fixed embarassing non-termination bug

This commit is contained in:
alisdair sullivan 2010-06-08 20:21:18 -07:00
parent bbc291c7c4
commit 0d7a6f9720
4 changed files with 862 additions and 91 deletions

View file

@ -25,16 +25,16 @@
-author("alisdairsullivan@yahoo.ca"). -author("alisdairsullivan@yahoo.ca").
-export([pretty/2, jsx_event/2]). -export([pretty/2, prettify/2]).
-record(opts, { -record(opts, {
indent = 4 indent = " "
}). }).
pretty(JSON, Opts) -> pretty(JSON, Opts) ->
Init = init(parse_opts(Opts, #opts{})), Init = init(parse_opts(Opts, #opts{})),
P = jsx:decoder({jsx_prettify, jsx_event, Init}, []), P = jsx:decoder({jsx_prettify, prettify, Init}, []),
case P(JSON) of case P(JSON) of
{incomplete, _} -> {error, badjson} {incomplete, _} -> {error, badjson}
; {error, badjson} -> {error, badjson} ; {error, badjson} -> {error, badjson}
@ -43,7 +43,7 @@ pretty(JSON, Opts) ->
parse_opts([{indent, Val}|Rest], Opts) -> parse_opts([{indent, Val}|Rest], Opts) ->
parse_opts(Rest, Opts#opts{indent = Val}); parse_opts(Rest, Opts#opts{indent = [ 16#20 || _ <- lists:seq(1, Val) ]});
parse_opts([], Opts) -> parse_opts([], Opts) ->
Opts. Opts.
@ -52,45 +52,45 @@ init(Opts) ->
{[], Opts#opts.indent, 0, new}. {[], Opts#opts.indent, 0, new}.
jsx_event(start_object, {Acc, Indent, Level, value}) -> prettify(start_object, {Acc, Indent, Level, value}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ "{", Indent, Level + 1, new}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ "{", Indent, Level + 1, new};
jsx_event(start_object, {Acc, Indent, Level, new}) -> prettify(start_object, {Acc, Indent, Level, new}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ "{", Indent, Level + 1, new}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ "{", Indent, Level + 1, new};
jsx_event(start_object, {Acc, Indent, Level, _}) -> prettify(start_object, {Acc, Indent, Level, _}) ->
{Acc ++ "{", Indent, Level + 1, new}; {Acc ++ "{", Indent, Level + 1, new};
jsx_event(start_array, {Acc, Indent, Level, value}) -> prettify(start_array, {Acc, Indent, Level, value}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ "[", Indent, Level + 1, new}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ "[", Indent, Level + 1, new};
jsx_event(start_array, {Acc, Indent, Level, new}) -> prettify(start_array, {Acc, Indent, Level, new}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ "[", Indent, Level + 1, new}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ "[", Indent, Level + 1, new};
jsx_event(start_array, {Acc, Indent, Level, _}) -> prettify(start_array, {Acc, Indent, Level, _}) ->
{Acc ++ "[", Indent, Level + 1, new}; {Acc ++ "[", Indent, Level + 1, new};
jsx_event(end_object, {Acc, Indent, Level, value}) -> prettify(end_object, {Acc, Indent, Level, value}) ->
{Acc ++ "\n" ++ indent(Indent, Level - 1) ++ "}", Indent, Level - 1, value}; {Acc ++ "\n" ++ indent(Indent, Level - 1) ++ "}", Indent, Level - 1, value};
jsx_event(end_object, {Acc, Indent, Level, new}) -> prettify(end_object, {Acc, Indent, Level, new}) ->
{Acc ++ "}", Indent, Level - 1, value}; {Acc ++ "}", Indent, Level - 1, value};
jsx_event(end_array, {Acc, Indent, Level, value}) -> prettify(end_array, {Acc, Indent, Level, value}) ->
{Acc ++ "\n" ++ indent(Indent, Level - 1) ++ "]", Indent, Level - 1, value}; {Acc ++ "\n" ++ indent(Indent, Level - 1) ++ "]", Indent, Level - 1, value};
jsx_event(end_array, {Acc, Indent, Level, new}) -> prettify(end_array, {Acc, Indent, Level, new}) ->
