X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/bb8e56ff67d289d15f1a4dc7f5e1502cd3bbfc24..f3ead217b8636f623399e66bd937b1c51774d4af:/src/getargs.c diff --git a/src/getargs.c b/src/getargs.c index db1c3869..0d43186f 100644 --- a/src/getargs.c +++ b/src/getargs.c @@ -46,6 +46,7 @@ bool yacc_flag; /* for -y */ bool nondeterministic_parser = false; bool glr_parser = false; +int feature_flag = feature_none; int report_flag = report_none; int trace_flag = trace_none; @@ -62,68 +63,82 @@ int language_prio = default_prio; struct bison_language const *language = &valid_languages[0]; const char *include = NULL; - -/** Decode an option's set of keys. +/** Decode an option's key. * * \param option option being decoded. * \param keys array of valid subarguments. * \param values array of corresponding (int) values. * \param all the all value. * \param flags the flags to update - * \param args comma separated list of effective subarguments to decode. - * If 0, then activate all the flags. + * \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 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 * flags from \c all. Thus no-none = all and no-all = none. */ static void -flags_argmatch (const char *option, - const char * const keys[], const int values[], - int all, int *flags, char *args) +flag_argmatch (const char *option, + const char * const keys[], const int values[], + int all, int *flags, char *arg, size_t no, size_t err) { - if (args) + int value = 0; + if (!err || arg[no + err++] != '\0') + value = XARGMATCH (option, arg + no + err, keys, values); + + if (value) { - args = strtok (args, ","); - while (args) + if (no) + *flags &= ~value; + else { - int value = 0; - int *save_flags = flags; - int no = STRPREFIX_LIT ("no-", args) ? 3 : 0; - int err = STRPREFIX_LIT ("error", args + no) ? 5 : 0; - if (err) - flags = &errors_flag; - if (!err || args[no + err++] != '\0') - value = XARGMATCH (option, args + no + err, keys, values); - - if (!value) - { - /* 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 |= all; - else - *flags &= ~all; - } - else - { - if (no) - *flags &= ~value; - else - { - if (err) - warnings_flag |= value; - *flags |= value; - } - } - flags = save_flags; - args = strtok (NULL, ","); + 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 |= all; + else + *flags &= ~all; + } +} +/** 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 all the all value. + * \param flags the flags to update + * \param args comma separated list of effective subarguments to decode. + * If 0, then activate all the flags. + */ +static void +flags_argmatch (const char *option, + const char * const keys[], const int values[], + int all, int *flags, 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; + + flag_argmatch (option, keys, + values, all, err ? &errors_flag : flags, + args, no, err); + } else *flags |= all; } @@ -258,6 +273,27 @@ static const int warnings_types[] = 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. | `-------------------------------------------*/ @@ -301,13 +337,13 @@ Operation modes:\n\ --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\ @@ -318,8 +354,8 @@ Parser:\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. */ @@ -335,8 +371,8 @@ Output:\n\ -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\ @@ -362,6 +398,14 @@ THINGS is a list of comma separated words that can include:\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); @@ -472,6 +516,7 @@ static char const short_options[] = "W::" "b:" "d" + "f::" "e" "g::" "h" @@ -524,6 +569,7 @@ static struct option const long_options[] = /* Output. */ { "defines", optional_argument, 0, 'd' }, + { "feature", optional_argument, 0, 'f' }, /* Operation modes. */ { "fixed-output-files", no_argument, 0, 'y' }, @@ -558,7 +604,7 @@ command_line_location (void) { location res; /* "" is used in GCC's messages about -D. */ - boundary_set (&res.start, uniqstr_new (""), optind, -1); + boundary_set (&res.start, uniqstr_new (""), optind - 1, -1); res.end = res.start; return res; } @@ -616,6 +662,10 @@ getargs (int argc, char *argv[]) version (); exit (EXIT_SUCCESS); + case 'f': + FLAGS_ARGMATCH (feature, optarg, feature_all); + break; + case 'W': FLAGS_ARGMATCH (warnings, optarg, Wall); break;