop() -> action(any()).
stop() ->
    stop.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 43).
-spec do_unfold(BWS, fun((BWS) -> step(BWT, BWS))) -> fun(() -> action(BWT)).
do_unfold(Initial, F) ->
    fun() -> case F(Initial) of
            {next, X, Acc} ->
                {continue, X, do_unfold(Acc, F)};

            done ->
                stop
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 76).
-spec unfold(BWX, fun((BWX) -> step(BWY, BWX))) -> iterator(BWY).
unfold(Initial, F) ->
    _pipe = Initial,
    _pipe@1 = do_unfold(_pipe, F),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 89).
-spec repeatedly(fun(() -> BXC)) -> iterator(BXC).
repeatedly(F) ->
    unfold(nil, fun(_) -> {next, F(), nil} end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 104).
-spec repeat(BXE) -> iterator(BXE).
repeat(X) ->
    repeatedly(fun() -> X end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 118).
-spec from_list(list(BXG)) -> iterator(BXG).
from_list(List) ->
    Yield = fun(Acc) -> case Acc of
            [] ->
                done;

            [Head | Tail] ->
                {next, Head, Tail}
        end end,
    unfold(List, Yield).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 129).
-spec do_transform(
    fun(() -> action(BXJ)),
    BXL,
    fun((BXL, BXJ) -> step(BXM, BXL))
) -> fun(() -> action(BXM)).
do_transform(Continuation, State, F) ->
    fun() -> case Continuation() of
            stop ->
                stop;

            {continue, El, Next} ->
                case F(State, El) of
                    done ->
                        stop;

                    {next, Yield, Next_state} ->
                        {continue, Yield, do_transform(Next, Next_state, F)}
                end
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 164).
-spec transform(iterator(BXQ), BXS, fun((BXS, BXQ) -> step(BXT, BXS))) -> iterator(BXT).
transform(Iterator, Initial, F) ->
    _pipe = do_transform(erlang:element(2, Iterator), Initial, F),
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 173).
-spec do_fold(fun(() -> action(BXX)), fun((BXZ, BXX) -> BXZ), BXZ) -> BXZ.
do_fold(Continuation, F, Accumulator) ->
    case Continuation() of
        {continue, Elem, Next} ->
            do_fold(Next, F, F(Accumulator, Elem));

        stop ->
            Accumulator
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 201).
-spec fold(iterator(BYA), BYC, fun((BYC, BYA) -> BYC)) -> BYC.
fold(Iterator, Initial, F) ->
    _pipe = erlang:element(2, Iterator),
    do_fold(_pipe, F, Initial).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 215).
-spec run(iterator(any())) -> nil.
run(Iterator) ->
    fold(Iterator, nil, fun(_, _) -> nil end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 233).
-spec to_list(iterator(BYF)) -> list(BYF).
to_list(Iterator) ->
    _pipe = Iterator,
    _pipe@1 = fold(_pipe, [], fun(Acc, E) -> [E | Acc] end),
    lists:reverse(_pipe@1).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 261).
-spec step(iterator(BYI)) -> step(BYI, iterator(BYI)).
step(Iterator) ->
    case (erlang:element(2, Iterator))() of
        stop ->
            done;

        {continue, E, A} ->
            {next, E, {iterator, A}}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 268).
-spec do_take(fun(() -> action(BYN)), integer()) -> fun(() -> action(BYN)).
do_take(Continuation, Desired) ->
    fun() -> case Desired > 0 of
            false ->
                stop;

            true ->
                case Continuation() of
                    stop ->
                        stop;

                    {continue, E, Next} ->
                        {continue, E, do_take(Next, Desired - 1)}
                end
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 301).
-spec take(iterator(BYQ), integer()) -> iterator(BYQ).
take(Iterator, Desired) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_take(_pipe, Desired),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 307).
-spec do_drop(fun(() -> action(BYT)), integer()) -> action(BYT).
do_drop(Continuation, Desired) ->
    case Continuation() of
        stop ->
            stop;

