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 /* flags set by % directives */
  26
  27 /* for -S */
  28 extern char const *skeleton;
  29
  30 /* for -I */
  31 extern char const *include;
  32
  33 extern bool debug_flag;                 /* for -t */
  34 extern bool defines_flag;               /* for -d */
  35 extern bool graph_flag;                 /* for -g */
  36 extern bool locations_flag;
  37 extern bool no_lines_flag;              /* for -l */
  38 extern bool no_parser_flag;             /* for -n */
  39 extern bool token_table_flag;           /* for -k */
  40 extern bool yacc_flag;                  /* for -y */
  41
  42 extern bool error_verbose;
  43
  44
  45 /* GLR_PARSER is true if the input file says to use the GLR
  46    (Generalized LR) parser, and to output some additional information
  47    used by the GLR algorithm.  */
  48
  49 extern bool glr_parser;
  50
  51 /* PURE_PARSER is true if should generate a parser that is all pure
  52    and reentrant.  */
  53
  54 extern bool pure_parser;
  55
  56 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
  57    is used by the GLR parser, and might be used in BackTracking
  58    parsers too.  */
  59
  60 extern bool nondeterministic_parser;
  61
  62
  63 /*-----------.
  64 | --report.  |
  65 `-----------*/
  66
  67 enum report
  68   {
  69     report_none             = 0,
  70     report_states           = 1 << 0,
  71     report_itemsets         = 1 << 1,
  72     report_lookahead_tokens = 1 << 2,
  73     report_solved_conflicts = 1 << 3,
  74     report_all              = ~0
  75   };
  76 /** What appears in the *.output file.  */
  77 extern int report_flag;
  78
  79 /*----------.
  80 | --trace.  |
  81 `----------*/
  82 enum trace
  83   {
  84     trace_none      = 0,       /**< No traces. */
  85     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
  86     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
  87     trace_resource  = 1 << 2,  /**< Memory allocation. */
  88     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
  89     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
  90     trace_tools     = 1 << 5,  /**< m4 invocation. */
  91     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
  92     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
  93     trace_time      = 1 << 8,  /**< Time consumption. */
  94     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
  95     trace_m4        = 1 << 10, /**< M4 traces. */
  96     trace_all       = ~0       /**< All of the above.  */
  97   };
  98 /** What debug items bison displays during its run.  */
  99 extern int trace_flag;
 100
 101 /*-------------.
 102 | --warnings.  |
 103 `-------------*/
 104
 105 enum warnings
 106   {
 107     warnings_none             = 0,      /**< Issue no warnings.  */
 108     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
 109     warnings_yacc             = 1 << 1, /**< POSIXME.  */
 110     warnings_all              = ~0      /**< All of the above.  */
 111   };
 112 /** What warnings are issued.  */
 113 extern int warnings_flag;
 114
 115
 116 /** Process the command line arguments.
 117  *
 118  *  \param argc   size of \a argv
 119  *  \param argv   list of arguments.
 120  */
 121 void getargs (int argc, char *argv[]);
 122
 123 #endif /* !GETARGS_H_ */