src/getargs.h

   1 /* Parse command line arguments for bison.
   2    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   3    Free Software Foundation, Inc.
   4
   5    This file is part of Bison, the GNU Compiler Compiler.
   6
   7    Bison is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    Bison is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Bison; see the file COPYING.  If not, write to the Free
  19    Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21
  22 #ifndef GETARGS_H_
  23 # define GETARGS_H_
  24
  25 #include "location.h"
  26
  27 extern char *program_name;
  28
  29 /* flags set by % directives */
  30
  31 /* for -S */
  32 extern char const *skeleton;
  33
  34 /* for -I */
  35 extern char const *include;
  36
  37 extern bool debug_flag;                 /* for -t */
  38 extern bool defines_flag;               /* for -d */
  39 extern bool graph_flag;                 /* for -g */
  40 extern bool locations_flag;
  41 extern bool no_lines_flag;              /* for -l */
  42 extern bool no_parser_flag;             /* for -n */
  43 extern bool token_table_flag;           /* for -k */
  44 extern bool yacc_flag;                  /* for -y */
  45
  46 extern bool error_verbose;
  47
  48
  49 /* GLR_PARSER is true if the input file says to use the GLR
  50    (Generalized LR) parser, and to output some additional information
  51    used by the GLR algorithm.  */
  52
  53 extern bool glr_parser;
  54
  55 /* PURE_PARSER is true if should generate a parser that is all pure
  56    and reentrant.  */
  57
  58 extern bool pure_parser;
  59
  60 /* PUSH_PARSER is true if should generate a parser that is capable of being
  61    called asynchronously.  Is must be pure and reentrant.  */
  62
  63 extern bool push_parser;
  64
  65 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
  66    is used by the GLR parser, and might be used in BackTracking
  67    parsers too.  */
  68
  69 extern bool nondeterministic_parser;
  70
  71
  72 /* --language.  */
  73 struct bison_language
  74 {
  75   char language[sizeof "c++"];
  76   char skeleton[sizeof "c++-skel.m4"];
  77   char src_extension[sizeof ".cc"];
  78   char header_extension[sizeof ".hh"];
  79   bool add_tab;
  80 };
  81
  82 extern struct bison_language const *language;
  83
  84 /*-----------.
  85 | --report.  |
  86 `-----------*/
  87
  88 enum report
  89   {
  90     report_none             = 0,
  91     report_states           = 1 << 0,
  92     report_itemsets         = 1 << 1,
  93     report_lookahead_tokens = 1 << 2,
  94     report_solved_conflicts = 1 << 3,
  95     report_all              = ~0
  96   };
  97 /** What appears in the *.output file.  */
  98 extern int report_flag;
  99
 100 /*----------.
 101 | --trace.  |
 102 `----------*/
 103 enum trace
 104   {
 105     trace_none      = 0,       /**< No traces. */
 106     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
 107     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
 108     trace_resource  = 1 << 2,  /**< Memory allocation. */
 109     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
 110     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
 111     trace_tools     = 1 << 5,  /**< m4 invocation. */
 112     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
 113     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
 114     trace_time      = 1 << 8,  /**< Time consumption. */
 115     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
 116     trace_m4        = 1 << 10, /**< M4 traces. */
 117     trace_all       = ~0       /**< All of the above.  */
 118   };
 119 /** What debug items bison displays during its run.  */
 120 extern int trace_flag;
 121
 122 /*-------------.
 123 | --warnings.  |
 124 `-------------*/
 125
 126 enum warnings
 127   {
 128     warnings_none             = 0,      /**< Issue no warnings.  */
 129     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
 130     warnings_midrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
 131     warnings_yacc             = 1 << 2, /**< POSIXME.  */
 132     warnings_all              = ~warnings_error /**< All above warnings.  */
 133   };
 134 /** What warnings are issued.  */
 135 extern int warnings_flag;
 136
 137
 138 /** Process the command line arguments.
 139  *
 140  *  \param argc   size of \a argv
 141  *  \param argv   list of arguments.
 142  */
 143 void getargs (int argc, char *argv[]);
 144
 145 /* Used by parse-gram.y.  */
 146 void language_argmatch (char const *arg, int prio, location const *loc);
 147 void skeleton_arg (const char *arg, int prio, location const *loc);
 148
 149 #endif /* !GETARGS_H_ */