{Acc ++ "]", Indent, Level - 1, value}; {Acc ++ "]", Indent, Level - 1, value};
jsx_event({key, Key}, {Acc, Indent, Level, value}) -> prettify({key, Key}, {Acc, Indent, Level, value}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ "\"" ++ Key ++ "\": ", Indent, Level, key}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ "\"" ++ Key ++ "\": ", Indent, Level, key};
jsx_event({key, Key}, {Acc, Indent, Level, _}) -> prettify({key, Key}, {Acc, Indent, Level, _}) ->
{Acc ++ "\n" ++ indent(Indent, Level) ++ "\"" ++ Key ++ "\": ", Indent, Level, key}; {Acc ++ "\n" ++ indent(Indent, Level) ++ "\"" ++ Key ++ "\": ", Indent, Level, key};
jsx_event({Type, Value}, {Acc, Indent, Level, value}) -> prettify({Type, Value}, {Acc, Indent, Level, value}) ->
{Acc ++ ",\n" ++ indent(Indent, Level) ++ format(Type, Value), Indent, Level, value}; {Acc ++ ",\n" ++ indent(Indent, Level) ++ format(Type, Value), Indent, Level, value};
jsx_event({Type, Value}, {Acc, Indent, Level, new}) -> prettify({Type, Value}, {Acc, Indent, Level, new}) ->
{Acc ++ "\n" ++ indent(Indent, Level) ++ format(Type, Value), Indent, Level, value}; {Acc ++ "\n" ++ indent(Indent, Level) ++ format(Type, Value), Indent, Level, value};
jsx_event({Type, Value}, {Acc, Indent, Level, key}) -> prettify({Type, Value}, {Acc, Indent, Level, key}) ->
{Acc ++ format(Type, Value), Indent, Level, value}; {Acc ++ format(Type, Value), Indent, Level, value};
jsx_event(reset, {_, Indent, _, _}) -> prettify(reset, {_, Indent, _, _}) ->
{[], Indent, 0, new}; {[], Indent, 0, new};
jsx_event(end_of_json, {Acc, _, _, _}) -> prettify(end_of_json, {Acc, _, _, _}) ->
Acc. Acc.
@ -103,5 +103,10 @@ format(_, Number) ->
indent(Indent, Level) -> indent(Indent, Level) ->
[ 16#20 || _ <- lists:seq(1, Indent * Level) ]. indent(Indent, Level, "").
indent(Indent, 0, Acc) ->
Acc;
indent(Indent, N, Acc) ->
Indent ++ Acc.

View file

@ -27,7 +27,12 @@
-export([decode/1, decoder/0, decoder/1, decoder/2, detect_encoding/4]). -export([decode/1, decoder/0, decoder/1, decoder/2, detect_encoding/4]).
decode(JSON) -> decode(JSON) ->
(jsx:decoder())(JSON). F = decoder(),
case F(JSON) of
{incomplete, _} -> {error, badjson}
; {error, badjson} -> {error, badjson}
; {Result, _} -> {ok, Result}
end.
decoder() -> decoder() ->
decoder([]). decoder([]).
@ -45,7 +50,6 @@ decoder({Mod, Fun, State}, OptsList) when is_list(OptsList), is_atom(Mod), is_at
start({fun(E, S) -> Mod:Fun(E, S) end, State}, OptsList). start({fun(E, S) -> Mod:Fun(E, S) end, State}, OptsList).
start(Callbacks, OptsList) -> start(Callbacks, OptsList) ->
Opts = parse_opts(OptsList),
F = case proplists:get_value(encoding, OptsList, auto) of F = case proplists:get_value(encoding, OptsList, auto) of
utf8 -> fun jsx_utf8:start/4 utf8 -> fun jsx_utf8:start/4
; utf16 -> fun jsx_utf16:start/4 ; utf16 -> fun jsx_utf16:start/4
@ -54,13 +58,11 @@ start(Callbacks, OptsList) ->
; {utf32, little} -> fun jsx_utf32le:start/4 ; {utf32, little} -> fun jsx_utf32le:start/4
; auto -> fun jsx:detect_encoding/4 ; auto -> fun jsx:detect_encoding/4
end, end,
start(Callbacks, Opts, F). start(Callbacks, OptsList, F).
start(Callbacks, Opts, F) -> start(Callbacks, OptsList, F) ->
fun(Stream) -> Opts = parse_opts(OptsList),
try F(Stream, [], Callbacks, Opts) fun(Stream) -> F(Stream, [], Callbacks, Opts) end.
catch error:badjson -> {error, badjson} end
end.
parse_opts(Opts) -> parse_opts(Opts) ->
parse_opts(Opts, {false, codepoint, false}). parse_opts(Opts, {false, codepoint, false}).

