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, 2008 Free Software Foundation, Inc.
   5
   6    This file is part of Bison, the GNU Compiler Compiler.
   7
   8    This program 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 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GETARGS_H_
  22 # define GETARGS_H_
  23
  24 #include "location.h"
  25
  26 extern char *program_name;
  27 enum { command_line_prio, grammar_prio, default_prio };
  28
  29 /* flags set by % directives */
  30
  31 /* for -S */
  32 extern char const *skeleton;
  33 extern int skeleton_prio;
  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 xml_flag;                   /* for -x */
  42 extern bool locations_flag;
  43 extern bool no_lines_flag;              /* for -l */
  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 /* 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 /* --language.  */
  64 struct bison_language
  65 {
  66   char language[sizeof "Java"];
  67   char skeleton[sizeof "java-skel.m4"];
  68   char src_extension[sizeof ".java"];
  69   char header_extension[sizeof ".java"];
  70   bool add_tab;
  71 };
  72
  73 extern int language_prio;
  74 extern struct bison_language const *language;
  75
  76 /*-----------.
  77 | --report.  |
  78 `-----------*/
  79
  80 enum report
  81   {
  82     report_none             = 0,
  83     report_states           = 1 << 0,
  84     report_itemsets         = 1 << 1,
  85     report_lookahead_tokens = 1 << 2,
  86     report_solved_conflicts = 1 << 3,
  87     report_all              = ~0
  88   };
  89 /** What appears in the *.output file.  */
  90 extern int report_flag;
  91
  92 /*----------.
  93 | --trace.  |
  94 `----------*/
  95 enum trace
  96   {
  97     trace_none      = 0,       /**< No traces. */
  98     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
  99     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
 100     trace_resource  = 1 << 2,  /**< Memory allocation. */
 101     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
 102     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
 103     trace_tools     = 1 << 5,  /**< m4 invocation. */
 104     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
 105     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
 106     trace_time      = 1 << 8,  /**< Time consumption. */
 107     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
 108     trace_m4        = 1 << 10, /**< M4 traces. */
 109     trace_all       = ~0       /**< All of the above.  */
 110   };
 111 /** What debug items bison displays during its run.  */
 112 extern int trace_flag;
 113
 114 /*-------------.
 115 | --warnings.  |
 116 `-------------*/
 117
 118 enum warnings
 119   {
 120     warnings_none             = 0,      /**< Issue no warnings.  */
 121     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
 122     warnings_midrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
 123     warnings_yacc             = 1 << 2, /**< POSIXME.  */
 124     warnings_all              = ~warnings_error /**< All above warnings.  */
 125   };
 126 /** What warnings are issued.  */
 127 extern int warnings_flag;
 128
 129
 130 /** Process the command line arguments.
 131  *
 132  *  \param argc   size of \a argv
 133  *  \param argv   list of arguments.
 134  */
 135 void getargs (int argc, char *argv[]);
 136
 137 /* Used by parse-gram.y.  */
 138 void language_argmatch (char const *arg, int prio, location const *loc);
 139 void skeleton_arg (const char *arg, int prio, location const *loc);
 140
 141 #endif /* !GETARGS_H_ */