MooX::Role::Parameterized - roles with composition parameters
package Counter;
use Moo::Role;
use MooX::Role::Parameterized;
use Types::Standard qw( Str );
parameter name => (
is => 'ro', # this is mandatory on Moo
isa => Str, # optional type
required => 1, # mark the parameter "name" as "required"
);
role {
my ( $p, $mop ) = @_;
my $name = $p->name; # $p->{name} will also work
$mop->has($name => (
is => 'rw',
default => sub { 0 },
));
$mop->method("increment_$name" => sub {
my $self = shift;
$self->$name($self->$name + 1);
});
$mop->method("reset_$name" => sub {
my $self = shift;
$self->$name(0);
});
};
package MyGame::Weapon;
use Moo;
use MooX::Role::Parameterized::With;
with Counter => { # injects 'enchantment' attribute and
name => 'enchantment', # methods increment_enchantment (+1)
}; # reset_enchantment (set to zero)
package MyGame::Wand;
use Moo;
use MooX::Role::Parameterized::With;
with Counter => { # injects 'zapped' attribute and
name => 'zapped', # methods increment_zapped (+1)
}; # reset_zapped (set to zerà)
It is an experimental port of MooseX::Role::Parameterized to Moo.
This package exports the following subroutines: parameter, role, apply_roles_to_target and apply.
This function receive the same parameter as Moo::has. If present, the parameter hash reference will be blessed as a Moo class. This is useful to add default values or set some parameters as required.
This function accepts just one code block. Will execute this code then we apply the Role in the target class and will receive the parameter hash reference + one mop object.
The params reference will be blessed if there is some parameter defined on this role.
The mop object is a proxy to the target class.
It offer a better way to call has, after, before, around, with and requires without side effects.
Use method to inject a new method and meta to access TARGET_PACKAGE->meta
Please use:
my ($p, $mop) = @_;
...
$mop->has($p->{attribute} =>(...));
$mop->method(name => sub { ... });
$mop->meta->make_immutable;
Alias to apply_roles_to_target.
When called, will apply the /role on the current package. The behavior depends of the parameter list.
This will install the role in the target package. Does not need call with.
Important, if you want to apply the role multiple times, like to create multiple attributes, please pass an arrayref.
package My::Role;
use Moo::Role;
use MooX::Role::Parameterized;
role {
my ($params, $mop) = @_;
$mop->has( $params->{attr} => ( is => 'rw' ));
$mop->method($params->{method} => sub {
1024;
});
};
package My::Class;
use Moo;
use My::Role;
My::Role->apply_roles_to_target([{ # original way of add this role
attr => 'baz', # add attribute read-write called 'baz'
method => 'run' # add method called 'run' and return 1024
}
, # and if the apply receives one arrayref
{ attr => 'bam', # will call the role block multiple times.
method => 'jump' # PLEASE CALL apply once
}]);
By setting $MooX::Role::Parameterized::VERBOSE with some true value we will carp on certain conditions
(method override, unable to load package, etc).
Default is false.
Deleted
Deleted
See MooX::Role::Parameterized::With package to easily load and apply roles.
Allow to do this:
package FooWith;
use Moo;
use MooX::Role::Parameterized::With; # overrides Moo::with
with "Bar" => { # apply parameterized role Bar once
attr => 'baz',
method => 'run'
}, "Other::Role" => [ # apply parameterized role "Other::Role" twice
{ ... }, # with different parameters
{ ... },
],
"Some::Moo::Role",
"Some::Role::Tiny";
has foo => ( is => 'ro'); # continue with normal Moo code
MooseX::Role::Parameterized - Moose version
- FGA fabrice.gabolde@gmail.com
- PERLANCAR perlancar@gmail.com
- CHOROBA choroba@cpan.org
- Ed J mohawk2@users.noreply.github.com
The MIT License
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obtaining a copy of this software and associated
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The above copyright notice and this permission notice shall
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Tiago Peczenyj <tiago (dot) peczenyj (at) gmail (dot) com>
Please report any bugs or feature requests on the bugtracker website