View file

@ -72,8 +72,8 @@ start(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S)
start(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> start(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
start(Bin, Stack, Callbacks, Opts) -> start(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> start(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> start(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -100,8 +100,8 @@ maybe_done(Bin, [], Callbacks, ?stream_mode(Opts)) ->
maybe_done(<<>>, [], Callbacks, Opts) -> maybe_done(<<>>, [], Callbacks, Opts) ->
{fold(end_of_json, Callbacks), fun(Stream) -> maybe_done(Stream, [], Callbacks, Opts) end}; {fold(end_of_json, Callbacks), fun(Stream) -> maybe_done(Stream, [], Callbacks, Opts) end};
maybe_done(Bin, Stack, Callbacks, Opts) -> maybe_done(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> maybe_done(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> maybe_done(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -118,8 +118,8 @@ object(<<?end_object/?encoding, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
object(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> object(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
object(Bin, Stack, Callbacks, Opts) -> object(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> object(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> object(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -152,8 +152,8 @@ array(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
array(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> array(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
array(Bin, Stack, Callbacks, Opts) -> array(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> array(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> array(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -184,8 +184,8 @@ value(<<?start_array/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
value(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> value(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
value(Bin, Stack, Callbacks, Opts) -> value(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> value(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> value(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -200,8 +200,8 @@ colon(<<?colon/?encoding, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
colon(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> colon(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
colon(Bin, Stack, Callbacks, Opts) -> colon(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> colon(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> colon(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -216,8 +216,8 @@ key(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
key(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) -> key(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end); maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
key(Bin, Stack, Callbacks, Opts) -> key(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> key(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> key(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -317,8 +317,8 @@ escape(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc)
when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus -> when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc); string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
escape(Bin, Stack, Callbacks, Opts, Acc) -> escape(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> escape(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> escape(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -372,8 +372,8 @@ escaped_unicode(<<D/?encoding, Rest/binary>>, Stack, Callbacks, Opts, String, [C
escaped_unicode(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) -> escaped_unicode(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc); escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
escaped_unicode(Bin, Stack, Callbacks, Opts, String, Acc) -> escaped_unicode(Bin, Stack, Callbacks, Opts, String, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> escaped_unicode(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, String, Acc) end fun(Stream) -> escaped_unicode(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, String, Acc) end
@ -408,8 +408,8 @@ negative(<<$0/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
negative(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) -> negative(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc); integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
negative(Bin, Stack, Callbacks, Opts, Acc) -> negative(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> negative(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> negative(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -440,8 +440,8 @@ zero(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)), {fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> zero(Stream, [], Callbacks, Opts, Acc) end}; fun(Stream) -> zero(Stream, [], Callbacks, Opts, Acc) end};
zero(Bin, Stack, Callbacks, Opts, Acc) -> zero(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> zero(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> zero(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -480,8 +480,8 @@ integer(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)), {fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> integer(Stream, [], Callbacks, Opts, Acc) end}; fun(Stream) -> integer(Stream, [], Callbacks, Opts, Acc) end};
integer(Bin, Stack, Callbacks, Opts, Acc) -> integer(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> integer(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> integer(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -494,8 +494,8 @@ initial_decimal(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when
initial_decimal(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) -> initial_decimal(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
decimal(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc); decimal(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
initial_decimal(Bin, Stack, Callbacks, Opts, Acc) -> initial_decimal(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> initial_decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> initial_decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -532,8 +532,8 @@ decimal(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)), {fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> decimal(Stream, [], Callbacks, Opts, Acc) end}; fun(Stream) -> decimal(Stream, [], Callbacks, Opts, Acc) end};
decimal(Bin, Stack, Callbacks, Opts, Acc) -> decimal(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -546,8 +546,8 @@ e(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?
e(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative -> e(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc); ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
e(Bin, Stack, Callbacks, Opts, Acc) -> e(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> e(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> e(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -558,8 +558,8 @@ e(Bin, Stack, Callbacks, Opts, Acc) ->
ex(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) -> ex(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc); exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
