determine prereqs automatically

[gitmo/MooseX-UndefTolerant.git] / lib / MooseX / UndefTolerant.pm

diff --git a/lib/MooseX/UndefTolerant.pm b/lib/MooseX/UndefTolerant.pm
index 76cbb5e..1d5054e 100644 (file)
--- a/lib/MooseX/UndefTolerant.pm
+++ b/lib/MooseX/UndefTolerant.pm
@@ -1,27 +1,54 @@
 package MooseX::UndefTolerant;
 
-use Moose qw();
+use strict;
+use warnings;
+
+use Moose 0.89 qw();
 use Moose::Exporter;
 
 use MooseX::UndefTolerant::Attribute;
+use MooseX::UndefTolerant::Class;
 use MooseX::UndefTolerant::Constructor;
 
-our $VERSION = '0.06';
 
-Moose::Exporter->setup_import_methods(
-    class_metaroles => { 
-           attribute => [ 'MooseX::UndefTolerant::Attribute' ],
-           constructor => [ 'MooseX::UndefTolerant::Constructor' ],
+my %metaroles = (
+    class_metaroles => {
+        attribute => [ 'MooseX::UndefTolerant::Attribute' ],
     }
 );
+if ( $Moose::VERSION < 1.9900 ) {
+    $metaroles{class_metaroles}{constructor} = [
+        'MooseX::UndefTolerant::Constructor',
+    ];
+}
+else {
+    $metaroles{class_metaroles}{class} = [
+        'MooseX::UndefTolerant::Class',
+    ];
+    $metaroles{role_metaroles} = {
+        applied_attribute => [
+            'MooseX::UndefTolerant::Attribute',
+        ],
+        role => [
+            'MooseX::UndefTolerant::Role',
+        ],
+        application_to_class => [
+            'MooseX::UndefTolerant::ApplicationToClass',
+        ],
+        application_to_role => [
+            'MooseX::UndefTolerant::ApplicationToRole',
+        ],
+    };
+}
+
+
+Moose::Exporter->setup_import_methods(%metaroles);
 
 1;
 
-__END__
-
-=head1 NAME
+# ABSTRACT: Make your attribute(s) tolerant to undef initialization
 
-MooseX::UndefTolerant - Make your attribute(s) tolerant to undef initialization
+__END__
 
 =head1 SYNOPSIS
 
@@ -60,9 +87,20 @@ Or, if you only want one attribute to have this behaviour:
 
 Loading this module in your L<Moose> class makes initialization of your
 attributes tolerant of undef.  If you specify the value of undef to any of
-the attributes they will not be initialized.  Effectively behaving as if you
+the attributes they will not be initialized, effectively behaving as if you
 had not provided a value at all.
 
+You can also apply the 'UndefTolerant' trait to individual attributes. See
+L<MooseX::UndefTolerant::Attribute> for details.
+
+There will be no change in behaviour to any attribute with a type constraint
+that accepts undef values (for example C<Maybe> types), as it is presumed that
+since the type is already "undef tolerant", there is no need to avoid
+initializing the attribute value with C<undef>.
+
+As of Moose 1.9900, this module can also be used in a role, in which case all
+of that role's attributes will be undef-tolerant.
+
 =head1 MOTIVATION
 
 I often found myself in this quandry:
@@ -91,17 +129,21 @@ real solution was:
     $class = My:Class->new(bar => 123);
   }
 
-Or some type of codemulch using ternarys.  This module allows you to make
-your attributes more tolerant of undef so that you can keep the first
+Or some type of codemulch using ternary conditionals.  This module allows you
+to make your attributes more tolerant of undef so that you can keep the first
 example: have your cake and eat it too!
 
 =head1 PER ATTRIBUTE
 
 See L<MooseX::UndefTolerant::Attribute>.
 
-=head1 AUTHOR
+=head1 CAVEATS
 
-Cory G Watson, C<< <gphat at cpan.org> >>
+This extension does not currently work in immutable classes when applying the
+trait to some (but not all) attributes in the class. This is because the
+inlined constructor initialization code currently lives in
+L<Moose::Meta::Class>, not L<Moose::Meta::Attribute>. The good news is that
+this is expected to be changing shortly.
 
 =head1 ACKNOWLEDGEMENTS
 
@@ -119,14 +161,4 @@ Jay Shirley (jshirley)
 
 Mike Eldridge (diz)
 
-=head1 COPYRIGHT & LICENSE
-
-Copyright 2009 Cory G Watson.
-
-This program is free software; you can redistribute it and/or modify it
-under the terms of either: the GNU General Public License as published
-by the Free Software Foundation; or the Artistic License.
-
-See http://dev.perl.org/licenses/ for more information.
-
 =cut