Fix some memory leaks.

[bison.git] / src / symlist.h

diff --git a/src/symlist.h b/src/symlist.h
index 6c2fd6138de082269c25d58d522c4c954c42277b..e02c9e4f72d9cd147456a124d7cbce70975985bf 100644 (file)
--- a/src/symlist.h
+++ b/src/symlist.h
@@ -4,20 +4,18 @@
 
    This file is part of Bison, the GNU Compiler Compiler.
 
-   Bison is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   Bison is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef SYMLIST_H_
 # define SYMLIST_H_
@@ -25,6 +23,7 @@
 # include "location.h"
 # include "scan-code.h"
 # include "symtab.h"
+# include "named-ref.h"
 
 /* A list of symbols, used during the parsing to store the rules.  */
 typedef struct symbol_list
@@ -50,6 +49,9 @@ typedef struct symbol_list
   } content;
   location location;
 
+  /* Proper location of the symbol, not all the rule */
+  location sym_loc;
+
   /* 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;
@@ -61,12 +63,9 @@ typedef struct symbol_list
   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 action_location;
-
-  /* Whether this symbol's value is used in the current action.  */
-  bool used;
+  /* The action is attached to the LHS of a rule, but action properties for
+   * each RHS are also stored here.  */
+  code_props action_props;
 
   /* Precedence/associativity.  */
   symbol *ruleprec;
@@ -74,6 +73,9 @@ typedef struct symbol_list
   int merger;
   location merger_declaration_location;
 
+  /* Named reference. */
+  named_ref *named_ref;
+
   /* The list.  */
   struct symbol_list *next;
 } symbol_list;
@@ -112,6 +114,9 @@ symbol_list *symbol_list_n_get (symbol_list *l, int n);
    symbol N in rule RULE.  */
 uniqstr symbol_list_n_type_name_get (symbol_list *l, location loc, int n);
 
+/* Check whether the node is a border element of a rule. */
+bool symbol_list_null (symbol_list *node);
+
 /** Set the \c \%destructor for \c node as \c code at \c loc.  */
 void symbol_list_destructor_set (symbol_list *node, char const *code,
                                  location loc);