src/symlist.h

   1 /* Lists of symbols for Bison
   2    Copyright (C) 2002  Free Software Foundation, Inc.
   3
   4    This file is part of Bison, the GNU Compiler Compiler.
   5
   6    Bison is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    Bison is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with Bison; see the file COPYING.  If not, write to
  18    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef SYMLIST_H_
  22 # define SYMLIST_H_
  23
  24 # include "symtab.h"
  25 # include "location.h"
  26
  27 typedef struct symbol_list_s
  28 {
  29   struct symbol_list_s *next;
  30   symbol_t *sym;
  31   location_t location;
  32
  33   /* The action is attached to the LHS of a rule. */
  34   const char *action;
  35   location_t action_location;
  36
  37   symbol_t *ruleprec;
  38   int dprec;
  39   int merger;
  40 } symbol_list_t;
  41
  42
  43 /* Create a list containing SYMBOL at LOCATION.  */
  44 symbol_list_t *symbol_list_new (symbol_t *sym, location_t location);
  45
  46 /* Prepend SYMBOL at LOCATION to the LIST.  */
  47 symbol_list_t * symbol_list_prepend (symbol_list_t *list,
  48                                      symbol_t *symbol,
  49                                      location_t location);
  50
  51 /* Free the LIST, but not the symbols it contains.  */
  52 void symbol_list_free (symbol_list_t *list);
  53
  54 /* Return its length. */
  55 unsigned int symbol_list_length (symbol_list_t *list);
  56
  57 /* Get the data type (alternative in the union) of the value for
  58    symbol N in rule RULE.  */
  59 struniq_t symbol_list_n_type_name_get (symbol_list_t *rule,
  60                                    location_t location, int n);
  61
  62 #endif /* !SYMLIST_H_ */