80 lines
No EOL
2.8 KiB
Erlang
80 lines
No EOL
2.8 KiB
Erlang
%% The MIT License
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%% Copyright (c) 2011 Alisdair Sullivan <alisdairsullivan@yahoo.ca>
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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-module(gen_json).
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-export([behaviour_info/1]).
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-export([parser/1, parser/2, parser/3]).
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-export([handle_event/2, init/1]).
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-type events() :: [event()].
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-type event() :: start_object
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| end_object
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| start_array
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| end_array
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| end_json
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| {key, list()}
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| {string, list()}
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| {integer, integer()}
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| {float, float()}
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| {literal, true}
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| {literal, false}
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| {literal, null}.
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-type opts() :: [opt()].
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-type opt() :: loose_unicode
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| escape_forward_slashes
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| explicit_end
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| {parser, auto} | {parser, encoder} | {parser, decoder} | {parser, function()}.
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-export_type([events/0, event/0, opts/0, opt/0]).
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behaviour_info(callbacks) -> [{init, 0}, {handle_event, 2}];
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behaviour_info(_) -> undefined.
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parser(F) -> parser(F, []).
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parser(F, Opts) when is_function(F, 1) -> parser(?MODULE, {F, undefined}, Opts);
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parser({F, State}, Opts) when is_function(F, 2) -> parser(?MODULE, {F, State}, Opts);
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parser(Mod, Args) -> parser(Mod, Args, []).
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parser(Mod, Args, Opts) when is_atom(Mod), is_list(Opts) ->
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case proplists:get_value(parser, Opts, auto) of
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auto ->
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fun(Input) when is_list(Input) -> (jsx_encoder:encoder(Mod, Mod:init(Args), Opts))(Input)
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; (Input) when is_binary(Input) -> (jsx_decoder:decoder(Mod, Mod:init(Args), Opts))(Input)
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end
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; encoder ->
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fun(Input) -> (jsx_encoder:encoder(Mod, Mod:init(Args), Opts))(Input) end
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; decoder ->
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fun(Input) -> (jsx_decoder:decoder(Mod, Mod:init(Args), Opts))(Input) end
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end.
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handle_event(Event, {F, undefined}) -> F(Event), {F, undefined};
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handle_event(Event, {F, State}) -> {F, F(Event, State)}.
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init(State) -> State. |