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      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