        {continue, E, Next} ->
            case Desired > 0 of
                true ->
                    do_drop(Next, Desired - 1);

                false ->
                    {continue, E, Next}
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 343).
-spec drop(iterator(BYW), integer()) -> iterator(BYW).
drop(Iterator, Desired) ->
    _pipe = fun() -> do_drop(erlang:element(2, Iterator), Desired) end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 348).
-spec do_map(fun(() -> action(BYZ)), fun((BYZ) -> BZB)) -> fun(() -> action(BZB)).
do_map(Continuation, F) ->
    fun() -> case Continuation() of
            stop ->
                stop;

            {continue, E, Continuation@1} ->
                {continue, F(E), do_map(Continuation@1, F)}
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 374).
-spec map(iterator(BZD), fun((BZD) -> BZF)) -> iterator(BZF).
map(Iterator, F) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_map(_pipe, F),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 380).
-spec do_map2(
    fun(() -> action(BZH)),
    fun(() -> action(BZJ)),
    fun((BZH, BZJ) -> BZL)
) -> fun(() -> action(BZL)).
do_map2(Continuation1, Continuation2, Fun) ->
    fun() -> case Continuation1() of
            stop ->
                stop;

            {continue, A, Next_a} ->
                case Continuation2() of
                    stop ->
                        stop;

                    {continue, B, Next_b} ->
                        {continue, Fun(A, B), do_map2(Next_a, Next_b, Fun)}
                end
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 421).
-spec map2(iterator(BZN), iterator(BZP), fun((BZN, BZP) -> BZR)) -> iterator(BZR).
map2(Iterator1, Iterator2, Fun) ->
    _pipe = do_map2(
        erlang:element(2, Iterator1),
        erlang:element(2, Iterator2),
        Fun
    ),
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 430).
-spec do_append(fun(() -> action(BZT)), fun(() -> action(BZT))) -> action(BZT).
do_append(First, Second) ->
    case First() of
        {continue, E, First@1} ->
            {continue, E, fun() -> do_append(First@1, Second) end};

        stop ->
            Second()
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 451).
-spec append(iterator(BZX), iterator(BZX)) -> iterator(BZX).
append(First, Second) ->
    _pipe = fun() ->
        do_append(erlang:element(2, First), erlang:element(2, Second))
    end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 456).
-spec do_flatten(fun(() -> action(iterator(CAB)))) -> action(CAB).
do_flatten(Flattened) ->
    case Flattened() of
        stop ->
            stop;

        {continue, It, Next_iterator} ->
            do_append(
                erlang:element(2, It),
                fun() -> do_flatten(Next_iterator) end
            )
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 479).
-spec flatten(iterator(iterator(CAF))) -> iterator(CAF).
flatten(Iterator) ->
    _pipe = fun() -> do_flatten(erlang:element(2, Iterator)) end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 499).
-spec concat(list(iterator(CAJ))) -> iterator(CAJ).
concat(Iterators) ->
    flatten(from_list(Iterators)).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 521).
-spec flat_map(iterator(CAN), fun((CAN) -> iterator(CAP))) -> iterator(CAP).
flat_map(Iterator, F) ->
    _pipe = Iterator,
    _pipe@1 = map(_pipe, F),
    flatten(_pipe@1).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 530).
-spec do_filter(fun(() -> action(CAS)), fun((CAS) -> boolean())) -> action(CAS).
do_filter(Continuation, Predicate) ->
    case Continuation() of
        stop ->
            stop;

        {continue, E, Iterator} ->
            case Predicate(E) of
                true ->
                    {continue, E, fun() -> do_filter(Iterator, Predicate) end};

                false ->
                    do_filter(Iterator, Predicate)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 563).
-spec filter(iterator(CAV), fun((CAV) -> boolean())) -> iterator(CAV).
filter(Iterator, Predicate) ->
    _pipe = fun() -> do_filter(erlang:element(2, Iterator), Predicate) end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 571).
-spec do_filter_map(
    fun(() -> action(CAY)),
    fun((CAY) -> {ok, CBA} | {error, any()})
) -> action(CBA).
do_filter_map(Continuation, F) ->
    case Continuation() of
        stop ->
            stop;

