+ else
+ trace_flag = trace_all;
+}
+
+
+/*----------------------.
+| --report's handling. |
+`----------------------*/
+
+static const char * const report_args[] =
+{
+ /* In a series of synonyms, present the most meaningful first, so
+ that argmatch_valid be more readable. */
+ "none",
+ "state", "states",
+ "itemset", "itemsets",
+ "lookahead", "lookaheads",
+ "solved",
+ "all",
+ 0
+};
+
+static const int report_types[] =
+{
+ report_none,
+ report_states, report_states,
+ report_states | report_itemsets, report_states | report_itemsets,
+ report_states | report_lookaheads, report_states | report_lookaheads,
+ report_states | report_solved_conflicts,
+ report_all
+};
+
+
+static void
+report_argmatch (char *args)
+{
+ verify (report_constraint, ARGMATCH_CONSTRAINT (report_args, report_types));
+ args = strtok (args, ",");
+ do
+ {
+ int report = XARGMATCH ("--report", args,
+ report_args, report_types);
+ if (report == report_none)
+ report_flag = report_none;
+ else
+ report_flag |= report;
+ }
+ while ((args = strtok (NULL, ",")));
+}
+
+
+/*-------------------------------------------.
+| Display the help message and exit STATUS. |
+`-------------------------------------------*/
+
+static void usage (int) ATTRIBUTE_NORETURN;
+
+static void
+usage (int status)
+{
+ if (status != 0)
+ fprintf (stderr, _("Try `%s --help' for more information.\n"),
+ program_name);
+ else
+ {
+ /* Some efforts were made to ease the translators' task, please
+ continue. */
+ fputs (_("\
+GNU bison generates parsers for LALR(1) grammars.\n"), stdout);
+ putc ('\n', stdout);
+
+ fprintf (stdout, _("\
+Usage: %s [OPTION]... FILE\n"), program_name);
+ putc ('\n', stdout);
+
+ fputs (_("\
+If a long option shows an argument as mandatory, then it is mandatory\n\
+for the equivalent short option also. Similarly for optional arguments.\n"),
+ stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+Operation modes:\n\
+ -h, --help display this help and exit\n\
+ -V, --version output version information and exit\n\
+ -y, --yacc emulate POSIX yacc\n"), stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+Parser:\n\
+ -S, --skeleton=FILE specify the skeleton to use\n\
+ -t, --debug instrument the parser for debugging\n\
+ --locations enable locations computation\n\
+ -p, --name-prefix=PREFIX prepend PREFIX to the external symbols\n\
+ -l, --no-lines don't generate `#line' directives\n\
+ -n, --no-parser generate the tables only\n\
+ -k, --token-table include a table of token names\n\
+"), stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+Output:\n\
+ -d, --defines also produce a header file\n\
+ -r, --report=THINGS also produce details on the automaton\n\
+ -v, --verbose same as `--report=state'\n\
+ -b, --file-prefix=PREFIX specify a PREFIX for output files\n\
+ -o, --output=FILE leave output to FILE\n\
+ -g, --graph also produce a VCG description of the automaton\n\
+"), stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+THINGS is a list of comma separated words that can include:\n\
+ `state' describe the states\n\
+ `itemset' complete the core item sets with their closure\n\
+ `lookahead' explicitly associate lookaheads to items\n\
+ `solved' describe shift/reduce conflicts solving\n\
+ `all' include all the above information\n\
+ `none' disable the report\n\
+"), stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+Report bugs to <bug-bison@gnu.org>.\n"), stdout);
+ }
+
+ exit (status);
+}
+
+
+/*------------------------------.
+| Display the version message. |
+`------------------------------*/
+
+static void
+version (void)
+{
+ /* Some efforts were made to ease the translators' task, please
+ continue. */
+ printf (_("bison (GNU Bison) %s"), VERSION);
+ putc ('\n', stdout);
+ fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout);
+ putc ('\n', stdout);
+
+ fprintf (stdout,
+ _("Copyright (C) %d Free Software Foundation, Inc.\n"), 2003);
+
+ fputs (_("\
+This is free software; see the source for copying conditions. There is NO\n\
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
+"),
+ stdout);
+}
+
+
+/*----------------------.
