-module(gwr@parser@value_parser).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([parse_unsigned_leb128_integer/1, parse_signed_leb128_integer/1, parse_uninterpreted_leb128_integer/1, parse_name/1]).

-spec parse_unsigned_leb128_integer(gwr@parser@binary_reader:binary_reader()) -> {ok,
        {gwr@parser@binary_reader:binary_reader(), integer()}} |
    {error, binary()}.
parse_unsigned_leb128_integer(Reader) ->
    gleam@result:'try'(
        gwr@parser@binary_reader:get_remaining(Reader),
        fun(Remaining_data) ->
            gleam@result:'try'(
                gleb128:fast_decode_unsigned(Remaining_data),
                fun(_use0) ->
                    {Result, Bytes_read} = _use0,
                    Reader@1 = gwr@parser@binary_reader:advance(
                        Reader,
                        Bytes_read
                    ),
                    {ok, {Reader@1, Result}}
                end
            )
        end
    ).

-spec parse_signed_leb128_integer(gwr@parser@binary_reader:binary_reader()) -> {ok,
        {gwr@parser@binary_reader:binary_reader(), integer()}} |
    {error, binary()}.
parse_signed_leb128_integer(Reader) ->
    gleam@result:'try'(
        gwr@parser@binary_reader:get_remaining(Reader),
        fun(Remaining_data) ->
            gleam@result:'try'(
                gleb128:fast_decode_signed(Remaining_data),
                fun(_use0) ->
                    {Result, Bytes_read} = _use0,
                    Reader@1 = gwr@parser@binary_reader:advance(
                        Reader,
                        Bytes_read
                    ),
                    {ok, {Reader@1, Result}}
                end
            )
        end
    ).

-spec parse_uninterpreted_leb128_integer(
    gwr@parser@binary_reader:binary_reader()
) -> {ok, {gwr@parser@binary_reader:binary_reader(), integer()}} |
    {error, binary()}.
parse_uninterpreted_leb128_integer(Reader) ->
    parse_signed_leb128_integer(Reader).

-spec parse_name(gwr@parser@binary_reader:binary_reader()) -> {ok,
        {gwr@parser@binary_reader:binary_reader(), binary()}} |
    {error, binary()}.
parse_name(Reader) ->
    gleam@result:'try'(
        parse_unsigned_leb128_integer(Reader),
        fun(_use0) ->
            {Reader@1, Name_length} = _use0,
            gleam@result:'try'(
                gwr@parser@binary_reader:get_remaining(Reader@1),
                fun(Remaining_data) ->
                    Remaining_data_length = erlang:byte_size(Remaining_data),
                    gleam@bool:guard(
                        Name_length > Remaining_data_length,
                        {error,
                            <<<<<<<<"gwr/parser/value_parser.parse_name: unexpected end of the name's data. Expected = "/utf8,
                                            (gleam@int:to_string(Name_length))/binary>>/binary,
                                        " bytes but got = "/utf8>>/binary,
                                    (gleam@int:to_string(Remaining_data_length))/binary>>/binary,
                                " bytes"/utf8>>},
                        fun() ->
                            gleam@result:'try'(
                                case gwr@parser@binary_reader:read(
                                    Reader@1,
                                    Name_length
                                ) of
                                    {ok, {Reader@2, Name_data}} ->
                                        case gleam@bit_array:to_string(
                                            Name_data
                                        ) of
                                            {ok, Name_string} ->
                                                {ok, {Reader@2, Name_string}};

                                            {error, _} ->
                                                {error,
                                                    <<"gwr/parser/value_parser.parse_name: invalid UTF-8 name data"/utf8>>}
                                        end;

                                    {error, Reason} ->
                                        {error,
                                            <<"gwr/parser/value_parser.parse_name: couldn't parse name: "/utf8,
                                                Reason/binary>>}
                                end,
                                fun(_use0@1) ->
                                    {Reader@3, Result} = _use0@1,
                                    {ok, {Reader@3, Result}}
                                end
                            )
                        end
                    )
                end
            )
        end
    ).