        {continue, E, Next} ->
            case F(E) of
                {ok, E@1} ->
                    {continue, E@1, fun() -> do_filter_map(Next, F) end};

                {error, _} ->
                    do_filter_map(Next, F)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 607).
-spec filter_map(iterator(CBF), fun((CBF) -> {ok, CBH} | {error, any()})) -> iterator(CBH).
filter_map(Iterator, F) ->
    _pipe = fun() -> do_filter_map(erlang:element(2, Iterator), F) end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 627).
-spec cycle(iterator(CBM)) -> iterator(CBM).
cycle(Iterator) ->
    _pipe = repeat(Iterator),
    flatten(_pipe).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 673).
-spec do_find(fun(() -> action(CBQ)), fun((CBQ) -> boolean())) -> {ok, CBQ} |
    {error, nil}.
do_find(Continuation, F) ->
    case Continuation() of
        stop ->
            {error, nil};

        {continue, E, Next} ->
            case F(E) of
                true ->
                    {ok, E};

                false ->
                    do_find(Next, F)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 707).
-spec find(iterator(CBU), fun((CBU) -> boolean())) -> {ok, CBU} | {error, nil}.
find(Haystack, Is_desired) ->
    _pipe = erlang:element(2, Haystack),
    do_find(_pipe, Is_desired).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 715).
-spec do_find_map(
    fun(() -> action(CBY)),
    fun((CBY) -> {ok, CCA} | {error, any()})
) -> {ok, CCA} | {error, nil}.
do_find_map(Continuation, F) ->
    case Continuation() of
        stop ->
            {error, nil};

        {continue, E, Next} ->
            case F(E) of
                {ok, E@1} ->
                    {ok, E@1};

                {error, _} ->
                    do_find_map(Next, F)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 752).
-spec find_map(iterator(CCG), fun((CCG) -> {ok, CCI} | {error, any()})) -> {ok,
        CCI} |
    {error, nil}.
find_map(Haystack, Is_desired) ->
    _pipe = erlang:element(2, Haystack),
    do_find_map(_pipe, Is_desired).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 760).
-spec do_index(fun(() -> action(CCO)), integer()) -> fun(() -> action({CCO,
    integer()})).
do_index(Continuation, Next) ->
    fun() -> case Continuation() of
            stop ->
                stop;

            {continue, E, Continuation@1} ->
                {continue, {E, Next}, do_index(Continuation@1, Next + 1)}
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 782).
-spec index(iterator(CCR)) -> iterator({CCR, integer()}).
index(Iterator) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_index(_pipe, 0),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 797).
-spec iterate(CCU, fun((CCU) -> CCU)) -> iterator(CCU).
iterate(Initial, F) ->
    unfold(Initial, fun(Element) -> {next, Element, F(Element)} end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 804).
-spec do_take_while(fun(() -> action(CCW)), fun((CCW) -> boolean())) -> fun(() -> action(CCW)).
do_take_while(Continuation, Predicate) ->
    fun() -> case Continuation() of
            stop ->
                stop;

            {continue, E, Next} ->
                case Predicate(E) of
                    false ->
                        stop;

                    true ->
                        {continue, E, do_take_while(Next, Predicate)}
                end
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 831).
-spec take_while(iterator(CCZ), fun((CCZ) -> boolean())) -> iterator(CCZ).
take_while(Iterator, Predicate) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_take_while(_pipe, Predicate),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 840).
-spec do_drop_while(fun(() -> action(CDC)), fun((CDC) -> boolean())) -> action(CDC).
do_drop_while(Continuation, Predicate) ->
    case Continuation() of
        stop ->
            stop;

        {continue, E, Next} ->
            case Predicate(E) of
                false ->
                    {continue, E, Next};

                true ->
                    do_drop_while(Next, Predicate)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 866).
-spec drop_while(iterator(CDF), fun((CDF) -> boolean())) -> iterator(CDF).
drop_while(Iterator, Predicate) ->
    _pipe = fun() -> do_drop_while(erlang:element(2, Iterator), Predicate) end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 874).
-spec do_scan(fun(() -> action(CDI)), fun((CDK, CDI) -> CDK), CDK) -> fun(() -> action(CDK)).
do_scan(Continuation, F, Accumulator) ->
    fun() -> case Continuation() of
            stop ->
                stop;

