/* Parse command line arguments for Bison.
Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006 Free Software Foundation, Inc.
+ 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
- Bison is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- Bison is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with Bison; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "system.h"
+#include "revision.h"
#include <argmatch.h>
+#include <c-strcase.h>
+#include <configmake.h>
#include <error.h>
/* Hack to get <getopt.h> to declare getopt with a prototype. */
bool graph_flag;
bool locations_flag;
bool no_lines_flag;
-bool no_parser_flag;
bool token_table_flag;
bool yacc_flag; /* for -y */
bool nondeterministic_parser = false;
bool glr_parser = false;
+bool pull_parser = true;
bool pure_parser = false;
+bool push_parser = false;
int report_flag = report_none;
int trace_flag = trace_none;
+int warnings_flag = warnings_none;
+static struct bison_language const valid_languages[] = {
+ { "c", "c-skel.m4", ".c", ".h", true },
+ { "c++", "c++-skel.m4", ".cc", ".hh", true },
+ { "java", "java-skel.m4", ".java", ".java", false },
+ { "", "", "", "", false }
+};
+
+static int skeleton_prio = 2;
const char *skeleton = NULL;
+static int language_prio = 2;
+struct bison_language const *language = &valid_languages[0];
const char *include = NULL;
-extern char *program_name;
+char *program_name;
+
+
+/** Decode an option's set of keys.
+ *
+ * \param option option being decoded.
+ * \param keys array of valid subarguments.
+ * \param values array of corresponding (int) values.
+ * \param flags the flags to update
+ * \param args colon separated list of effective subarguments to decode.
+ * If 0, then activate all the flags.
+ *
+ * The special value 0 resets the flags to 0.
+ */
+static void
+flags_argmatch (const char *option,
+ const char * const keys[], const int values[],
+ int *flags, char *args)
+{
+ if (args)
+ {
+ args = strtok (args, ",");
+ while (args)
+ {
+ int value = XARGMATCH (option, args, keys, values);
+ if (value == 0)
+ *flags = 0;
+ else
+ *flags |= value;
+ args = strtok (NULL, ",");
+ }
+ }
+ else
+ *flags = ~0;
+}
+
+/** Decode a set of sub arguments.
+ *
+ * \param FlagName the flag familly to update.
+ * \param Args the effective sub arguments to decode.
+ *
+ * \arg FlagName_args the list of keys.
+ * \arg FlagName_types the list of values.
+ * \arg FlagName_flag the flag to update.
+ */
+#define FLAGS_ARGMATCH(FlagName, Args) \
+ flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
+ &FlagName ## _flag, Args)
+
+
+/*----------------------.
+| --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", "look-ahead",
+ "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_lookahead_tokens,
+ report_states | report_lookahead_tokens,
+ report_states | report_lookahead_tokens,
+ report_states | report_solved_conflicts,
+ report_all
+};
+
+ARGMATCH_VERIFY (report_args, report_types);
/*---------------------.
{
/* In a series of synonyms, present the most meaningful first, so
that argmatch_valid be more readable. */
- "none - no report",
+ "none - no traces",
"scan - grammar scanner traces",
"parse - grammar parser traces",
- "automaton - contruction of the automaton",
+ "automaton - construction of the automaton",
"bitsets - use of bitsets",
- "grammar - reading, reducing of the grammar",
+ "grammar - reading, reducing the grammar",
"resource - memory consumption (where available)",
"sets - grammar sets: firsts, nullable etc.",
"tools - m4 invocation",
ARGMATCH_VERIFY (trace_args, trace_types);
-static void
-trace_argmatch (char *args)
-{
- if (args)
- {
- args = strtok (args, ",");
- do
- {
- int trace = XARGMATCH ("--trace", args,
- trace_args, trace_types);
- if (trace == trace_none)
- trace_flag = trace_none;
- else
- trace_flag |= trace;
- }
- while ((args = strtok (NULL, ",")));
- }
- else
- trace_flag = trace_all;
-}
+/*------------------------.
+| --warnings's handling. |
+`------------------------*/
-/*----------------------.
