src/getargs.h

   1 /* Parse command line arguments for bison.
   2
   3    Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018 Free Software
   4    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 enum { command_line_prio, grammar_prio, default_prio };
  27
  28 /* flags set by % directives */
  29
  30 /* for -S */
  31 extern char const *skeleton;
  32 extern int skeleton_prio;
  33
  34 /* for -I */
  35 extern char const *include;
  36
  37 extern bool defines_flag;               /* for -d */
  38 extern bool graph_flag;                 /* for -g */
  39 extern bool xml_flag;                   /* for -x */
  40 extern bool no_lines_flag;              /* for -l */
  41 extern bool token_table_flag;           /* for -k */
  42 extern bool yacc_flag;                  /* for -y */
  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 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
  52    is used by the GLR parser, and might be used in BackTracking
  53    parsers too.  */
  54
  55 extern bool nondeterministic_parser;
  56
  57
  58 /* --language.  */
  59 struct bison_language
  60 {
  61   char language[sizeof "Java"];
  62   char skeleton[sizeof "java-skel.m4"];
  63   char src_extension[sizeof ".java"];
  64   char header_extension[sizeof ".java"];
  65   bool add_tab;
  66 };
  67
  68 extern int language_prio;
  69 extern struct bison_language const *language;
  70
  71 /*-----------.
  72 | --report.  |
  73 `-----------*/
  74
  75 enum report
  76   {
  77     report_none             = 0,
  78     report_states           = 1 << 0,
  79     report_itemsets         = 1 << 1,
  80     report_lookahead_tokens = 1 << 2,
  81     report_solved_conflicts = 1 << 3,
  82     report_all              = ~0
  83   };
  84 /** What appears in the *.output file.  */
  85 extern int report_flag;
  86
  87 /*----------.
  88 | --trace.  |
  89 `----------*/
  90 enum trace
  91   {
  92     trace_none      = 0,       /**< No traces. */
  93     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
  94     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
  95     trace_resource  = 1 << 2,  /**< Memory allocation. */
  96     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
  97     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
  98     trace_tools     = 1 << 5,  /**< m4 invocation. */
  99     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
 100     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
 101     trace_time      = 1 << 8,  /**< Time consumption. */
 102     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
 103     trace_m4        = 1 << 10, /**< M4 traces. */
 104     trace_muscles   = 1 << 11, /**< M4 definitions of the muscles. */
 105     trace_ielr      = 1 << 12, /**< IELR conversion. */
 106     trace_all       = ~0       /**< All of the above.  */
 107   };
 108 /** What debug items bison displays during its run.  */
 109 extern int trace_flag;
 110
 111 /*-------------.
 112 | --features.  |
 113 `-------------*/
 114
 115 enum feature
 116   {
 117     feature_none  = 0,         /**< No additional feature.  */
 118     feature_caret = 1 << 0,    /**< Enhance the output of errors with carets.  */
 119     feature_all   = ~0         /**< All above features.  */
 120   };
 121 /** What additional features to use.  */
 122 extern int feature_flag;
 123
 124
 125 /** Process the command line arguments.
 126  *
 127  *  \param argc   size of \a argv
 128  *  \param argv   list of arguments.
 129  */
 130 void getargs (int argc, char *argv[]);
 131
 132 /* Used by parse-gram.y.  */
 133 void language_argmatch (char const *arg, int prio, location loc);
 134 void skeleton_arg (const char *arg, int prio, location loc);
 135
 136 /** In the string \c s, replace all characters \c from by \c to.  */
 137 void tr (char *s, char from, char to);
 138
 139 #endif /* !GETARGS_H_ */