            {continue, El, Next} ->
                Accumulated = F(Accumulator, El),
                {continue, Accumulated, do_scan(Next, F, Accumulated)}
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 904).
-spec scan(iterator(CDM), CDO, fun((CDO, CDM) -> CDO)) -> iterator(CDO).
scan(Iterator, Initial, F) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_scan(_pipe, F, Initial),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 914).
-spec do_zip(fun(() -> action(CDQ)), fun(() -> action(CDS))) -> fun(() -> action({CDQ,
    CDS})).
do_zip(Left, Right) ->
    fun() -> case Left() of
            stop ->
                stop;

            {continue, El_left, Next_left} ->
                case Right() of
                    stop ->
                        stop;

                    {continue, El_right, Next_right} ->
                        {continue,
                            {El_left, El_right},
                            do_zip(Next_left, Next_right)}
                end
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 943).
-spec zip(iterator(CDV), iterator(CDX)) -> iterator({CDV, CDX}).
zip(Left, Right) ->
    _pipe = do_zip(erlang:element(2, Left), erlang:element(2, Right)),
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 954).
-spec next_chunk(fun(() -> action(CEA)), fun((CEA) -> CEC), CEC, list(CEA)) -> chunk(CEA, CEC).
next_chunk(Continuation, F, Previous_key, Current_chunk) ->
    case Continuation() of
        stop ->
            {last_by, lists:reverse(Current_chunk)};

        {continue, E, Next} ->
            Key = F(E),
            case Key =:= Previous_key of
                true ->
                    next_chunk(Next, F, Key, [E | Current_chunk]);

                false ->
                    {another_by, lists:reverse(Current_chunk), Key, E, Next}
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 972).
-spec do_chunk(fun(() -> action(CEG)), fun((CEG) -> CEI), CEI, CEG) -> action(list(CEG)).
do_chunk(Continuation, F, Previous_key, Previous_element) ->
    case next_chunk(Continuation, F, Previous_key, [Previous_element]) of
        {last_by, Chunk} ->
            {continue, Chunk, fun stop/0};

        {another_by, Chunk@1, Key, El, Next} ->
            {continue, Chunk@1, fun() -> do_chunk(Next, F, Key, El) end}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 997).
-spec chunk(iterator(CEL), fun((CEL) -> any())) -> iterator(list(CEL)).
chunk(Iterator, F) ->
    _pipe = fun() -> case (erlang:element(2, Iterator))() of
            stop ->
                stop;

            {continue, E, Next} ->
                do_chunk(Next, F, F(E), E)
        end end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1017).
-spec next_sized_chunk(fun(() -> action(CEQ)), integer(), list(CEQ)) -> sized_chunk(CEQ).
next_sized_chunk(Continuation, Left, Current_chunk) ->
    case Continuation() of
        stop ->
            case Current_chunk of
                [] ->
                    no_more;

                Remaining ->
                    {last, lists:reverse(Remaining)}
            end;

        {continue, E, Next} ->
            Chunk = [E | Current_chunk],
            case Left > 1 of
                false ->
                    {another, lists:reverse(Chunk), Next};

                true ->
                    next_sized_chunk(Next, Left - 1, Chunk)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1038).
-spec do_sized_chunk(fun(() -> action(CEU)), integer()) -> fun(() -> action(list(CEU))).
do_sized_chunk(Continuation, Count) ->
    fun() -> case next_sized_chunk(Continuation, Count, []) of
            no_more ->
                stop;

            {last, Chunk} ->
                {continue, Chunk, fun stop/0};

            {another, Chunk@1, Next_element} ->
                {continue, Chunk@1, do_sized_chunk(Next_element, Count)}
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1075).
-spec sized_chunk(iterator(CEY), integer()) -> iterator(list(CEY)).
sized_chunk(Iterator, Count) ->
    _pipe = erlang:element(2, Iterator),
    _pipe@1 = do_sized_chunk(_pipe, Count),
    {iterator, _pipe@1}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1084).
-spec do_intersperse(fun(() -> action(CFC)), CFC) -> action(CFC).
do_intersperse(Continuation, Separator) ->
    case Continuation() of
        stop ->
            stop;

