1 /* Input parser for Bison 2 3 Copyright (C) 2000, 2001, 2002, 2003, 2005, 2006 Free Software 4 Foundation, Inc. 5 6 This file is part of Bison, the GNU Compiler Compiler. 7 8 Bison is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 Bison is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with Bison; see the file COPYING. If not, write to 20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 #ifndef READER_H_ 24 # define READER_H_ 25 26 # include "location.h" 27 # include "symlist.h" 28 29 # include "parse-gram.h" 30 31 typedef struct merger_list 32 { 33 struct merger_list* next; 34 uniqstr name; 35 uniqstr type; 36 } merger_list; 37 38 /* From the scanner. */ 39 extern FILE *gram_in; 40 extern int gram__flex_debug; 41 extern boundary scanner_cursor; 42 extern char *last_string; 43 extern location last_braced_code_loc; 44 extern int max_left_semantic_context; 45 void scanner_initialize (void); 46 void scanner_free (void); 47 void scanner_last_string_free (void); 48 49 /* These are declared by the scanner, but not used. We put them here 50 to pacify "make syntax-check". */ 51 extern FILE *gram_out; 52 extern int gram_lineno; 53 54 # define YY_DECL int gram_lex (YYSTYPE *val, location *loc) 55 YY_DECL; 56 57 58 /* From the parser. */ 59 extern int gram_debug; 60 int gram_parse (void); 61 char const *token_name (int type); 62 63 64 /* From reader.c. */ 65 void grammar_start_symbol_set (symbol *sym, location loc); 66 void prologue_augment (const char *prologue, location loc); 67 void grammar_current_rule_begin (symbol *lhs, location loc); 68 void grammar_current_rule_end (location loc); 69 void grammar_midrule_action (void); 70 void grammar_current_rule_prec_set (symbol *precsym, location loc); 71 void grammar_current_rule_dprec_set (int dprec, location loc); 72 void grammar_current_rule_merge_set (uniqstr name, location loc); 73 void grammar_current_rule_symbol_append (symbol *sym, location loc); 74 void grammar_current_rule_action_append (const char *action, location loc); 75 extern symbol_list *current_rule; 76 void reader (void); 77 void free_merger_functions (void); 78 79 extern merger_list *merge_functions; 80 81 /* Was %union seen? */ 82 extern bool typed; 83 84 /* Should rules have a default precedence? */ 85 extern bool default_prec; 86 87 #endif /* !READER_H_ */ 88
