Simplified JsEngine API, Call() and GetVariable() aren`t reallynecessary if Evaluate() returns a v…

src/JsEngine.cpp

 #include <AdblockPlus.h>
 #include <sstream>
 
 #include "GlobalJsObject.h"
 
 namespace
 {
   v8::Handle<v8::Context> CreateContext(
     AdblockPlus::ErrorCallback& errorCallback,
     AdblockPlus::WebRequest& webRequest)
   {
     const v8::Locker locker(v8::Isolate::GetCurrent());
     const v8::HandleScope handleScope;
     const v8::Handle<v8::ObjectTemplate> global =
       AdblockPlus::GlobalJsObject::Create(errorCallback, webRequest);
     return v8::Context::New(0, global);
   }
 
-  v8::Handle<v8::Script> CompileScript(const char* source, const char* filename)
+  v8::Handle<v8::Script> CompileScript(const std::string& source, const std::string& filename)
   {
-    const v8::Handle<v8::String> v8Source = v8::String::New(source);
-    if (filename && filename[0])
+    const v8::Handle<v8::String> v8Source = v8::String::New(source.c_str());
+    if (filename.length())
     {
-      const v8::Handle<v8::String> v8Filename = v8::String::New(filename);
+      const v8::Handle<v8::String> v8Filename = v8::String::New(filename.c_str());
       return v8::Script::Compile(v8Source, v8Filename);
     }
     else
       return v8::Script::Compile(v8Source);
   }
 
   void CheckTryCatch(const v8::TryCatch& tryCatch)
   {
     if (tryCatch.HasCaught())
       throw AdblockPlus::JsError(tryCatch.Exception(), tryCatch.Message());
@@ skipping 35 matching lines @@
 {
 }
 
 std::string AdblockPlus::JsEngine::Evaluate(const std::string& source,
     const std::string& filename)
 {
   const v8::Locker locker(v8::Isolate::GetCurrent());
   const v8::HandleScope handleScope;
   const v8::Context::Scope contextScope(context);
   const v8::TryCatch tryCatch;
-  const v8::Handle<v8::Script> script = CompileScript(source.c_str(), filename.c_str());
+  const v8::Handle<v8::Script> script = CompileScript(source, filename);
   CheckTryCatch(tryCatch);
   v8::Local<v8::Value> result = script->Run();
   CheckTryCatch(tryCatch);
   v8::String::Utf8Value resultString(result);
   return std::string(*resultString);
 }
 
 void AdblockPlus::JsEngine::Load(const std::string& scriptPath)
 {
   const std::auto_ptr<std::istream> file = fileReader->Read(scriptPath);
   if (!*file)
     throw std::runtime_error("Unable to load script " + scriptPath);
   Evaluate(Slurp(*file));
 }
 
 void AdblockPlus::JsEngine::Gc()
 {
   while (!v8::V8::IdleNotification());
 }