[gtk/matthiasc/css-change-tracking-2: 3/3] Remove no longer used code

[Matthias Clasen <matthiasc src gnome org>]

commit 28073cbd670bde3fd0f063e6e0a39e84eb72d850
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 15 17:12:51 2020 -0500

    Remove no longer used code
    
    We no longer consult the selector tree to find changes,
    so this code is no longer needed.

 gtk/gtkcssselector.c        | 68 ---------------------------------------------
 gtk/gtkcssselectorprivate.h |  2 --
 2 files changed, 70 deletions(-)
---
diff --git a/gtk/gtkcssselector.c b/gtk/gtkcssselector.c
index 8b10e5935e..e260cf159c 100644
--- a/gtk/gtkcssselector.c
+++ b/gtk/gtkcssselector.c
@@ -1877,80 +1877,12 @@ _gtk_css_selector_tree_match_all (const GtkCssSelectorTree *tree,
   return array;
 }
 
-/* When checking for changes via the tree we need to know if a rule further
-   down the tree matched, because if so we need to add "our bit" to the
-   Change. For instance in a match like *.class:active we'll
-   get a tree that first checks :active, if that matches we continue down
-   to the tree, and if we get a match we add CHANGE_CLASS. However, the
-   end of the tree where we have a match is an ANY which doesn't actually
-   modify the change, so we don't know if we have a match or not. We fix
-   this by setting GTK_CSS_CHANGE_GOT_MATCH which lets us guarantee
-   that change != 0 on any match. */
-#define GTK_CSS_CHANGE_GOT_MATCH GTK_CSS_CHANGE_RESERVED_BIT
-
-static GtkCssChange
-gtk_css_selector_tree_collect_change (const GtkCssSelectorTree *tree)
-{
-  GtkCssChange change = 0;
-  const GtkCssSelectorTree *prev;
-
-  for (prev = gtk_css_selector_tree_get_previous (tree);
-       prev != NULL;
-       prev = gtk_css_selector_tree_get_sibling (prev))
-    change |= gtk_css_selector_tree_collect_change (prev);
-
-  change = tree->selector.class->get_change (&tree->selector, change);
-
-  return change;
-}
-
-static GtkCssChange
-gtk_css_selector_tree_get_change (const GtkCssSelectorTree *tree,
-                                 const GtkCssMatcher      *matcher)
-{
-  GtkCssChange change = 0;
-  const GtkCssSelectorTree *prev;
-
-  if (!gtk_css_selector_match (&tree->selector, matcher))
-    return 0;
-
-  if (!tree->selector.class->is_simple)
-    return gtk_css_selector_tree_collect_change (tree) | GTK_CSS_CHANGE_GOT_MATCH;
-
-  for (prev = gtk_css_selector_tree_get_previous (tree);
-       prev != NULL;
-       prev = gtk_css_selector_tree_get_sibling (prev))
-    change |= gtk_css_selector_tree_get_change (prev, matcher);
-
-  if (change || gtk_css_selector_tree_get_matches (tree))
-    change = tree->selector.class->get_change (&tree->selector, change & ~GTK_CSS_CHANGE_GOT_MATCH) | 
GTK_CSS_CHANGE_GOT_MATCH;
-
-  return change;
-}
-
 gboolean
 _gtk_css_selector_tree_is_empty (const GtkCssSelectorTree *tree)
 {
   return tree == NULL;
 }
 
-GtkCssChange
-_gtk_css_selector_tree_get_change_all (const GtkCssSelectorTree *tree,
-                                      const GtkCssMatcher *matcher)
-{
-  GtkCssChange change;
-
-  change = 0;
-
-  /* no need to foreach here because we abort for non-simple selectors */
-  for (; tree != NULL;
-       tree = gtk_css_selector_tree_get_sibling (tree))
-    change |= gtk_css_selector_tree_get_change (tree, matcher);
-
-  /* Never return reserved bit set */
-  return change & ~GTK_CSS_CHANGE_RESERVED_BIT;
-}
-
 #ifdef PRINT_TREE
 static void
 _gtk_css_selector_tree_print (const GtkCssSelectorTree *tree, GString *str, char *prefix)
diff --git a/gtk/gtkcssselectorprivate.h b/gtk/gtkcssselectorprivate.h
index 6f35917c6e..7b7ba1073c 100644
--- a/gtk/gtkcssselectorprivate.h
+++ b/gtk/gtkcssselectorprivate.h
@@ -43,8 +43,6 @@ int               _gtk_css_selector_compare         (const GtkCssSelector   *a,
 void         _gtk_css_selector_tree_free             (GtkCssSelectorTree       *tree);
 GPtrArray *  _gtk_css_selector_tree_match_all        (const GtkCssSelectorTree *tree,
                                                      const GtkCssMatcher      *matcher);
-GtkCssChange _gtk_css_selector_tree_get_change_all   (const GtkCssSelectorTree *tree,
-                                                     const GtkCssMatcher *matcher);
 void         _gtk_css_selector_tree_match_print      (const GtkCssSelectorTree *tree,
                                                      GString                  *str);
 gboolean     _gtk_css_selector_tree_is_empty         (const GtkCssSelectorTree *tree) G_GNUC_CONST;