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Fix specs after erlang:hibernate/3 calls were added
This however does not fix the related Dialyzer warnings. I have no idea what the warnings are about nor how to fix them, so feel free to work on it and submit a patch!
This commit is contained in:
Loïc Hoguin
parent
5e006be01f
commit
691b7c4518
2 changed files with 26 additions and 25 deletions
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@ -64,7 +64,7 @@ start_link(ListenerPid, Socket, Transport, Opts) ->
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%% FSM.
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%% @private
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-spec init(pid(), inet:socket(), module(), any()) -> ok.
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-spec init(pid(), inet:socket(), module(), any()) -> ok | none().
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init(ListenerPid, Socket, Transport, Opts) ->
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Dispatch = proplists:get_value(dispatch, Opts, []),
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MaxEmptyLines = proplists:get_value(max_empty_lines, Opts, 5),
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@ -74,7 +74,7 @@ init(ListenerPid, Socket, Transport, Opts) ->
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dispatch=Dispatch, max_empty_lines=MaxEmptyLines, timeout=Timeout}).
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%% @private
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-spec parse_request(#state{}) -> ok.
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-spec parse_request(#state{}) -> ok | none().
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%% @todo Use decode_packet options to limit length?
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parse_request(State=#state{buffer=Buffer}) ->
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case erlang:decode_packet(http_bin, Buffer, []) of
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@ -83,7 +83,7 @@ parse_request(State=#state{buffer=Buffer}) ->
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{error, _Reason} -> error_terminate(400, State)
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end.
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-spec wait_request(#state{}) -> ok.
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-spec wait_request(#state{}) -> ok | none().
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wait_request(State=#state{socket=Socket, transport=Transport,
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timeout=T, buffer=Buffer}) ->
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case Transport:recv(Socket, 0, T) of
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@ -93,7 +93,7 @@ wait_request(State=#state{socket=Socket, transport=Transport,
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end.
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-spec request({http_request, http_method(), http_uri(),
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http_version()}, #state{}) -> ok.
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http_version()}, #state{}) -> ok | none().
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%% @todo We probably want to handle some things differently between versions.
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request({http_request, _Method, _URI, Version}, State)
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when Version =/= {1, 0}, Version =/= {1, 1} ->
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@ -122,7 +122,7 @@ request({http_error, <<"\r\n">>}, State=#state{req_empty_lines=N}) ->
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request({http_error, _Any}, State) ->
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error_terminate(400, State).
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-spec parse_header(#http_req{}, #state{}) -> ok.
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-spec parse_header(#http_req{}, #state{}) -> ok | none().
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parse_header(Req, State=#state{buffer=Buffer}) ->
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case erlang:decode_packet(httph_bin, Buffer, []) of
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{ok, Header, Rest} -> header(Header, Req, State#state{buffer=Rest});
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@ -130,7 +130,7 @@ parse_header(Req, State=#state{buffer=Buffer}) ->
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{error, _Reason} -> error_terminate(400, State)
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end.
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-spec wait_header(#http_req{}, #state{}) -> ok.
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-spec wait_header(#http_req{}, #state{}) -> ok | none().
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wait_header(Req, State=#state{socket=Socket,
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transport=Transport, timeout=T, buffer=Buffer}) ->
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case Transport:recv(Socket, 0, T) of
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@ -141,7 +141,7 @@ wait_header(Req, State=#state{socket=Socket,
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end.
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-spec header({http_header, integer(), http_header(), any(), binary()}
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| http_eoh, #http_req{}, #state{}) -> ok.
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| http_eoh, #http_req{}, #state{}) -> ok | none().
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header({http_header, _I, 'Host', _R, RawHost}, Req=#http_req{
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transport=Transport, host=undefined}, State) ->
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RawHost2 = cowboy_bstr:to_lower(RawHost),
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@ -187,7 +187,7 @@ header({http_error, _Bin}, _Req, State) ->
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error_terminate(500, State).
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-spec dispatch(fun((#http_req{}, #state{}) -> ok),
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#http_req{}, #state{}) -> ok.
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#http_req{}, #state{}) -> ok | none().
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dispatch(Next, Req=#http_req{host=Host, path=Path},
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State=#state{dispatch=Dispatch}) ->
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%% @todo We probably want to filter the Host and Path here to allow
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@ -202,7 +202,7 @@ dispatch(Next, Req=#http_req{host=Host, path=Path},
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error_terminate(404, State)
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end.
