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 "symlist.h"
  25 # include "parse-gram.h"
  26
  27 typedef struct gram_control_s
  28 {
  29   int errcode;
  30 } gram_control_t;
  31
  32 /* From the scanner.  */
  33 extern FILE *gram_in;
  34 extern int gram__flex_debug;
  35 void scanner_last_string_free PARAMS ((void));
  36 void scanner_initialize PARAMS ((void));
  37 void scanner_free PARAMS ((void));
  38
  39 # define YY_DECL \
  40   int gram_lex (yystype *yylval, location_t *yylloc, \
  41                 gram_control_t *yycontrol)
  42 YY_DECL;
  43
  44
  45 /* From the parser.  */
  46 extern int gram_debug;
  47 void gram_error (gram_control_t *control,
  48                  location_t *loc, const char *msg);
  49 int gram_parse (void *control);
  50
  51 /* The sort of braced code we are in.  */
  52 typedef enum braced_code_e
  53   {
  54     action_braced_code,
  55     destructor_braced_code,
  56     printer_braced_code
  57   } braced_code_t;
  58 /* FIXME: This is really a dirty hack which demonstrates that we
  59    should probably not try to parse the actions now.  */
  60 extern braced_code_t current_braced_code;
  61
  62
  63 /* From reader.c. */
  64 void grammar_start_symbol_set PARAMS ((symbol_t *s, location_t l));
  65 void prologue_augment PARAMS ((const char *prologue, location_t location));
  66 void epilogue_set PARAMS ((const char *epilogue, location_t location));
  67 void grammar_symbol_append PARAMS ((symbol_t *s, location_t l));
  68 void grammar_rule_begin PARAMS ((symbol_t *lhs, location_t l));
  69 void grammar_rule_end PARAMS ((location_t l));
  70 void grammar_midrule_action PARAMS ((void));
  71 void grammar_current_rule_prec_set PARAMS ((symbol_t *precsym,
  72                                             location_t l));
  73 void grammar_current_rule_symbol_append PARAMS ((symbol_t *symbol,
  74                                                  location_t l));
  75 void grammar_current_rule_action_append PARAMS ((const char *action,
  76                                                  location_t l));
  77 extern symbol_list_t *current_rule;
  78 void reader PARAMS ((void));
  79 extern int typed;
  80
  81 #endif /* !READER_H_ */