warnings: rename the categories

Forthcoming changes will use the warning categories much more often,
so shortening them will improve readability.

* src/complain.c, src/complain.h, src/conflicts.c,
* src/getargs.c, src/getargs.h, src/gram.c (enum warnings):
s/warnings_/W/g.

src/complain.c

@@ -100,7 +100,7 @@ void
 set_warning_issued (void)
 {
   static bool warning_issued = false;
-  if (!warning_issued && (warnings_flag & warnings_error))
+  if (!warning_issued && (warnings_flag & Werror))
     {
       fprintf (stderr, "%s: warnings being treated as errors\n", program_name);
       complaint_issued = true;
@@ -111,7 +111,7 @@ set_warning_issued (void)
 void
 warn_at (location loc, const char *message, ...)
 {
-  if (!(warnings_flag & warnings_other))
+  if (!(warnings_flag & Wother))
     return;
   set_warning_issued ();
   ERROR_MESSAGE (&loc, _("warning"), message);
@@ -121,7 +121,7 @@ void
 warn_at_indent (location loc, unsigned *indent,
                 const char *message, ...)
 {
-  if (!(warnings_flag & warnings_other))
+  if (!(warnings_flag & Wother))
     return;
   set_warning_issued ();
   indent_ptr = indent;
@@ -131,7 +131,7 @@ warn_at_indent (location loc, unsigned *indent,
 void
 warn (const char *message, ...)
 {
-  if (!(warnings_flag & warnings_other))
+  if (!(warnings_flag & Wother))
     return;
   set_warning_issued ();
   ERROR_MESSAGE (NULL, _("warning"), message);
@@ -179,7 +179,7 @@ yacc_at (location loc, const char *message, ...)
       ERROR_MESSAGE (&loc, NULL, message);
       complaint_issued = true;
     }
-  else if (warnings_flag & warnings_yacc)
+  else if (warnings_flag & Wyacc)
     {
       set_warning_issued ();
       ERROR_MESSAGE (&loc, _("warning"), message);
@@ -189,7 +189,7 @@ yacc_at (location loc, const char *message, ...)
 void
 midrule_value_at (location loc, const char *message, ...)
 {
-  if (!(warnings_flag & warnings_midrule_values))
+  if (!(warnings_flag & Wmidrule_values))
     return;
   set_warning_issued ();
   ERROR_MESSAGE (&loc, _("warning"), message);

src/complain.h

@@ -26,14 +26,14 @@ extern "C" {
 # endif
 
 /** Record that a warning is about to be issued, and treat it as an
-    error if <tt>warnings_flag & warnings_error</tt>.  This is exported
+    error if <tt>warnings_flag & Werror</tt>.  This is exported
     only for the sake of Yacc-compatible conflict reports in conflicts.c.
     All other warnings should be implemented in complain.c and should use
     the normal warning format.  */
 void set_warning_issued (void);
 
 /** Informative messages, but we proceed.  Report iff
-    <tt>warnings_flag & warnings_other</tt>.  */
+    <tt>warnings_flag & Wother</tt>.  */
 
 void warn (char const *format, ...)
   __attribute__ ((__format__ (__printf__, 1, 2)));
@@ -70,7 +70,7 @@ void yacc_at (location loc, char const *format, ...)
   __attribute__ ((__format__ (__printf__, 2, 3)));
 