        {continue, E, Next} ->
            Next_interspersed = fun() -> do_intersperse(Next, Separator) end,
            {continue, Separator, fun() -> {continue, E, Next_interspersed} end}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1123).
-spec intersperse(iterator(CFF), CFF) -> iterator(CFF).
intersperse(Iterator, Elem) ->
    _pipe = fun() -> case (erlang:element(2, Iterator))() of
            stop ->
                stop;

            {continue, E, Next} ->
                {continue, E, fun() -> do_intersperse(Next, Elem) end}
        end end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1136).
-spec do_any(fun(() -> action(CFI)), fun((CFI) -> boolean())) -> boolean().
do_any(Continuation, Predicate) ->
    case Continuation() of
        stop ->
            false;

        {continue, E, Next} ->
            case Predicate(E) of
                true ->
                    true;

                false ->
                    do_any(Next, Predicate)
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1177).
-spec any(iterator(CFK), fun((CFK) -> boolean())) -> boolean().
any(Iterator, Predicate) ->
    _pipe = erlang:element(2, Iterator),
    do_any(_pipe, Predicate).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1185).
-spec do_all(fun(() -> action(CFM)), fun((CFM) -> boolean())) -> boolean().
do_all(Continuation, Predicate) ->
    case Continuation() of
        stop ->
            true;

        {continue, E, Next} ->
            case Predicate(E) of
                true ->
                    do_all(Next, Predicate);

                false ->
                    false
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1226).
-spec all(iterator(CFO), fun((CFO) -> boolean())) -> boolean().
all(Iterator, Predicate) ->
    _pipe = erlang:element(2, Iterator),
    do_all(_pipe, Predicate).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1234).
-spec update_group_with(CFQ) -> fun((gleam@option:option(list(CFQ))) -> list(CFQ)).
update_group_with(El) ->
    fun(Maybe_group) -> case Maybe_group of
            {some, Group} ->
                [El | Group];

            none ->
                [El]
        end end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1243).
-spec group_updater(fun((CFU) -> CFV)) -> fun((gleam@dict:dict(CFV, list(CFU)), CFU) -> gleam@dict:dict(CFV, list(CFU))).
group_updater(F) ->
    fun(Groups, Elem) -> _pipe = Groups,
        gleam@dict:update(_pipe, F(Elem), update_group_with(Elem)) end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1265).
-spec group(iterator(CGC), fun((CGC) -> CGE)) -> gleam@dict:dict(CGE, list(CGC)).
group(Iterator, Key) ->
    _pipe = Iterator,
    _pipe@1 = fold(_pipe, gleam@dict:new(), group_updater(Key)),
    gleam@dict:map_values(_pipe@1, fun(_, Group) -> lists:reverse(Group) end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1295).
-spec reduce(iterator(CGI), fun((CGI, CGI) -> CGI)) -> {ok, CGI} | {error, nil}.
reduce(Iterator, F) ->
    case (erlang:element(2, Iterator))() of
        stop ->
            {error, nil};

        {continue, E, Next} ->
            _pipe = do_fold(Next, F, E),
            {ok, _pipe}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1325).
-spec last(iterator(CGM)) -> {ok, CGM} | {error, nil}.
last(Iterator) ->
    _pipe = Iterator,
    reduce(_pipe, fun(_, Elem) -> Elem end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1339).
-spec empty() -> iterator(any()).
empty() ->
    {iterator, fun stop/0}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1352).
-spec once(fun(() -> CGS)) -> iterator(CGS).
once(F) ->
    _pipe = fun() -> {continue, F(), fun stop/0} end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 652).
-spec range(integer(), integer()) -> iterator(integer()).
range(Start, Stop) ->
    case gleam@int:compare(Start, Stop) of
        eq ->
            once(fun() -> Start end);

        gt ->
            unfold(Start, fun(Current) -> case Current < Stop of
                        false ->
                            {next, Current, Current - 1};

