/* Parse command line arguments for Bison.
- Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 Free Software
+ Copyright (C) 1984, 1986, 1989, 1992, 2000-2013 Free Software
Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
bool nondeterministic_parser = false;
bool glr_parser = false;
+int feature_flag = feature_caret;
int report_flag = report_none;
int trace_flag = trace_none;
* If null, then activate all the flags.
* \param no length of the potential "no-" prefix.
* Can be 0 or 3. If 3, negate the action of the subargument.
- * \param err length of a potential "error=".
- * Can be 0 or 6. If 6, treat the subargument as a CATEGORY
*
* If VALUE != 0 then KEY sets flags and no-KEY clears them.
* If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all
static void
flag_argmatch (const char *option,
const char * const keys[], const int values[],
- int all, int *flags, char *arg, size_t no, size_t err)
+ int all, int *flags, char *arg, size_t no)
{
int value = 0;
- if (!err || arg[no + err++] != '\0')
- value = XARGMATCH (option, arg + no + err, keys, values);
+ value = XARGMATCH (option, arg + no, keys, values);
if (value)
{
if (no)
*flags &= ~value;
else
- {
- if (err)
- warnings_flag |= value;
- *flags |= value;
- }
+ *flags |= value;
}
else
{
- /* With a simpler 'if (no)' version, -Werror means -Werror=all
- (or rather, -Werror=no-none, but that syntax is invalid).
- The difference is:
- - Werror activates all errors, but not the warnings
- - Werror=all activates errors, and all warnings */
- if (no ? !err : err)
+ if (no)
*flags |= all;
else
*flags &= ~all;
}
}
+
/** Decode an option's set of keys.
*
* \param option option being decoded.
for (args = strtok (args, ","); args; args = strtok (NULL, ","))
{
size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
- size_t err = STRPREFIX_LIT ("error", args + no) ? 5 : 0;
-
flag_argmatch (option, keys,
- values, all, err ? &errors_flag : flags,
- args, no, err);
+ values, all, flags, args, no);
}
else
*flags |= all;
}
+
/** Decode a set of sub arguments.
*
* \param FlagName the flag familly to update.
static const char * const trace_args[] =
{
- /* In a series of synonyms, present the most meaningful first, so
- that argmatch_valid be more readable. */
"none - no traces",
"scan - grammar scanner traces",
"parse - grammar parser traces",
| --warnings's handling. |
`------------------------*/
-static const char * const warnings_args[] =
+/** Decode a single argument from -W.
+ *
+ * \param flags the flags to update
+ * \param arg the subarguments to decode.
+ * If null, then activate all the flags.
+ * \param no length of the potential "no-" prefix.
+ * Can be 0 or 3. If 3, negate the action of the subargument.
+ * \param err length of a potential "error=".
+ * Can be 0 or 5. If 5, treat the subargument as a CATEGORY.
+ *
+ * If VALUE != 0 then KEY sets flags and no-KEY clears them.
+ * If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all
+ * flags from \c all. Thus no-none = all and no-all = none.
+ */
+static void
+warning_argmatch (int *flags, char *arg, size_t no, size_t err)
{
- /* In a series of synonyms, present the most meaningful first, so
- that argmatch_valid be more readable. */
- "none - no warnings",
- "midrule-values - unset or unused midrule values",
- "yacc - incompatibilities with POSIX Yacc",
- "conflicts-sr - S/R conflicts",
- "conflicts-rr - R/R conflicts",
- "deprecated - obsolete constructs",
- "other - all other warnings",
- "all - all of the above",
- "error - warnings are errors",
+ int value = 0;
+ if (!err || arg[no + err++] != '\0')
+ value = XARGMATCH ("--warning", arg + no + err,
+ warnings_args, warnings_types);
+
+ if (value)
+ {
+ if (no)
+ *flags &= ~value;
+ else
+ {
+ if (err)
+ warnings_flag |= value;
+ *flags |= value;
+ }
+ }
+ else
+ {
+ /* With a simpler 'if (no)' version, -Werror means -Werror=all
+ (or rather, -Werror=no-none, but that syntax is invalid).
+ The difference is:
+ - Werror activates all errors, but not the warnings
+ - Werror=all activates errors, and all warnings */
+ if (no ? !err : err)
+ *flags |= Wall;
+ else
+ *flags &= ~Wall;
+ }
+}
+
+/** Decode a comma-separated list of arguments from -W.
+ *
+ * \param args comma separated list of effective subarguments to decode.