ex(Bin, Stack, Callbacks, Opts, Acc) -> ex(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> ex(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> ex(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -592,8 +592,8 @@ exp(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)), {fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> exp(Stream, [], Callbacks, Opts, Acc) end}; fun(Stream) -> exp(Stream, [], Callbacks, Opts, Acc) end};
exp(Bin, Stack, Callbacks, Opts, Acc) -> exp(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> exp(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end fun(Stream) -> exp(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
@ -604,8 +604,8 @@ exp(Bin, Stack, Callbacks, Opts, Acc) ->
tr(<<$r/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> tr(<<$r/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
tru(Rest, Stack, Callbacks, Opts); tru(Rest, Stack, Callbacks, Opts);
tr(Bin, Stack, Callbacks, Opts) -> tr(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> tr(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> tr(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -616,8 +616,8 @@ tr(Bin, Stack, Callbacks, Opts) ->
tru(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> tru(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
true(Rest, Stack, Callbacks, Opts); true(Rest, Stack, Callbacks, Opts);
tru(Bin, Stack, Callbacks, Opts) -> tru(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> tru(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> tru(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -628,8 +628,8 @@ tru(Bin, Stack, Callbacks, Opts) ->
true(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> true(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, true}, Callbacks), Opts); maybe_done(Rest, Stack, fold({literal, true}, Callbacks), Opts);
true(Bin, Stack, Callbacks, Opts) -> true(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> true(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> true(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -640,8 +640,8 @@ true(Bin, Stack, Callbacks, Opts) ->
fa(<<$a/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> fa(<<$a/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fal(Rest, Stack, Callbacks, Opts); fal(Rest, Stack, Callbacks, Opts);
fa(Bin, Stack, Callbacks, Opts) -> fa(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> fa(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> fa(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -652,8 +652,8 @@ fa(Bin, Stack, Callbacks, Opts) ->
fal(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> fal(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fals(Rest, Stack, Callbacks, Opts); fals(Rest, Stack, Callbacks, Opts);
fal(Bin, Stack, Callbacks, Opts) -> fal(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> fal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> fal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -664,8 +664,8 @@ fal(Bin, Stack, Callbacks, Opts) ->
fals(<<$s/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> fals(<<$s/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
false(Rest, Stack, Callbacks, Opts); false(Rest, Stack, Callbacks, Opts);
fals(Bin, Stack, Callbacks, Opts) -> fals(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> fals(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> fals(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -676,8 +676,8 @@ fals(Bin, Stack, Callbacks, Opts) ->
false(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> false(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, false}, Callbacks), Opts); maybe_done(Rest, Stack, fold({literal, false}, Callbacks), Opts);
false(Bin, Stack, Callbacks, Opts) -> false(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> false(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> false(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -688,8 +688,8 @@ false(Bin, Stack, Callbacks, Opts) ->
nu(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> nu(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
nul(Rest, Stack, Callbacks, Opts); nul(Rest, Stack, Callbacks, Opts);
nu(Bin, Stack, Callbacks, Opts) -> nu(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> nu(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> nu(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -700,8 +700,8 @@ nu(Bin, Stack, Callbacks, Opts) ->
nul(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> nul(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
null(Rest, Stack, Callbacks, Opts); null(Rest, Stack, Callbacks, Opts);
nul(Bin, Stack, Callbacks, Opts) -> nul(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> nul(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> nul(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -712,8 +712,8 @@ nul(Bin, Stack, Callbacks, Opts) ->
null(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) -> null(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, null}, Callbacks), Opts); maybe_done(Rest, Stack, fold({literal, null}, Callbacks), Opts);
null(Bin, Stack, Callbacks, Opts) -> null(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> null(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end fun(Stream) -> null(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
@ -730,8 +730,8 @@ null(Bin, Stack, Callbacks, Opts) ->
maybe_comment(<<?star/?encoding, Rest/binary>>, Resume) -> maybe_comment(<<?star/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume); comment(Rest, Resume);
maybe_comment(Bin, Resume) -> maybe_comment(Bin, Resume) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, {incomplete,
fun(Stream) -> maybe_comment(<<Bin/binary, Stream/binary>>, Resume) end fun(Stream) -> maybe_comment(<<Bin/binary, Stream/binary>>, Resume) end
@ -744,8 +744,8 @@ comment(<<?star/?encoding, Rest/binary>>, Resume) ->
comment(<<_/?encoding, Rest/binary>>, Resume) -> comment(<<_/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume); comment(Rest, Resume);
comment(Bin, Resume) -> comment(Bin, Resume) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, fun(Stream) -> comment(<<Bin/binary, Stream/binary>>, Resume) end} {incomplete, fun(Stream) -> comment(<<Bin/binary, Stream/binary>>, Resume) end}
end. end.
@ -756,8 +756,8 @@ maybe_comment_done(<<?solidus/?encoding, Rest/binary>>, Resume) ->
maybe_comment_done(<<_/?encoding, Rest/binary>>, Resume) -> maybe_comment_done(<<_/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume); comment(Rest, Resume);
maybe_comment_done(Bin, Resume) -> maybe_comment_done(Bin, Resume) ->
case byte_size(Bin) of case byte_size(Bin) >= ?symbol_size of
?symbol_size -> {error, badjson} true -> {error, badjson}
; _ -> ; _ ->
{incomplete, fun(Stream) -> maybe_comment_done(<<Bin/binary, Stream/binary>>, Resume) end} {incomplete, fun(Stream) -> maybe_comment_done(<<Bin/binary, Stream/binary>>, Resume) end}
end. end.

764
src/jsx_utf8.erl Normal file
View file

@ -0,0 +1,764 @@
%% The MIT License
%% Copyright (c) 2010 Alisdair Sullivan <alisdairsullivan@yahoo.ca>
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% this is a template for the utf8, utf16, utf16le, utf32 and utf32le decoders. it should
%% not be compiled directly, see the build script in /priv for details
-module(jsx_utf8).
-author("alisdairsullivan@yahoo.ca").
-define(utf8, true).
-include("jsx_decoder.hrl").
-export([start/4]).
