src/reader.h

   1 /* Input parser for Bison
   2
   3    Copyright (C) 2000, 2001, 2002, 2003, 2005 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 READER_H_
  23 # define READER_H_
  24
  25 # include "location.h"
  26 # include "symlist.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 } merger_list;
  36
  37 /* From the scanner.  */
  38 extern FILE *gram_in;
  39 extern int gram__flex_debug;
  40 extern boundary scanner_cursor;
  41 extern int max_left_semantic_context;
  42 void scanner_initialize (void);
  43 void scanner_free (void);
  44 void scanner_last_string_free (void);
  45
  46 /* These are declared by the scanner, but not used.  We put them here
  47    to pacify "make syntax-check".  */
  48 extern FILE *gram_out;
  49 extern int gram_lineno;
  50
  51 # define YY_DECL int gram_lex (YYSTYPE *val, location *loc)
  52 YY_DECL;
  53
  54
  55 /* From the parser.  */
  56 extern int gram_debug;
  57 int gram_parse (void);
  58 char const *token_name (int);
  59
  60
  61 /* From reader.c. */
  62 void grammar_start_symbol_set (symbol *sym, location loc);
  63 void prologue_augment (const char *prologue, location loc);
  64 void grammar_current_rule_begin (symbol *lhs, location loc);
  65 void grammar_current_rule_end (location loc);
  66 void grammar_current_rule_prec_set (symbol *precsym, location loc);
  67 void grammar_current_rule_dprec_set (int dprec, location loc);
  68 void grammar_current_rule_merge_set (uniqstr name, location loc);
  69 void grammar_current_rule_symbol_append (symbol *sym, location loc);
  70 void grammar_current_rule_action_append (const char *action, location loc);
  71 extern symbol_list *current_rule;
  72 void reader (void);
  73 void free_merger_functions (void);
  74
  75 extern merger_list *merge_functions;
  76
  77 /* Was %union seen?  */
  78 extern bool typed;
  79
  80 /* Should rules have a default precedence?  */
  81 extern bool default_prec;
  82
  83 #endif /* !READER_H_ */