widget: Refactor gtk_widget_class_set_template()

Don't call gbytes_get_data/get_size so often and exit early if the given
bytes is already precompiled.

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 98ff2a01e459109e8520dcaf5bc507ab98c59b25..239f7735e8b0e0df956a5b846ddb87b07bff7291 100644 (file)
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -10852,35 +10852,36 @@ out:
  * in the widget’s instance initializer.
  */
 void
-gtk_widget_class_set_template (GtkWidgetClass    *widget_class,
-                               GBytes            *template_bytes)
+gtk_widget_class_set_template (GtkWidgetClass *widget_class,
+                               GBytes         *template_bytes)
 {
+  GError *error = NULL;
   GBytes *data = NULL;
+  gconstpointer bytes_data;
+  gsize bytes_size;
 
   g_return_if_fail (GTK_IS_WIDGET_CLASS (widget_class));
   g_return_if_fail (widget_class->priv->template == NULL);
   g_return_if_fail (template_bytes != NULL);
 
   widget_class->priv->template = g_slice_new0 (GtkWidgetTemplate);
+  bytes_data = g_bytes_get_data (template_bytes, &bytes_size);
 
-  if (!_gtk_buildable_parser_is_precompiled (g_bytes_get_data (template_bytes, NULL), g_bytes_get_size (template_bytes)))
+  if (_gtk_buildable_parser_is_precompiled (bytes_data, bytes_size))
     {
-      GError *error = NULL;
+      widget_class->priv->template->data = g_bytes_ref (template_bytes);
+      return;
+    }
 
-      data = _gtk_buildable_parser_precompile (g_bytes_get_data (template_bytes, NULL),
-                                               g_bytes_get_size (template_bytes),
-                                               &error);
-      if (data == NULL)
-        {
-          g_warning ("Failed to precompile template for class %s: %s", G_OBJECT_CLASS_NAME (widget_class), error->message);
-          g_error_free (error);
-        }
+  data = _gtk_buildable_parser_precompile (bytes_data, bytes_size, &error);
+  if (data == NULL)
+    {
+      g_warning ("Failed to precompile template for class %s: %s", G_OBJECT_CLASS_NAME (widget_class), error->message);
+      g_error_free (error);
+      return;
     }
 
-  if (data)
-    widget_class->priv->template->data = data;
-  else
-    widget_class->priv->template->data = g_bytes_ref (template_bytes);
+  widget_class->priv->template->data = data;
 }
 
 /**