%% callbacks to our handler are roughly equivalent to a fold over the events, incremental
%% rather than all at once.
fold(end_of_json, {F, State}) ->
F(end_of_json, State);
fold(Event, {F, State}) when is_function(F) ->
{F, F(Event, State)}.
%% this code is mostly autogenerated and mostly ugly. apologies. for more insight on
%% Callbacks or Opts, see the comments accompanying decoder/2 (in jsx.erl). Stack
%% is a stack of flags used to track depth and to keep track of whether we are
%% returning from a value or a key inside objects. all pops, peeks and pushes are
%% inlined. the code that handles naked values and comments is not optimized by the
%% compiler for efficient matching, but you shouldn't be using naked values or comments
%% anyways, they are horrible and contrary to the spec.
start(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
start(Rest, Stack, Callbacks, Opts);
start(<<?start_object/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
object(Rest, [key|Stack], fold(start_object, Callbacks), Opts);
start(<<?start_array/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
array(Rest, [array|Stack], fold(start_array, Callbacks), Opts);
start(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
string(Rest, Stack, Callbacks, Opts, []);
start(<<$t/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
tr(Rest, Stack, Callbacks, Opts);
start(<<$f/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fa(Rest, Stack, Callbacks, Opts);
start(<<$n/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
nu(Rest, Stack, Callbacks, Opts);
start(<<?negative/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
negative(Rest, Stack, Callbacks, Opts, "-");
start(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
zero(Rest, Stack, Callbacks, Opts, "0");
start(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S]);
start(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
start(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> start(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
maybe_done(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, Callbacks, Opts);
maybe_done(<<?end_object/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
maybe_done(Rest, Stack, fold(end_object, Callbacks), Opts);
maybe_done(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
maybe_done(Rest, Stack, fold(end_array, Callbacks), Opts);
maybe_done(<<?comma/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
key(Rest, [key|Stack], Callbacks, Opts);
maybe_done(<<?comma/?encoding, Rest/binary>>, [array|_] = Stack, Callbacks, Opts) ->
value(Rest, Stack, Callbacks, Opts);
maybe_done(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
maybe_done(Bin, [], Callbacks, ?stream_mode(Opts)) ->
{fold(end_of_json, Callbacks), fun(Stream) ->
start(<<Bin/binary, Stream/binary>>, [], fold(reset, Callbacks), Opts)
end};
maybe_done(<<>>, [], Callbacks, Opts) ->
{fold(end_of_json, Callbacks), fun(Stream) -> maybe_done(Stream, [], Callbacks, Opts) end};
maybe_done(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> maybe_done(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
object(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
object(Rest, Stack, Callbacks, Opts);
object(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
string(Rest, Stack, Callbacks, Opts, []);
object(<<?end_object/?encoding, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
maybe_done(Rest, Stack, fold(end_object, Callbacks), Opts);
object(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
object(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> object(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
array(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
array(Rest, Stack, Callbacks, Opts);
array(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
string(Rest, Stack, Callbacks, Opts, []);
array(<<$t/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
tr(Rest, Stack, Callbacks, Opts);
array(<<$f/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fa(Rest, Stack, Callbacks, Opts);
array(<<$n/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
nu(Rest, Stack, Callbacks, Opts);
array(<<?negative/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
negative(Rest, Stack, Callbacks, Opts, "-");
array(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
zero(Rest, Stack, Callbacks, Opts, "0");
array(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S]);
array(<<?start_object/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
object(Rest, [key|Stack], fold(start_object, Callbacks), Opts);
array(<<?start_array/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
array(Rest, [array|Stack], fold(start_array, Callbacks), Opts);
array(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
maybe_done(Rest, Stack, fold(end_array, Callbacks), Opts);
array(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
array(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> array(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
value(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
value(Rest, Stack, Callbacks, Opts);
value(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
string(Rest, Stack, Callbacks, Opts, []);
value(<<$t/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
tr(Rest, Stack, Callbacks, Opts);
value(<<$f/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fa(Rest, Stack, Callbacks, Opts);
value(<<$n/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
nu(Rest, Stack, Callbacks, Opts);
value(<<?negative/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
negative(Rest, Stack, Callbacks, Opts, "-");
value(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
zero(Rest, Stack, Callbacks, Opts, "0");
value(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S]);
value(<<?start_object/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
object(Rest, [key|Stack], fold(start_object, Callbacks), Opts);
value(<<?start_array/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
array(Rest, [array|Stack], fold(start_array, Callbacks), Opts);
value(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
value(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> value(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
colon(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
colon(Rest, Stack, Callbacks, Opts);
colon(<<?colon/?encoding, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
value(Rest, [object|Stack], Callbacks, Opts);
colon(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
colon(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> colon(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
key(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
key(Rest, Stack, Callbacks, Opts);
key(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
string(Rest, Stack, Callbacks, Opts, []);
key(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts)) ->
maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
key(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> key(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
%% string has an additional parameter, an accumulator (Acc) used to hold the intermediate
%% representation of the string being parsed. using a list of integers representing
%% unicode codepoints is faster than constructing binaries, many of which will be
%% converted back to lists by the user anyways.
