Added some debugging

[cascardo/grammar.git] / first.c

diff --git a/first.c b/first.c
index da7d344..895ad2c 100644 (file)
--- a/first.c
+++ b/first.c
@@ -548,3 +548,27 @@ GList* first_rule (GHashTable* first, rule_t* rule)
   return l;
   
 }
+
+void first_print_symbol (gpointer key, gpointer val, gpointer data)
+{
+  symbol_t* symbol;
+  symbol = (symbol_t*) key;
+  fprintf (stdout, "%s\n", g_quark_to_string (symbol->value));
+}
+
+void first_print_set (gpointer key, gpointer val, gpointer data)
+{
+  symbol_t* symbol;
+  first_set_t* first_set;
+  symbol = (symbol_t*) key;
+  first_set = (first_set_t*) val;
+  fprintf (stdout, "FIRST of %s:\n", g_quark_to_string (symbol->value));
+  if (first_set->has_empty)
+    fprintf (stdout, "empty symbol\n");
+  g_hash_table_foreach (first_set->terminals, first_print_symbol, NULL);
+}
+
+void first_print (GHashTable* first)
+{
+  g_hash_table_foreach (first, first_print_set, NULL);
+}