Update version and release date

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

diff --git a/lib/MooseX/Singleton.pm b/lib/MooseX/Singleton.pm
index 38f22ec..bf7168d 100644 (file)
--- a/lib/MooseX/Singleton.pm
+++ b/lib/MooseX/Singleton.pm
@@ -1,28 +1,109 @@
 package MooseX::Singleton;
+use Moose;
+use MooseX::Singleton::Object;
+use MooseX::Singleton::Meta::Class;
 
-use Moose::Role;
+our $VERSION = 0.08;
 
-our $VERSION = 0.01;
+sub import {
+    my $caller = caller;
 
-override new => sub {
-  my ($class) = @_;
+    Moose::init_meta($caller, 'MooseX::Singleton::Object', 'MooseX::Singleton::Meta::Class');
 
-  no strict qw/refs/;
+    Moose->import({into => $caller});
+    strict->import;
+    warnings->import;
+}
 
-  my $instance = super;
+no Moose;
 
-  ${"$class\::singleton"} = $instance;
+1;
 
-  return $instance;
-};
+__END__
 
-sub instance {
-  my ($class) = @_;
+=pod
 
-  no strict qw/refs/;
+=head1 NAME
 
-  return ${"$class\::singleton"};
-}
+MooseX::Singleton - turn your Moose class into a singleton
 
-1;
+=head1 VERSION
+
+Version 0.08, released 24 May 08
+
+=head1 SYNOPSIS
+
+    package MyApp;
+    use MooseX::Singleton;
+
+    has env => (
+        is      => 'rw',
+        isa     => 'HashRef[Str]',
+        default => sub { \%ENV },
+    );
+
+    package main;
+
+    delete MyApp->env->{PATH};
+    my $instance = MyApp->instance;
+    my $same = MyApp->instance;
+
+=head1 DESCRIPTION
+
+A singleton is a class that has only one instance in an application.
+C<MooseX::Singleton> lets you easily upgrade (or downgrade, as it were) your
+L<Moose> class to a singleton.
+
+All you should need to do to transform your class is to change C<use Moose> to
+C<use MooseX::Singleton>. This module uses a new class metaclass and instance
+metaclass, so if you're doing metamagic you may not be able to use this.
+
+C<MooseX::Singleton> gives your class an C<instance> method that can be used to get a handle on the singleton. It's actually just an alias for C<new>.
+
+Alternatively, C<< YourPackage->method >> should just work. This includes
+accessors.
+
+=head1 TODO
+
+=over
+
+=item Always more tests and doc
+
+=item Fix speed boost
+
+C<instance> invokes C<new> every time C<< Package->method >> is called, which
+incurs a nontrivial runtime cost. I've implemented a short-circuit for this
+case, which does eliminate nearly all of the runtime cost. However, it's ugly
+and should be fixed in a more elegant way.
+
+=back
+
+=head1 BUGS
+
+All complex software has bugs lurking in it, and this module is no 
+exception. If you find a bug please either email me, or add the bug
+to cpan-RT.
+
+=head1 AUTHOR
+
+Shawn M Moore E<lt>sartak@gmail.comE<gt>
+
+=head1 SOME CODE STOLEN FROM
+
+Anders Nor Berle E<lt>debolaz@gmail.comE<gt>
+
+=head1 AND PATCHES FROM
+
+Ricardo SIGNES E<lt>rjbs@cpan.orgE<gt>
+
+Dave Rolsky E<lt>autarch@urth.orgE<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright 2007, 2008 Shawn M Moore.
+
+This program is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.
+
+=cut