X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/56c47203421107ee019a20f3b56cfb967ad75bd2..47aee066ccabdb3aeb96735532167c551f8e7194:/src/symlist.h?ds=sidebyside

diff --git a/src/symlist.h b/src/symlist.h
index b41540ba..215fdf0a 100644
--- 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, 2006 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -15,46 +16,76 @@
 
    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 midrule but this is the rule in
+     whose rhs it appears, MIDRULE = a pointer to that midrule.  */
+  struct symbol_list *midrule;
+
+  /* If this symbol is the generated lhs for a midrule and this is that
+     midrule, MIDRULE_PARENT_RULE = a pointer to the rule in whose rhs it
+     appears, and MIDRULE_PARENT_RHS_INDEX = its rhs index (1-origin) in the
+     parent rule.  */
+  struct symbol_list *midrule_parent_rule;
+  int midrule_parent_rhs_index;
 
   /* 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;
-} symbol_list_t;
+  /* Precedence/associativity.  */
+  symbol *ruleprec;
+  int dprec;
+  int merger;
+  location merger_declaration_location;
 
+  /* The list.  */
+  struct symbol_list *next;
+} symbol_list;
 
-/* Create a list containing SYMBOL at LOCATION.  */
-symbol_list_t *symbol_list_new PARAMS ((symbol_t *sym, location_t location));
 
+/* Create a list containing SYM at LOC.  */
+symbol_list *symbol_list_new (symbol *sym, location loc);
 
-/* Prepend SYMBOL at LOCATION to the LIST.  */
-symbol_list_t * symbol_list_prepend PARAMS ((symbol_list_t *list,
-					     symbol_t *symbol,
-					     location_t location));
+/* 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 PARAMS ((symbol_list_t *list));
+void symbol_list_free (symbol_list *l);
 
+/* Return its length. */
+int symbol_list_length (symbol_list const *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 PARAMS ((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_ */