/* Parse command line arguments for bison.
- Copyright 1984, 1986, 1989, 1992, 2000, 2001, 2002
+ Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include "system.h"
#include "getopt.h"
#include "argmatch.h"
+#include "error.h"
#include "complain.h"
#include "getargs.h"
#include "files.h"
/* In a series of synonyms, present the most meaningful first, so
that argmatch_valid be more readable. */
"none - no report",
+ "scan - scanner traces",
+ "parse - parser traces",
"automaton - contruction of the automaton",
"bitsets - use of bitsets",
"grammar - reading, reducing of the grammar",
static const int trace_types[] =
{
trace_none,
+ trace_scan,
+ trace_parse,
trace_automaton,
trace_bitsets,
trace_grammar,
while ((args = strtok (NULL, ",")));
}
-/*---------------------------.
-| Display the help message. |
-`---------------------------*/
+
+/*-------------------------------------------.
+| Display the help message and exit STATUS. |
+`-------------------------------------------*/
+
+static void usage (int) ATTRIBUTE_NORETURN;
static void
-usage (FILE *stream)
+usage (int status)
{
- /* Some efforts were made to ease the translators' task, please
- continue. */
- fputs (_("\
-GNU bison generates parsers for LALR(1) grammars.\n"), stream);
- putc ('\n', stream);
+ 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 (stream, _("\
+ fprintf (stdout, _("\
Usage: %s [OPTION]... FILE\n"), program_name);
- putc ('\n', stream);
+ putc ('\n', stdout);
- fputs (_("\
+ 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"),
- stream);
- putc ('\n', stream);
+ stdout);
+ putc ('\n', stdout);
- fputs (_("\
+ 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"), stream);
- putc ('\n', stream);
+ -y, --yacc emulate POSIX yacc\n"), stdout);
+ putc ('\n', stdout);
- fputs (_("\
+ fputs (_("\
Parser:\n\
-S, --skeleton=FILE specify the skeleton to use\n\
-t, --debug instrument the parser for debugging\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\
-"), stream);
- putc ('\n', stream);
+"), stdout);
+ putc ('\n', stdout);
- fputs (_("\
+ fputs (_("\
Output:\n\
-d, --defines also produce a header file\n\
-r, --report=THINGS also produce details on the automaton\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\
-"), stream);
- putc ('\n', stream);
+"), stdout);
+ putc ('\n', stdout);
- fputs (_("\
+ 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\
`solved' describe shift/reduce conflicts solving\n\
`all' include all the above information\n\
`none' disable the report\n\
-"), stream);
- putc ('\n', stream);
+"), stdout);
+ putc ('\n', stdout);
- fputs (_("\
-Report bugs to <bug-bison@gnu.org>.\n"), stream);
+ fputs (_("\
+Report bugs to <bug-bison@gnu.org>.\n"), stdout);
+ }
+
+ exit (status);
}
`------------------------------*/
static void
-version (FILE *stream)
+version (void)
{
/* Some efforts were made to ease the translators' task, please
continue. */
- fprintf (stream, _("bison (GNU Bison) %s"), VERSION);
- putc ('\n', stream);
- fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stream);
- putc ('\n', stream);
+ printf (_("bison (GNU Bison) %s"), VERSION);
+ putc ('\n', stdout);
+ fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout);
+ putc ('\n', stdout);
- fprintf (stream,
+ fprintf (stdout,
_("Copyright (C) %d Free Software Foundation, Inc.\n"), 2002);
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\
"),
- stream);
+ stdout);
}
break;
case 'h':
- usage (stdout);
- exit (0);
+ usage (EXIT_SUCCESS);
case 'V':
- version (stdout);
- exit (0);
+ version ();
+ exit (EXIT_SUCCESS);
case 'g':
/* Here, the -g and --graph=FILE options are differentiated. */
break;
default:
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
- exit (1);
+ usage (EXIT_FAILURE);
}
- if (optind == argc)
+ if (argc - optind != 1)
{
- fprintf (stderr, _("%s: no grammar file given\n"), program_name);
- exit (1);
+ if (argc - optind < 1)
+ error (0, 0, _("missing operand after `%s'"), argv[argc - 1]);
+ else
+ error (0, 0, _("extra operand `%s'"), argv[optind + 1]);
+ usage (EXIT_FAILURE);
}
- if (optind < argc - 1)
- fprintf (stderr, _("%s: extra arguments ignored after `%s'\n"),
- program_name, argv[optind]);
infile = argv[optind];
}
projects / bison.git / blobdiff