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Anonymous committed 1d62690

Removing dead file

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File apps/erlang_js/src/js_json.erl

-%% @author Bob Ippolito <bob@mochimedia.com>
-%% @author Kevin A. smith <kevin@hypotheticalabs.com>
-%% @copyright 2007 Mochi Media, Inc.
-%% @copyright 2009 Basho Technologies, Inc.
-
-%% @doc Fork of the original mochijson2 JSON encoder. This version
-%%      is functionally equivalent in all ways except one. js_json
-%%      has the ability to transparently detect proplists and
-%%      encode them as JSON structs.
-
--module(js_json).
--author('bob@mochimedia.com').
--author('kevin@hypotheticalabs.com').
--export([encoder/1, encode/1]).
--export([decoder/1, decode/1]).
--export([test/0]).
-
-% This is a macro to placate syntax highlighters..
--define(Q, $\").
--define(ADV_COL(S, N), S#decoder{offset=N+S#decoder.offset,
-                                 column=N+S#decoder.column}).
--define(INC_COL(S), S#decoder{offset=1+S#decoder.offset,
-                              column=1+S#decoder.column}).
--define(INC_LINE(S), S#decoder{offset=1+S#decoder.offset,
-                               column=1,
-                               line=1+S#decoder.line}).
--define(INC_CHAR(S, C),
-        case C of
-            $\n ->
-                S#decoder{column=1,
-                          line=1+S#decoder.line,
-                          offset=1+S#decoder.offset};
-            _ ->
-                S#decoder{column=1+S#decoder.column,
-                          offset=1+S#decoder.offset}
-        end).
--define(IS_WHITESPACE(C),
-        (C =:= $\s orelse C =:= $\t orelse C =:= $\r orelse C =:= $\n)).
-
-%% @type iolist() = [char() | binary() | iolist()]
-%% @type iodata() = iolist() | binary()
-%% @type json_string() = atom | binary()
-%% @type json_number() = integer() | float()
-%% @type json_array() = [json_term()]
-%% @type json_object() = {struct, [{json_string(), json_term()}]}
-%% @type json_term() = json_string() | json_number() | json_array() |
-%%                     json_object()
-
--record(encoder, {handler=null,
-                  utf8=false}).
-
--record(decoder, {object_hook=null,
-                  offset=0,
-                  line=1,
-                  column=1,
-                  state=null}).
-
-%% @spec encoder([encoder_option()]) -> function()
-%% @doc Create an encoder/1 with the given options.
-%% @type encoder_option() = handler_option() | utf8_option()
-%% @type utf8_option() = boolean(). Emit unicode as utf8 (default - false)
-encoder(Options) ->
-    State = parse_encoder_options(Options, #encoder{}),
-    fun (O) -> json_encode(O, State) end.
-
-%% @spec encode(json_term()) -> iolist()
-%% @doc Encode the given as JSON to an iolist.
-encode(Any) ->
-    json_encode(Any, #encoder{}).
-
-%% @spec decoder([decoder_option()]) -> function()
-%% @doc Create a decoder/1 with the given options.
-decoder(Options) ->
-    State = parse_decoder_options(Options, #decoder{}),
-    fun (O) -> json_decode(O, State) end.
-
-%% @spec decode(iolist()) -> json_term()
-%% @doc Decode the given iolist to Erlang terms.
-decode(S) ->
-    json_decode(S, #decoder{}).
-
-test() ->
-    test_all().
-
-%% Internal API
-
-parse_encoder_options([], State) ->
-    State;
-parse_encoder_options([{handler, Handler} | Rest], State) ->
-    parse_encoder_options(Rest, State#encoder{handler=Handler});
-parse_encoder_options([{utf8, Switch} | Rest], State) ->
-    parse_encoder_options(Rest, State#encoder{utf8=Switch}).
-
-parse_decoder_options([], State) ->
-    State;
-parse_decoder_options([{object_hook, Hook} | Rest], State) ->
-    parse_decoder_options(Rest, State#decoder{object_hook=Hook}).