-| --report's handling. |
-`----------------------*/
-
-static const char * const report_args[] =
+static const char * const warnings_args[] =
{
/* In a series of synonyms, present the most meaningful first, so
that argmatch_valid be more readable. */
- "none",
- "state", "states",
- "itemset", "itemsets",
- "look-ahead", "lookahead", "lookaheads",
- "solved",
- "all",
+ "none - no warnings",
+ "midrule-values - unset or unused midrule values",
+ "yacc - incompatibilities with POSIX YACC",
+ "all - all of the above",
+ "error - warnings are errors",
0
};
-static const int report_types[] =
+static const int warnings_types[] =
{
- report_none,
- report_states, report_states,
- report_states | report_itemsets, report_states | report_itemsets,
- report_states | report_look_ahead_tokens,
- report_states | report_look_ahead_tokens,
- report_states | report_look_ahead_tokens,
- report_states | report_solved_conflicts,
- report_all
+ warnings_none,
+ warnings_midrule_values,
+ warnings_yacc,
+ warnings_all,
+ warnings_error
};
-ARGMATCH_VERIFY (report_args, report_types);
-
-static void
-report_argmatch (char *args)
-{
- 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, ",")));
-}
+ARGMATCH_VERIFY (warnings_args, warnings_types);
/*-------------------------------------------.
program_name);
else
{
- /* Some efforts were made to ease the translators' task, please
- continue. */
+ printf (_("Usage: %s [OPTION]... FILE\n"), program_name);
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);
+Generate LALR(1) and GLR parsers.\n\
+\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);
+Mandatory arguments to long options are mandatory for short options too.\n\
+"), stdout);
fputs (_("\
+\n\
Operation modes:\n\
-h, --help display this help and exit\n\
-V, --version output version information and exit\n\
--print-localedir output directory containing locale-dependent data\n\
- -y, --yacc emulate POSIX yacc\n"), stdout);
- putc ('\n', stdout);
+ -y, --yacc emulate POSIX Yacc\n\
+\n\
+"), stdout);
fputs (_("\
Parser:\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\
+\n\
"), stdout);
- putc ('\n', stdout);
fputs (_("\
Output:\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\
+ -g, --graph also output a graph of the automaton\n\
+\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\
- `look-ahead' explicitly associate look-ahead tokens to items\n\
+ `lookahead' explicitly associate lookahead tokens 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);
+ printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
}
exit (status);
continue. */
printf (_("bison (GNU Bison) %s"), VERSION);
putc ('\n', stdout);
+ printf ("%s", revision);
fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout);
putc ('\n', stdout);
}
+/*-------------------------------------.
+| --skeleton and --language handling. |
+`--------------------------------------*/
+
+void
+skeleton_arg (char const *arg, int prio, location const *loc)
+{
+ if (prio < skeleton_prio)
+ {
+ skeleton_prio = prio;
+ skeleton = arg;
+ }
+ else if (prio == skeleton_prio)
+ {
+ char const *msg =
+ _("multiple skeleton declarations are invalid");
+ if (loc)
+ complain_at (*loc, msg);
+ else
+ complain (msg);
+ }
+}
+
+void
+language_argmatch (char const *arg, int prio, location const *loc)
+{
+ char const *msg;
+
+ if (prio < language_prio)
+ {
+ int i;
+ for (i = 0; valid_languages[i].language[0]; i++)
+ if (c_strcasecmp (arg, valid_languages[i].language) == 0)
+ {
+ language_prio = prio;
+ language = &valid_languages[i];
+ return;
+ }
+ msg = _("invalid language `%s'");
+ }
+ else if (language_prio == prio)
+ msg = _("multiple language declarations are invalid");
+ else
+ return;
+
+ if (loc)
+ complain_at (*loc, msg, arg);
+ else
+ complain (msg, arg);
+}
+
/*----------------------.
