use Sub::Name 'subname';
use B 'svref_2object';
-use UNIVERSAL::require;
use Sub::Exporter;
use Class::MOP;
$class->meta->add_augment_method_modifier($name => $method);
};
},
+
+ # NOTE:
+ # this is experimental for now ...
+ self => sub {
+ return subname 'Moose::self' => sub {};
+ },
+ method => sub {
+ my $class = $CALLER;
+ return subname 'Moose::method' => sub {
+ my ($name, $method) = @_;
+ $class->meta->add_method($name, sub {
+ my $self = shift;
+ no strict 'refs';
+ no warnings 'redefine';
+ local *{$class->meta->name . '::self'} = sub { $self };
+ $method->(@_);
+ });
+ };
+ },
+
confess => sub {
return \&Carp::confess;
},
my $class = caller();
# loop through the exports ...
foreach my $name (keys %exports) {
+ next if $name =~ /inner|super|self/;
# if we find one ...
if (defined &{$class . '::' . $name}) {
# loaded in the symbol table
next if _is_class_already_loaded($super);
# otherwise require it ...
- ($super->require)
- || confess "Could not load module '$super' because : " . $UNIVERSAL::require::ERROR;
- }
+ # NOTE:
+ # just in case the class we are
+ # loading has a locally defined
+ # &require, we make sure that we
+ # use the on in UNIVERSAL
+ my $file = $class . '.pm';
+ $file =~ s{::}{/}g;
+ eval { CORE::require($file) };
+ confess(
+ "Could not load module '$super' because : $@"
+ ) if $@;
+ }
}
sub _is_class_already_loaded {
next if substr($_, -2, 2) eq '::';
return 1 if defined &{"${name}::$_"};
}
- return 0;
+ return 0;
}
1;
=head2 Another object system!?!?
Yes, I know there has been an explosion recently of new ways to
-build object's in Perl 5, most of them based on inside-out objects,
+build object's in Perl 5, most of them based on inside-out objects
and other such things. Moose is different because it is not a new
object system for Perl 5, but instead an extension of the existing
object system.
=head2 Can I use this in production? Or is this just an experiment?
Moose is I<based> on the prototypes and experiments I did for the Perl 6
-meta-model, however Moose is B<NOT> an experiment/prototype, it is
+meta-model; however Moose is B<NOT> an experiment/prototype, it is
for B<real>. I will be deploying Moose into production environments later
-this year, and I have all intentions of using it as my de-facto class
-builderfrom now on.
+this year, and I have every intentions of using it as my de facto class
+builder from now on.
=head2 Is Moose just Perl 6 in Perl 5?
-No. While Moose is very much inspired by Perl 6, it is not. Instead, it
-is an OO system for Perl 5. I built Moose because I was tired or writing
-the same old boring Perl 5 OO code, and drooling over Perl 6 OO. So
-instead of switching to Ruby, I wrote Moose :)
+No. While Moose is very much inspired by Perl 6, it is not itself Perl 6.
+Instead, it is an OO system for Perl 5. I built Moose because I was tired or
+writing the same old boring Perl 5 OO code, and drooling over Perl 6 OO. So
+instead of switching to Ruby, I wrote Moose :)
=head1 BUILDING CLASSES WITH MOOSE
-Moose makes every attempt to provide as much convience during class
-construction/definition, but still stay out of your way if you want
-it to. Here are a few items to note when building classes with Moose.
+Moose makes every attempt to provide as much convenience as possible during
+class construction/definition, but still stay out of your way if you want it
+to. Here are a few items to note when building classes with Moose.
Unless specified with C<extends>, any class which uses Moose will
inherit from L<Moose::Object>.
Moose will also manage all attributes (including inherited ones) that
-are defined with C<has>. And assuming that you call C<new> which is
+are defined with C<has>. And assuming that you call C<new>, which is
inherited from L<Moose::Object>, then this includes properly initializing
-all instance slots, setting defaults where approprtiate and performing any
+all instance slots, setting defaults where appropriate, and performing any
type constraint checking or coercion.