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-spec handler_init(#http_req{}, #state{}) -> ok.
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-spec handler_init(#http_req{}, #state{}) -> ok | none().
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handler_init(Req, State=#state{listener=ListenerPid,
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transport=Transport, handler={Handler, Opts}}) ->
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try Handler:init({Transport:name(), http}, Req, Opts) of
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@ -234,7 +234,7 @@ handler_init(Req, State=#state{listener=ListenerPid,
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[Handler, Class, Reason, Opts, Req, erlang:get_stacktrace()])
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end.
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-spec handler_handle(any(), #http_req{}, #state{}) -> ok.
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-spec handler_handle(any(), #http_req{}, #state{}) -> ok | none().
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handler_handle(HandlerState, Req, State=#state{handler={Handler, Opts}}) ->
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try Handler:handle(Req, HandlerState) of
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{ok, Req2, HandlerState2} ->
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@ -253,10 +253,11 @@ handler_handle(HandlerState, Req, State=#state{handler={Handler, Opts}}) ->
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%% We don't listen for Transport closes because that would force us
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%% to receive data and buffer it indefinitely.
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-spec handler_before_loop(any(), #http_req{}, #state{}) -> ok.
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-spec handler_before_loop(any(), #http_req{}, #state{}) -> ok | none().
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handler_before_loop(HandlerState, Req, State=#state{hibernate=true}) ->
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State2 = handler_loop_timeout(State),
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erlang:hibernate(?MODULE, handler_loop, [HandlerState, Req, State2]);
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erlang:hibernate(?MODULE, handler_loop,
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[HandlerState, Req, State2#state{hibernate=false}]);
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handler_before_loop(HandlerState, Req, State) ->
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State2 = handler_loop_timeout(State),
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handler_loop(HandlerState, Req, State2).
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@ -273,7 +274,7 @@ handler_loop_timeout(State=#state{loop_timeout=Timeout,
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erlang:send_after(Timeout, self(), {?MODULE, timeout, TRef}),
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State#state{loop_timeout_ref=TRef}.
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-spec handler_loop(any(), #http_req{}, #state{}) -> ok.
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-spec handler_loop(any(), #http_req{}, #state{}) -> ok | none().
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handler_loop(HandlerState, Req, State=#state{loop_timeout_ref=TRef}) ->
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receive
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{?MODULE, timeout, TRef} ->
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@ -284,7 +285,7 @@ handler_loop(HandlerState, Req, State=#state{loop_timeout_ref=TRef}) ->
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handler_call(HandlerState, Req, State, Message)
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end.
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-spec handler_call(any(), #http_req{}, #state{}, any()) -> ok.
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-spec handler_call(any(), #http_req{}, #state{}, any()) -> ok | none().
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handler_call(HandlerState, Req, State=#state{handler={Handler, Opts}},
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Message) ->
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try Handler:info(Message, Req, HandlerState) of
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@ -319,7 +320,7 @@ handler_terminate(HandlerState, Req, #state{handler={Handler, Opts}}) ->
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HandlerState, Req, erlang:get_stacktrace()])
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end.
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-spec next_request(any(), #http_req{}, #state{}) -> ok.
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-spec next_request(any(), #http_req{}, #state{}) -> ok | none().
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next_request(HandlerState, Req=#http_req{connection=Conn, buffer=Buffer},
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State) ->
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HandlerRes = handler_terminate(HandlerState, Req, State),
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@ -64,7 +64,7 @@
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%% You do not need to call this function manually. To upgrade to the WebSocket
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%% protocol, you simply need to return <em>{upgrade, protocol, {@module}}</em>
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%% in your <em>cowboy_http_handler:init/3</em> handler function.
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-spec upgrade(pid(), module(), any(), #http_req{}) -> ok.
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-spec upgrade(pid(), module(), any(), #http_req{}) -> ok | none().
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upgrade(ListenerPid, Handler, Opts, Req) ->
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cowboy_listener:move_connection(ListenerPid, websocket, self()),
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case catch websocket_upgrade(#state{handler=Handler, opts=Opts}, Req) of
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@ -110,7 +110,7 @@ websocket_upgrade(<< Version >>, State, Req)
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{ok, State#state{version=Version - $0, origin=Origin,
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challenge=Challenge}, Req4}.
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-spec handler_init(#state{}, #http_req{}) -> ok.
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-spec handler_init(#state{}, #http_req{}) -> ok | none().
