maint: catch missing gnulib macros.

[bison.git] / src / getargs.c

diff --git a/src/getargs.c b/src/getargs.c
index 876130e02dffa6fe06868859d9760e04bbd99fe6..4e64f302399f39b841058506e653a2d8fac39e50 100644 (file)
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,7 +1,7 @@
 /* Parse command line arguments for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -44,7 +44,7 @@
 #include "complain.h"
 #include "files.h"
 #include "getargs.h"
-#include "muscle_tab.h"
+#include "muscle-tab.h"
 #include "uniqstr.h"
 
 bool debug_flag;
@@ -63,7 +63,8 @@ bool glr_parser = false;
 
 int report_flag = report_none;
 int trace_flag = trace_none;
-int warnings_flag = warnings_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 },
@@ -86,32 +87,46 @@ char *program_name;
  *  \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     colon separated list of effective subarguments to decode.
+ *  \param args     comma separated list of effective subarguments to decode.
  *                  If 0, then activate all the flags.
  *
- *  The special value 0 resets the flags to 0.
+ *  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 *flags, char *args)
+               int all, int *flags, char *args)
 {
   if (args)
     {
       args = strtok (args, ",");
       while (args)
        {
-         int value = XARGMATCH (option, args, keys, values);
+         int no = strncmp (args, "no-", 3) == 0 ? 3 : 0;
+         int value = XARGMATCH (option, args + no, keys, values);
          if (value == 0)
-           *flags = 0;
+           {
+             if (no)
+               *flags |= all;
+             else
+               *flags &= ~all;
+           }
          else
-           *flags |= value;
+           {
+             if (no)
+               *flags &= ~value;
+             else
+               *flags |= value;
+           }
          args = strtok (NULL, ",");
        }
     }
   else
-    *flags = ~0;
+    *flags |= all;
 }
 
 /** Decode a set of sub arguments.
@@ -121,11 +136,12 @@ flags_argmatch (const char *option,
  *
  *  \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)                                 \
   flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
-                 &FlagName ## _flag, Args)
+                 FlagName ## _all, &FlagName ## _flag, Args)
 
 
 /*----------------------.
@@ -219,6 +235,9 @@ static const char * const warnings_args[] =
   "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",
   0
@@ -229,6 +248,9 @@ static const int warnings_types[] =
   warnings_none,
   warnings_midrule_values,
   warnings_yacc,
+  warnings_conflicts_sr,
+  warnings_conflicts_rr,
+  warnings_other,
   warnings_all,
   warnings_error
 };
@@ -257,8 +279,9 @@ usage (int status)
 
       printf (_("Usage: %s [OPTION]... FILE\n"), program_name);
       fputs (_("\
-Generate a deterministic or GLR parser employing LALR(1), IELR(1), or\n\
-canonical LR(1) parser tables.\n\
+Generate a deterministic LR or generalized LR (GLR) parser employing\n\
+LALR(1), IELR(1), or canonical LR(1) parser tables.  IELR(1) and\n\
+canonical LR(1) support is experimental.\n\
 \n\
 "), stdout);
 
@@ -317,6 +340,9 @@ Output:\n\
 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\
@@ -536,7 +562,7 @@ getargs (int argc, char *argv[])
       case 'F': /* -FNAME[=VALUE]. */
         {
           char* name = optarg;
-          char* value = strchr (optarg, '=');
+          char* value = mbschr (optarg, '=');
           if (value)
             *value++ = 0;
           muscle_percent_define_insert (name, command_line_location (),
@@ -569,10 +595,7 @@ getargs (int argc, char *argv[])
        exit (EXIT_SUCCESS);
 
       case 'W':
-       if (optarg)
-         FLAGS_ARGMATCH (warnings, optarg);
-       else
-         warnings_flag |= warnings_all;
+       FLAGS_ARGMATCH (warnings, optarg);
        break;
 
       case 'b':