X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse%2FRole.pm;h=36017affd342a0d2998af873a1e537a5d04b8b70;hb=fd2b172a4657cb6cc47976d2e66cdba4bdfa579d;hp=dfa08d98d579ed7581dd82ad599b57932a0fe2ea;hpb=59afef985b4a8c91e505715d75457b35656e4013;p=gitmo%2FMouse.git

diff --git a/lib/Mouse/Role.pm b/lib/Mouse/Role.pm
index dfa08d9..36017af 100644
--- a/lib/Mouse/Role.pm
+++ b/lib/Mouse/Role.pm
@@ -1,7 +1,7 @@
 package Mouse::Role;
 use Mouse::Exporter; # enables strict and warnings
 
-our $VERSION = '0.84';
+our $VERSION = '0.87';
 
 use Carp         qw(confess);
 use Scalar::Util qw(blessed);
@@ -137,7 +137,7 @@ Mouse::Role - The Mouse Role
 
 =head1 VERSION
 
-This document describes Mouse version 0.84
+This document describes Mouse version 0.87
 
 =head1 SYNOPSIS
 
@@ -166,66 +166,76 @@ This document describes Mouse version 0.84
     my $bar = MyObject->new();
     $obj->equals($bar); # yes, it is comparable
 
-=head1 KEYWORDS
+=head1 DESCRIPTION
 
-=head2 C<< meta -> Mouse::Meta::Role >>
+This module declares the caller class to be a Mouse role.
 
-Returns this role's metaclass instance.
+The concept of roles is documented in L<Moose::Manual::Roles>.
+This document serves as API documentation.
 
-=head2 C<< before (method|methods|regexp) -> CodeRef >>
+=head1 EXPORTED FUNCTIONS
 
-Sets up a B<before> method modifier. See L<Moose/before>.
+Mouse::Role supports all of the functions that Mouse exports, but
+differs slightly in how some items are handled (see L</CAVEATS> below
+for details).
 
-=head2 C<< after (method|methods|regexp) => CodeRef >>
+Mouse::Role also offers two role-specific keywords:
 
-Sets up an B<after> method modifier. See L<Moose/after>.
+=head2 C<< requires(@method_names) >>
 
-=head2 C<< around (method|methods|regexp) => CodeRef >>
+Roles can require that certain methods are implemented by any class which
+C<does> the role.
 
-Sets up an B<around> method modifier. See L<Moose/around>.
+Note that attribute accessors also count as methods for the purposes of
+satisfying the requirements of a role.
 
-=head2 C<super>
+=head2 C<< excludes(@role_names) >>
 
-Sets up the B<super> keyword. See L<Moose/super>.
+This is exported but not implemented in Mouse.
 
-=head2  C<< override method => CodeRef >>
+=head1 IMPORT AND UNIMPORT
 
-Sets up an B<override> method modifier. See L<Moose/Role/override>.
-
-=head2 C<inner>
-
-This is not supported in roles and emits an error. See L<Moose/Role>.
-
-=head2 C<< augment method => CodeRef >>
+=head2 import
 
-This is not supported in roles and emits an error. See L<Moose/Role>.
+Importing Mouse::Role will give you sugar. C<-traits> are also supported.
 
-=head2 C<< has (name|names) => parameters >>
+=head2 unimport
 
-Sets up an attribute (or if passed an arrayref of names, multiple attributes) to
-this role. See L<Mouse/has>.
+Please unimport (C<< no Mouse::Role >>) so that if someone calls one of the
+keywords (such as L</has>) it will break loudly instead breaking subtly.
 
-=head2 C<< confess(error) -> BOOM >>
+=head1 CAVEATS
 
-L<Carp/confess> for your convenience.
+Role support has only a few caveats:
 
-=head2 C<< blessed(value) -> ClassName | undef >>
+=over
 
-L<Scalar::Util/blessed> for your convenience.
+=item *
 
-=head1 MISC
+Roles cannot use the C<extends> keyword; it will throw an exception for now.
+The same is true of the C<augment> and C<inner> keywords (not sure those
+really make sense for roles). All other Mouse keywords will be I<deferred>
+so that they can be applied to the consuming class.
 
-=head2 import
+=item *
 
-Importing Mouse::Role will give you sugar.
+Role composition does its best to B<not> be order-sensitive when it comes to
+conflict resolution and requirements detection. However, it is order-sensitive
+when it comes to method modifiers. All before/around/after modifiers are
+included whenever a role is composed into a class, and then applied in the order
+in which the roles are used. This also means that there is no conflict for
+before/around/after modifiers.
 
-=head2 unimport
+In most cases, this will be a non-issue; however, it is something to keep in
+mind when using method modifiers in a role. You should never assume any
+ordering.
 
-Please unimport (C<< no Mouse::Role >>) so that if someone calls one of the
-keywords (such as L</has>) it will break loudly instead breaking subtly.
+=back
 
 =head1 SEE ALSO
 
+L<Mouse>
+
 L<Moose::Role>
 
 =cut