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 merger_list
  28 {
  29   struct merger_list* next;
  30   const char* name;
  31   const char* type;
  32 }
  33 merger_list;
  34
  35 typedef struct gram_control_s
  36 {
  37   int errcode;
  38 } gram_control_t;
  39
  40 /* From the scanner.  */
  41 extern FILE *gram_in;
  42 extern int gram__flex_debug;
  43 void scanner_last_string_free (void);
  44 void scanner_initialize (void);
  45 void scanner_free (void);
  46
  47 # define YY_DECL \
  48   int gram_lex (yystype *yylval, location_t *yylloc, \
  49                 gram_control_t *yycontrol)
  50 YY_DECL;
  51
  52
  53 /* From the parser.  */
  54 extern int gram_debug;
  55 void gram_error (location_t *loc, const char *msg);
  56 int gram_parse (void *control);
  57
  58 /* The sort of braced code we are in.  */
  59 typedef enum braced_code_e
  60   {
  61     action_braced_code,
  62     destructor_braced_code,
  63     printer_braced_code
  64   } braced_code_t;
  65 /* FIXME: This is really a dirty hack which demonstrates that we
  66    should probably not try to parse the actions now.  */
  67 extern braced_code_t current_braced_code;
  68
  69
  70 /* From reader.c. */
  71 void grammar_start_symbol_set (symbol_t *s, location_t l);
  72 void prologue_augment (const char *prologue, location_t location);
  73 void epilogue_set (const char *epilogue, location_t location);
  74 void grammar_symbol_append (symbol_t *s, location_t l);
  75 void grammar_rule_begin (symbol_t *lhs, location_t l);
  76 void grammar_rule_end (location_t l);
  77 void grammar_midrule_action (void);
  78 void grammar_current_rule_prec_set (symbol_t *precsym, location_t l);
  79 void grammar_current_rule_dprec_set (int dprec, location_t l);
  80 void grammar_current_rule_merge_set (const char* name, location_t l);
  81
  82 void grammar_current_rule_symbol_append (symbol_t *symbol, location_t l);
  83 void grammar_current_rule_action_append (const char *action, location_t l);
  84 extern symbol_list_t *current_rule;
  85 void reader (void);
  86 void free_merger_functions (void);
  87
  88 extern merger_list *merge_functions;
  89
  90 extern int typed;
  91
  92 #endif /* !READER_H_ */