string(<<?quote/?encoding, Rest/binary>>, [key|_] = Stack, Callbacks, Opts, Acc) ->
colon(Rest, Stack, fold({key, lists:reverse(Acc)}, Callbacks), Opts);
string(<<?quote/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold({string, lists:reverse(Acc)}, Callbacks), Opts);
string(<<?rsolidus/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
escape(Rest, Stack, Callbacks, Opts, Acc);
string(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_noncontrol(S) ->
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
string(Bin, Stack, Callbacks, Opts, Acc) ->
case partial_utf(Bin) of
true ->
{incomplete,
fun(Stream) -> string(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
; false ->
{error, badjson}
end.
-ifdef(utf8).
partial_utf(<<>>) -> true;
partial_utf(<<X>>) when X >= 16#c2, X =< 16#df -> true;
partial_utf(<<X, Rest/binary>>) when X >= 16#e0, X =< 16#ef ->
case Rest of
<<>> -> true
; <<Y>> when Y >= 16#80, Y =< 16#bf -> true
end;
partial_utf(<<X, Rest/binary>>) when X >= 16#f0, X =< 16#f4 ->
case Rest of
<<>> -> true
; <<Y>> when Y >= 16#80, Y =< 16#bf -> true
; <<Y, Z>> when Y >= 16#80, Y =< 16#bf, Z >= 16#80, Z =< 16#bf -> true
end;
partial_utf(_) -> false.
-endif.
-ifdef(utf16).
partial_utf(<<>>) -> true;
%% this case is not strictly true, there are single bytes that should be rejected, but
%% they're rare enough they can be ignored
partial_utf(<<_X>>) -> true;
partial_utf(<<X, _Y>>) when X >= 16#d8, X =< 16#df -> true;
partial_utf(<<X, _Y, Z>>) when X >= 16#d8, X =< 16#df, Z >= 16#dc, Z =< 16#df -> true;
partial_utf(_) -> false.
-endif.
-ifdef(utf16le).
partial_utf(<<>>) -> true;
%% this case is not strictly true, there are single bytes that should be rejected, but
%% they're rare enough they can be ignored
partial_utf(<<_X>>) -> true;
partial_utf(<<_Y, X>>) when X >= 16#d8, X =< 16#df -> true;
partial_utf(<<_Y, X, _Z>>) when X >= 16#d8, X =< 16#df -> true;
partial_utf(_) -> false.
-endif.
-ifdef(utf32).
partial_utf(<<_:32>>) -> false;
partial_utf(_) -> true.
-endif.
-ifdef(utf32le).
partial_utf(<<_:32>>) -> false;
partial_utf(_) -> true.
-endif.
%% only thing to note here is the additional accumulator passed to escaped_unicode used
%% to hold the codepoint sequence. unescessary, but nicer than using the string
%% accumulator.
escape(<<$b/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
string(Rest, Stack, Callbacks, Opts, "\b" ++ Acc);
escape(<<$f/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
string(Rest, Stack, Callbacks, Opts, "\f" ++ Acc);
escape(<<$n/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
string(Rest, Stack, Callbacks, Opts, "\n" ++ Acc);
escape(<<$r/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
string(Rest, Stack, Callbacks, Opts, "\r" ++ Acc);
escape(<<$t/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
string(Rest, Stack, Callbacks, Opts, "\t" ++ Acc);
escape(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
escaped_unicode(Rest, Stack, Callbacks, Opts, Acc, []);
escape(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc)
when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
escape(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> escape(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
%% this code is ugly and unfortunate, but so is json's handling of escaped unicode
%% codepoint sequences. if the ascii option is present, the sequence is converted
%% to a codepoint and inserted into the string if it represents an ascii value. if
%% the codepoint option is present the sequence is converted and inserted as long
%% as it represents a valid unicode codepoint. this means non-characters
%% representable in 16 bits are not converted (the utf16 surrogates and the two
%% special non-characters). any other option and no conversion is done.