                        true ->
                            done
                    end end);

        lt ->
            unfold(Start, fun(Current@1) -> case Current@1 > Stop of
                        false ->
                            {next, Current@1, Current@1 + 1};

                        true ->
                            done
                    end end)
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1366).
-spec single(CGU) -> iterator(CGU).
single(Elem) ->
    once(fun() -> Elem end).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1370).
-spec do_interleave(fun(() -> action(CGW)), fun(() -> action(CGW))) -> action(CGW).
do_interleave(Current, Next) ->
    case Current() of
        stop ->
            Next();

        {continue, E, Next_other} ->
            {continue, E, fun() -> do_interleave(Next, Next_other) end}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1400).
-spec interleave(iterator(CHA), iterator(CHA)) -> iterator(CHA).
interleave(Left, Right) ->
    _pipe = fun() ->
        do_interleave(erlang:element(2, Left), erlang:element(2, Right))
    end,
    {iterator, _pipe}.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1408).
-spec do_fold_until(
    fun(() -> action(CHE)),
    fun((CHG, CHE) -> gleam@list:continue_or_stop(CHG)),
    CHG
) -> CHG.
do_fold_until(Continuation, F, Accumulator) ->
    case Continuation() of
        stop ->
            Accumulator;

        {continue, Elem, Next} ->
            case F(Accumulator, Elem) of
                {continue, Accumulator@1} ->
                    do_fold_until(Next, F, Accumulator@1);

                {stop, Accumulator@2} ->
                    Accumulator@2
            end
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1447).
-spec fold_until(
    iterator(CHI),
    CHK,
    fun((CHK, CHI) -> gleam@list:continue_or_stop(CHK))
) -> CHK.
fold_until(Iterator, Initial, F) ->
    _pipe = erlang:element(2, Iterator),
    do_fold_until(_pipe, F, Initial).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1456).
-spec do_try_fold(
    fun(() -> action(CHM)),
    fun((CHO, CHM) -> {ok, CHO} | {error, CHP}),
    CHO
) -> {ok, CHO} | {error, CHP}.
do_try_fold(Continuation, F, Accumulator) ->
    case Continuation() of
        stop ->
            {ok, Accumulator};

        {continue, Elem, Next} ->
            gleam@result:'try'(
                F(Accumulator, Elem),
                fun(Accumulator@1) -> do_try_fold(Next, F, Accumulator@1) end
            )
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1489).
-spec try_fold(iterator(CHU), CHW, fun((CHW, CHU) -> {ok, CHW} | {error, CHX})) -> {ok,
        CHW} |
    {error, CHX}.
try_fold(Iterator, Initial, F) ->
    _pipe = erlang:element(2, Iterator),
    do_try_fold(_pipe, F, Initial).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1512).
-spec first(iterator(CIC)) -> {ok, CIC} | {error, nil}.
first(Iterator) ->
    case (erlang:element(2, Iterator))() of
        stop ->
            {error, nil};

        {continue, E, _} ->
            {ok, E}
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1542).
-spec at(iterator(CIG), integer()) -> {ok, CIG} | {error, nil}.
at(Iterator, Index) ->
    _pipe = Iterator,
    _pipe@1 = drop(_pipe, Index),
    first(_pipe@1).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1548).
-spec do_length(fun(() -> action(any())), integer()) -> integer().
do_length(Continuation, Length) ->
    case Continuation() of
        stop ->
            Length;

        {continue, _, Next} ->
            do_length(Next, Length + 1)
    end.

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1572).
-spec length(iterator(any())) -> integer().
length(Iterator) ->
    _pipe = erlang:element(2, Iterator),
    do_length(_pipe, 0).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1594).
-spec each(iterator(CIO), fun((CIO) -> any())) -> nil.
each(Iterator, F) ->
    _pipe = Iterator,
    _pipe@1 = map(_pipe, F),
    run(_pipe@1).

-file("/home/pgbiel/GitHub/glistix_stdlib/src/gleam/iterator.gleam", 1619).
-spec yield(CIR, fun(() -> iterator(CIR))) -> iterator(CIR).
yield(Element, Next) ->
    {iterator, fun() -> {continue, Element, erlang:element(2, Next())} end}.