* Comment fixes.

[bison.git] / src / symlist.h

diff --git a/src/symlist.h b/src/symlist.h
index 4f7557017f489dc065f3c3e812fa9e5b817fed58..0423d016d12046ae000292261752fc65c78f8744 100644 (file)
--- a/src/symlist.h
+++ b/src/symlist.h
@@ -1,5 +1,6 @@
 /* Lists of symbols for Bison
-   Copyright (C) 2002  Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -15,48 +16,68 @@
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 #ifndef SYMLIST_H_
 # define SYMLIST_H_
 
-# include "symtab.h"
 # include "location.h"
+# include "symtab.h"
 
-typedef struct symbol_list_s
+/* A list of symbols, used during the parsing to store the rules.  */
+typedef struct symbol_list
 {
-  struct symbol_list_s *next;
-  symbol_t *sym;
-  location_t location;
+  /* The symbol.  */
+  symbol *sym;
+  location location;
+
+  /* If this symbol is the generated lhs for a mid-rule, a pointer to
+     that mid-rule.  */
+  struct symbol_list *midrule;
 
   /* The action is attached to the LHS of a rule. */
   const char *action;
-  location_t action_location;
+  location action_location;
+
+  /* Whether this symbol's value is used in the current action. */
+  bool used;
 
-  symbol_t *ruleprec;
+  /* Precedence/associativity.  */
+  symbol *ruleprec;
   int dprec;
   int merger;
-} symbol_list_t;
 
+  /* The list.  */
+  struct symbol_list *next;
+} symbol_list;
 
-/* Create a list containing SYMBOL at LOCATION.  */
-symbol_list_t *symbol_list_new (symbol_t *sym, location_t location);
 
-/* Prepend SYMBOL at LOCATION to the LIST.  */
-symbol_list_t * symbol_list_prepend (symbol_list_t *list,
-                                    symbol_t *symbol,
-                                    location_t location);
+/* Create a list containing SYM at LOC.  */
+symbol_list *symbol_list_new (symbol *sym, location loc);
+
+/* Print it.  */
+void symbol_list_print (const symbol_list *l, FILE *f);
+
+/* Prepend SYM at LOC to the 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_t *list);
+void symbol_list_free (symbol_list *l);
 
 /* Return its length. */
-unsigned int symbol_list_length (symbol_list_t *list);
+unsigned int symbol_list_length (const 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.  */
-char *symbol_list_n_type_name_get (symbol_list_t *rule,
-                                  location_t location, 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_ */