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handler_init(State=#state{handler=Handler, opts=Opts},
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Req=#http_req{transport=Transport}) ->
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try Handler:websocket_init(Transport:name(), Req, Opts) of
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@ -160,7 +160,7 @@ upgrade_denied(Req=#http_req{socket=Socket, transport=Transport,
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upgrade_terminate(#http_req{socket=Socket, transport=Transport}) ->
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Transport:close(Socket).
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-spec websocket_handshake(#state{}, #http_req{}, any()) -> ok.
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-spec websocket_handshake(#state{}, #http_req{}, any()) -> ok | none().
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websocket_handshake(State=#state{version=0, origin=Origin,
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challenge=Challenge}, Req=#http_req{transport=Transport,
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raw_host=Host, port=Port, raw_path=Path, raw_qs=QS}, HandlerState) ->
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@ -185,7 +185,7 @@ websocket_handshake(State=#state{challenge=Challenge},
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handler_before_loop(State#state{messages=Transport:messages()},
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Req2, HandlerState, <<>>).
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-spec handler_before_loop(#state{}, #http_req{}, any(), binary()) -> ok.
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-spec handler_before_loop(#state{}, #http_req{}, any(), binary()) -> ok | none().
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handler_before_loop(State=#state{hibernate=true},
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Req=#http_req{socket=Socket, transport=Transport},
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HandlerState, SoFar) ->
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@ -210,7 +210,7 @@ handler_loop_timeout(State=#state{timeout=Timeout, timeout_ref=PrevRef}) ->
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State#state{timeout_ref=TRef}.
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%% @private
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-spec handler_loop(#state{}, #http_req{}, any(), binary()) -> ok.
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-spec handler_loop(#state{}, #http_req{}, any(), binary()) -> ok | none().
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handler_loop(State=#state{messages={OK, Closed, Error}, timeout_ref=TRef},
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Req=#http_req{socket=Socket}, HandlerState, SoFar) ->
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receive
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@ -230,7 +230,7 @@ handler_loop(State=#state{messages={OK, Closed, Error}, timeout_ref=TRef},
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SoFar, websocket_info, Message, fun handler_before_loop/4)
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end.
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-spec websocket_data(#state{}, #http_req{}, any(), binary()) -> ok.
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-spec websocket_data(#state{}, #http_req{}, any(), binary()) -> ok | none().
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%% No more data.
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websocket_data(State, Req, HandlerState, <<>>) ->
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handler_before_loop(State, Req, HandlerState, <<>>);
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@ -284,14 +284,14 @@ websocket_data(State, Req, HandlerState, _Bad) ->
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%% hybi unmasking.
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-spec websocket_unmask(#state{}, #http_req{}, any(), binary(),
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opcode(), binary(), mask_key()) -> ok.
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opcode(), binary(), mask_key()) -> ok | none().
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websocket_unmask(State, Req, HandlerState, RemainingData,
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Opcode, Payload, MaskKey) ->
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websocket_unmask(State, Req, HandlerState, RemainingData,
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Opcode, Payload, MaskKey, <<>>).
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-spec websocket_unmask(#state{}, #http_req{}, any(), binary(),
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opcode(), binary(), mask_key(), binary()) -> ok.
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opcode(), binary(), mask_key(), binary()) -> ok | none().
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websocket_unmask(State, Req, HandlerState, RemainingData,
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Opcode, << O:32, Rest/bits >>, MaskKey, Acc) ->
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T = O bxor MaskKey,
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@ -322,7 +322,7 @@ websocket_unmask(State, Req, HandlerState, RemainingData,
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%% hybi dispatching.
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-spec websocket_dispatch(#state{}, #http_req{}, any(), binary(),
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opcode(), binary()) -> ok.
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opcode(), binary()) -> ok | none().
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%% @todo Fragmentation.
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%~ websocket_dispatch(State, Req, HandlerState, RemainingData, 0, Payload) ->
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%% Text frame.
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@ -350,7 +350,7 @@ websocket_dispatch(State, Req, HandlerState, RemainingData, 10, Payload) ->
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websocket_handle, {pong, Payload}, fun websocket_data/4).
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-spec handler_call(#state{}, #http_req{}, any(), binary(),
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atom(), any(), fun()) -> ok.
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atom(), any(), fun()) -> ok | none().
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handler_call(State=#state{handler=Handler, opts=Opts}, Req, HandlerState,
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RemainingData, Callback, Message, NextState) ->
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try Handler:Callback(Message, Req, HandlerState) of
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