options: simplify the handling of -W

[bison.git] / src / getargs.c

diff --git a/src/getargs.c b/src/getargs.c
index 5e04ab0fcbcad77653435790c0a7e75b47ae4eb1..cebfd783a8997b871bf8438834eb4eb9369118a5 100644 (file)
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,6 +1,6 @@
 /* Parse command line arguments for Bison.
 
 /* 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.
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.


@@ -26,20 +26,7 @@
 #include <c-strcase.h>
 #include <configmake.h>
 #include <error.h>
 #include <c-strcase.h>
 #include <configmake.h>
 #include <error.h>

-
-/* Hack to get <getopt.h> to declare getopt with a prototype.  */
-#if lint && ! defined __GNU_LIBRARY__
-# define __GNU_LIBRARY__
-# define HACK_FOR___GNU_LIBRARY___PROTOTYPE 1
-#endif
-

 #include <getopt.h>
 #include <getopt.h>

-
-#ifdef HACK_FOR___GNU_LIBRARY___PROTOTYPE
-# undef __GNU_LIBRARY__
-# undef HACK_FOR___GNU_LIBRARY___PROTOTYPE
-#endif
-

 #include <progname.h>
 
 #include "complain.h"
 #include <progname.h>
 
 #include "complain.h"


@@ -59,10 +46,9 @@ bool yacc_flag; /* for -y */
 bool nondeterministic_parser = false;
 bool glr_parser = false;
 
 bool nondeterministic_parser = false;
 bool glr_parser = false;
 

+int feature_flag = feature_caret;

 int report_flag = report_none;
 int trace_flag = trace_none;
 int report_flag = report_none;
 int trace_flag = trace_none;

-int warnings_flag = warnings_conflicts_sr | warnings_conflicts_rr
-                    | warnings_other;

 
 static struct bison_language const valid_languages[] = {
   { "c", "c-skel.m4", ".c", ".h", true },
 
 static struct bison_language const valid_languages[] = {
   { "c", "c-skel.m4", ".c", ".h", true },


@@ -77,67 +63,86 @@ int language_prio = default_prio;
 struct bison_language const *language = &valid_languages[0];
 const char *include = NULL;
 
 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 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.

  *
  *  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
  *
  *  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

+flag_argmatch (const char *option,
+               const char * const keys[], const int values[],
+               int all, int *flags, char *arg, size_t no)
+{
+  int value = 0;
+  value = XARGMATCH (option, arg + no, keys, values);
+
+  if (value)
+    {
+      if (no)
+        *flags &= ~value;
+      else
+        *flags |= value;
+    }
+  else
+    {
+      if (no)
+        *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)
 flags_argmatch (const char *option,
                 const char * const keys[], const int values[],
                 int all, int *flags, char *args)
 {
   if (args)

-    {
-      args = strtok (args, ",");
-      while (args)
-        {
-          int no = strncmp (args, "no-", 3) == 0 ? 3 : 0;
-          int value = XARGMATCH (option, args + no, keys, values);
-          if (value == 0)
-            {
-              if (no)
-                *flags |= all;
-              else
-                *flags &= ~all;
-            }
-          else
-            {
-              if (no)
-                *flags &= ~value;
-              else
-                *flags |= value;
-            }
-          args = strtok (NULL, ",");
-        }
-    }
+    for (args = strtok (args, ","); args; args = strtok (NULL, ","))
+      {
+        size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
+        flag_argmatch (option, keys,
+                       values, all, flags, args, no);
+      }

   else
     *flags |= all;
 }
 
   else
     *flags |= all;
 }
 

+

 /** Decode a set of sub arguments.
  *
  *  \param FlagName  the flag familly to update.
  *  \param Args      the effective sub arguments to decode.
 /** Decode a set of sub arguments.
  *
  *  \param FlagName  the flag familly to update.
  *  \param Args      the effective sub arguments to decode.

+ *  \param All       the "all" value.

  *
  *  \arg FlagName_args   the list of keys.
  *  \arg FlagName_types  the list of values.
  *
  *  \arg FlagName_args   the list of keys.
  *  \arg FlagName_types  the list of values.

- *  \arg FlagName_all    the all value.

  *  \arg FlagName_flag   the flag to update.
  */
  *  \arg FlagName_flag   the flag to update.
  */

-#define FLAGS_ARGMATCH(FlagName, Args)                                  \
+#define FLAGS_ARGMATCH(FlagName, Args, All)                             \

   flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
   flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \

-                  FlagName ## _all, &FlagName ## _flag, Args)
+                  All, &FlagName ## _flag, Args)

 
 
 /*----------------------.
 
 
 /*----------------------.


