-#!perl
package Mouse;
use strict;
use warnings;
-
-our $VERSION = '0.02';
use 5.006;
+use base 'Exporter';
+
+our $VERSION = '0.20';
-use Sub::Exporter;
use Carp 'confess';
use Scalar::Util 'blessed';
-use Class::Method::Modifiers ();
+use Mouse::Util;
use Mouse::Meta::Attribute;
use Mouse::Meta::Class;
use Mouse::Object;
-use Mouse::TypeRegistry;
-
-do {
- my $CALLER;
-
- my %exports = (
- meta => sub {
- my $meta = Mouse::Meta::Class->initialize($CALLER);
- return sub { $meta };
- },
-
- extends => sub {
- my $caller = $CALLER;
- return sub {
- $caller->meta->superclasses(@_);
- };
- },
-
- has => sub {
- return sub {
- my $package = caller;
- my $names = shift;
- $names = [$names] if !ref($names);
-
- for my $name (@$names) {
- Mouse::Meta::Attribute->create($package, $name, @_);
- }
- };
- },
-
- confess => sub {
- return \&confess;
- },
-
- blessed => sub {
- return \&blessed;
- },
-
- before => sub {
- return \&Class::Method::Modifiers::before;
- },
-
- after => sub {
- return \&Class::Method::Modifiers::after;
- },
-
- around => sub {
- return \&Class::Method::Modifiers::around;
- },
- );
-
- my $exporter = Sub::Exporter::build_exporter({
- exports => \%exports,
- groups => { default => [':all'] },
- });
+use Mouse::Util::TypeConstraints;
+
+our @EXPORT = qw(extends has before after around override super blessed confess with);
+
+sub extends { Mouse::Meta::Class->initialize(caller)->superclasses(@_) }
+
+sub has {
+ my $meta = Mouse::Meta::Class->initialize(caller);
+ $meta->add_attribute(@_);
+}
+
+sub before {
+ my $meta = Mouse::Meta::Class->initialize(caller);
+
+ my $code = pop;
+
+ for (@_) {
+ $meta->add_before_method_modifier($_ => $code);
+ }
+}
+
+sub after {
+ my $meta = Mouse::Meta::Class->initialize(caller);
+
+ my $code = pop;
+
+ for (@_) {
+ $meta->add_after_method_modifier($_ => $code);
+ }
+}
- sub import {
- $CALLER = caller;
+sub around {
+ my $meta = Mouse::Meta::Class->initialize(caller);
+
+ my $code = pop;
+
+ for (@_) {
+ $meta->add_around_method_modifier($_ => $code);
+ }
+}
+
+sub with {
+ Mouse::Util::apply_all_roles((caller)[0], @_);
+}
+
+our $SUPER_PACKAGE;
+our $SUPER_BODY;
+our @SUPER_ARGS;
+
+sub super {
+ # This check avoids a recursion loop - see
+ # t/100_bugs/020_super_recursion.t
+ return if defined $SUPER_PACKAGE && $SUPER_PACKAGE ne caller();
+ return unless $SUPER_BODY; $SUPER_BODY->(@SUPER_ARGS);
+}
+
+sub override {
+ my $meta = Mouse::Meta::Class->initialize(caller);
+ my $pkg = $meta->name;
+
+ my $name = shift;
+ my $code = shift;
+
+ my $body = $pkg->can($name)
+ or confess "You cannot override '$name' because it has no super method";
+
+ $meta->add_method($name => sub {
+ local $SUPER_PACKAGE = $pkg;
+ local @SUPER_ARGS = @_;
+ local $SUPER_BODY = $body;
+
+ $code->(@_);
+ });
+}
- strict->import;
- warnings->import;
+sub import {
+ my $class = shift;
- my $meta = Mouse::Meta::Class->initialize($CALLER);
- $meta->superclasses('Mouse::Object')
- unless $meta->superclasses;
+ strict->import;
+ warnings->import;
- goto $exporter;
+ my $opts = do {
+ if (ref($_[0]) && ref($_[0]) eq 'HASH') {
+ shift @_;
+ } else {
+ +{ };
+ }
+ };
+ my $level = delete $opts->{into_level};
+ $level = 0 unless defined $level;
+ my $caller = caller($level);
+
+ # we should never export to main
+ if ($caller eq 'main') {
+ warn qq{$class does not export its sugar to the 'main' package.\n};
+ return;
}
- sub unimport {
- my $caller = caller;
+ my $meta = Mouse::Meta::Class->initialize($caller);
+ $meta->superclasses('Mouse::Object')
+ unless $meta->superclasses;
+
+ # make a subtype for each Mouse class
+ class_type($caller) unless find_type_constraint($caller);
+
+ no strict 'refs';
+ no warnings 'redefine';
+ *{$caller.'::meta'} = sub { $meta };
+ if (@_) {
+ __PACKAGE__->export_to_level( $level+1, $class, @_);
+ } else {
+ # shortcut for the common case of no type character
no strict 'refs';
- for my $keyword (keys %exports) {
- next if $keyword eq 'meta'; # we don't delete this one
- delete ${ $caller . '::' }{$keyword};
+ for my $keyword (@EXPORT) {
+ *{ $caller . '::' . $keyword } = *{__PACKAGE__ . '::' . $keyword};
}
}
-};
+}
+
+sub unimport {
+ my $caller = caller;
+
+ no strict 'refs';
+ for my $keyword (@EXPORT) {
+ delete ${ $caller . '::' }{$keyword};
+ }
+}
sub load_class {
my $class = shift;
confess "Invalid class name ($display)";
}
+ return 1 if $class eq 'Mouse::Object';
return 1 if is_class_loaded($class);
(my $file = "$class.pm") =~ s{::}{/}g;
Mouse - Moose minus the antlers
-=head1 VERSION
-
-Version 0.02 released 11 Jun 08
-
=head1 SYNOPSIS
package Point;
=head1 DESCRIPTION
-L<Moose> is wonderful.
