X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FPurePerl.pm;h=fc6b45786a4c6248e421b65c4286a98eabd630c3;hp=1f77bf0ce8fe389447b7a5f2f932636cfd2f8198;hb=ebe91068002fbe34a924a0a9e2cd79553867938c;hpb=aff73a9e6d34b45a21123586c0893921df98181b

diff --git a/lib/Mouse/PurePerl.pm b/lib/Mouse/PurePerl.pm
index 1f77bf0..fc6b457 100644
--- a/lib/Mouse/PurePerl.pm
+++ b/lib/Mouse/PurePerl.pm
@@ -97,6 +97,32 @@ sub generate_isa_predicate_for {
     return $predicate;
 }
 
+sub generate_can_predicate_for {
+    my($methods_ref, $name) = @_;
+
+    my @methods = @{$methods_ref};
+
+    my $predicate = sub{
+        my($instance) = @_;
+        if(Scalar::Util::blessed($instance)){
+            foreach my $method(@methods){
+                if(!$instance->can($method)){
+                    return 0;
+                }
+            }
+            return 1;
+        }
+        return 0;
+    };
+
+    if(defined $name){
+        no strict 'refs';
+        *{ caller() . '::' . $name } = $predicate;
+        return;
+    }
+
+    return $predicate;
+}
 
 package
     Mouse::Util::TypeConstraints;