-} Grammar;
-typedef struct
-{
- GObjectClass parent;
-} GrammarClass;
-
-GType grammar_get_type ();
-
-symbol_t* symbol_new (gboolean, gint);
-
-rule_t* grammar_rule_new (Grammar*, symbol_t*);
-void grammar_rule_append (rule_t*, symbol_t*);
-GList* grammar_get_rules (Grammar*, symbol_t*);
+} grammar_t;
+
+symbol_t* symbol_new (gboolean, GQuark);
+symbol_t* symbol_copy (symbol_t*);
+guint symbol_hash (gconstpointer);
+gboolean symbol_equal (gconstpointer, gconstpointer);
+gint symbol_cmp (symbol_t*, symbol_t*);
+
+rule_t* rule_new ();
+rule_t* rule_copy (rule_t*);
+gint rule_cmp (rule_t*, rule_t*);
+gboolean rule_equal (gconstpointer, gconstpointer);
+guint rule_hash (gconstpointer);
+symbol_t* rule_pop (rule_t*);
+void rule_append (rule_t*, symbol_t*);
+void rule_delete (rule_t*);
+
+grammar_t* grammar_new ();
+rule_t* grammar_rule_new (grammar_t*, symbol_t*);
+GList* grammar_get_rules (grammar_*, symbol_t*);