Add comments to states.

source/appstates/DataLoadingState.cpp

@@ -8,6 +8,8 @@ namespace
     constexpr int SCREEN_CENTER = 640;
 }
 
+//                      ---- Construction ----
+
 DataLoadingState::DataLoadingState(data::DataContext &context,
                                    DestructFunction destructFunction,
                                    sys::threadpool::JobFunction function,
@@ -20,6 +22,8 @@ DataLoadingState::DataLoadingState(data::DataContext &context,
     m_task = std::make_unique<sys::Task>(function, taskData);
 }
 
+//                      ---- Public functions ----
+
 void DataLoadingState::update()
 {
     BaseTask::update_loading_glyph();
@@ -44,6 +48,8 @@ void DataLoadingState::render()
     BaseTask::render_loading_glyph();
 }
 
+//                      ---- Private functions ----
+
 void DataLoadingState::initialize_static_members()
 {
     if (sm_jksvIcon) { return; }