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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 */
28extern char const *skeleton;
29
30/* for -I */
31extern char const *include;
32
33extern bool debug_flag; /* for -t */
34extern bool defines_flag; /* for -d */
35extern bool graph_flag; /* for -g */
36extern bool locations_flag;
37extern bool no_lines_flag; /* for -l */
38extern bool no_parser_flag; /* for -n */
39extern bool token_table_flag; /* for -k */
40extern bool yacc_flag; /* for -y */
41
42extern 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
49extern bool glr_parser;
50
51/* PURE_PARSER is true if should generate a parser that is all pure
52 and reentrant. */
53
54extern 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
59extern 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
65extern bool nondeterministic_parser;
66
67
68/*-----------.
69| --report. |
70`-----------*/
71
72enum 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. */
82extern int report_flag;
83
84/*----------.
85| --trace. |
86`----------*/
87enum 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. */
104extern int trace_flag;
105
106/*-------------.
107| --warnings. |
108`-------------*/
109
110enum warnings
111 {
112 warnings_none = 0, /**< Issue no warnings. */
113 warnings_error = 1 << 0, /**< Warnings are treated as errors. */
114 warnings_midrule_values = 1 << 1, /**< Unset or unused midrule values. */
115 warnings_yacc = 1 << 2, /**< POSIXME. */
116 warnings_all = ~warnings_error /**< All above warnings. */
117 };
118/** What warnings are issued. */
119extern int warnings_flag;
120
121
122/** Process the command line arguments.
123 *
124 * \param argc size of \a argv
125 * \param argv list of arguments.
126 */
127void getargs (int argc, char *argv[]);
128
129#endif /* !GETARGS_H_ */