lib/perl5/5.6.1/warnings/register.pm

   1 package warnings::register ;
   2
   3 =pod
   4
   5 =head1 NAME
   6
   7 warnings::register - warnings import function
   8
   9 =cut
  10
  11 require warnings ;
  12
  13 sub mkMask
  14 {
  15     my ($bit) = @_ ;
  16     my $mask = "" ;
  17
  18     vec($mask, $bit, 1) = 1 ;
  19     return $mask ;
  20 }
  21
  22 sub import
  23 {
  24     shift ;
  25     my $package = (caller(0))[0] ;
  26     if (! defined $warnings::Bits{$package}) {
  27         $warnings::Bits{$package}     = mkMask($warnings::LAST_BIT) ;
  28         vec($warnings::Bits{'all'}, $warnings::LAST_BIT, 1) = 1 ;
  29         $warnings::Offsets{$package}  = $warnings::LAST_BIT ++ ;
  30         foreach my $k (keys %warnings::Bits) {
  31             vec($warnings::Bits{$k}, $warnings::LAST_BIT, 1) = 0 ;
  32         }
  33         $warnings::DeadBits{$package} = mkMask($warnings::LAST_BIT);
  34         vec($warnings::DeadBits{'all'}, $warnings::LAST_BIT++, 1) = 1 ;
  35     }
  36 }
  37
  38 1 ;