src/symlist.h

   1 /* Lists of symbols for Bison
   2
   3    Copyright (C) 2002 Free Software Foundation, Inc.
   4
   5    This file is part of Bison, the GNU Compiler Compiler.
   6
   7    Bison is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    Bison is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Bison; see the file COPYING.  If not, write to
  19    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef SYMLIST_H_
  23 # define SYMLIST_H_
  24
  25 # include "location.h"
  26 # include "symtab.h"
  27
  28 typedef struct symbol_list
  29 {
  30   struct symbol_list *next;
  31   symbol *sym;
  32   location location;
  33
  34   /* The action is attached to the LHS of a rule. */
  35   const char *action;
  36   location action_location;
  37
  38   symbol *ruleprec;
  39   int dprec;
  40   int merger;
  41 } symbol_list;
  42
  43
  44 /* Create a list containing SYM at LOC.  */
  45 symbol_list *symbol_list_new (symbol *sym, location loc);
  46
  47 /* Prepend SYM at LOC to the LIST.  */
  48 symbol_list *symbol_list_prepend (symbol_list *list,
  49                                   symbol *sym,
  50                                   location loc);
  51
  52 /* Free the LIST, but not the symbols it contains.  */
  53 void symbol_list_free (symbol_list *list);
  54
  55 /* Return its length. */
  56 unsigned int symbol_list_length (symbol_list *list);
  57
  58 /* Get the data type (alternative in the union) of the value for
  59    symbol N in rule RULE.  */
  60 uniqstr symbol_list_n_type_name_get (symbol_list *rp, location loc, int n);
  61
  62 #endif /* !SYMLIST_H_ */