+L<Moose> is wonderful. B<Use Moose instead of Mouse.>
-Unfortunately, it's a little slow. Though significant progress has been made
-over the years, the compile time penalty is a non-starter for some
+Unfortunately, Moose has a compile-time penalty. Though significant progress has
+been made over the years, the compile time penalty is a non-starter for some
applications.
-Mouse aims to alleviate this by providing a subset of Moose's
-functionality, faster. In particular, L<Moose/has> is missing only a few
-expert-level features.
+Mouse aims to alleviate this by providing a subset of Moose's functionality,
+faster.
+
+We're also going as light on dependencies as possible.
+L<Class::Method::Modifiers> or L<Data::Util> is required if you want support
+for L</before>, L</after>, and L</around>.
=head2 MOOSE COMPAT
Compatibility with Moose has been the utmost concern. Fewer than 1% of the
tests fail when run against Moose instead of Mouse. Mouse code coverage is also
-over 99%. Even the error messages are taken from Moose. The Mouse code just
-runs the test suite 3x-4x faster.
+over 96%. Even the error messages are taken from Moose. The Mouse code just
+runs the test suite 4x faster.
The idea is that, if you need the extra power, you should be able to run
C<s/Mouse/Moose/g> on your codebase and have nothing break. To that end,
-nothingmuch has written L<Squirrel> (part of this distribution) which will act
-as Mouse unless Moose is loaded, in which case it will act as Moose.
+we have written L<Any::Moose> which will act as Mouse unless Moose is loaded,
+in which case it will act as Moose.
-Mouse also has the blessings of Moose's author, stevan.
+=head2 MouseX
-=head2 MISSING FEATURES
+Please don't copy MooseX code to MouseX. If you need extensions, you really
+should upgrade to Moose. We don't need two parallel sets of extensions!
-=head3 Method modifiers
+If you really must write a Mouse extension, please contact the Moose mailing
+list or #moose on IRC beforehand.
-Fixing this one next, with a reimplementation of L<Class::Method::Modifiers>.
-
-=head3 Roles
-
-Fixing this one slightly less soon. stevan has suggested an implementation
-strategy. Mouse currently mostly ignores methods.
+=head1 KEYWORDS
-=head3 Complex types
+=head2 meta -> Mouse::Meta::Class
-User-defined type constraints and parameterized types may be implemented. Type
-coercions probably not (patches welcome).
+Returns this class' metaclass instance.
-=head3 Bootstrapped meta world
+=head2 extends superclasses
-Very handy for extensions to the MOP. Not pressing, but would be nice to have.
+Sets this class' superclasses.
-=head3 Modification of attribute metaclass
+=head2 before (method|methods) => Code
-When you declare an attribute with L</has>, you get the inlined accessors
-installed immediately. Modifying the attribute metaclass, even if possible,
-does nothing.
+Installs a "before" method modifier. See L<Moose/before> or
+L<Class::Method::Modifiers/before>.
-=head3 Lots more..
+Use of this feature requires L<Class::Method::Modifiers>!
-MouseX?
+=head2 after (method|methods) => Code
-=head1 KEYWORDS
+Installs an "after" method modifier. See L<Moose/after> or
+L<Class::Method::Modifiers/after>.
-=head2 meta -> Mouse::Meta::Class
+Use of this feature requires L<Class::Method::Modifiers>!
-Returns this class' metaclass instance.
+=head2 around (method|methods) => Code
-=head2 extends superclasses
+Installs an "around" method modifier. See L<Moose/around> or
+L<Class::Method::Modifiers/around>.
-Sets this class' superclasses.
+Use of this feature requires L<Class::Method::Modifiers>!
=head2 has (name|names) => parameters
has a builder, then providing a value for the attribute in the constructor is
optional.
-=item init_arg => Str
+=item init_arg => Str | Undef
-Allows you to use a different key name in the constructor.
+Allows you to use a different key name in the constructor. If undef, the
+attribue can't be passed to the constructor.
=item default => Value | CodeRef
Lets you automatically weaken any reference stored in the attribute.
-=item trigger => Coderef
+Use of this feature requires L<Scalar::Util>!
-Any time the attribute's value is set (either through the accessor or the
-constructor), the trigger is called on it. The trigger receives as arguments
-the instance, the new value, and the attribute instance.
+=item trigger => CodeRef
+
+Any time the attribute's value is set (either through the accessor or the constructor), the trigger is called on it. The trigger receives as arguments the instance, the new value, and the attribute instance.
+
+Mouse 0.05 supported more complex triggers, but this behavior is now removed.
=item builder => Str
bucket status). You must specify an appropriate type constraint to use
auto_deref.
+=item lazy_build => 0|1
+
+Automatically define lazy => 1 as well as builder => "_build_$attr", clearer =>
+"clear_$attr', predicate => 'has_$attr' unless they are already defined.
+
=back
=head2 confess error -> BOOM
involves checking for the existence of C<$VERSION>, C<@ISA>, and any
locally-defined method.
-=head1 AUTHOR
+=head1 AUTHORS
Shawn M Moore, C<< <sartak at gmail.com> >>
+Yuval Kogman, C<< <nothingmuch at woobling.org> >>
+
+tokuhirom
+
+Yappo
+
+wu-lee
+
with plenty of code borrowed from L<Class::MOP> and L<Moose>
=head1 BUGS
projects / gitmo/Mouse.git / blobdiff