src/getargs.h

   1 /* Parse command line arguments for bison.
   2
   3    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
   4    2005, 2006, 2007 Free Software 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 it
   9    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, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    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 the Free
  20    Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 #ifndef GETARGS_H_
  24 # define GETARGS_H_
  25
  26 #include "location.h"
  27
  28 extern char *program_name;
  29
  30 /* flags set by % directives */
  31
  32 /* for -S */
  33 extern char const *skeleton;
  34
  35 /* for -I */
  36 extern char const *include;
  37
  38 extern bool debug_flag;                 /* for -t */
  39 extern bool defines_flag;               /* for -d */
  40 extern bool graph_flag;                 /* for -g */
  41 extern bool locations_flag;
  42 extern bool no_lines_flag;              /* for -l */
  43 extern bool no_parser_flag;             /* for -n */
  44 extern bool token_table_flag;           /* for -k */
  45 extern bool yacc_flag;                  /* for -y */
  46
  47 extern bool error_verbose;
  48
  49
  50 /* GLR_PARSER is true if the input file says to use the GLR
  51    (Generalized LR) parser, and to output some additional information
  52    used by the GLR algorithm.  */
  53
  54 extern bool glr_parser;
  55
  56 /* PULL_PARSER is true if should generate a pull parser.  */
  57
  58 extern bool pull_parser;
  59
  60 /* PURE_PARSER is true if should generate a parser that is all pure
  61    and reentrant.  */
  62
  63 extern bool pure_parser;
  64
  65 /* PUSH_PARSER is true if should generate a push parser.  */
  66
  67 extern bool push_parser;
  68
  69 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
  70    is used by the GLR parser, and might be used in BackTracking
  71    parsers too.  */
  72
  73 extern bool nondeterministic_parser;
  74
  75
  76 /* --language.  */
  77 struct bison_language
  78 {
  79   char language[sizeof "Java"];
  80   char skeleton[sizeof "java-skel.m4"];
  81   char src_extension[sizeof ".java"];
  82   char header_extension[sizeof ".java"];
  83   bool add_tab;
  84 };
  85
  86 extern struct bison_language const *language;
  87
  88 /*-----------.
  89 | --report.  |
  90 `-----------*/
  91
  92 enum report
  93   {
  94     report_none             = 0,
  95     report_states           = 1 << 0,
  96     report_itemsets         = 1 << 1,
  97     report_lookahead_tokens = 1 << 2,
  98     report_solved_conflicts = 1 << 3,
  99     report_all              = ~0
 100   };
 101 /** What appears in the *.output file.  */
 102 extern int report_flag;
 103
 104 /*----------.
 105 | --trace.  |
 106 `----------*/
 107 enum trace
 108   {
 109     trace_none      = 0,       /**< No traces. */
 110     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
 111     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
 112     trace_resource  = 1 << 2,  /**< Memory allocation. */
 113     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
 114     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
 115     trace_tools     = 1 << 5,  /**< m4 invocation. */
 116     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
 117     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
 118     trace_time      = 1 << 8,  /**< Time consumption. */
 119     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
 120     trace_m4        = 1 << 10, /**< M4 traces. */
 121     trace_all       = ~0       /**< All of the above.  */
 122   };
 123 /** What debug items bison displays during its run.  */
 124 extern int trace_flag;
 125
 126 /*-------------.
 127 | --warnings.  |
 128 `-------------*/
 129
 130 enum warnings
 131   {
 132     warnings_none             = 0,      /**< Issue no warnings.  */
 133     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
 134     warnings_midrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
 135     warnings_yacc             = 1 << 2, /**< POSIXME.  */
 136     warnings_all              = ~warnings_error /**< All above warnings.  */
 137   };
 138 /** What warnings are issued.  */
 139 extern int warnings_flag;
 140
 141
 142 /** Process the command line arguments.
 143  *
 144  *  \param argc   size of \a argv
 145  *  \param argv   list of arguments.
 146  */
 147 void getargs (int argc, char *argv[]);
 148
 149 /* Used by parse-gram.y.  */
 150 void language_argmatch (char const *arg, int prio, location const *loc);
 151 void skeleton_arg (const char *arg, int prio, location const *loc);
 152
 153 #endif /* !GETARGS_H_ */