@@ -178,8 +183,6 @@ ARGMATCH_VERIFY (report_args, report_types);
 
 static const char * const trace_args[] =
 {
 
 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",
   "none       - no traces",
   "scan       - grammar scanner traces",
   "parse      - grammar parser traces",


@@ -224,35 +227,125 @@ ARGMATCH_VERIFY (trace_args, trace_types);
 | --warnings's handling.  |
 `------------------------*/
 
 | --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",
-  "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
 };
 
   0
 };
 

-static const int warnings_types[] =
+const int warnings_types[] =

 {
 {

-  warnings_none,
-  warnings_midrule_values,
-  warnings_yacc,
-  warnings_conflicts_sr,
-  warnings_conflicts_rr,
-  warnings_other,
-  warnings_all,
-  warnings_error
+  Wnone,
+  Wmidrule_values,
+  Wyacc,
+  Wconflicts_sr,
+  Wconflicts_rr,
+  Wdeprecated,
+  Wprecedence,
+  Wother,
+  Wall,
+  Werror

 };
 
 ARGMATCH_VERIFY (warnings_args, 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.  |
 
 /*-------------------------------------------.
 | Display the help message and exit STATUS.  |


@@ -297,24 +390,25 @@ 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\
       --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\
 \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\
       --locations                  enable location support\n\
   -S, --skeleton=FILE              specify the skeleton to use\n\
   -t, --debug                      instrument the parser for tracing\n\
                                    same as `-Dparse.trace'\n\
       --locations                  enable location support\n\

-  -D, --define=NAME[=VALUE]        similar to `%define NAME \"VALUE\"'\n\
-  -F, --force-define=NAME[=VALUE]  override `%define NAME \"VALUE\"'\n\
+  -D, --define=NAME[=VALUE]        similar to '%define NAME \"VALUE\"'\n\
+  -F, --force-define=NAME[=VALUE]  override '%define NAME \"VALUE\"'\n\

   -p, --name-prefix=PREFIX         prepend PREFIX to the external symbols\n\
   -p, --name-prefix=PREFIX         prepend PREFIX to the external symbols\n\

-  -l, --no-lines                   don't generate `#line' directives\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\
   -k, --token-table                include a table of token names\n\

-\n\

 "), stdout);
 "), 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.  */
 
       /* Keep -d and --defines separate so that ../build-aux/cross-options.pl
        * won't assume that -d also takes an argument.  */


@@ -330,22 +424,24 @@ 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\
   -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);
 "), stdout);

+      putc ('\n', stdout);

 
       fputs (_("\
 Warning categories include:\n\
 
       fputs (_("\
 Warning categories include:\n\

-  `midrule-values'  unset or unused midrule values\n\
-  `yacc'            incompatibilities with POSIX Yacc\n\
-  `conflicts-sr'    S/R conflicts (enabled by default)\n\
-  `conflicts-rr'    R/R conflicts (enabled by default)\n\
-  `other'           all other warnings (enabled by default)\n\
-  `all'             all the warnings\n\
-  `no-CATEGORY'     turn off warnings in CATEGORY\n\
-  `none'            turn off all the warnings\n\
-  `error'           treat warnings as errors\n\
-\n\
+  `midrule-values'    unset or unused midrule values\n\
+  `yacc'              incompatibilities with POSIX Yacc\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\
+  `none'              turn off all the warnings\n\
+  `error[=CATEGORY]'  treat warnings as errors\n\

 "), stdout);
 "), stdout);

+      putc ('\n', stdout);

 
       fputs (_("\
 THINGS is a list of comma separated words that can include:\n\
 
       fputs (_("\
 THINGS is a list of comma separated words that can include:\n\


@@ -356,8 +452,34 @@ 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);
   `all'          include all the above information\n\
   `none'         disable the report\n\
 "), stdout);

+      putc ('\n', stdout);

 
 

-      printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+      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);
+      printf (_("%s home page: <%s>.\n"), PACKAGE_NAME, PACKAGE_URL);
+      fputs (_("General help using GNU software: "
+               "<http://www.gnu.org/gethelp/>.\n"),
+             stdout);
+      /* Don't output this redundant message for English locales.
+         Note we still output for 'C' so that it gets included in the
+         man page.  */
+      const char *lc_messages = setlocale (LC_MESSAGES, NULL);
+      if (lc_messages && !STREQ (lc_messages, "en_"))
+        /* TRANSLATORS: Replace LANG_CODE in this URL with your language
+           code <http://translationproject.org/team/LANG_CODE.html> to
+           form one of the URLs at http://translationproject.org/team/.
+           Otherwise, replace the entire URL with your translation team's
+           email address.  */
+        fputs (_("Report translation bugs to "
+                 "<http://translationproject.org/team/>.\n"), stdout);
+      fputs (_("For complete documentation, run: info bison.\n"), stdout);

     }
 
   exit (status);
     }
 
   exit (status);


@@ -403,7 +525,8 @@ skeleton_arg (char const *arg, int prio, location loc)
       skeleton = arg;
     }
   else if (prio == skeleton_prio)
       skeleton = arg;
     }
   else if (prio == skeleton_prio)

-    complain_at (loc, _("multiple skeleton declarations are invalid"));
+    complain (&loc, complaint,
+              _("multiple skeleton declarations are invalid"));

 }
 
 void
 }
 
 void


@@ -428,7 +551,7 @@ language_argmatch (char const *arg, int prio, location loc)
   else
     return;
 
   else
     return;
 

-  complain_at (loc, msg, quotearg_colon (arg));
+  complain (&loc, complaint, msg, quotearg_colon (arg));

 }
 
 /*----------------------.
 }
 
 /*----------------------.


