-module(kdleam@comment).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/kdleam/comment.gleam").
-export([skip_single_line_comment/1, skip_block_comment/1, skip_ws/1, skip_line_space/1, skip_node_space/1]).

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

?MODULEDOC(false).

-file("src/kdleam/comment.gleam", 7).
?DOC(false).
-spec skip_single_line_comment(kdleam@scanner:scanner()) -> {ok,
        kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_single_line_comment(S) ->
    case kdleam@scanner:peek(S) of
        {some, Ch} ->
            case kdleam@scanner:is_newline(Ch) of
                true ->
                    {ok, S};

                false ->
                    {_, Next} = kdleam@scanner:advance(S),
                    skip_single_line_comment(Next)
            end;

        none ->
            {ok, S}
    end.

-file("src/kdleam/comment.gleam", 26).
?DOC(false).
-spec skip_block_comment_depth(kdleam@scanner:scanner(), integer()) -> {ok,
        kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_block_comment_depth(S, Depth) ->
    case Depth =< 0 of
        true ->
            {ok, S};

        false ->
            case kdleam@scanner:peek(S) of
                none ->
                    {error,
                        kdleam@scanner:make_error(S, unclosed_block_comment)};

                {some, <<"/"/utf8>>} ->
                    case kdleam@scanner:peek_next(S) of
                        {some, <<"*"/utf8>>} ->
                            {_, S1} = kdleam@scanner:advance(S),
                            {_, S2} = kdleam@scanner:advance(S1),
                            skip_block_comment_depth(S2, Depth + 1);

                        _ ->
                            {_, Next} = kdleam@scanner:advance(S),
                            skip_block_comment_depth(Next, Depth)
                    end;

                {some, <<"*"/utf8>>} ->
                    case kdleam@scanner:peek_next(S) of
                        {some, <<"/"/utf8>>} ->
                            {_, S1@1} = kdleam@scanner:advance(S),
                            {_, S2@1} = kdleam@scanner:advance(S1@1),
                            skip_block_comment_depth(S2@1, Depth - 1);

                        _ ->
                            {_, Next@1} = kdleam@scanner:advance(S),
                            skip_block_comment_depth(Next@1, Depth)
                    end;

                {some, _} ->
                    {_, Next@2} = kdleam@scanner:advance(S),
                    skip_block_comment_depth(Next@2, Depth)
            end
    end.

-file("src/kdleam/comment.gleam", 22).
?DOC(false).
-spec skip_block_comment(kdleam@scanner:scanner()) -> {ok,
        kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_block_comment(S) ->
    skip_block_comment_depth(S, 1).

-file("src/kdleam/comment.gleam", 68).
?DOC(false).
-spec skip_ws(kdleam@scanner:scanner()) -> {ok, kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_ws(S) ->
    case kdleam@scanner:peek(S) of
        {some, Ch} ->
            case kdleam@scanner:is_unicode_space(Ch) of
                true ->
                    {_, Next} = kdleam@scanner:advance(S),
                    skip_ws(Next);

                false ->
                    case (Ch =:= <<"*"/utf8>>) andalso (kdleam@scanner:peek_next(
                        S
                    )
                    =:= {some, <<"/"/utf8>>}) of
                        true ->
                            {error,
                                kdleam@scanner:make_error(
                                    S,
                                    unmatched_block_comment_end
                                )};

                        false ->
                            case (Ch =:= <<"/"/utf8>>) andalso (kdleam@scanner:peek_next(
                                S
                            )
                            =:= {some, <<"*"/utf8>>}) of
                                true ->
                                    {_, S1} = kdleam@scanner:advance(S),
                                    {_, S2} = kdleam@scanner:advance(S1),
                                    gleam@result:'try'(
                                        skip_block_comment(S2),
                                        fun(S3) -> skip_ws(S3) end
                                    );

                                false ->
                                    {ok, S}
                            end
                    end
            end;

        _ ->
            {ok, S}
    end.

-file("src/kdleam/comment.gleam", 177).
?DOC(false).
-spec try_skip_escline(kdleam@scanner:scanner()) -> {ok,
        {boolean(), kdleam@scanner:scanner()}} |
    {error, kdleam@error:kdl_error()}.
try_skip_escline(S) ->
    case kdleam@scanner:peek(S) of
        {some, <<"\\"/utf8>>} ->
            {_, S1} = kdleam@scanner:advance(S),
            gleam@result:'try'(
                skip_ws(S1),
                fun(S2) -> case kdleam@scanner:peek(S2) of
                        {some, <<"/"/utf8>>} ->
                            case kdleam@scanner:peek_next(S2) of
                                {some, <<"/"/utf8>>} ->
                                    {_, S3} = kdleam@scanner:advance(S2),
                                    {_, S4} = kdleam@scanner:advance(S3),
                                    gleam@result:'try'(
                                        skip_single_line_comment(S4),
                                        fun(S5) ->
                                            {_, S6} = kdleam@scanner:consume_newline(
                                                S5
                                            ),
                                            {ok, {true, S6}}
                                        end
                                    );

                                _ ->
                                    {ok, {false, S}}
                            end;

                        {some, Ch} ->
                            case kdleam@scanner:is_newline(Ch) of
                                true ->
                                    {_, S3@1} = kdleam@scanner:consume_newline(
                                        S2
                                    ),
                                    {ok, {true, S3@1}};

                                false ->
                                    {ok, {false, S}}
                            end;

                        none ->
                            {ok, {true, S2}}
                    end end
            );

        _ ->
            {ok, {false, S}}
    end.

