simplify the handling of <> and <*>'s code_props.

[bison.git] / src / symlist.h

diff --git a/src/symlist.h b/src/symlist.h
index 6acb982e3116e259ac70d08e7191c9af34594e0d..dd63408339b791d5d8a6890f584d9408889bd004 100644 (file)
--- a/src/symlist.h
+++ b/src/symlist.h
@@ -1,46 +1,58 @@
 /* Lists of symbols for Bison
 
-   Copyright (C) 2002, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2007, 2009-2012 Free Software Foundation,
+   Inc.
 
    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_
 
 # 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
 {
   /**
-   * Whether this node contains a symbol, a semantic type, or a
-   * \c \%symbol-default.
+   * Whether this node contains a symbol, a semantic type, a \c <*>, or a
+   * \c <>.
    */
-  enum { SYMLIST_SYMBOL, SYMLIST_TYPE, SYMLIST_DEFAULT } content_type;
+  enum {
+    SYMLIST_SYMBOL,
+    SYMLIST_TYPE
+  } content_type;
   union {
-    /** The symbol or \c NULL iff <tt>node_type = SYMLIST_SYMBOL</tt>.  */
+    /**
+     * The symbol or \c NULL iff
+     * <tt>symbol_list::content_type = SYMLIST_SYMBOL</tt>.
+     */
     symbol *sym;
-    /** The semantic type iff <tt>node_type = SYMLIST_TYPE</tt>.  */
-    uniqstr type_name;
+    /**
+     * The semantic type iff <tt>symbol_list::content_type = SYMLIST_TYPE</tt>.
+     */
+    semantic_type *sem_type;
   } 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;
@@ -52,12 +64,9 @@ 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;
@@ -65,6 +74,9 @@ typedef struct symbol_list
   int merger;
   location merger_declaration_location;
 
+  /* Named reference. */
+  named_ref *named_ref;
+
   /* The list.  */
   struct symbol_list *next;
 } symbol_list;
@@ -76,9 +88,6 @@ symbol_list *symbol_list_sym_new (symbol *sym, location loc);
 /** Create a list containing \c type_name at \c loc.  */
 symbol_list *symbol_list_type_new (uniqstr type_name, location loc);
 
-/** Create a list containing a \c \%symbol-default at \c loc.  */
-symbol_list *symbol_list_default_new (location loc);
-
 /** Print this list.
 
   \pre For every node \c n in the list, <tt>n->content_type =
@@ -101,15 +110,12 @@ 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);
 
-/** The item \c n in symbol list \c l is \c used.  */
-void symbol_list_n_used_set (symbol_list *l, int n, bool used);
-
-/** Set the \c \%destructor for \c node as \c destructor at \c loc.  */
-void symbol_list_destructor_set (symbol_list *node, const char *destructor,
-                                 location loc);
+/* Check whether the node is a border element of a rule. */
+bool symbol_list_null (symbol_list *node);
 
-/** Set the \c \%printer for \c node as \c printer at \c loc.  */
-void symbol_list_printer_set (symbol_list *node, const char *printer,
-                              location loc);
+/** Set the \c \%destructor or \c \%printer for \c node as \c code at
+    \c loc.  */
+void symbol_list_code_props_set (symbol_list *node, code_props_type kind,
+                                 location loc, char const *code);
 
 #endif /* !SYMLIST_H_ */