Prepare CPAN release of Attribute::Handlers

[p5sagit/p5-mst-13.2.git] / lib / base.pm

diff --git a/lib/base.pm b/lib/base.pm
index 3cb42f5..37f220f 100644 (file)
--- a/lib/base.pm
+++ b/lib/base.pm
@@ -30,7 +30,7 @@ C<require>s them.  Whether to C<require> a base class package is
 determined by the absence of a global $VERSION in the base package.
 If $VERSION is not detected even after loading it, <base> will
 define $VERSION in the base package, setting it to the string
-C<-1, defined by base.pm>.
+C<-1, set by base.pm>.
 
 =head1 HISTORY
 
@@ -44,8 +44,8 @@ L<fields>
 
 package base;
 
-use 5.005_64;
-our $VERSION = "1.01";
+use 5.006_001;
+our $VERSION = "1.03";
 
 sub import {
     my $class = shift;
@@ -54,8 +54,10 @@ sub import {
 
     foreach my $base (@_) {
        next if $pkg->isa($base);
-       push @{"$pkg\::ISA"}, $base;
-       unless (exists ${"$base\::"}{VERSION}) {
+        my $vglob;
+       if ($vglob = ${"$base\::"}{VERSION} and *$vglob{SCALAR}) {
+          $$vglob = "-1, set by base.pm" unless defined $$vglob;
+        } else {
            eval "require $base";
            # Only ignore "Can't locate" errors from our eval require.
            # Other fatal errors (syntax etc) must be reported.
@@ -66,9 +68,9 @@ sub import {
                            "\t(Perhaps you need to 'use' the module ",
                            "which defines that package first.)");
            }
-           ${"$base\::VERSION"} = "-1, set by base.pm"
-               unless exists ${"$base\::"}{VERSION};
+           ${"$base\::VERSION"} = "-1, set by base.pm" unless defined ${"$base\::VERSION"};
        }
+       push @{"$pkg\::ISA"}, $base;
 
        # A simple test like (defined %{"$base\::FIELDS"}) will
        # sometimes produce typo warnings because it would create