Issue 5013 - Use const JsValue and pass reference where applicable

src/WebRequestJsObject.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 11 matching lines @@
 #include "JsContext.h"
 #include "Thread.h"
 #include "Utils.h"
 #include "WebRequestJsObject.h"
 
 namespace
 {
   class WebRequestThread : public AdblockPlus::Thread
   {
   public:
-    WebRequestThread(const AdblockPlus::JsEnginePtr& jsEngine, const AdblockPlus::JsValueList& arguments)
+    WebRequestThread(const AdblockPlus::JsEnginePtr& jsEngine, const AdblockPlus::JsConstValueList& arguments)
         : Thread(true), jsEngine(jsEngine), url(arguments[0]->AsString())
     {
       if (!url.length())
         throw std::runtime_error("Invalid string passed as first argument to GET");
 
       {
-        AdblockPlus::JsValuePtr headersObj = arguments[1];
+        AdblockPlus::JsConstValuePtr headersObj = arguments[1];
         if (!headersObj->IsObject())
           throw std::runtime_error("Second argument to GET must be an object");
 
         std::vector<std::string> properties = headersObj->GetOwnPropertyNames();
         for (const auto& header : properties)
         {
           std::string headerValue = headersObj->GetProperty(header)->AsString();
           if (header.length() && headerValue.length())
             headers.push_back(std::pair<std::string, std::string>(header, headerValue));
         }
@@ skipping 33 matching lines @@
 
       AdblockPlus::JsConstValueList params;
       params.push_back(resultObject);
       callback->Call(params);
     }
 
   private:
     AdblockPlus::JsEnginePtr jsEngine;
     std::string url;
     AdblockPlus::HeaderList headers;
-    AdblockPlus::JsValuePtr callback;
+    AdblockPlus::JsConstValuePtr callback;
   };
 
   v8::Handle<v8::Value> GETCallback(const v8::Arguments& arguments)
   {
     WebRequestThread* thread;
     try
     {
       AdblockPlus::JsEnginePtr jsEngine = AdblockPlus::JsEngine::FromArguments(arguments);
-      AdblockPlus::JsValueList converted = jsEngine->ConvertArguments(arguments);
+      AdblockPlus::JsConstValueList converted = jsEngine->ConvertArguments(arguments);
       if (converted.size() != 3u)
         throw std::runtime_error("GET requires exactly 3 arguments");
       thread = new WebRequestThread(jsEngine, converted);
     }
     catch (const std::exception& e)
     {
       using AdblockPlus::Utils::ToV8String;
       v8::Isolate* isolate = arguments.GetIsolate();
       return v8::ThrowException(ToV8String(isolate, e.what()));
     }
     thread->Start();
     return v8::Undefined();
   }
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::WebRequestJsObject::Setup(
     AdblockPlus::JsEngine& jsEngine, const AdblockPlus::JsValuePtr& obj)
 {
   obj->SetProperty("GET", jsEngine.NewCallback(::GETCallback));
   return obj;
 }