+| Process the options. |
+`----------------------*/
+
+/* Shorts options. */
+const char *short_options = "yvegdhr:ltknVo:b:p:S:T::";
+
+static struct option const long_options[] =
+{
+ /* Operation modes. */
+ { "help", no_argument, 0, 'h' },
+ { "version", no_argument, 0, 'V' },
+
+ /* Parser. */
+ { "name-prefix", required_argument, 0, 'p' },
+ { "include", required_argument, 0, 'I' },
+
+ /* Output. */
+ { "file-prefix", required_argument, 0, 'b' },
+ { "output", required_argument, 0, 'o' },
+ { "output-file", required_argument, 0, 'o' },
+ { "graph", optional_argument, 0, 'g' },
+ { "report", required_argument, 0, 'r' },
+ { "verbose", no_argument, 0, 'v' },
+
+ /* Hidden. */
+ { "trace", optional_argument, 0, 'T' },
+
+ /* Output. */
+ { "defines", optional_argument, 0, 'd' },
+
+ /* Operation modes. */
+ { "fixed-output-files", no_argument, 0, 'y' },
+ { "yacc", no_argument, 0, 'y' },
+
+ /* Parser. */
+ { "debug", no_argument, 0, 't' },
+ { "locations", no_argument, &locations_flag, 1 },
+ { "no-lines", no_argument, 0, 'l' },
+ { "no-parser", no_argument, 0, 'n' },
+ { "raw", no_argument, 0, 0 },
+ { "skeleton", required_argument, 0, 'S' },
+ { "token-table", no_argument, 0, 'k' },
+
+ {0, 0, 0, 0}
+};
+
+/* Under DOS, there is no difference on the case. This can be
+ troublesome when looking for `.tab' etc. */
+#ifdef MSDOS
+# define AS_FILE_NAME(File) (strlwr (File), (File))
+#else
+# define AS_FILE_NAME(File) (File)
+#endif
+
+void
+getargs (int argc, char *argv[])
+{
+ int c;
+
+ while ((c = getopt_long (argc, argv, short_options, long_options, NULL))
+ != -1)
+ switch (c)
+ {
+ case 0:
+ /* Certain long options cause getopt_long to return 0. */
+ break;
+
+ case 'y':
+ yacc_flag = 1;
+ break;
+
+ case 'h':
+ usage (EXIT_SUCCESS);
+
+ case 'V':
+ version ();
+ exit (EXIT_SUCCESS);
+
+ case 'g':
+ /* Here, the -g and --graph=FILE options are differentiated. */
+ graph_flag = 1;
+ if (optarg)
+ spec_graph_file = AS_FILE_NAME (optarg);
+ break;
+
+ case 'v':
+ report_flag |= report_states;
+ break;
+
+ case 'S':
+ skeleton = AS_FILE_NAME (optarg);
+ break;
+
+ case 'I':
+ include = AS_FILE_NAME (optarg);
+ break;
+
+ case 'd':
+ /* Here, the -d and --defines options are differentiated. */
+ defines_flag = 1;
+ if (optarg)
+ spec_defines_file = AS_FILE_NAME (optarg);
+ break;
+
+ case 'l':
+ no_lines_flag = 1;
+ break;
+
+ case 'k':
+ token_table_flag = 1;
+ break;
+
+ case 'n':
+ no_parser_flag = 1;
+ break;
+
+ case 't':
+ debug_flag = 1;
+ break;
+
+ case 'o':
+ spec_outfile = AS_FILE_NAME (optarg);
+ break;
+
+ case 'b':
+ spec_file_prefix = AS_FILE_NAME (optarg);
+ break;
+
+ case 'p':
+ spec_name_prefix = optarg;
+ break;
+
+ case 'r':
+ report_argmatch (optarg);
+ break;
+
+ case 'T':
+ trace_argmatch (optarg);
+ break;
+
+ default:
+ usage (EXIT_FAILURE);
+ }
projects / bison.git / blobdiff