X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSafe%2FIsa.pm;h=2f4f35797401bac5e26955b8eae8564e4d168f6b;hb=29153068c976a3dacb2d9440a2ab1f5286a299d1;hp=bb0b221c97df46de61a564b51c3594ca8aca5405;hpb=4f598773ef5ca977560c39af7cbf8e7bf590cc77;p=p5sagit%2FSafe-Isa.git

diff --git a/lib/Safe/Isa.pm b/lib/Safe/Isa.pm
index bb0b221..2f4f357 100644
--- a/lib/Safe/Isa.pm
+++ b/lib/Safe/Isa.pm
@@ -2,16 +2,20 @@ package Safe::Isa;
 
 use strict;
 use warnings FATAL => 'all';
-use Scalar::Util qw(blessed);
-use base qw(Exporter);
+use Scalar::Util ();
+use Exporter 5.57 qw(import);
 
-our $VERSION = '1.000003';
+our $VERSION = '1.000006';
 
 our @EXPORT = qw($_call_if_object $_isa $_can $_does $_DOES);
 
 our $_call_if_object = sub {
   my ($obj, $method) = (shift, shift);
-  return unless blessed($obj);
+  # This is intentionally a truth test, not a defined test, otherwise
+  # we gratuitously break modules like Scalar::Defer, which would be
+  # un-perlish.
+  return unless Scalar::Util::blessed($obj);
+  return $obj->isa(@_) if lc($method) eq 'does' and not $obj->can($method);
   return $obj->$method(@_);
 };
 
@@ -20,6 +24,11 @@ our ($_isa, $_can, $_does, $_DOES) = map {
   sub { my $obj = shift; $obj->$_call_if_object($method => @_) }
 } qw(isa can does DOES);
 
+1;
+__END__
+
+=pod
+
 =head1 NAME
 
 Safe::Isa - Call isa, can, does and DOES safely on things that may not be objects
@@ -106,7 +115,7 @@ is equivalent to
 Note that we don't handle trying class names, because many things are valid
 class names that you might not want to treat as one (like say "Matt") - the
 C<is_module_name> function from L<Module::Runtime> is a good way to check for
-somthing you might be able to call methods on if you want to do that.
+something you might be able to call methods on if you want to do that.
 
 =head1 EXPORTS
 
@@ -145,6 +154,11 @@ returns nothing.
 If called on an object, calls C<method_name> on it and returns the result,
 otherwise returns nothing.
 
+=head1 SEE ALSO
+
+I gave a lightning talk on this module (and L<curry> and L<Import::Into>) at
+L<YAPC::NA 2013|https://www.youtube.com/watch?v=wFXWV2yY7gE&t=46m05s>.
+
 =head1 AUTHOR
 
 mst - Matt S. Trout (cpan:MSTROUT) <mst@shadowcat.co.uk>