-
-json_encode(true, _State) ->
-    <<"true">>;
-json_encode(false, _State) ->
-    <<"false">>;
-json_encode(null, _State) ->
-    <<"null">>;
-json_encode(I, _State) when is_integer(I) andalso I >= -2147483648 andalso I =< 2147483647 ->
-    %% Anything outside of 32-bit integers should be encoded as a float
-    integer_to_list(I);
-json_encode(I, _State) when is_integer(I) ->
-    js_mochinum:digits(float(I));
-json_encode(F, _State) when is_float(F) ->
-    js_mochinum:digits(F);
-json_encode(S, State) when is_binary(S); is_atom(S) ->
-    json_encode_string(S, State);
-json_encode(Array, State) when is_list(Array) ->
-    case is_structable(Array) of
-        true ->
-            json_encode({struct, Array}, State);
-        false ->
-            json_encode_array(Array, State)
-    end;
-json_encode({struct, Props}, State) when is_list(Props) ->
-    json_encode_proplist(Props, State);
-json_encode(Bad, #encoder{handler=null}) ->
-    exit({json_encode, {bad_term, Bad}});
-json_encode(Bad, State=#encoder{handler=Handler}) ->
-    json_encode(Handler(Bad), State).
-
-json_encode_array([], _State) ->
-    <<"[]">>;
-json_encode_array(L, State) ->
-    F = fun (O, Acc) ->
-                [$,, json_encode(O, State) | Acc]
-        end,
-    [$, | Acc1] = lists:foldl(F, "[", L),
-    lists:reverse([$\] | Acc1]).
-
-json_encode_proplist([], _State) ->
-    <<"{}">>;
-json_encode_proplist(Props, State) ->
-    F = fun ({K, V}, Acc) ->
-                KS = json_encode_string(K, State),
-                VS = json_encode(V, State),
-                [$,, VS, $:, KS | Acc]
-        end,
-    [$, | Acc1] = lists:foldl(F, "{", Props),
-    lists:reverse([$\} | Acc1]).
-
-json_encode_string(A, State) when is_atom(A) ->
-    L = atom_to_list(A),
-    case json_string_is_safe(L) of
-        true ->
-            [?Q, L, ?Q];
-        false ->
-            json_encode_string_unicode(xmerl_ucs:from_utf8(L), State, [?Q])
-    end;
-json_encode_string(B, State) when is_binary(B) ->
-    case json_bin_is_safe(B) of
-        true ->
-            [?Q, B, ?Q];
-        false ->
-            json_encode_string_unicode(xmerl_ucs:from_utf8(B), State, [?Q])
-    end;
-json_encode_string(I, _State) when is_integer(I) ->
-    [?Q, integer_to_list(I), ?Q];
-json_encode_string(L, State) when is_list(L) ->
-    case json_string_is_safe(L) of
-        true ->
-            [?Q, L, ?Q];
-        false ->
-            json_encode_string_unicode(L, State, [?Q])
-    end.
-
-json_string_is_safe([]) ->
-    true;
-json_string_is_safe([C | Rest]) ->
-    case C of
-        ?Q ->
-            false;
-        $\\ ->
-            false;
-        $\b ->
-            false;
-        $\f ->
-            false;
-        $\n ->
-            false;
-        $\r ->
-            false;
-        $\t ->
-            false;
-        C when C >= 0, C < $\s; C >= 16#7f, C =< 16#10FFFF ->
-            false;
-        C when C < 16#7f ->
-            json_string_is_safe(Rest);
-        _ ->
-            false
-    end.
-
-json_bin_is_safe(<<>>) ->
-    true;
-json_bin_is_safe(<<C, Rest/binary>>) ->
-    case C of
-        ?Q ->
-            false;
-        $\\ ->
-            false;
-        $\b ->
-            false;
-        $\f ->
-            false;
-        $\n ->
-            false;
-        $\r ->
-            false;
-        $\t ->
-            false;
-        C when C >= 0, C < $\s; C >= 16#7f, C =< 16#10FFFF ->
-            false;
-        C when C < 16#7f ->
-            json_bin_is_safe(Rest);
-        _ ->
-            false
-    end.
-
-json_encode_string_unicode([], _State, Acc) ->
-    lists:reverse([$\" | Acc]);
-json_encode_string_unicode([C | Cs], State, Acc) ->
-    Acc1 = case C of
-               ?Q ->
-                   [?Q, $\\ | Acc];
-               %% Escaping solidus is only useful when trying to protect
-               %% against "</script>" injection attacks which are only
-               %% possible when JSON is inserted into a HTML document
-               %% in-line. mochijson2 does not protect you from this, so
-               %% if you do insert directly into HTML then you need to
-               %% uncomment the following case or escape the output of encode.