-file("src/kdleam/comment.gleam", 114).
?DOC(false).
-spec skip_line_space_checked(kdleam@scanner:scanner(), binary()) -> {ok,
        kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_line_space_checked(S, Ch) ->
    case kdleam@scanner:is_newline(Ch) of
        true ->
            {_, Next} = kdleam@scanner:consume_newline(S),
            skip_line_space(Next);

        false ->
            case (Ch =:= <<"/"/utf8>>) andalso (kdleam@scanner:peek_next(S) =:= {some,
                <<"/"/utf8>>}) of
                true ->
                    {_, S1} = kdleam@scanner:advance(S),
                    {_, S2} = kdleam@scanner:advance(S1),
                    gleam@result:'try'(
                        skip_single_line_comment(S2),
                        fun(S3) ->
                            {_, S4} = kdleam@scanner:consume_newline(S3),
                            skip_line_space(S4)
                        end
                    );

                false ->
                    case (Ch =:= <<"/"/utf8>>) andalso (kdleam@scanner:peek_next(
                        S
                    )
                    =:= {some, <<"*"/utf8>>}) of
                        true ->
                            {_, S1@1} = kdleam@scanner:advance(S),
                            {_, S2@1} = kdleam@scanner:advance(S1@1),
                            gleam@result:'try'(
                                skip_block_comment(S2@1),
                                fun(S3@1) -> skip_line_space(S3@1) end
                            );

                        false ->
                            case Ch =:= <<"\\"/utf8>> of
                                true ->
                                    gleam@result:'try'(
                                        try_skip_escline(S),
                                        fun(Esc) -> case Esc of
                                                {true, Next@1} ->
                                                    skip_line_space(Next@1);

                                                {false, _} ->
                                                    {ok, S}
                                            end end
                                    );

                                false ->
                                    {ok, S}
                            end
                    end
            end
    end.

-file("src/kdleam/comment.gleam", 96).
?DOC(false).
-spec skip_line_space(kdleam@scanner:scanner()) -> {ok,
        kdleam@scanner:scanner()} |
    {error, kdleam@error:kdl_error()}.
skip_line_space(S) ->
    case kdleam@scanner:peek(S) of
        {some, Ch} ->
            case kdleam@scanner:is_unicode_space(Ch) of
                true ->
                    {_, Next} = kdleam@scanner:advance(S),
                    skip_line_space(Next);

                false ->
                    case (Ch =:= <<"*"/utf8>>) andalso (kdleam@scanner:peek_next(
                        S
                    )
                    =:= {some, <<"/"/utf8>>}) of
                        true ->
                            {error,
                                kdleam@scanner:make_error(
                                    S,
                                    unmatched_block_comment_end
                                )};

                        false ->
                            skip_line_space_checked(S, Ch)
                    end
            end;

        _ ->
            {ok, S}
    end.

-file("src/kdleam/comment.gleam", 166).
?DOC(false).
-spec skip_esclines(kdleam@scanner:scanner(), boolean()) -> {ok,
        {boolean(), kdleam@scanner:scanner()}} |
    {error, kdleam@error:kdl_error()}.
skip_esclines(S, Had) ->
    gleam@result:'try'(try_skip_escline(S), fun(Result) -> case Result of
                {true, Next} ->
                    gleam@result:'try'(
                        skip_ws(Next),
                        fun(After_ws) -> skip_esclines(After_ws, true) end
                    );

                {false, _} ->
                    {ok, {Had, S}}
            end end).

-file("src/kdleam/comment.gleam", 157).
?DOC(false).
-spec skip_node_space(kdleam@scanner:scanner()) -> {ok,
        {boolean(), kdleam@scanner:scanner()}} |
    {error, kdleam@error:kdl_error()}.
skip_node_space(S) ->
    Start = erlang:element(4, S),
    gleam@result:'try'(
        skip_ws(S),
        fun(After_ws) ->
            Had_ws = erlang:element(4, After_ws) /= Start,
            gleam@result:'try'(
                skip_esclines(After_ws, false),
                fun(Result) ->
                    {Had_escline, Final} = Result,
                    {ok, {Had_ws orelse Had_escline, Final}}
                end
            )
        end
    ).