 /** A midrule-value warning.  Report iff
-    <tt>warnings_flag & warnings_midrule_values</tt>.  */
+    <tt>warnings_flag & Wmidrule_values</tt>.  */
 
 void midrule_value_at (location loc, char const *format, ...)
   __attribute__ ((__format__ (__printf__, 2, 3)));

src/conflicts.c

@@ -601,9 +601,9 @@ conflicts_print (void)
   /* Report the total number of conflicts on STDERR.  */
   if (expected_sr_conflicts == -1 && expected_rr_conflicts == -1)
     {
-      if (!(warnings_flag & warnings_conflicts_sr))
+      if (!(warnings_flag & Wconflicts_sr))
         src_total = 0;
-      if (!(warnings_flag & warnings_conflicts_rr))
+      if (!(warnings_flag & Wconflicts_rr))
         rrc_total = 0;
     }
   if (src_total | rrc_total)

src/getargs.c

@@ -61,8 +61,8 @@ bool glr_parser = false;
 
 int report_flag = report_none;
 int trace_flag = trace_none;
-int warnings_flag = warnings_conflicts_sr | warnings_conflicts_rr
-                    | warnings_other;
+int warnings_flag = Wconflicts_sr | Wconflicts_rr
+                    | Wother;
 
 static struct bison_language const valid_languages[] = {
   { "c", "c-skel.m4", ".c", ".h", true },
@@ -129,15 +129,15 @@ flags_argmatch (const char *option,
  *
  *  \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_all    the all value.
  *  \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, \
-                  FlagName ## _all, &FlagName ## _flag, Args)
+                  All, &FlagName ## _flag, Args)
 
 
 /*----------------------.
@@ -241,14 +241,14 @@ static const char * const warnings_args[] =
 
 static 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,
+  Wother,
+  Wall,
+  Werror
 };
 
 ARGMATCH_VERIFY (warnings_args, warnings_types);
@@ -584,7 +584,7 @@ getargs (int argc, char *argv[])
         break;
 
       case 'T':
-        FLAGS_ARGMATCH (trace, optarg);
+        FLAGS_ARGMATCH (trace, optarg, trace_all);
         break;
 
       case 'V':
@@ -592,7 +592,7 @@ getargs (int argc, char *argv[])
         exit (EXIT_SUCCESS);
 
       case 'W':
-        FLAGS_ARGMATCH (warnings, optarg);
+        FLAGS_ARGMATCH (warnings, optarg, Wall);
         break;
 
       case 'b':
@@ -638,7 +638,7 @@ getargs (int argc, char *argv[])
         break;
 
       case 'r':
-        FLAGS_ARGMATCH (report, optarg);
+        FLAGS_ARGMATCH (report, optarg, report_all);
         break;
 
       case 't':

src/getargs.h

@@ -114,14 +114,14 @@ extern int trace_flag;
 
 enum warnings
   {
-    warnings_none             = 0,      /**< Issue no warnings.  */
-    warnings_error            = 1 << 0, /**< Warnings are treated as errors.  */
-    warnings_midrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
-    warnings_yacc             = 1 << 2, /**< POSIXME.  */
-    warnings_conflicts_sr     = 1 << 3, /**< S/R conflicts.  */
-    warnings_conflicts_rr     = 1 << 4, /**< R/R conflicts.  */
-    warnings_other            = 1 << 5, /**< All other warnings.  */
-    warnings_all              = ~warnings_error /**< All above warnings.  */
+    Wnone             = 0,      /**< Issue no warnings.  */
+    Werror            = 1 << 0, /**< Warnings are treated as errors.  */
+    Wmidrule_values   = 1 << 1, /**< Unset or unused midrule values.  */
+    Wyacc             = 1 << 2, /**< POSIXME.  */
+    Wconflicts_sr     = 1 << 3, /**< S/R conflicts.  */
+    Wconflicts_rr     = 1 << 4, /**< R/R conflicts.  */
+    Wother            = 1 << 5, /**< All other warnings.  */
+    Wall              = ~Werror /**< All above warnings.  */
   };
 /** What warnings are issued.  */
 extern int warnings_flag;

src/gram.c

@@ -309,7 +309,7 @@ grammar_rules_useless_report (const char *message)
     if (!rules[r].useful)
       {
         warn_at (rules[r].location, "%s: ", message);
-        if (warnings_flag & warnings_other)
+        if (warnings_flag & Wother)
           {
             rule_print (&rules[r], stderr);
             fflush (stderr);