@@ -447,6 +570,7 @@ static char const short_options[] =
   "W::"
   "b:"
   "d"
   "W::"
   "b:"
   "d"

+  "f::"

   "e"
   "g::"
   "h"
   "e"
   "g::"
   "h"


@@ -499,6 +623,7 @@ static struct option const long_options[] =
 
   /* Output.  */
   { "defines",     optional_argument,   0,   'd' },
 
   /* Output.  */
   { "defines",     optional_argument,   0,   'd' },

+  { "feature",     optional_argument,   0,   'f' },

 
   /* Operation modes.  */
   { "fixed-output-files", no_argument,  0,   'y' },
 
   /* Operation modes.  */
   { "fixed-output-files", no_argument,  0,   'y' },


@@ -533,7 +658,7 @@ command_line_location (void)
 {
   location res;
   /* "<command line>" is used in GCC's messages about -D. */
 {
   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;
 }
   res.end = res.start;
   return res;
 }


@@ -559,7 +684,7 @@ getargs (int argc, char *argv[])
       case 'F': /* -FNAME[=VALUE]. */
         {
           char* name = optarg;
       case 'F': /* -FNAME[=VALUE]. */
         {
           char* name = optarg;

-          char* value = mbschr (optarg, '=');
+          char* value = strchr (optarg, '=');

           if (value)
             *value++ = 0;
           muscle_percent_define_insert (name, command_line_location (),
           if (value)
             *value++ = 0;
           muscle_percent_define_insert (name, command_line_location (),


@@ -584,15 +709,19 @@ getargs (int argc, char *argv[])
         break;
 
       case 'T':
         break;
 
       case 'T':

-        FLAGS_ARGMATCH (trace, optarg);
+        FLAGS_ARGMATCH (trace, optarg, trace_all);

         break;
 
       case 'V':
         version ();
         exit (EXIT_SUCCESS);
 
         break;
 
       case 'V':
         version ();
         exit (EXIT_SUCCESS);
 

+      case 'f':
+        FLAGS_ARGMATCH (feature, optarg, feature_all);
+        break;
+

       case 'W':
       case 'W':

-        FLAGS_ARGMATCH (warnings, optarg);
+        warnings_argmatch (optarg);

         break;
 
       case 'b':
         break;
 
       case 'b':


@@ -603,13 +732,19 @@ getargs (int argc, char *argv[])
         /* Here, the -d and --defines options are differentiated.  */
         defines_flag = true;
         if (optarg)
         /* Here, the -d and --defines options are differentiated.  */
         defines_flag = true;
         if (optarg)

-          spec_defines_file = xstrdup (AS_FILE_NAME (optarg));
+          {
+            free (spec_defines_file);
+            spec_defines_file = xstrdup (AS_FILE_NAME (optarg));
+          }

         break;
 
       case 'g':
         graph_flag = true;
         if (optarg)
         break;
 
       case 'g':
         graph_flag = true;
         if (optarg)

-          spec_graph_file = xstrdup (AS_FILE_NAME (optarg));
+          {
+            free (spec_graph_file);
+            spec_graph_file = xstrdup (AS_FILE_NAME (optarg));
+          }

         break;
 
       case 'h':
         break;
 
       case 'h':


@@ -632,7 +767,7 @@ getargs (int argc, char *argv[])
         break;
 
       case 'r':
         break;
 
       case 'r':

-        FLAGS_ARGMATCH (report, optarg);
+        FLAGS_ARGMATCH (report, optarg, report_all);

         break;
 
       case 't':
         break;
 
       case 't':


@@ -648,10 +783,15 @@ getargs (int argc, char *argv[])
       case 'x':
         xml_flag = true;
         if (optarg)
       case 'x':
         xml_flag = true;
         if (optarg)

-          spec_xml_file = xstrdup (AS_FILE_NAME (optarg));
+          {
+            free (spec_xml_file);
+            spec_xml_file = xstrdup (AS_FILE_NAME (optarg));
+          }

         break;
 
       case 'y':
         break;
 
       case 'y':

+        warnings_flag |= Wyacc;
+        errors_flag |= Wyacc;

         yacc_flag = true;
         break;
 
         yacc_flag = true;
         break;
 


@@ -665,10 +805,11 @@ getargs (int argc, char *argv[])
         exit (EXIT_SUCCESS);
 
       case PRINT_DATADIR_OPTION:
         exit (EXIT_SUCCESS);
 
       case PRINT_DATADIR_OPTION:

-        printf ("%s\n", compute_pkgdatadir ());
+        printf ("%s\n", pkgdatadir ());

         exit (EXIT_SUCCESS);
 
       case REPORT_FILE_OPTION:
         exit (EXIT_SUCCESS);
 
       case REPORT_FILE_OPTION:

+        free (spec_verbose_file);

         spec_verbose_file = xstrdup (AS_FILE_NAME (optarg));
         break;
 
         spec_verbose_file = xstrdup (AS_FILE_NAME (optarg));
         break;