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machinery for post_decode (still does nothing)

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alisdair sullivan 2012-04-06 08:51:50 -07:00
parent ded212c397
commit d9bb9ee9ac
1 changed files with 17 additions and 13 deletions
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30
src/jsx_to_term.erl
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@ -28,7 +28,8 @@
-record(opts, {
labels = binary
labels = binary,
post_decode = false
}).
-type opts() :: list().
@ -49,7 +50,6 @@ to_term(Source, Opts) when is_list(Opts) ->
(jsx:decoder(?MODULE, Opts, jsx_utils:extract_opts(Opts)))(Source).
parse_opts(Opts) -> parse_opts(Opts, #opts{}).
parse_opts([{labels, Val}|Rest], Opts)
@ -57,42 +57,43 @@ parse_opts([{labels, Val}|Rest], Opts)
parse_opts(Rest, Opts#opts{labels = Val});
parse_opts([labels|Rest], Opts) ->
parse_opts(Rest, Opts#opts{labels = binary});
parse_opts([{post_decode, F}|Rest], Opts=#opts{post_decode=false}) when is_function(F, 1) ->
parse_opts(Rest, Opts#opts{post_decode=F});
parse_opts([{post_decode, _}|_] = Options, Opts) ->
erlang:error(badarg, [Options, Opts]);
parse_opts([_|Rest], Opts) ->
parse_opts(Rest, Opts);
parse_opts([], Opts) ->
Opts.
init(Opts) -> {[[]], parse_opts(Opts)}.
handle_event(end_json, {[[Terms]], _Opts}) -> Terms;
handle_event(start_object, {Terms, Opts}) -> {[[]|Terms], Opts};
handle_event(end_object, {[[], {key, Key}, Last|Terms], Opts}) ->
{[[{Key, [{}]}] ++ Last] ++ Terms, Opts};
{[[{Key, post_decode([{}], Opts)}] ++ Last] ++ Terms, Opts};
handle_event(end_object, {[Object, {key, Key}, Last|Terms], Opts}) ->
{[[{Key, lists:reverse(Object)}] ++ Last] ++ Terms, Opts};
{[[{Key, post_decode(lists:reverse(Object), Opts)}] ++ Last] ++ Terms, Opts};
handle_event(end_object, {[[], Last|Terms], Opts}) ->
{[[[{}]] ++ Last] ++ Terms, Opts};
{[[post_decode([{}], Opts)] ++ Last] ++ Terms, Opts};
handle_event(end_object, {[Object, Last|Terms], Opts}) ->
{[[lists:reverse(Object)] ++ Last] ++ Terms, Opts};
{[[post_decode(lists:reverse(Object), Opts)] ++ Last] ++ Terms, Opts};
handle_event(start_array, {Terms, Opts}) -> {[[]|Terms], Opts};
handle_event(end_array, {[List, {key, Key}, Last|Terms], Opts}) ->
{[[{Key, lists:reverse(List)}] ++ Last] ++ Terms, Opts};
{[[{Key, post_decode(lists:reverse(List), Opts)}] ++ Last] ++ Terms, Opts};
handle_event(end_array, {[Current, Last|Terms], Opts}) ->
{[[lists:reverse(Current)] ++ Last] ++ Terms, Opts};
{[[post_decode(lists:reverse(Current), Opts)] ++ Last] ++ Terms, Opts};
handle_event({key, Key}, {Terms, Opts}) -> {[{key, format_key(Key, Opts)}] ++ Terms, Opts};
handle_event({_, Event}, {[{key, Key}, Last|Terms], Opts}) ->
{[[{Key, Event}] ++ Last] ++ Terms, Opts};
{[[{Key, post_decode(Event, Opts)}] ++ Last] ++ Terms, Opts};
handle_event({_, Event}, {[Last|Terms], Opts}) ->
{[[Event] ++ Last] ++ Terms, Opts}.
{[[post_decode(Event, Opts)] ++ Last] ++ Terms, Opts}.
format_key(Key, Opts) ->
@ -103,6 +104,9 @@ format_key(Key, Opts) ->
end.
post_decode(Value, #opts{post_decode=false}) -> Value;
post_decode(Value, Opts) -> (Opts#opts.post_decode)(Value).
%% eunit tests