Fix an issue that breaks a backward compatibility.

[gitmo/Mouse.git] / lib / Mouse / Util.pm

diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm
index 01a9efc..e86da70 100644 (file)
--- a/lib/Mouse/Util.pm
+++ b/lib/Mouse/Util.pm
@@ -1,11 +1,14 @@
 package Mouse::Util;
 use strict;
 use warnings;
-use base qw/Exporter/;
+
+use Exporter;
 
 use Carp qw(confess);
-use B ();
 
+use constant _MOUSE_VERBOSE => !!$ENV{MOUSE_VERBOSE};
+
+our @ISA       = qw(Exporter);
 our @EXPORT_OK = qw(
     find_meta
     does_role
@@ -22,10 +25,11 @@ our @EXPORT_OK = qw(
     not_supported
 
     does meta dump
+    _MOUSE_VERBOSE
 );
 our %EXPORT_TAGS = (
     all  => \@EXPORT_OK,
-    meta => [qw(does meta dump)],
+    meta => [qw(does meta dump _MOUSE_VERBOSE)],
 );
 
 # Moose::Util compatible utilities
@@ -95,6 +99,8 @@ BEGIN {
         my ($coderef) = @_;
         ref($coderef) or return;
 
+        require B;
+
         my $cv = B::svref_2object($coderef);
         $cv->isa('B::CV') or return;
 
@@ -247,7 +253,7 @@ sub apply_all_roles {
         if ($i + 1 < $max && ref($_[$i + 1])) {
             push @roles, [ $_[$i++] => $_[$i] ];
         } else {
-            push @roles, [ $_[$i] => {} ];
+            push @roles, [ $_[$i]   => undef ];
         }
         my $role_name = $roles[-1][0];
         load_class($role_name);
@@ -331,9 +337,17 @@ Mouse::Util - features, with or without their dependencies
 
 =head2 Class::MOP
 
-=head3 C<is_class_loaded>
+=head2 C<< is_class_loaded(ClassName) -> Bool >>
+
+Returns whether C<ClassName> is actually loaded or not. It uses a heuristic which
+involves checking for the existence of C<$VERSION>, C<@ISA>, and any
+locally-defined method.
+
+=head3 C<< load_class(ClassName) >>
 
-=head3 C<load_class>
+This will load a given C<ClassName> (or die if it's not loadable).
+This function can be used in place of tricks like
+C<eval "use $module"> or using C<require>.
 
 =head2 MRO::Compat
 
@@ -353,5 +367,15 @@ C<not_supported>
 
 =back
 
+=head1 SEE ALSO
+
+L<Moose::Util>
+
+L<Scalar::Util>
+
+L<Sub::Identify>
+
+L<MRO::Compat>
+
 =cut