final touches for lexical warnings (from Paul Marquess)

p4raw-id: //depot/perl@5702

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/warnings/register.pm b/lib/warnings/register.pm
new file mode 100644
index 0000000000..da6be97952
--- /dev/null
+++ b/lib/warnings/register.pm
@@ -0,0 +1,30 @@
+package warnings::register ;
+
+require warnings ;
+
+sub mkMask
+{
+    my ($bit) = @_ ;
+    my $mask = "" ;
+
+    vec($mask, $bit, 1) = 1 ;
+    return $mask ;
+}
+
+sub import
+{
+    shift ;
+    my $package = (caller(0))[0] ;
+    if (! defined $warnings::Bits{$package}) {
+        $warnings::Bits{$package}     = mkMask($warnings::LAST_BIT) ;
+        vec($warnings::Bits{'all'}, $warnings::LAST_BIT, 1) = 1 ;
+        $warnings::Offsets{$package}  = $warnings::LAST_BIT ++ ;
+	foreach my $k (keys %warnings::Bits) {
+	    vec($warnings::Bits{$k}, $warnings::LAST_BIT, 1) = 0 ;
+	}
+        $warnings::DeadBits{$package} = mkMask($warnings::LAST_BIT);
+        vec($warnings::DeadBits{'all'}, $warnings::LAST_BIT++, 1) = 1 ;
+    }
+}
+
+1 ;