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
  26 typedef struct symbol_list
  27 {
  28   struct symbol_list *next;
  29   symbol_t *sym;
  30   location_t location;
  31
  32   /* The action is attached to the LHS of a rule. */
  33   const char *action;
  34   location_t action_location;
  35
  36   symbol_t *ruleprec;
  37 } symbol_list;
  38
  39 symbol_list *symbol_list_new PARAMS ((symbol_t *sym, location_t location));
  40 symbol_list *symbol_list_prepend PARAMS ((symbol_list *list,
  41                                           symbol_t *sym, location_t location));
  42
  43 # include "parse-gram.h"
  44
  45 typedef struct gram_control_s
  46 {
  47   int errcode;
  48 } gram_control_t;
  49
  50 /* From the scanner.  */
  51 extern FILE *gram_in;
  52 extern int gram__flex_debug;
  53 void scanner_last_string_free PARAMS ((void));
  54 void scanner_initialize PARAMS ((void));
  55 void scanner_free PARAMS ((void));
  56
  57 # define YY_DECL \
  58   int gram_lex (yystype *yylval, location_t *yylloc, \
  59                 gram_control_t *yycontrol)
  60 YY_DECL;
  61
  62
  63 /* From the parser.  */
  64 extern int gram_debug;
  65 void gram_error (gram_control_t *control,
  66                  location_t *loc, const char *msg);
  67 int gram_parse (void *control);
  68
  69 char *get_type_name PARAMS ((int n, symbol_list *rule));
  70 extern int typed;
  71
  72 /* From reader.c. */
  73 void grammar_start_symbol_set PARAMS ((symbol_t *s, location_t l));
  74 void prologue_augment PARAMS ((const char *prologue, location_t location));
  75 void epilogue_set PARAMS ((const char *epilogue, location_t location));
  76 void grammar_symbol_append PARAMS ((symbol_t *s, location_t l));
  77 void grammar_rule_begin PARAMS ((symbol_t *lhs, location_t l));
  78 void grammar_rule_end PARAMS ((location_t l));
  79 void grammar_midrule_action PARAMS ((void));
  80 void grammar_current_rule_prec_set PARAMS ((symbol_t *precsym));
  81 void grammar_current_rule_symbol_append PARAMS ((symbol_t *symbol,
  82                                                  location_t l));
  83 void grammar_current_rule_action_append PARAMS ((const char *action,
  84                                                  location_t l));
  85 extern symbol_list *current_rule;
  86 void reader PARAMS ((void));
  87
  88 #endif /* !READER_H_ */