=head1 EXPORTED FUNCTIONS
-Moose will export a number of functions into the class's namespace, which
+Moose will export a number of functions into the class's namespace which
can then be used to set up the class. These functions all work directly
on the current class.
This approach is recommended instead of C<use base>, because C<use base>
actually C<push>es onto the class's C<@ISA>, whereas C<extends> will
replace it. This is important to ensure that classes which do not have
-superclasses properly inherit from L<Moose::Object>.
+superclasses still properly inherit from L<Moose::Object>.
=item B<with (@roles)>
This will apply a given set of C<@roles> to the local class. Role support
-is currently under heavy development, see L<Moose::Role> for more details.
+is currently under heavy development; see L<Moose::Role> for more details.
=item B<has ($name, %options)>
The I<isa> option uses Moose's type constraint facilities to set up runtime
type checking for this attribute. Moose will perform the checks during class
construction, and within any accessors. The C<$type_name> argument must be a
-string. The string can be either a class name, or a type defined using
-Moose's type defintion features.
+string. The string can be either a class name or a type defined using
+Moose's type definition features.
=item I<coerce =E<gt> (1|0)>
This will attempt to use coercion with the supplied type constraint to change
-the value passed into any accessors of constructors. You B<must> have supplied
+the value passed into any accessors or constructors. You B<must> have supplied
a type constraint in order for this to work. See L<Moose::Cookbook::Recipe5>
for an example usage.
=item I<weak_ref =E<gt> (1|0)>
-This will tell the class to strore the value of this attribute as a weakened
-reference. If an attribute is a weakened reference, it can B<not> also be coerced.
+This will tell the class to store the value of this attribute as a weakened
+reference. If an attribute is a weakened reference, it B<cannot> also be
+coerced.
=item I<lazy =E<gt> (1|0)>
-This will tell the class to not create this slot until absolutely nessecary.
+This will tell the class to not create this slot until absolutely necessary.
If an attribute is marked as lazy it B<must> have a default supplied.
=item I<auto_deref =E<gt> (1|0)>
-This tells the accessor whether to automatically de-reference the value returned.
+This tells the accessor whether to automatically dereference the value returned.
This is only legal if your C<isa> option is either an C<ArrayRef> or C<HashRef>.
=item I<trigger =E<gt> $code>
The trigger option is a CODE reference which will be called after the value of
the attribute is set. The CODE ref will be passed the instance itself, the
updated value and the attribute meta-object (this is for more advanced fiddling
-and can typically be ignored in most cases). You can B<not> have a trigger on
+and can typically be ignored in most cases). You B<cannot> have a trigger on
a read-only attribute.
=item I<handles =E<gt> [ @handles ]>
=item B<around $name|@names =E<gt> sub { ... }>
-This three items are syntactic sugar for the before, after and around method
+This three items are syntactic sugar for the before, after, and around method
modifier features that L<Class::MOP> provides. More information on these can
be found in the L<Class::MOP> documentation for now.
=item B<super>
-The keyword C<super> is a noop when called outside of an C<override> method. In
+The keyword C<super> is a no-op when called outside of an C<override> method. In
the context of an C<override> method, it will call the next most appropriate
superclass method with the same arguments as the original method.
=item B<override ($name, &sub)>
-An C<override> method, is a way of explictly saying "I am overriding this
+An C<override> method is a way of explicitly saying "I am overriding this
method from my superclass". You can call C<super> within this method, and
it will work as expected. The same thing I<can> be accomplished with a normal
-method call and the C<SUPER::> pseudo-package, it is really your choice.
+method call and the C<SUPER::> pseudo-package; it is really your choice.
=item B<inner>
The keyword C<inner>, much like C<super>, is a no-op outside of the context of
an C<augment> method. You can think of C<inner> as being the inverse of
-C<super>, the details of how C<inner> and C<augment> work is best described in
+C<super>; the details of how C<inner> and C<augment> work is best described in
the L<Moose::Cookbook>.