-               %%
-               %% $/ ->
-               %%    [$/, $\\ | Acc];
-               %%
-               $\\ ->
-                   [$\\, $\\ | Acc];
-               $\b ->
-                   [$b, $\\ | Acc];
-               $\f ->
-                   [$f, $\\ | Acc];
-               $\n ->
-                   [$n, $\\ | Acc];
-               $\r ->
-                   [$r, $\\ | Acc];
-               $\t ->
-                   [$t, $\\ | Acc];
-               C when C >= 0, C < $\s ->
-                   [unihex(C) | Acc];
-               C when C >= 16#7f, C =< 16#10FFFF, State#encoder.utf8 ->
-                   [xmerl_ucs:to_utf8(C) | Acc];
-               C when  C >= 16#7f, C =< 16#10FFFF, not State#encoder.utf8 ->
-                   [unihex(C) | Acc];
-               C when C < 16#7f ->
-                   [C | Acc];
-               _ ->
-                   exit({json_encode, {bad_char, C}})
-           end,
-    json_encode_string_unicode(Cs, State, Acc1).
-
-hexdigit(C) when C >= 0, C =< 9 ->
-    C + $0;
-hexdigit(C) when C =< 15 ->
-    C + $a - 10.
-
-unihex(C) when C < 16#10000 ->
-    <<D3:4, D2:4, D1:4, D0:4>> = <<C:16>>,
-    Digits = [hexdigit(D) || D <- [D3, D2, D1, D0]],
-    [$\\, $u | Digits];
-unihex(C) when C =< 16#10FFFF ->
-    N = C - 16#10000,
-    S1 = 16#d800 bor ((N bsr 10) band 16#3ff),
-    S2 = 16#dc00 bor (N band 16#3ff),
-    [unihex(S1), unihex(S2)].
-
-json_decode(L, S) when is_list(L) ->
-    json_decode(iolist_to_binary(L), S);
-json_decode(B, S) ->
-    {Res, S1} = decode1(B, S),
-    {eof, _} = tokenize(B, S1#decoder{state=trim}),
-    Res.
-
-decode1(B, S=#decoder{state=null}) ->
-    case tokenize(B, S#decoder{state=any}) of
-        {{const, C}, S1} ->
-            {C, S1};
-        {start_array, S1} ->
-            decode_array(B, S1);
-        {start_object, S1} ->
-            decode_object(B, S1)
-    end.
-
-make_object(V, #decoder{object_hook=null}) ->
-    V;
-make_object(V, #decoder{object_hook=Hook}) ->
-    Hook(V).
-
-decode_object(B, S) ->
-    decode_object(B, S#decoder{state=key}, []).
-
-decode_object(B, S=#decoder{state=key}, Acc) ->
-    case tokenize(B, S) of
-        {end_object, S1} ->
-            V = make_object({struct, lists:reverse(Acc)}, S1),
-            {V, S1#decoder{state=null}};
-        {{const, K}, S1} ->
-            {colon, S2} = tokenize(B, S1),
-            {V, S3} = decode1(B, S2#decoder{state=null}),
-            decode_object(B, S3#decoder{state=comma}, [{K, V} | Acc])
-    end;
-decode_object(B, S=#decoder{state=comma}, Acc) ->
-    case tokenize(B, S) of
-        {end_object, S1} ->
-            V = make_object({struct, lists:reverse(Acc)}, S1),
-            {V, S1#decoder{state=null}};
-        {comma, S1} ->
-            decode_object(B, S1#decoder{state=key}, Acc)
-    end.
-
-decode_array(B, S) ->
-    decode_array(B, S#decoder{state=any}, []).
-
-decode_array(B, S=#decoder{state=any}, Acc) ->
-    case tokenize(B, S) of
-        {end_array, S1} ->
-            {lists:reverse(Acc), S1#decoder{state=null}};
-        {start_array, S1} ->
-            {Array, S2} = decode_array(B, S1),
-            decode_array(B, S2#decoder{state=comma}, [Array | Acc]);
-        {start_object, S1} ->
-            {Array, S2} = decode_object(B, S1),
-            decode_array(B, S2#decoder{state=comma}, [Array | Acc]);
-        {{const, Const}, S1} ->
-            decode_array(B, S1#decoder{state=comma}, [Const | Acc])
-    end;
-decode_array(B, S=#decoder{state=comma}, Acc) ->
-    case tokenize(B, S) of
-        {end_array, S1} ->
-            {lists:reverse(Acc), S1#decoder{state=null}};
-        {comma, S1} ->
-            decode_array(B, S1#decoder{state=any}, Acc)
-    end.
