X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMooseX%2FRole%2FParameterized.pm;h=20fa44cf513629c0d69ed355d5657abec2d098de;hb=82b8405cff525a6fb9624914d5eaf9b60aeee755;hp=bfdb308bdd8645b7b9d1e7bddf7984872f755190;hpb=767906abbe45248aecc941ae0d7f4c97b4cd05e7;p=gitmo%2FMooseX-Role-Parameterized.git

diff --git a/lib/MooseX/Role/Parameterized.pm b/lib/MooseX/Role/Parameterized.pm
index bfdb308..20fa44c 100644
--- a/lib/MooseX/Role/Parameterized.pm
+++ b/lib/MooseX/Role/Parameterized.pm
@@ -21,7 +21,11 @@ __PACKAGE__->setup_import_methods(
 
 sub parameter {
     my $caller = shift;
-    my $meta   = Class::MOP::Class->initialize($caller);
+
+    confess "'parameter' may not be used inside of the role block"
+        if $CURRENT_METACLASS;
+
+    my $meta   = Class::MOP::class_of($caller);
 
     my $names = shift;
     $names = [$names] if !ref($names);
@@ -31,10 +35,10 @@ sub parameter {
     }
 }
 
-sub role {
+sub role (&) {
     my $caller         = shift;
     my $role_generator = shift;
-    Class::MOP::Class->initialize($caller)->role_generator($role_generator);
+    Class::MOP::class_of($caller)->role_generator($role_generator);
 }
 
 sub init_meta {
@@ -45,21 +49,9 @@ sub init_meta {
     );
 }
 
-# give role a (&) prototype
-moose_around _make_wrapper => sub {
-    my $orig = shift;
-    my ($self, $caller, $sub, $fq_name) = @_;
-
-    if ($fq_name =~ /::role$/) {
-        return sub (&) { $sub->($caller, @_) };
-    }
-
-    return $orig->(@_);
-};
-
 sub has {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my $names = shift;
     $names = [$names] if !ref($names);
@@ -71,7 +63,7 @@ sub has {
 
 sub method {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my $name   = shift;
     my $body   = shift;
@@ -87,7 +79,7 @@ sub method {
 
 sub before {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my $code = pop @_;
 
@@ -102,7 +94,7 @@ sub before {
 
 sub after {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my $code = pop @_;
 
@@ -117,7 +109,7 @@ sub after {
 
 sub around {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my $code = pop @_;
 
@@ -132,14 +124,14 @@ sub around {
 
 sub with {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     Moose::Util::apply_all_roles($meta, @_);
 }
 
 sub requires {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     Carp::croak "Must specify at least one method" unless @_;
     $meta->add_required_methods(@_);
@@ -147,7 +139,7 @@ sub requires {
 
 sub excludes {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     Carp::croak "Must specify at least one role" unless @_;
     $meta->add_excluded_roles(@_);
@@ -161,7 +153,7 @@ sub super {
 
 sub override {
     my $caller = shift;
-    my $meta   = $CURRENT_METACLASS || Class::MOP::Class->initialize($caller);
+    my $meta   = $CURRENT_METACLASS || Class::MOP::class_of($caller);
 
     my ($name, $code) = @_;
     $meta->add_override_method_modifier($name, $code);
@@ -187,7 +179,6 @@ MooseX::Role::Parameterized - parameterized roles
     use MooseX::Role::Parameterized;
 
     parameter name => (
-        is       => 'ro',
         isa      => 'Str',
         required => 1,
     );
@@ -226,24 +217,39 @@ L<MooseX::Role::Parameterized::Tutorial>.
 
 =head1 DESCRIPTION
 
-Your parameterized role consists of two things: parameter declarations and a
-C<role> block.
+Your parameterized role consists of two new things: parameter declarations
+and a C<role> block.
 
 Parameters are declared using the L</parameter> keyword which very much
-resembles L<Moose/has>. You can use any option that L<Moose/has> accepts.
-These parameters will get their values when the consuming class (or role) uses
+resembles L<Moose/has>. You can use any option that L<Moose/has> accepts. The
+default value for the C<is> option is C<ro> as that's a very common case. These
+parameters will get their values when the consuming class (or role) uses
 L<Moose/with>. A parameter object will be constructed with these values, and
 passed to the C<role> block.
 
 The C<role> block then uses the usual L<Moose::Role> keywords to build up a
 role. You can shift off the parameter object to inspect what the consuming
-class provided as parameters. You can use the parameters to make your role
-customizable!
+class provided as parameters. You use the parameters to customize your
+role however you wish.
 
-There are many paths to parameterized roles (hopefully with a consistent enough
-API); I believe this to be the easiest and most flexible implementation.
-Coincidentally, Pugs has a very similar design (I'm not yet convinced that that
-is a good thing).
+There are many possible implementations for parameterized roles (hopefully with
+a consistent enough API); I believe this to be the easiest and most flexible
+design. Coincidentally, Pugs originally had an eerily similar design.
+
+=head2 Why a parameters object?
+
+I've been asked several times "Why use a parameter I<object> and not just a
+parameter I<hashref>? That would eliminate the need to explicitly declare your
+parameters."
+
+The benefits of using an object are similar to the benefits of using Moose. You
+get an easy way to specify lazy defaults, type constraint, delegation, and so
+on. You get to use MooseX modules.
+
+You also get the usual introspective and intercessory abilities that come
+standard with the metaobject protocol. Ambitious users should be able to add
+traits to the parameters metaclass to further customize behavior. Please let
+me know if you're doing anything viciously complicated with this extension. :)
 
 =head1 CAVEATS
 
@@ -253,12 +259,36 @@ return though you can use parameters I<in your methods>!
 
 L<Moose::Role/alias> and L<Moose::Role/excludes> are not yet supported. I'm
 completely unsure of whether they should be handled by this module. Until we
-figure out a plan, both declaring and providing a parameter named C<alias> or
+figure out a plan, either declaring or providing a parameter named C<alias> or
 C<excludes> is an error.
 
 =head1 AUTHOR
 
 Shawn M Moore, C<< <sartak@bestpractical.com> >>
 
+=head1 EXAMPLES
+
+=over 4
+
+=item L<MooseX::Role::Matcher>
+
+=item L<MooseX::Role::XMLRPC::Client>
+
+=item L<MooseX::RelatedClassRoles>
+
+=item L<WWW::Mechanize::TreeBuilder>
+
+=item L<TAEB::Action::Role::Item>
+
+=item L<KiokuDB::Role::Scan>
+
+=item L<Fey::Role::MakesAliasObjects>
+
+=item L<Fey::Role::HasAliasName>
+
+=item L<Fey::Role::SetOperation>
+
+=back
+
 =cut