src/reader.h

   1 /* Input parser for Bison
   2
   3    Copyright (C) 2000-2003, 2005-2007, 2009-2015 Free Software
   4    Foundation, Inc.
   5
   6    This file is part of Bison, the GNU Compiler Compiler.
   7
   8    This program 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 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef READER_H_
  22 # define READER_H_
  23
  24 # include "location.h"
  25 # include "symlist.h"
  26 # include "named-ref.h"
  27
  28 # include "parse-gram.h"
  29
  30 typedef struct merger_list
  31 {
  32   struct merger_list* next;
  33   uniqstr name;
  34   uniqstr type;
  35   location type_declaration_location;
  36 } merger_list;
  37
  38 /* From the parser.  */
  39 extern int gram_debug;
  40 int gram_parse (void);
  41 char const *token_name (int type);
  42
  43
  44 /* From reader.c. */
  45 void grammar_start_symbol_set (symbol *sym, location loc);
  46 void grammar_current_rule_begin (symbol *lhs, location loc,
  47                                  named_ref *lhs_named_ref);
  48 void grammar_current_rule_end (location loc);
  49 void grammar_midrule_action (void);
  50 /* Apply %empty to the current rule.  */
  51 void grammar_current_rule_empty_set (location loc);
  52 void grammar_current_rule_prec_set (symbol *precsym, location loc);
  53 void grammar_current_rule_dprec_set (int dprec, location loc);
  54 void grammar_current_rule_merge_set (uniqstr name, location loc);
  55 void grammar_current_rule_symbol_append (symbol *sym, location loc,
  56                                          named_ref *nref);
  57 void grammar_current_rule_action_append (const char *action, location loc,
  58                                          named_ref *nref, bool);
  59 void reader (void);
  60 void free_merger_functions (void);
  61
  62 extern merger_list *merge_functions;
  63
  64 /* Was %union seen?  */
  65 extern bool union_seen;
  66
  67 /* Was a tag seen?  */
  68 extern bool tag_seen;
  69
  70 /* Should rules have a default precedence?  */
  71 extern bool default_prec;
  72
  73 #endif /* !READER_H_ */