+ * If 0, then activate all the flags.
+ */
+static void
+warnings_argmatch (char *args)
+{
+ if (args)
+ for (args = strtok (args, ","); args; args = strtok (NULL, ","))
+ {
+ size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
+ size_t err = STRPREFIX_LIT ("error", args + no) ? 5 : 0;
+
+ warning_argmatch (err ? &errors_flag : &warnings_flag,
+ args, no, err);
+ }
+ else
+ warnings_flag |= Wall;
+}
+
+const char * const warnings_args[] =
+{
+ "none",
+ "midrule-values",
+ "yacc",
+ "conflicts-sr",
+ "conflicts-rr",
+ "deprecated",
+ "precedence",
+ "other",
+ "all",
+ "error",
0
};
-static const int warnings_types[] =
+const int warnings_types[] =
{
Wnone,
Wmidrule_values,
Wconflicts_sr,
Wconflicts_rr,
Wdeprecated,
+ Wprecedence,
Wother,
Wall,
Werror
ARGMATCH_VERIFY (warnings_args, warnings_types);
+/*-----------------------.
+| --feature's handling. |
+`-----------------------*/
+
+static const char * const feature_args[] =
+{
+ "none",
+ "caret", "diagnostics-show-caret",
+ "all",
+ 0
+};
+
+static const int feature_types[] =
+{
+ feature_none,
+ feature_caret, feature_caret,
+ feature_all
+};
+
+ARGMATCH_VERIFY (feature_args, feature_types);
+
/*-------------------------------------------.
| Display the help message and exit STATUS. |
`-------------------------------------------*/
--print-datadir output directory containing skeletons and XSLT\n\
-y, --yacc emulate POSIX Yacc\n\
-W, --warnings[=CATEGORY] report the warnings falling in CATEGORY\n\
+ -f, --feature[=FEATURE] activate miscellaneous features\n\
\n\
"), stdout);
fputs (_("\
Parser:\n\
-L, --language=LANGUAGE specify the output programming language\n\
- (this is an experimental feature)\n\
-S, --skeleton=FILE specify the skeleton to use\n\
-t, --debug instrument the parser for tracing\n\
same as `-Dparse.trace'\n\
deprecated by '-Dapi.prefix=PREFIX'\n\
-l, --no-lines don't generate '#line' directives\n\
-k, --token-table include a table of token names\n\
-\n\
"), stdout);
+ putc ('\n', stdout);
/* Keep -d and --defines separate so that ../build-aux/cross-options.pl
* won't assume that -d also takes an argument. */
-g, --graph[=FILE] also output a graph of the automaton\n\
-x, --xml[=FILE] also output an XML report of the automaton\n\
(the XML schema is experimental)\n\
-\n\
"), stdout);
+ putc ('\n', stdout);
fputs (_("\
Warning categories include:\n\
`conflicts-sr' S/R conflicts (enabled by default)\n\
`conflicts-rr' R/R conflicts (enabled by default)\n\
`deprecated' obsolete constructs\n\
+ `precedence' useless precedence and associativity\n\
`other' all other warnings (enabled by default)\n\
`all' all the warnings\n\
`no-CATEGORY' turn off warnings in CATEGORY\n\
`all' include all the above information\n\
`none' disable the report\n\
"), stdout);
+ putc ('\n', stdout);
+
+ fputs (_("\
+FEATURE is a list of comma separated words that can include:\n\
+ `caret' show errors with carets\n\
+ `all' all of the above\n\
+ `none' disable all of the above\n\
+ "), stdout);
putc ('\n', stdout);
printf (_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
"W::"
"b:"
"d"
+ "f::"
"e"
"g::"
"h"
/* Output. */
{ "defines", optional_argument, 0, 'd' },
+ { "feature", optional_argument, 0, 'f' },
/* Operation modes. */
{ "fixed-output-files", no_argument, 0, 'y' },
{
location res;
/* "<command line>" is used in GCC's messages about -D. */
- boundary_set (&res.start, uniqstr_new ("<command line>"), optind, -1);
+ boundary_set (&res.start, uniqstr_new ("<command line>"), optind - 1, -1);
res.end = res.start;
return res;
}
version ();
exit (EXIT_SUCCESS);
+ case 'f':
+ FLAGS_ARGMATCH (feature, optarg, feature_all);
+ break;
+
case 'W':
- FLAGS_ARGMATCH (warnings, optarg, Wall);
+ warnings_argmatch (optarg);
break;
case 'b':
projects / bison.git / blobdiff