1 //
2 //  Copyright (C) 2015 Google, Inc.
3 //
4 //  Licensed under the Apache License, Version 2.0 (the "License");
5 //  you may not use this file except in compliance with the License.
6 //  You may obtain a copy of the License at:
7 //
8 //  http://www.apache.org/licenses/LICENSE-2.0
9 //
10 //  Unless required by applicable law or agreed to in writing, software
11 //  distributed under the License is distributed on an "AS IS" BASIS,
12 //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 //  See the License for the specific language governing permissions and
14 //  limitations under the License.
15 //
16 
17 #pragma once
18 
19 #include <rapidjson/document.h>
20 
21 typedef void (*MFP)(rapidjson::Document&);
22 
23 // This class defines the functions that interact with the input JSON and
24 // correspondingly calls the facade associated with the input JSON doc. This
25 // class also contains wrapper functions to the actual SL4N Facades and does
26 // pre-verification before it directly interacts with the facade. The
27 // pre-verification includes matching parameter size and verifying each
28 // parameter type that is expected in the wrapping function.
29 class CommandReceiver {
30 
31  public:
32   CommandReceiver();
33   ~CommandReceiver();
34 
35   static void RegisterCommand(std::string name, MFP command);
36 
37   // Function that extracts the method/cmd parameter from the JSON doc and
38   // passes the document to the corresponding wrapper function.
39   void Call(rapidjson::Document& doc);
40 
41 };
42