-
-tokenize_string(B, S=#decoder{offset=O}) ->
-    case tokenize_string_fast(B, O) of
-        {escape, O1} ->
-            Length = O1 - O,
-            S1 = ?ADV_COL(S, Length),
-            <<_:O/binary, Head:Length/binary, _/binary>> = B,
-            tokenize_string(B, S1, lists:reverse(binary_to_list(Head)));
-        O1 ->
-            Length = O1 - O,
-            <<_:O/binary, String:Length/binary, ?Q, _/binary>> = B,
-            {{const, String}, ?ADV_COL(S, Length + 1)}
-    end.
-
-tokenize_string_fast(B, O) ->
-    case B of
-        <<_:O/binary, ?Q, _/binary>> ->
-            O;
-        <<_:O/binary, C, _/binary>> when C =/= $\\ ->
-            tokenize_string_fast(B, 1 + O);
-        _ ->
-            {escape, O}
-    end.
-
-tokenize_string(B, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, ?Q, _/binary>> ->
-            {{const, iolist_to_binary(lists:reverse(Acc))}, ?INC_COL(S)};
-        <<_:O/binary, "\\\"", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\" | Acc]);
-        <<_:O/binary, "\\\\", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\\ | Acc]);
-        <<_:O/binary, "\\/", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$/ | Acc]);
-        <<_:O/binary, "\\b", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\b | Acc]);
-        <<_:O/binary, "\\f", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\f | Acc]);
-        <<_:O/binary, "\\n", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\n | Acc]);
-        <<_:O/binary, "\\r", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\r | Acc]);
-        <<_:O/binary, "\\t", _/binary>> ->
-            tokenize_string(B, ?ADV_COL(S, 2), [$\t | Acc]);
-        <<_:O/binary, "\\u", C3, C2, C1, C0, Rest/binary>> ->
-            C = erlang:list_to_integer([C3, C2, C1, C0], 16),
-            if C > 16#D7FF, C < 16#DC00 ->
-                %% coalesce UTF-16 surrogate pair
-                <<"\\u", D3, D2, D1, D0, _/binary>> = Rest,
-                D = erlang:list_to_integer([D3,D2,D1,D0], 16),
-                [CodePoint] = xmerl_ucs:from_utf16be(<<C:16/big-unsigned-integer,
-                    D:16/big-unsigned-integer>>),
-                Acc1 = lists:reverse(xmerl_ucs:to_utf8(CodePoint), Acc),
-                tokenize_string(B, ?ADV_COL(S, 12), Acc1);
-            true ->
-                Acc1 = lists:reverse(xmerl_ucs:to_utf8(C), Acc),
-                tokenize_string(B, ?ADV_COL(S, 6), Acc1)
-            end;
-        <<_:O/binary, C, _/binary>> ->
-            tokenize_string(B, ?INC_CHAR(S, C), [C | Acc])
-    end.
-
-tokenize_number(B, S) ->
-    case tokenize_number(B, sign, S, []) of
-        {{int, Int}, S1} ->
-            {{const, list_to_integer(Int)}, S1};
-        {{float, Float}, S1} ->
-            {{const, list_to_float(Float)}, S1}
-    end.