escaped_unicode(<<D/?encoding, Rest/binary>>,
Stack,
Callbacks,
?escaped_unicode_to_ascii(Opts),
String,
[C, B, A])
when ?is_hex(D) ->
case erlang:list_to_integer([A, B, C, D], 16) of
X when X < 128 ->
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
; _ ->
string(Rest, Stack, Callbacks, Opts, [D, C, B, A, $u, ?rsolidus] ++ String)
end;
escaped_unicode(<<D/?encoding, Rest/binary>>,
Stack,
Callbacks,
?escaped_unicode_to_codepoint(Opts),
String,
[C, B, A])
when ?is_hex(D) ->
case erlang:list_to_integer([A, B, C, D], 16) of
X when X >= 16#dc00, X =< 16#dfff ->
case check_acc_for_surrogate(String) of
false ->
string(Rest, Stack, Callbacks, Opts, [D, C, B, A, $u, ?rsolidus] ++ String)
; {Y, NewString} ->
string(Rest, Stack, Callbacks, Opts, [surrogate_to_codepoint(Y, X)] ++ NewString)
end
; X when X < 16#d800; X > 16#dfff, X < 16#fffe ->
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
; _ ->
string(Rest, Stack, Callbacks, Opts, [D, C, B, A, $u, ?rsolidus] ++ String)
end;
escaped_unicode(<<D/?encoding, Rest/binary>>, Stack, Callbacks, Opts, String, [C, B, A]) when ?is_hex(D) ->
string(Rest, Stack, Callbacks, Opts, [D, C, B, A, $u, ?rsolidus] ++ String);
escaped_unicode(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
escaped_unicode(Bin, Stack, Callbacks, Opts, String, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> escaped_unicode(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, String, Acc) end
}
end.
%% upon encountering a low pair json/hex encoded value, check to see if there's a high
%% value already in the accumulator.
check_acc_for_surrogate([D, C, B, A, $u, ?rsolidus|Rest])
when ?is_hex(D), ?is_hex(C), ?is_hex(B), ?is_hex(A) ->
case erlang:list_to_integer([A, B, C, D], 16) of
X when X >=16#d800, X =< 16#dbff ->
{X, Rest};
_ ->
false
end;
check_acc_for_surrogate(_) ->
false.
%% stole this from the unicode spec
surrogate_to_codepoint(High, Low) ->
(High - 16#d800) * 16#400 + (Low - 16#dc00) + 16#10000.
%% like strings, numbers are collected in an intermediate accumulator before
%% being emitted to the callback handler.
negative(<<$0/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
zero(Rest, Stack, Callbacks, Opts, "0" ++ Acc);
negative(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
negative(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> negative(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
zero(<<?end_object/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_object, fold({integer, lists:reverse(Acc)}, Callbacks)), Opts);
zero(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_array, fold({integer, lists:reverse(Acc)}, Callbacks)), Opts);
zero(<<?comma/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
key(Rest, [key|Stack], fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
zero(<<?comma/?encoding, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
value(Rest, Stack, fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
zero(<<?decimalpoint/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
initial_decimal(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
zero(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
zero(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts), Acc) ->
maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
zero(Bin, [], Callbacks, ?stream_mode(Opts), Acc) ->
CB = fold({integer, lists:reverse(Acc)}, Callbacks),
{fold(end_of_json, CB), fun(Stream) ->
start(<<Bin/binary, Stream/binary>>, [], fold(reset, CB), Opts)
end};
zero(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> zero(Stream, [], Callbacks, Opts, Acc) end};
zero(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> zero(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
integer(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
integer(<<?end_object/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_object, fold({integer, lists:reverse(Acc)}, Callbacks)), Opts);
integer(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_array, fold({integer, lists:reverse(Acc)}, Callbacks)), Opts);
integer(<<?comma/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
key(Rest, [key|Stack], fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
integer(<<?comma/?encoding, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
value(Rest, Stack, fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
integer(<<?decimalpoint/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
initial_decimal(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
integer(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
integer(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
integer(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
e(Rest, Stack, Callbacks, Opts, "e0." ++ Acc);
integer(<<$E/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
e(Rest, Stack, Callbacks, Opts, "e0." ++ Acc);
integer(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, fold({integer, lists:reverse(Acc)}, Callbacks), Opts);
integer(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts), Acc) ->
maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
integer(Bin, [], Callbacks, ?stream_mode(Opts), Acc) ->
CB = fold({integer, lists:reverse(Acc)}, Callbacks),
{fold(end_of_json, CB), fun(Stream) ->
start(<<Bin/binary, Stream/binary>>, [], fold(reset, CB), Opts)
end};
integer(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({integer, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> integer(Stream, [], Callbacks, Opts, Acc) end};
integer(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> integer(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
initial_decimal(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
decimal(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
initial_decimal(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
decimal(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
initial_decimal(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> initial_decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
decimal(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
decimal(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
decimal(<<?end_object/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_object, fold({float, lists:reverse(Acc)}, Callbacks)), Opts);
decimal(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_array, fold({float, lists:reverse(Acc)}, Callbacks)), Opts);
decimal(<<?comma/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
key(Rest, [key|Stack], fold({float, lists:reverse(Acc)}, Callbacks), Opts);
