-module(handles@internal@parser).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/handles/internal/parser.gleam").
-export([run/1]).
-export_type([a_s_t/0, parse_result/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.

?MODULEDOC(false).

-type a_s_t() :: {constant, integer(), binary()} |
    {property, integer(), list(binary())} |
    {partial, integer(), binary(), list(binary())} |
    {block,
        integer(),
        integer(),
        handles@internal@block:kind(),
        list(binary()),
        list(a_s_t())}.

-type parse_result() :: {e_o_f, list(a_s_t())} |
    {block_end,
        integer(),
        handles@internal@block:kind(),
        list(a_s_t()),
        list(handles@internal@tokenizer:token())}.

-file("src/handles/internal/parser.gleam", 30).
?DOC(false).
-spec parse(list(a_s_t()), list(handles@internal@tokenizer:token())) -> {ok,
        parse_result()} |
    {error, handles@error:tokenizer_error()}.
parse(Ast, Tokens) ->
    case Tokens of
        [] ->
            {ok, {e_o_f, lists:reverse(Ast)}};

        [{block_end, Index, Kind} | Tail] ->
            {ok, {block_end, Index, Kind, lists:reverse(Ast), Tail}};

        [{constant, Index@1, Value} | Tail@1] ->
            _pipe = [{constant, Index@1, Value} | Ast],
            parse(_pipe, Tail@1);

        [{property, Index@2, Path} | Tail@2] ->
            _pipe@1 = [{property, Index@2, Path} | Ast],
            parse(_pipe@1, Tail@2);

        [{partial, Index@3, Id, Value@1} | Tail@3] ->
            _pipe@2 = [{partial, Index@3, Id, Value@1} | Ast],
            parse(_pipe@2, Tail@3);

        [{block_start, Start_index, Start_kind, Path@1} | Tail@4] ->
            case parse([], Tail@4) of
                {error, Err} ->
                    {error, Err};

                {ok, {e_o_f, _}} ->
                    _pipe@3 = Start_index,
                    _pipe@4 = {unbalanced_block, _pipe@3},
                    {error, _pipe@4};

                {ok, {block_end, End_index, End_kind, Children, Rest}} when End_kind =:= Start_kind ->
                    _pipe@5 = [{block,
                            Start_index,
                            End_index,
                            Start_kind,
                            Path@1,
                            Children} |
                        Ast],
                    parse(_pipe@5, Rest);

                {ok, {block_end, Index@4, _, _, _}} ->
                    _pipe@6 = Index@4,
                    _pipe@7 = {unexpected_block_end, _pipe@6},
                    {error, _pipe@7}
            end
    end.

-file("src/handles/internal/parser.gleam", 69).
?DOC(false).
-spec run(list(handles@internal@tokenizer:token())) -> {ok, list(a_s_t())} |
    {error, handles@error:tokenizer_error()}.
run(Tokens) ->
    _pipe = parse([], Tokens),
    gleam@result:'try'(_pipe, fun(It) -> case It of
                {e_o_f, Ast} ->
                    {ok, Ast};

                {block_end, Index, _, _, _} ->
                    _pipe@1 = Index,
                    _pipe@2 = {unexpected_block_end, _pipe@1},
                    {error, _pipe@2}
            end end).