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
my $fields_base;
my $pkg = caller(0);
- my @attrs;
- my $isa = \@{"$pkg\::ISA"};
-
foreach my $base (@_) {
- if ($base =~ /^[-+]/) { #attribute
- push @attrs, $base;
- next;
- }
next if $pkg->isa($base);
- push @$isa, $base;
- unless (exists ${"$base\::"}{VERSION}) {
+ push @{"$pkg\::ISA"}, $base;
+ my $vglob;
+ unless (${*{"$base\::VERSION"}{SCALAR}}) {
eval "require $base";
# Only ignore "Can't locate" errors from our eval require.
# Other fatal errors (syntax etc) must be reported.
- die if $@ && $@ !~ /^Can\'t locate .*? at \(eval /;
+ die if $@ && $@ !~ /^Can't locate .*? at \(eval /;
unless (%{"$base\::"}) {
require Carp;
Carp::croak("Base class package \"$base\" is empty.\n",
"which defines that package first.)");
}
${"$base\::VERSION"} = "-1, set by base.pm"
- unless exists ${"$base\::"}{VERSION};
+ unless ${*{"$base\::VERSION"}{SCALAR}};
}
# A simple test like (defined %{"$base\::FIELDS"}) will
require fields;
fields::inherit($pkg, $fields_base);
}
- if (@attrs) {
- require attributes;
- attributes::->import($pkg, $isa, @attrs);
- }
}
1;