=item B<augment ($name, &sub)>
-An C<augment> method, is a way of explictly saying "I am augmenting this
+An C<augment> method, is a way of explicitly saying "I am augmenting this
method from my superclass". Once again, the details of how C<inner> and
C<augment> work is best described in the L<Moose::Cookbook>.
=item B<confess>
-This is the C<Carp::confess> function, and exported here beause I use it
+This is the C<Carp::confess> function, and exported here because I use it
all the time. This feature may change in the future, so you have been warned.
=item B<blessed>
-This is the C<Scalar::Uti::blessed> function, it is exported here beause I
+This is the C<Scalar::Uti::blessed> function, it is exported here because I
use it all the time. It is highly recommended that this is used instead of
C<ref> anywhere you need to test for an object's class name.
no Moose; # keywords are removed from the Person package
-=head1 ROAD MAP
-
-We have developed a roadmap for the next several releases of Moose.
-Development is currently moving at a rapid pace, so this roughly
-represents the next few weeks of Moose.
-
-=over 4
-
-=item 0.12
-
-This is the current release, it addresses some inconsistencies with
-Role composition and method modifiers. As an intermediate step, it
-removed method modifiers from Roles entirely, and roles can only
-compose methods and attributes.
-
-=item 0.13
-
-With this release will be adding a new keyword which will allow a
-finer grained form of reuse than roles. This keyword will form the
-basis of the features of the next few releases.
-
-=item 0.14
-
-With this release we will introduce a deferred version of method
-modifiers and a package/class-like container to hold them. In
-conjunction with the new keyword from 0.13, this will bring back
-the ability to compose groups of method modifiers which was
-removed in 0.12.
-
-=item 0.15
-
-With this release we will attempt to return the ability for Roles
-to compose method modifiers, by using the features introduced in
-0.13 and 0.14.
-
-It is our intention that this release will bring Roles to a
-fully stable level.
-
-=item 0.16 - 0.20
-
-The focus of these releases will be to bring the optimization
-capabilities of class immutability which we introduced in
-Class::MOP 0.30. I will get into the details of this as we
-get closer to it.
-
-=back
-
=head1 MISC.
=head2 What does Moose stand for??
Moose doesn't stand for one thing in particular, however, if you
-want, here are a few of my favorites, feel free to contribute
+want, here are a few of my favorites; feel free to contribute
more :)
=over 4
=item *
-It should be noted that C<super> and C<inner> can B<not> be used in the same
-method. However, they can be combined together with the same class hierarchy,
+It should be noted that C<super> and C<inner> C<cannot> be used in the same
+method. However, they can be combined together with the same class hierarchy;
see F<t/014_override_augment_inner_super.t> for an example.
-The reason that this is so is because C<super> is only valid within a method
+The reason for this is that C<super> is only valid within a method
with the C<override> modifier, and C<inner> will never be valid within an
C<override> method. In fact, C<augment> will skip over any C<override> methods
-when searching for it's appropriate C<inner>.
+when searching for its appropriate C<inner>.
This might seem like a restriction, but I am of the opinion that keeping these
-two features seperate (but interoperable) actually makes them easy to use since
+two features separate (but interoperable) actually makes them easy to use, since
their behavior is then easier to predict. Time will tell if I am right or not.
=back
=item Thanks to mst & chansen and the whole #moose poose for all the
ideas/feature-requests/encouragement
+=item Thanks to David "Theory" Wheeler for meta-discussions and spelling fixes.
+
=back
=head1 SEE ALSO
=item The #moose channel on irc.perl.org
+=item The Moose mailing list - moose@perl.org
+
=item L<http://forum2.org/moose/>
=item L<http://www.cs.utah.edu/plt/publications/oopsla04-gff.pdf>
projects / gitmo/Moose.git / blobdiff