X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse%2FPurePerl.pm;h=6ab689bc81767b3401949417631443bd0dc21e3f;hb=refs%2Ftags%2F0.50_03;hp=a09d60609d180c0f6a172ae92b86447578e41b3f;hpb=6fffa61704e072b2248126490db2851343413d11;p=gitmo%2FMouse.git

diff --git a/lib/Mouse/PurePerl.pm b/lib/Mouse/PurePerl.pm
index a09d606..6ab689b 100644
--- a/lib/Mouse/PurePerl.pm
+++ b/lib/Mouse/PurePerl.pm
@@ -447,12 +447,23 @@ sub _process_options{
 
     my $tc;
     if(exists $args->{isa}){
-        $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa});
+        $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_isa_type_constraint($args->{isa});
     }
-    elsif(exists $args->{does}){
-        $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does});
+
+    if(exists $args->{does}){
+        if(defined $tc){ # both isa and does supplied
+            my $does_ok = do{
+                local $@;
+                eval{ "$tc"->does($args) };
+            };
+            if(!$does_ok){
+                $class->throw_error("Cannot have both an isa option and a does option because '$tc' does not do '$args->{does}' on attribute ($name)");
+            }
+        }
+        else {
+            $tc = $args->{type_constraint} = Mouse::Util::TypeConstraints::find_or_create_does_type_constraint($args->{does});
+        }
     }
-    $tc = $args->{type_constraint};
 
     if($args->{coerce}){
         defined($tc)
@@ -661,7 +672,7 @@ Mouse::PurePerl - A Mouse guts in pure Perl
 
 =head1 VERSION
 
-This document describes Mouse version 0.50_02
+This document describes Mouse version 0.50_03
 
 =head1 SEE ALSO