| Process the options. |
`----------------------*/
/* Shorts options. */
-static char const short_options[] = "yvegdhr:ltknVo:b:p:S:T::";
+static char const short_options[] = "yvegdhr:L:ltknVo:b:p:S:T::W";
/* Values for long options that do not have single-letter equivalents. */
enum
static struct option const long_options[] =
{
/* Operation modes. */
- { "help", no_argument, 0, 'h' },
- { "version", no_argument, 0, 'V' },
- { "print-localedir", no_argument, 0, PRINT_LOCALEDIR_OPTION },
+ { "help", no_argument, 0, 'h' },
+ { "version", no_argument, 0, 'V' },
+ { "print-localedir", no_argument, 0, PRINT_LOCALEDIR_OPTION },
+ { "warnings", optional_argument, 0, 'W' },
/* Parser. */
{ "name-prefix", required_argument, 0, 'p' },
{ "debug", no_argument, 0, 't' },
{ "locations", no_argument, 0, LOCATIONS_OPTION },
{ "no-lines", no_argument, 0, 'l' },
- { "no-parser", no_argument, 0, 'n' },
{ "raw", no_argument, 0, 0 },
{ "skeleton", required_argument, 0, 'S' },
+ { "language", required_argument, 0, 'L' },
{ "token-table", no_argument, 0, 'k' },
{0, 0, 0, 0}
/* Certain long options cause getopt_long to return 0. */
break;
- case 'y':
- yacc_flag = true;
+ case 'b':
+ spec_file_prefix = AS_FILE_NAME (optarg);
break;
- case 'h':
- usage (EXIT_SUCCESS);
-
- case 'V':
- version ();
- exit (EXIT_SUCCESS);
-
- case PRINT_LOCALEDIR_OPTION:
- printf ("%s\n", LOCALEDIR);
- exit (EXIT_SUCCESS);
-
case 'g':
/* Here, the -g and --graph=FILE options are differentiated. */
graph_flag = true;
if (optarg)
- spec_graph_file = AS_FILE_NAME (optarg);
+ spec_graph_file = xstrdup (AS_FILE_NAME (optarg));
break;
- case 'v':
- report_flag |= report_states;
+ case 'h':
+ usage (EXIT_SUCCESS);
+
+ case 'L':
+ language_argmatch (optarg, 0, NULL);
break;
case 'S':
- skeleton = AS_FILE_NAME (optarg);
+ skeleton_arg (AS_FILE_NAME (optarg), 0, NULL);
break;
case 'I':
/* Here, the -d and --defines options are differentiated. */
defines_flag = true;
if (optarg)
- spec_defines_file = AS_FILE_NAME (optarg);
+ spec_defines_file = xstrdup (AS_FILE_NAME (optarg));
+ break;
+
+ case 'k':
+ token_table_flag = true;
break;
case 'l':
no_lines_flag = true;
break;
- case LOCATIONS_OPTION:
- locations_flag = true;
+ case 'o':
+ spec_outfile = AS_FILE_NAME (optarg);
break;
- case 'k':
- token_table_flag = true;
+ case 'p':
+ spec_name_prefix = optarg;
+ break;
+
+ case 'r':
+ FLAGS_ARGMATCH (report, optarg);
break;
- case 'n':
- no_parser_flag = true;
+ case 'T':
+ FLAGS_ARGMATCH (trace, optarg);
break;
case 't':
debug_flag = true;
break;
- case 'o':
- spec_outfile = AS_FILE_NAME (optarg);
- break;
+ case 'V':
+ version ();
+ exit (EXIT_SUCCESS);
- case 'b':
- spec_file_prefix = AS_FILE_NAME (optarg);
+ case 'v':
+ report_flag |= report_states;
break;
- case 'p':
- spec_name_prefix = optarg;
+ case 'y':
+ yacc_flag = true;
break;
- case 'r':
- report_argmatch (optarg);
+ case 'W':
+ if (optarg)
+ FLAGS_ARGMATCH (warnings, optarg);
+ else
+ warnings_flag |= warnings_all;
break;
- case 'T':
- trace_argmatch (optarg);
+ case LOCATIONS_OPTION:
+ locations_flag = true;
break;
+ case PRINT_LOCALEDIR_OPTION:
+ printf ("%s\n", LOCALEDIR);
+ exit (EXIT_SUCCESS);
+
default:
usage (EXIT_FAILURE);
}
projects / bison.git / blobdiff