Add file name and line number when reporting exceptions

src/JsEngine.cpp

 #include <AdblockPlus.h>
 #include <sstream>
 
 #include "ConsoleJsObject.h"
 
 extern const char* jsSources[];
 
 namespace
 {
   v8::Handle<v8::Context> CreateContext(
     AdblockPlus::ErrorCallback& errorCallback)
   {
     const v8::HandleScope handleScope;
     const v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
     global->Set(v8::String::New("console"),
                 AdblockPlus::ConsoleJsObject::Create(errorCallback));
     return v8::Context::New(0, global);
   }
 
   void CheckTryCatch(const v8::TryCatch& tryCatch)
   {
     if (tryCatch.HasCaught())
-      throw AdblockPlus::JsError(tryCatch.Exception());
+      throw AdblockPlus::JsError(tryCatch.Exception(), tryCatch.Message());
   }
 
   std::string Slurp(std::istream& stream)
   {
     std::stringstream content;
     content << stream.rdbuf();
     return content.str();
   }
 }
 
-AdblockPlus::JsError::JsError(const v8::Handle<v8::Value> exception)
-  : std::runtime_error(*v8::String::AsciiValue(exception))
+AdblockPlus::JsError::JsError(const v8::Handle<v8::Value> exception,
+    const v8::Handle<v8::Message> message)
+  : std::runtime_error(toString(exception, message))
 {
 }
 
+std::string AdblockPlus::JsError::toString(const v8::Handle<v8::Value> exception,
+    const v8::Handle<v8::Message> message)
+{
+  std::stringstream error;
+  error << *v8::String::Utf8Value(exception);
+  if (!message.IsEmpty())
+  {
+    error << " at ";
+    error << *v8::String::Utf8Value(message->GetScriptResourceName());
+    error << ":";
+    error << message->GetLineNumber();
+  }
+  return error.str();
+}
+
 AdblockPlus::JsEngine::JsEngine(const FileReader* const fileReader,
                                 ErrorCallback* const errorCallback)
   : fileReader(fileReader), context(CreateContext(*errorCallback))
 {
   for (int i = 0; jsSources[i] && jsSources[i + 1]; i += 2)
     Evaluate(jsSources[i + 1], jsSources[i]);
 }
 
 v8::Handle<v8::Script> AdblockPlus::JsEngine::CompileScript(const char* source, const char* filename)
 {
@@ skipping 37 matching lines @@
   const v8::Local<v8::Value> result = function->Call(function, 0, 0);
   CheckTryCatch(tryCatch);
   const v8::String::AsciiValue ascii(result);
   return *ascii;
 }
 
 void AdblockPlus::JsEngine::Gc()
 {
   while (!v8::V8::IdleNotification());
 }