[gtk/matthiasc/for-master: 7/7] Refine the selector tree printing

[Matthias Clasen <matthiasc src gnome org>]

commit a463dccd81a0f542afd120e7feb48457663ae507
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jan 18 14:18:47 2020 -0500

    Refine the selector tree printing
    
    Also show which tree nodes have exact matches.

 gtk/gtkcssselector.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/gtk/gtkcssselector.c b/gtk/gtkcssselector.c
index c83f42f419..dc35d839db 100644
--- a/gtk/gtkcssselector.c
+++ b/gtk/gtkcssselector.c
@@ -1970,6 +1970,7 @@ _gtk_css_selector_tree_print (const GtkCssSelectorTree *tree, GString *str, char
 {
   gboolean first = TRUE;
   int len, i;
+  gpointer *matches;
 
   for (; tree != NULL; tree = gtk_css_selector_tree_get_sibling (tree), first = FALSE)
     {
@@ -1993,6 +1994,16 @@ _gtk_css_selector_tree_print (const GtkCssSelectorTree *tree, GString *str, char
 
       len = str->len;
       tree->selector.class->print (&tree->selector, str);
+      matches = gtk_css_selector_tree_get_matches (tree);
+      if (matches)
+        {
+          int n;
+          for (n = 0; matches[n] != NULL; n++) ;
+          if (n == 1)
+            g_string_append (str, " (1 match)");
+          else
+            g_string_append_printf (str, " (%d matches)", n);
+        }
       len = str->len - len;
 
       if (gtk_css_selector_tree_get_previous (tree))