decimal(<<?comma/?encoding, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
value(Rest, Stack, fold({float, lists:reverse(Acc)}, Callbacks), Opts);
decimal(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
decimal(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
decimal(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
decimal(<<$E/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
decimal(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, fold({float, lists:reverse(Acc)}, Callbacks), Opts);
decimal(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts), Acc) ->
maybe_comment(Rest, fun(Resume) -> decimal(Resume, Stack, Callbacks, Opts, Acc) end);
decimal(Bin, [], Callbacks, ?stream_mode(Opts), Acc) ->
CB = fold({float, lists:reverse(Acc)}, Callbacks),
{fold(end_of_json, CB), fun(Stream) ->
start(<<Bin/binary, Stream/binary>>, [], fold(reset, CB), Opts)
end};
decimal(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> decimal(Stream, [], Callbacks, Opts, Acc) end};
decimal(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> decimal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
e(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
e(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
e(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> e(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
ex(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
ex(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> ex(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
exp(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
exp(<<?end_object/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_object, fold({float, lists:reverse(Acc)}, Callbacks)), Opts);
exp(<<?end_array/?encoding, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
maybe_done(Rest, Stack, fold(end_array, fold({float, lists:reverse(Acc)}, Callbacks)), Opts);
exp(<<?comma/?encoding, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
key(Rest, [key|Stack], fold({float, lists:reverse(Acc)}, Callbacks), Opts);
exp(<<?comma/?encoding, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
value(Rest, Stack, fold({float, lists:reverse(Acc)}, Callbacks), Opts);
exp(<<?zero/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
exp(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
exp(<<?solidus/?encoding, Rest/binary>>, Stack, Callbacks, ?comments_enabled(Opts), Acc) ->
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
exp(<<S/?encoding, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, fold({float, lists:reverse(Acc)}, Callbacks), Opts);
exp(Bin, [], Callbacks, ?stream_mode(Opts), Acc) ->
CB = fold({float, lists:reverse(Acc)}, Callbacks),
{fold(end_of_json, CB), fun(Stream) ->
start(<<Bin/binary, Stream/binary>>, [], fold(reset, CB), Opts)
end};
exp(<<>>, [], Callbacks, Opts, Acc) ->
{fold(end_of_json, fold({float, lists:reverse(Acc)}, Callbacks)),
fun(Stream) -> exp(Stream, [], Callbacks, Opts, Acc) end};
exp(Bin, Stack, Callbacks, Opts, Acc) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> exp(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts, Acc) end
}
end.
tr(<<$r/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
tru(Rest, Stack, Callbacks, Opts);
tr(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> tr(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
tru(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
true(Rest, Stack, Callbacks, Opts);
tru(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> tru(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
true(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, true}, Callbacks), Opts);
true(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> true(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
fa(<<$a/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fal(Rest, Stack, Callbacks, Opts);
fa(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> fa(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
fal(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
fals(Rest, Stack, Callbacks, Opts);
fal(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> fal(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
fals(<<$s/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
false(Rest, Stack, Callbacks, Opts);
fals(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> fals(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
false(<<$e/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, false}, Callbacks), Opts);
false(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> false(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
nu(<<$u/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
nul(Rest, Stack, Callbacks, Opts);
nu(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> nu(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
nul(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
null(Rest, Stack, Callbacks, Opts);
nul(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> nul(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
null(<<$l/?encoding, Rest/binary>>, Stack, Callbacks, Opts) ->
maybe_done(Rest, Stack, fold({literal, null}, Callbacks), Opts);
null(Bin, Stack, Callbacks, Opts) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> null(<<Bin/binary, Stream/binary>>, Stack, Callbacks, Opts) end
}
end.
%% comments are c style, /* blah blah */ and are STRONGLY discouraged. any unicode
%% character is valid in a comment, except, obviously the */ sequence which ends
%% the comment. they're implemented as a closure called when the comment ends that
%% returns execution to the point where the comment began. comments are not
%% recorded in any way, simply parsed.
maybe_comment(<<?star/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume);
maybe_comment(Bin, Resume) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete,
fun(Stream) -> maybe_comment(<<Bin/binary, Stream/binary>>, Resume) end
}
end.
comment(<<?star/?encoding, Rest/binary>>, Resume) ->
maybe_comment_done(Rest, Resume);
comment(<<_/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume);
comment(Bin, Resume) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete, fun(Stream) -> comment(<<Bin/binary, Stream/binary>>, Resume) end}
end.
maybe_comment_done(<<?solidus/?encoding, Rest/binary>>, Resume) ->
Resume(Rest);
maybe_comment_done(<<_/?encoding, Rest/binary>>, Resume) ->
comment(Rest, Resume);
maybe_comment_done(Bin, Resume) ->
case byte_size(Bin) >= ?symbol_size of
true -> {error, badjson}
; _ ->
{incomplete, fun(Stream) -> maybe_comment_done(<<Bin/binary, Stream/binary>>, Resume) end}
end.