-module(glisp@stdlib).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([standard_env/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

-file("src/glisp/stdlib.gleam", 37).
-spec add(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} | {error, binary()}.
add(Args) ->
    _pipe = Args,
    _pipe@1 = gleam@list:try_map(_pipe, fun(Arg) -> case Arg of
                {number, N} ->
                    {ok, N};

                _ ->
                    {error, <<"Expected number in addition"/utf8>>}
            end end),
    gleam@result:map(
        _pipe@1,
        fun(Nums) ->
            {number, gleam@list:fold(Nums, 0, fun(Acc, N@1) -> Acc + N@1 end)}
        end
    ).

-file("src/glisp/stdlib.gleam", 48).
-spec subtract(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
subtract(Args) ->
    case Args of
        [] ->
            {error, <<"- requires at least one argument"/utf8>>};

        [{number, First} | Rest] ->
            _pipe = Rest,
            _pipe@1 = gleam@list:try_map(_pipe, fun(Arg) -> case Arg of
                        {number, N} ->
                            {ok, N};

                        _ ->
                            {error, <<"Expected number in subtraction"/utf8>>}
                    end end),
            gleam@result:map(_pipe@1, fun(Nums) -> case erlang:length(Nums) of
                        0 ->
                            {number, 0 - First};

                        _ ->
                            {number,
                                gleam@list:fold(
                                    Nums,
                                    First,
                                    fun(Acc, N@1) -> Acc - N@1 end
                                )}
                    end end);

        _ ->
            {error, <<"Expected number as first argument to -"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 72).
-spec multiply(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
multiply(Args) ->
    _pipe = Args,
    _pipe@1 = gleam@list:try_map(_pipe, fun(Arg) -> case Arg of
                {number, N} ->
                    {ok, N};

                _ ->
                    {error, <<"Expected number in multiplication"/utf8>>}
            end end),
    gleam@result:map(
        _pipe@1,
        fun(Nums) ->
            {number, gleam@list:fold(Nums, 1, fun(Acc, N@1) -> Acc * N@1 end)}
        end
    ).

-file("src/glisp/stdlib.gleam", 83).
-spec divide(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
divide(Args) ->
    case Args of
        [] ->
            {error, <<"/ requires at least one argument"/utf8>>};

        [{number, First} | Rest] ->
            _pipe = Rest,
            _pipe@1 = gleam@list:try_map(_pipe, fun(Arg) -> case Arg of
                        {number, N} ->
                            case N of
                                0 ->
                                    {error, <<"Division by zero"/utf8>>};

                                _ ->
                                    {ok, N}
                            end;

                        _ ->
                            {error, <<"Expected number in division"/utf8>>}
                    end end),
            gleam@result:map(_pipe@1, fun(Nums) -> case erlang:length(Nums) of
                        0 ->
                            {number, case First of
                                    0 -> 0;
                                    Gleam@denominator -> 1 div Gleam@denominator
                                end};

                        _ ->
                            {number,
                                gleam@list:fold(
                                    Nums,
                                    First,
                                    fun(Acc, N@1) -> case N@1 of
                                            0 -> 0;
                                            Gleam@denominator@1 -> Acc div Gleam@denominator@1
                                        end end
                                )}
                    end end);

        _ ->
            {error, <<"Expected number as first argument to /"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 111).
-spec equals(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
equals(Args) ->
    case Args of
        [A, B] ->
            case A =:= B of
                true ->
                    {ok, {number, 1}};

                false ->
                    {ok, {number, 0}}
            end;

        _ ->
            {error, <<"= requires exactly 2 arguments"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 124).
-spec less_than(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
less_than(Args) ->
    case Args of
        [{number, A}, {number, B}] ->
            case A > B of
                true ->
                    {ok, {number, 1}};

                false ->
                    {ok, {number, 0}}
            end;

        [_, _] ->
            {error, <<"'<' requires numeric arguments"/utf8>>};

        _ ->
            {error, <<"'<' requires exactly 2 arguments"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 137).
-spec greater_than(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
greater_than(Args) ->
    case Args of
        [{number, A}, {number, B}] ->
            case A > B of
                true ->
                    {ok, {number, 1}};

                false ->
                    {ok, {number, 0}}
            end;

        [_, _] ->
            {error, <<"'>' requires numeric arguments"/utf8>>};

        _ ->
            {error, <<"'>' requires exactly 2 arguments"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 150).
-spec make_list(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
make_list(Args) ->
    {ok, {list, Args}}.

