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1 /* Parse command line arguments for bison.
2 
3    Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 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 debug;			/* for -t */
38 extern bool defines_flag;		/* for -d */
39 extern bool graph_flag;			/* for -g */
40 extern bool xml_flag;			/* for -x */
41 extern bool locations_flag;
42 extern bool no_lines_flag;		/* for -l */
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 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted.  This
56    is used by the GLR parser, and might be used in BackTracking
57    parsers too.  */
58 
59 extern bool nondeterministic_parser;
60 
61 
62 /* --language.  */
63 struct bison_language
64 {
65   char language[sizeof "Java"];
66   char skeleton[sizeof "java-skel.m4"];
67   char src_extension[sizeof ".java"];
68   char header_extension[sizeof ".java"];
69   bool add_tab;
70 };
71 
72 extern int language_prio;
73 extern struct bison_language const *language;
74 
75 /*-----------.
76 | --report.  |
77 `-----------*/
78 
79 enum report
80   {
81     report_none             = 0,
82     report_states           = 1 << 0,
83     report_itemsets         = 1 << 1,
84     report_lookahead_tokens = 1 << 2,
85     report_solved_conflicts = 1 << 3,
86     report_all              = ~0
87   };
88 /** What appears in the *.output file.  */
89 extern int report_flag;
90 
91 /*----------.
92 | --trace.  |
93 `----------*/
94 enum trace
95   {
96     trace_none      = 0,       /**< No traces. */
97     trace_scan      = 1 << 0,  /**< Grammar scanner traces. */
98     trace_parse     = 1 << 1,  /**< Grammar parser traces. */
99     trace_resource  = 1 << 2,  /**< Memory allocation. */
100     trace_sets      = 1 << 3,  /**< Grammar sets: firsts, nullable etc. */
101     trace_bitsets   = 1 << 4,  /**< Use of bitsets. */
102     trace_tools     = 1 << 5,  /**< m4 invocation. */
103     trace_automaton = 1 << 6,  /**< Construction of the automaton. */
104     trace_grammar   = 1 << 7,  /**< Reading, reducing the grammar. */
105     trace_time      = 1 << 8,  /**< Time consumption. */
106     trace_skeleton  = 1 << 9,  /**< Skeleton postprocessing. */
107     trace_m4        = 1 << 10, /**< M4 traces. */
108     trace_muscles   = 1 << 11, /**< M4 definitions of the muscles. */
109     trace_ielr      = 1 << 12, /**< IELR conversion. */
110     trace_all       = ~0       /**< All of the above.  */
111   };
112 /** What debug items bison displays during its run.  */
113 extern int trace_flag;
114 
115 /*-------------.
116 | --warnings.  |
117 `-------------*/
118 
119 enum warnings
120   {
121     warnings_none             = 0,      /**< Issue no warnings.  */
122     warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
123     warnings_midrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
124     warnings_yacc             = 1 << 2, /**< POSIXME.  */
125     warnings_conflicts_sr     = 1 << 3, /**< S/R conflicts.  */
126     warnings_conflicts_rr     = 1 << 4, /**< R/R conflicts.  */
127     warnings_other            = 1 << 5, /**< All other warnings.  */
128     warnings_all              = ~warnings_error /**< All above warnings.  */
129   };
130 /** What warnings are issued.  */
131 extern int warnings_flag;
132 
133 /*-------------.
134 | --features.  |
135 `-------------*/
136 
137 enum feature
138   {
139     feature_none  = 0,         /**< No additional feature.  */
140     feature_caret = 1 << 0,    /**< Enhance the output of errors with carets.  */
141     feature_all   = ~0         /**< All above features.  */
142   };
143 /** What additional features to use.  */
144 extern int feature_flag;
145 
146 /** Process the command line arguments.
147  *
148  *  \param argc   size of \a argv
149  *  \param argv   list of arguments.
150  */
151 void getargs (int argc, char *argv[]);
152 
153 /* Used by parse-gram.y.  */
154 void language_argmatch (char const *arg, int prio, location loc);
155 void skeleton_arg (const char *arg, int prio, location loc);
156 
157 /** In the string \c s, replace all characters \c from by \c to.  */
158 void tr (char *s, char from, char to);
159 
160 #endif /* !GETARGS_H_ */
161