-
-tokenize_number(B, sign, S=#decoder{offset=O}, []) ->
-    case B of
-        <<_:O/binary, $-, _/binary>> ->
-            tokenize_number(B, int, ?INC_COL(S), [$-]);
-        _ ->
-            tokenize_number(B, int, S, [])
-    end;
-tokenize_number(B, int, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, $0, _/binary>> ->
-            tokenize_number(B, frac, ?INC_COL(S), [$0 | Acc]);
-        <<_:O/binary, C, _/binary>> when C >= $1 andalso C =< $9 ->
-            tokenize_number(B, int1, ?INC_COL(S), [C | Acc])
-    end;
-tokenize_number(B, int1, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when C >= $0 andalso C =< $9 ->
-            tokenize_number(B, int1, ?INC_COL(S), [C | Acc]);
-        _ ->
-            tokenize_number(B, frac, S, Acc)
-    end;
-tokenize_number(B, frac, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, $., C, _/binary>> when C >= $0, C =< $9 ->
-            tokenize_number(B, frac1, ?ADV_COL(S, 2), [C, $. | Acc]);
-        <<_:O/binary, E, _/binary>> when E =:= $e orelse E =:= $E ->
-            tokenize_number(B, esign, ?INC_COL(S), [$e, $0, $. | Acc]);
-        _ ->
-            {{int, lists:reverse(Acc)}, S}
-    end;
-tokenize_number(B, frac1, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when C >= $0 andalso C =< $9 ->
-            tokenize_number(B, frac1, ?INC_COL(S), [C | Acc]);
-        <<_:O/binary, E, _/binary>> when E =:= $e orelse E =:= $E ->
-            tokenize_number(B, esign, ?INC_COL(S), [$e | Acc]);
-        _ ->
-            {{float, lists:reverse(Acc)}, S}
-    end;
-tokenize_number(B, esign, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when C =:= $- orelse C=:= $+ ->
-            tokenize_number(B, eint, ?INC_COL(S), [C | Acc]);
-        _ ->
-            tokenize_number(B, eint, S, Acc)
-    end;
-tokenize_number(B, eint, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when C >= $0 andalso C =< $9 ->
-            tokenize_number(B, eint1, ?INC_COL(S), [C | Acc])
-    end;
-tokenize_number(B, eint1, S=#decoder{offset=O}, Acc) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when C >= $0 andalso C =< $9 ->
-            tokenize_number(B, eint1, ?INC_COL(S), [C | Acc]);
-        _ ->
-            {{float, lists:reverse(Acc)}, S}
-    end.
-
-tokenize(B, S=#decoder{offset=O}) ->
-    case B of
-        <<_:O/binary, C, _/binary>> when ?IS_WHITESPACE(C) ->
-            tokenize(B, ?INC_CHAR(S, C));
-        <<_:O/binary, "{", _/binary>> ->
-            {start_object, ?INC_COL(S)};
-        <<_:O/binary, "}", _/binary>> ->
-            {end_object, ?INC_COL(S)};
-        <<_:O/binary, "[", _/binary>> ->
-            {start_array, ?INC_COL(S)};
-        <<_:O/binary, "]", _/binary>> ->
-            {end_array, ?INC_COL(S)};
-        <<_:O/binary, ",", _/binary>> ->
-            {comma, ?INC_COL(S)};
-        <<_:O/binary, ":", _/binary>> ->
-            {colon, ?INC_COL(S)};
-        <<_:O/binary, "null", _/binary>> ->
-            {{const, null}, ?ADV_COL(S, 4)};
-        <<_:O/binary, "true", _/binary>> ->
-            {{const, true}, ?ADV_COL(S, 4)};
-        <<_:O/binary, "false", _/binary>> ->
-            {{const, false}, ?ADV_COL(S, 5)};
-        <<_:O/binary, "\"", _/binary>> ->
-            tokenize_string(B, ?INC_COL(S));
-        <<_:O/binary, C, _/binary>> when (C >= $0 andalso C =< $9)
-                                         orelse C =:= $- ->
-            tokenize_number(B, S);
-        <<_:O/binary>> ->
-            trim = S#decoder.state,
-            {eof, S}
-    end.
-
-is_structable([]) ->
-    false;
-is_structable([H|_]) ->
-    is_tuple(H) andalso size(H) == 2 andalso element(1,H) /= struct.
-
-%% testing constructs borrowed from the Yaws JSON implementation.
-
-%% Create an object from a list of Key/Value pairs.
-
-obj_new() ->
-    {struct, []}.
-
-is_obj({struct, Props}) ->
-    F = fun ({K, _}) when is_binary(K) ->
-                true;
-            (_) ->
-                false
-        end,
-    lists:all(F, Props).
-
-obj_from_list(Props) ->
-    Obj = {struct, Props},
-    case is_obj(Obj) of
-        true -> Obj;
-        false -> exit({json_bad_object, Obj})
-    end.
-
-%% Test for equivalence of Erlang terms.
-%% Due to arbitrary order of construction, equivalent objects might
-%% compare unequal as erlang terms, so we need to carefully recurse
-%% through aggregates (tuples and objects).
-
-equiv({struct, Props1}, {struct, Props2}) ->
-    equiv_object(Props1, Props2);
-equiv(L1, L2) when is_list(L1), is_list(L2) ->
-    equiv_list(L1, L2);
-equiv(N1, N2) when is_number(N1), is_number(N2) -> N1 == N2;
-equiv(B1, B2) when is_binary(B1), is_binary(B2) -> B1 == B2;
-equiv(true, true) -> true;
-equiv(false, false) -> true;
-equiv(null, null) -> true.
