Provide access to the debuggee context from debug event listener

src/debug.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 506 matching lines @@
   bool is_event_;  // Does this message represent a debug event?
   DebugEvent event_;  // Debug event causing the break.
   bool running_;  // Will the VM start running after this event?
   Handle<JSObject> exec_state_;  // Current execution state.
   Handle<JSObject> event_data_;  // Data associated with the event.
   Handle<String> response_json_;  // Response JSON if message holds a response.
   v8::Debug::ClientData* client_data_;  // Client data passed with the request.
 };
 
 
+// Details of the debug event delivered to the debug event listener.
+class EventDetailsImpl : public v8::Debug::EventDetails {
+ public:
+  EventDetailsImpl(DebugEvent event,
+                   Handle<JSObject> exec_state,
+                   Handle<JSObject> event_data,
+                   Handle<Object> callback_data);
+  virtual DebugEvent GetEvent() const;
+  virtual v8::Handle<v8::Object> GetExecutionState() const;
+  virtual v8::Handle<v8::Object> GetEventData() const;
+  virtual v8::Handle<v8::Context> GetEventContext() const;
+  virtual v8::Handle<v8::Value> GetCallbackData() const;
+ private:
+  DebugEvent event_;  // Debug event causing the break.
+  Handle<JSObject> exec_state_;  // Current execution state.
+  Handle<JSObject> event_data_;  // Data associated with the event.
+  Handle<Object> callback_data_;  // User data passed with the callback when
+                                  // it was registered.
+};
+
+
 // Message send by user to v8 debugger or debugger output message.
 // In addition to command text it may contain a pointer to some user data
 // which are expected to be passed along with the command reponse to message
 // handler.
 class CommandMessage {
  public:
   static CommandMessage New(const Vector<uint16_t>& command,
                             v8::Debug::ClientData* data);
   CommandMessage();
   ~CommandMessage();
@@ skipping 369 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 #endif  // V8_DEBUG_H_