diff --git a/gtk/css/gtkcsstokenizer.c b/gtk/css/gtkcsstokenizer.c
index 719358fd36..05879eae38 100644
--- a/gtk/css/gtkcsstokenizer.c
+++ b/gtk/css/gtkcsstokenizer.c
@@ -36,6 +36,9 @@ struct _GtkCssTokenizer
   const char            *end;
 
   GtkCssLocation         position;
+
+  GtkCssLocation         saved_position;
+  const char            *saved_data;
 };
 
 void
@@ -1484,3 +1487,23 @@ gtk_css_tokenizer_read_token (GtkCssTokenizer  *tokenizer,
     }
 }
 
+void
+gtk_css_tokenizer_save (GtkCssTokenizer *tokenizer)
+{
+  g_assert (!tokenizer->saved_data);
+
+  tokenizer->saved_position = tokenizer->position;
+  tokenizer->saved_data = tokenizer->data;
+}
+
+void
+gtk_css_tokenizer_restore (GtkCssTokenizer *tokenizer)
+{
+  g_assert (tokenizer->saved_data);
+
+  tokenizer->position = tokenizer->saved_position;
+  tokenizer->data = tokenizer->saved_data;
+
+  gtk_css_location_init (&tokenizer->saved_position);
+  tokenizer->saved_data = NULL;
+}
diff --git a/gtk/css/gtkcsstokenizerprivate.h b/gtk/css/gtkcsstokenizerprivate.h
index 83f245b2bc..95630b54ad 100644
--- a/gtk/css/gtkcsstokenizerprivate.h
+++ b/gtk/css/gtkcsstokenizerprivate.h
@@ -148,5 +148,8 @@ gboolean                gtk_css_tokenizer_read_token            (GtkCssTokenizer
                                                                  GtkCssToken            *token,
                                                                  GError                **error);
 
+void                     gtk_css_tokenizer_save                 (GtkCssTokenizer        *tokenizer);
+void                     gtk_css_tokenizer_restore              (GtkCssTokenizer        *tokenizer);
+
 G_END_DECLS