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 /* PUSH_PARSER is true if should generate a parser that is capable of being
  57    called asynchronously.  Is must be pure and reentrant.  */
  58
  59 extern bool push_parser;
  60
  61 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
  62    is used by the GLR parser, and might be used in BackTracking
  63    parsers too.  */
  64
  65 extern bool nondeterministic_parser;
  66
  67
  68 /*-----------.
  69 | --report.  |
  70 `-----------*/
  71
  72 enum report
  73   {
  74     report_none             = 0,
  75     report_states           = 1 << 0,
  76     report_itemsets         = 1 << 1,
  77     report_lookahead_tokens = 1 << 2,
  78     report_solved_conflicts = 1 << 3,
  79     report_all              = ~0
  80   };
  81 /** What appears in the *.output file.  */
  82 extern int report_flag;
  83
  84 /*----------.
  85 | --trace.  |
  86 `----------*/
  87 enum trace
  88   {
  89     trace_none      = 0,       /**< No traces. */
  90     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
  91     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
  92     trace_resource  = 1 << 2,  /**< Memory allocation. */
  93     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
  94     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
  95     trace_tools     = 1 << 5,  /**< m4 invocation. */
  96     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
  97     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
  98     trace_time      = 1 << 8,  /**< Time consumption. */
  99     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
 100     trace_m4        = 1 << 10, /**< M4 traces. */
 101     trace_all       = ~0       /**< All of the above.  */
 102   };
 103 /** What debug items bison displays during its run.  */
 104 extern int trace_flag;
 105
 106 /*-------------.
 107 | --warnings.  |
 108 `-------------*/
 109
 110 enum warnings
 111   {
 112     warnings_none             = 0,      /**< Issue no warnings.  */
 113     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
 114     warnings_yacc             = 1 << 1, /**< POSIXME.  */
 115     warnings_all              = ~0      /**< All of the above.  */
 116   };
 117 /** What warnings are issued.  */
 118 extern int warnings_flag;
 119
 120
 121 /** Process the command line arguments.
 122  *
 123  *  \param argc   size of \a argv
 124  *  \param argv   list of arguments.
 125  */
 126 void getargs (int argc, char *argv[]);
 127
 128 #endif /* !GETARGS_H_ */