-file("src/glisp/stdlib.gleam", 154).
-spec car(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} | {error, binary()}.
car(Args) ->
    case Args of
        [{list, [Head | _]}] ->
            {ok, Head};

        [{list, []}] ->
            {error, <<"car: cannot get first element of empty list"/utf8>>};

        [_] ->
            {error, <<"car: argument must be a list"/utf8>>};

        _ ->
            {error, <<"car: expected exactly one argument"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 165).
-spec cdr(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} | {error, binary()}.
cdr(Args) ->
    case Args of
        [{list, [_ | Tail]}] ->
            {ok, {list, Tail}};

        [{list, []}] ->
            {error, <<"cdr: cannot get rest of empty list"/utf8>>};

        [_] ->
            {error, <<"cdr: argument must be a list"/utf8>>};

        _ ->
            {error, <<"cdr: expected exactly one argument"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 176).
-spec cons(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} | {error, binary()}.
cons(Args) ->
    case Args of
        [Head, {list, Tail}] ->
            {ok, {list, [Head | Tail]}};

        [_, _] ->
            {error, <<"cons: second argument must be a list"/utf8>>};

        _ ->
            {error, <<"cons: expected exactly two arguments"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 186).
-spec length(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
length(Args) ->
    case Args of
        [{list, Elements}] ->
            {ok, {number, erlang:length(Elements)}};

        [_] ->
            {error, <<"length: argunment must be a list"/utf8>>};

        _ ->
            {error, <<"length: expected exactly one argument"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 196).
-spec null(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} | {error, binary()}.
null(Args) ->
    case Args of
        [{list, []}] ->
            {ok, {number, 1}};

        [{list, _}] ->
            {ok, {number, 0}};

        [_] ->
            {error, <<"null?: argument must be a list"/utf8>>};

        _ ->
            {error, <<"null?: expected exactly one argument"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 207).
-spec 'not'(list(glisp@ast:expr())) -> {ok, glisp@ast:expr()} |
    {error, binary()}.
'not'(Args) ->
    case Args of
        [{number, 0}] ->
            {ok, {number, 1}};

        [_] ->
            {ok, {number, 0}};

        _ ->
            {error, <<"not: expected exactly one argument"/utf8>>}
    end.

-file("src/glisp/stdlib.gleam", 13).
?DOC(
    " Create a standard environment with built-in functions\n"
    "\n"
    " This includes arithmetic operators (+, -, *, /), comparison operators (=, <, >),\n"
    " list manipulation functions (list, car, cdr, cons, length, null?), and logical\n"
    " operations (not).\n"
    "\n"
    " Returns an `Env` that can be used as the basis for evaluating expressions.\n"
).
-spec standard_env() -> gleam@dict:dict(binary(), glisp@ast:expr()).
standard_env() ->
    Env = begin
        _pipe = glisp@environment:new(),
        _pipe@1 = glisp@environment:set(
            _pipe,
            <<"+"/utf8>>,
            {builtin, fun add/1}
        ),
        _pipe@2 = glisp@environment:set(
            _pipe@1,
            <<"-"/utf8>>,
            {builtin, fun subtract/1}
        ),
        _pipe@3 = glisp@environment:set(
            _pipe@2,
            <<"*"/utf8>>,
            {builtin, fun multiply/1}
        ),
        _pipe@4 = glisp@environment:set(
            _pipe@3,
            <<"/"/utf8>>,
            {builtin, fun divide/1}
        ),
        _pipe@5 = glisp@environment:set(
            _pipe@4,
            <<"="/utf8>>,
            {builtin, fun equals/1}
        ),
        _pipe@6 = glisp@environment:set(
            _pipe@5,
            <<"<"/utf8>>,
            {builtin, fun less_than/1}
        ),
        _pipe@7 = glisp@environment:set(
            _pipe@6,
            <<">"/utf8>>,
            {builtin, fun greater_than/1}
        ),
        _pipe@8 = glisp@environment:set(
            _pipe@7,
            <<"list"/utf8>>,
            {builtin, fun make_list/1}
        ),
        _pipe@9 = glisp@environment:set(
            _pipe@8,
            <<"car"/utf8>>,
            {builtin, fun car/1}
        ),
        _pipe@10 = glisp@environment:set(
            _pipe@9,
            <<"cdr"/utf8>>,
            {builtin, fun cdr/1}
        ),
        _pipe@11 = glisp@environment:set(
            _pipe@10,
            <<"cons"/utf8>>,
            {builtin, fun cons/1}
        ),
        _pipe@12 = glisp@environment:set(
            _pipe@11,
            <<"length"/utf8>>,
            {builtin, fun length/1}
        ),
        _pipe@13 = glisp@environment:set(
            _pipe@12,
            <<"null?"/utf8>>,
            {builtin, fun null/1}
        ),
        glisp@environment:set(_pipe@13, <<"not"/utf8>>, {builtin, fun 'not'/1})
    end,
    Env.