(reduce_grammar): Remove unnecessary cast to bool.

[bison.git] / src / symlist.h

diff --git a/src/symlist.h b/src/symlist.h
index 135a8cd17b71a3cb5a2a99ae155286eef3455cd9..ccd6110b8f0d2efec772e60f6bb5e0151cc21248 100644 (file)
--- a/src/symlist.h
+++ b/src/symlist.h
@@ -25,9 +25,10 @@
 # include "location.h"
 # include "symtab.h"
 
+/* A list of symbols, used during the parsing to store the rules.  */
 typedef struct symbol_list
 {
-  struct symbol_list *next;
+  /* The symbol.  */
   symbol *sym;
   location location;
 
@@ -35,9 +36,16 @@ typedef struct symbol_list
   const char *action;
   location action_location;
 
+  /* Whether this symbol's value is used in the current action. */
+  bool used;
+
+  /* Precedence/associativity.  */
   symbol *ruleprec;
   int dprec;
   int merger;
+
+  /* The list.  */
+  struct symbol_list *next;
 } symbol_list;
 
 
@@ -45,21 +53,27 @@ typedef struct symbol_list
 symbol_list *symbol_list_new (symbol *sym, location loc);
 
 /* Print it.  */
-void symbol_list_print (FILE *f, symbol_list *l);
+void symbol_list_print (symbol_list *l, FILE *f);
 
 /* Prepend SYM at LOC to the LIST.  */
-symbol_list *symbol_list_prepend (symbol_list *list,
+symbol_list *symbol_list_prepend (symbol_list *l,
                                  symbol *sym,
                                  location loc);
 
 /* Free the LIST, but not the symbols it contains.  */
-void symbol_list_free (symbol_list *list);
+void symbol_list_free (symbol_list *l);
 
 /* Return its length. */
-unsigned int symbol_list_length (symbol_list *list);
+unsigned int symbol_list_length (symbol_list *l);
+
+/* Get symbol N in symbol list L.  */
+symbol_list *symbol_list_n_get (symbol_list *l, int n);
 
 /* Get the data type (alternative in the union) of the value for
    symbol N in rule RULE.  */
-uniqstr symbol_list_n_type_name_get (symbol_list *rp, location loc, int n);
+uniqstr symbol_list_n_type_name_get (symbol_list *l, location loc, int n);
+
+/* The symbol N in symbol list L is USED.  */
+void symbol_list_n_used_set (symbol_list *l, int n, bool used);
 
 #endif /* !SYMLIST_H_ */