Add context reset to the debugger.

- The context reset request message can be sent anytime from a client.
- After the message received the engine will call the cleanup and init
  when in the source waiting mode (which means the currently processed file will be executed).
- After the reinitialization is done, the engine will wait
  for a new client connection(rest of the work is the client's responsibility).

JerryScript-DCO-1.0-Signed-off-by: Imre Kiss kissi.szeged@partner.samsung.com

jerry-core/debugger/debugger.c

@@ -586,6 +586,25 @@ jerry_debugger_process_message (uint8_t *recv_buffer_p, /**< pointer the the rec
       return true;
     }
 
+    case JERRY_DEBUGGER_CONTEXT_RESET:
+    {
+      if (!(JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CLIENT_SOURCE_MODE))
+      {
+        jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Not in client source mode\n");
+        jerry_debugger_close_connection ();
+        return false;
+      }
+
+      JERRY_DEBUGGER_CHECK_PACKET_SIZE (jerry_debugger_receive_type_t);
+
+      JERRY_CONTEXT (debugger_flags) = (uint8_t) (JERRY_CONTEXT (debugger_flags) & ~JERRY_DEBUGGER_CLIENT_SOURCE_MODE);
+      JERRY_CONTEXT (debugger_flags) = (uint8_t) (JERRY_CONTEXT (debugger_flags) | JERRY_DEBUGGER_CONTEXT_RESET_MODE);
+
+      *resume_exec_p = true;
+
+      return true;
+    }
+
     default:
     {
       jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Unexpected message.");