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1 /* Parse command line arguments for bison.
2
3 Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007 Free Software Foundation, Inc.
5
6 This file is part of Bison, the GNU Compiler Compiler.
7
8 Bison is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 Bison is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with Bison; see the file COPYING. If not, write to the Free
20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #ifndef GETARGS_H_
24 # define GETARGS_H_
25
26 #include "location.h"
27
28 extern char *program_name;
29
30 /* flags set by % directives */
31
32 /* for -S */
33 extern char const *skeleton;
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 locations_flag;
42 extern bool no_lines_flag; /* for -l */
43 extern bool no_parser_flag; /* for -n */
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 /* PULL_PARSER is true if should generate a pull parser. */
57
58 extern bool pull_parser;
59
60 /* PURE_PARSER is true if should generate a parser that is all pure
61 and reentrant. */
62
63 extern bool pure_parser;
64
65 /* PUSH_PARSER is true if should generate a push parser. */
66
67 extern bool push_parser;
68
69 /* NONDETERMINISTIC_PARSER is true iff conflicts are accepted. This
70 is used by the GLR parser, and might be used in BackTracking
71 parsers too. */
72
73 extern bool nondeterministic_parser;
74
75
76 /* --language. */
77 struct bison_language
78 {
79 char language[sizeof "Java"];
80 char skeleton[sizeof "java-skel.m4"];
81 char src_extension[sizeof ".java"];
82 char header_extension[sizeof ".java"];
83 bool add_tab;
84 };
85
86 extern struct bison_language const *language;
87
88 /*-----------.
89 | --report. |
90 `-----------*/
91
92 enum report
93 {
94 report_none = 0,
95 report_states = 1 << 0,
96 report_itemsets = 1 << 1,
97 report_lookahead_tokens = 1 << 2,
98 report_solved_conflicts = 1 << 3,
99 report_all = ~0
100 };
101 /** What appears in the *.output file. */
102 extern int report_flag;
103
104 /*----------.
105 | --trace. |
106 `----------*/
107 enum trace
108 {
109 trace_none = 0, /**< No traces. */
110 trace_scan = 1 << 0, /**< Grammar scanner traces. */
111 trace_parse = 1 << 1, /**< Grammar parser traces. */
112 trace_resource = 1 << 2, /**< Memory allocation. */
113 trace_sets = 1 << 3, /**< Grammar sets: firsts, nullable etc. */
114 trace_bitsets = 1 << 4, /**< Use of bitsets. */
115 trace_tools = 1 << 5, /**< m4 invocation. */
116 trace_automaton = 1 << 6, /**< Construction of the automaton. */
117 trace_grammar = 1 << 7, /**< Reading, reducing the grammar. */
118 trace_time = 1 << 8, /**< Time consumption. */
119 trace_skeleton = 1 << 9, /**< Skeleton postprocessing. */
120 trace_m4 = 1 << 10, /**< M4 traces. */
121 trace_all = ~0 /**< All of the above. */
122 };
123 /** What debug items bison displays during its run. */
124 extern int trace_flag;
125
126 /*-------------.
127 | --warnings. |
128 `-------------*/
129
130 enum warnings
131 {
132 warnings_none = 0, /**< Issue no warnings. */
133 warnings_error = 1 << 0, /**< Warnings are treated as errors. */
134 warnings_midrule_values = 1 << 1, /**< Unset or unused midrule values. */
135 warnings_yacc = 1 << 2, /**< POSIXME. */
136 warnings_all = ~warnings_error /**< All above warnings. */
137 };
138 /** What warnings are issued. */
139 extern int warnings_flag;
140
141
142 /** Process the command line arguments.
143 *
144 * \param argc size of \a argv
145 * \param argv list of arguments.
146 */
147 void getargs (int argc, char *argv[]);
148
149 /* Used by parse-gram.y. */
150 void language_argmatch (char const *arg, int prio, location const *loc);
151 void skeleton_arg (const char *arg, int prio, location const *loc);
152
153 #endif /* !GETARGS_H_ */