src/reader.h

   1 /* Input parser for Bison
   2
   3    Copyright (C) 2000, 2001, 2002, 2003, 2005, 2006 Free Software
   4    Foundation, Inc.
   5
   6    This file is part of Bison, the GNU Compiler Compiler.
   7
   8    Bison is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    Bison is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with Bison; see the file COPYING.  If not, write to
  20    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21    Boston, MA 02110-1301, USA.  */
  22
  23 #ifndef READER_H_
  24 # define READER_H_
  25
  26 # include "location.h"
  27 # include "symlist.h"
  28
  29 # include "parse-gram.h"
  30
  31 typedef struct merger_list
  32 {
  33   struct merger_list* next;
  34   uniqstr name;
  35   uniqstr type;
  36   location type_declaration_location;
  37 } merger_list;
  38
  39 /* From the parser.  */
  40 extern int gram_debug;
  41 int gram_parse (void);
  42 char const *token_name (int type);
  43
  44
  45 /* From reader.c. */
  46 void grammar_start_symbol_set (symbol *sym, location loc);
  47 void prologue_augment (const char *prologue, location loc, bool post);
  48 void grammar_current_rule_begin (symbol *lhs, location loc);
  49 void grammar_current_rule_end (location loc);
  50 void grammar_midrule_action (void);
  51 void grammar_current_rule_prec_set (symbol *precsym, location loc);
  52 void grammar_current_rule_dprec_set (int dprec, location loc);
  53 void grammar_current_rule_merge_set (uniqstr name, location loc);
  54 void grammar_current_rule_symbol_append (symbol *sym, location loc);
  55 void grammar_current_rule_action_append (const char *action, location loc);
  56 void reader (void);
  57 void free_merger_functions (void);
  58
  59 extern merger_list *merge_functions;
  60
  61 /* Was %union seen?  */
  62 extern bool union_seen;
  63
  64 /* Was a tag seen?  */
  65 extern bool tag_seen;
  66
  67 /* Should rules have a default precedence?  */
  68 extern bool default_prec;
  69
  70 #endif /* !READER_H_ */