-
-%% Object representation and traversal order is unknown.
-%% Use the sledgehammer and sort property lists.
-
-equiv_object(Props1, Props2) ->
-    L1 = lists:keysort(1, Props1),
-    L2 = lists:keysort(1, Props2),
-    Pairs = lists:zip(L1, L2),
-    true = lists:all(fun({{K1, V1}, {K2, V2}}) ->
-                             equiv(K1, K2) and equiv(V1, V2)
-                     end, Pairs).
-
-%% Recursively compare tuple elements for equivalence.
-
-equiv_list([], []) ->
-    true;
-equiv_list([V1 | L1], [V2 | L2]) ->
-    case equiv(V1, V2) of
-        true ->
-            equiv_list(L1, L2);
-        false ->
-            false
-    end.
-
-test_all() ->
-    [1199344435545.0, 1] = decode(<<"[1199344435545.0,1]">>),
-    <<16#F0,16#9D,16#9C,16#95>> = decode([34,"\\ud835","\\udf15",34]),
-    test_encoder_utf8(),
-    test_one(e2j_test_vec(utf8), 1).
-
-test_one([], _N) ->
-    %% io:format("~p tests passed~n", [N-1]),
-    ok;
-test_one([{E, J} | Rest], N) ->
-    %% io:format("[~p] ~p ~p~n", [N, E, J]),
-    true = equiv(E, decode(J)),
-    true = equiv(E, decode(encode(E))),
-    test_one(Rest, 1+N).
-
-e2j_test_vec(utf8) ->
-    [
-     {1, "1"},
-     {3.1416, "3.14160"}, %% text representation may truncate, trail zeroes
-     {-1, "-1"},
-     {-3.1416, "-3.14160"},
-     {12.0e10, "1.20000e+11"},
-     {1.234E+10, "1.23400e+10"},
-     {-1.234E-10, "-1.23400e-10"},
-     {10.0, "1.0e+01"},
-     {123.456, "1.23456E+2"},
-     {10.0, "1e1"},
-     {<<"foo">>, "\"foo\""},
-     {<<"foo", 5, "bar">>, "\"foo\\u0005bar\""},
-     {<<"">>, "\"\""},
-     {<<"\n\n\n">>, "\"\\n\\n\\n\""},
-     {<<"\" \b\f\r\n\t\"">>, "\"\\\" \\b\\f\\r\\n\\t\\\"\""},
-     {obj_new(), "{}"},
-     {obj_from_list([{<<"foo">>, <<"bar">>}]), "{\"foo\":\"bar\"}"},
-     {obj_from_list([{<<"foo">>, <<"bar">>}, {<<"baz">>, 123}]),
-      "{\"foo\":\"bar\",\"baz\":123}"},
-     {[], "[]"},
-     {[[]], "[[]]"},
-     {[1, <<"foo">>], "[1,\"foo\"]"},
-
-     %% json array in a json object
-     {obj_from_list([{<<"foo">>, [123]}]),
-      "{\"foo\":[123]}"},
-
-     %% json object in a json object
-     {obj_from_list([{<<"foo">>, obj_from_list([{<<"bar">>, true}])}]),
-      "{\"foo\":{\"bar\":true}}"},
-
-     %% fold evaluation order
-     {obj_from_list([{<<"foo">>, []},
-                     {<<"bar">>, obj_from_list([{<<"baz">>, true}])},
-                     {<<"alice">>, <<"bob">>}]),
-      "{\"foo\":[],\"bar\":{\"baz\":true},\"alice\":\"bob\"}"},
-
-     %% json object in a json array
-     {[-123, <<"foo">>, obj_from_list([{<<"bar">>, []}]), null],
-      "[-123,\"foo\",{\"bar\":[]},null]"}
-    ].
-
-%% test utf8 encoding
-test_encoder_utf8() ->
-    %% safe conversion case (default)
-    [34,"\\u0001","\\u0442","\\u0435","\\u0441","\\u0442",34] =
-        encode(<<1,"\321\202\320\265\321\201\321\202">>),
-
-    %% raw utf8 output (optional)
-    Enc = js_json:encoder([{utf8, true}]),
-    [34,"\\u0001",[209,130],[208,181],[209,129],[209,130],34] =
-        Enc(<<1,"\321\202\320\265\321\201\321\202">>).