src/reader.h

   1 /* Input parser for bison
   2    Copyright (C) 2000, 2001, 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 READER_H_
  22 # define READER_H_
  23
  24 # include "location.h"
  25 # include "symlist.h"
  26
  27 # include "parse-gram.h"
  28
  29 typedef struct merger_list
  30 {
  31   struct merger_list* next;
  32   uniqstr name;
  33   uniqstr type;
  34 } merger_list;
  35
  36 /* From the scanner.  */
  37 extern FILE *gram_in;
  38 extern int gram__flex_debug;
  39 extern boundary scanner_cursor;
  40 void scanner_initialize (void);
  41 void scanner_free (void);
  42 void scanner_last_string_free (void);
  43
  44 # define YY_DECL int gram_lex (yystype *val, location *loc)
  45 YY_DECL;
  46
  47
  48 /* From the parser.  */
  49 extern int gram_debug;
  50 int gram_parse (void);
  51
  52 /* The sort of braced code we are in.  */
  53 typedef enum
  54   {
  55     action_braced_code,
  56     destructor_braced_code,
  57     printer_braced_code
  58   } braced_code;
  59 /* FIXME: This is really a dirty hack which demonstrates that we
  60    should probably not try to parse the actions now.  */
  61 extern braced_code current_braced_code;
  62
  63
  64 /* From reader.c. */
  65 void grammar_start_symbol_set (symbol *s, location loc);
  66 void prologue_augment (const char *prologue, location loc);
  67 void epilogue_augment (const char *epilogue, location loc);
  68 void grammar_symbol_append (symbol *s, location loc);
  69 void grammar_rule_begin (symbol *lhs, location loc);
  70 void grammar_rule_end (location loc);
  71 void grammar_midrule_action (void);
  72 void grammar_current_rule_prec_set (symbol *precsym, location loc);
  73 void grammar_current_rule_dprec_set (int dprec, location loc);
  74 void grammar_current_rule_merge_set (uniqstr name, location loc);
  75
  76 void grammar_current_rule_symbol_append (symbol *sym, location loc);
  77 void grammar_current_rule_action_append (const char *action, location loc);
  78 extern symbol_list *current_rule;
  79 void reader (void);
  80 void free_merger_functions (void);
  81
  82 extern merger_list *merge_functions;
  83
  84 extern int typed;
  85
  86 #endif /* !READER_H_ */