lalr1.cc: avoid GCC 4.3 warnings.

[bison.git] / build-aux / cross-options.pl

diff --git a/build-aux/cross-options.pl b/build-aux/cross-options.pl
index 4c941b04c339978a75aa361f5875e4a62807dd00..6d153a05dbb35930f16e5cf2a5fdbfeb37a5ed9b 100755 (executable)
--- a/build-aux/cross-options.pl
+++ b/build-aux/cross-options.pl
@@ -5,28 +5,68 @@ use 5.005;
 use strict;
 
 my %option;
-while (<>)
+my %directive;
+my $scanner = `grep -i '"%[a-z]' $ARGV[0]`;
+$scanner =~ s/"\[-_\]"/-/g;
+while (<STDIN>)
 {
-    if (/^\s*(?:(-\w), )?(--[-\w]+)(\[?)(=[-\w]+)?\]?/)
+    if (/^\s*             # Initial spaces.
+        (?:(-\w),\s+)?    # $1: $short: Possible short option.
+        (--[-\w]+)        # $2: $long:  Long option.
+        (\[?)             # $3: $opt:   '[' iff the argument is optional.
+        (?:=(\S+))?       # $4: $arg:   Possible argument name.
+        \s                # Spaces.
+        /x)
     {
        my ($short, $long, $opt, $arg) = ($1, $2, $3, $4);
-       $short = defined $short ? '@option{' . $short . '}' : '';
+       $short = '' if ! defined $short;
+       $short = '-d' if $long eq '--defines' && ! $short;
+       my $dir = '%' . substr($long, 2);
+       $dir = '' if index ($scanner, "\"$dir\"") < 0;
        if ($arg)
        {
+            # if $opt, $arg contains the closing ].
+            substr ($arg, -1) = ''
+                if $opt eq '[';
            $arg =~ s/^=//;
-           $arg = '@var{' . lc ($arg) . '}';
+            $arg = lc ($arg);
+           my $dir_arg = $arg;
+            # If the argument is compite (e.g., for --define[=NAME[=VALUE]]),
+            # put each word in @var, to build @var{name}[=@var{value}], not
+            # @var{name[=value]}].
+           $arg =~ s/(\w+)/\@var{$1}/g;
            $arg = '[' . $arg . ']'
-               if defined $opt;
-           $option{"$long=$arg"} = "$short $arg";
-       }
-       else
-       {
-           $option{"$long"} = "$short";
+               if $opt eq '[';
+           # For arguments of directives: this only works if all arguments
+           # are strings and have the same syntax as on the command line.
+           if ($dir_arg eq 'name[=value]')
+           {
+               $dir_arg = '@var{name} ["@var{value}"]';
+           }
+           else
+           {
+               $dir_arg =~ s/(\w+)/\@var{"$1"}/g;
+               $dir_arg = '[' . $dir_arg . ']'
+                   if $opt eq '[';
+           }
+           $long = "$long=$arg";
+           $short = "$short $arg" if $short && $short ne '-d';
+           $dir = "$dir $dir_arg" if $dir;
        }
+       $option{$long} = $short;
+       $directive{$long} = $dir;
     }
 }
 
+my $sep = '';
 foreach my $long (sort keys %option)
 {
-    printf "\@item %-40s \@tab %s\n", '@option{' . $long . '}', $option{$long};
+    # Avoid trailing spaces.
+    print $sep;
+    $sep = "\n";
+    print '@item @option{', $long, "}\n\@tab";
+    print ' @option{', $option{$long}, '}' if $option{$long};
+    print "\n\@tab";
+    print ' @code{', $directive{$long}, '}' if $directive{$long};
+    print "\n";
 }