284 lines
7.9 KiB
Perl
284 lines
7.9 KiB
Perl
package Moose::Meta::Role::Application::ToRole;
|
|
our $VERSION = '2.2207';
|
|
|
|
use strict;
|
|
use warnings;
|
|
use metaclass;
|
|
|
|
use parent 'Moose::Meta::Role::Application';
|
|
|
|
use Moose::Util 'throw_exception';
|
|
|
|
sub apply {
|
|
my ($self, $role1, $role2) = @_;
|
|
$self->SUPER::apply($role1, $role2);
|
|
$role2->add_role($role1);
|
|
}
|
|
|
|
sub check_role_exclusions {
|
|
my ($self, $role1, $role2) = @_;
|
|
if ( $role2->excludes_role($role1->name) ) {
|
|
throw_exception( ConflictDetectedInCheckRoleExclusions => role_name => $role2->name,
|
|
excluded_role_name => $role1->name,
|
|
);
|
|
}
|
|
foreach my $excluded_role_name ($role1->get_excluded_roles_list) {
|
|
if ( $role2->does_role($excluded_role_name) ) {
|
|
throw_exception( RoleDoesTheExcludedRole => role_name => $role2->name,
|
|
excluded_role_name => $excluded_role_name,
|
|
second_role_name => $role1->name,
|
|
);
|
|
}
|
|
$role2->add_excluded_roles($excluded_role_name);
|
|
}
|
|
}
|
|
|
|
sub check_required_methods {
|
|
my ($self, $role1, $role2) = @_;
|
|
foreach my $required_method ($role1->get_required_method_list) {
|
|
my $required_method_name = $required_method->name;
|
|
|
|
next if $self->is_aliased_method($required_method_name);
|
|
|
|
$role2->add_required_methods($required_method)
|
|
unless $role2->find_method_by_name($required_method_name);
|
|
}
|
|
}
|
|
|
|
sub check_required_attributes {
|
|
|
|
}
|
|
|
|
sub apply_attributes {
|
|
my ($self, $role1, $role2) = @_;
|
|
foreach my $attribute_name ($role1->get_attribute_list) {
|
|
# it if it has one already
|
|
if ($role2->has_attribute($attribute_name) &&
|
|
# make sure we haven't seen this one already too
|
|
$role2->get_attribute($attribute_name) != $role1->get_attribute($attribute_name)) {
|
|
|
|
my $role2_name = $role2->name;
|
|
|
|
throw_exception( AttributeConflictInRoles => role_name => $role1->name,
|
|
second_role_name => $role2->name,
|
|
attribute_name => $attribute_name
|
|
);
|
|
}
|
|
else {
|
|
$role2->add_attribute(
|
|
$role1->get_attribute($attribute_name)->clone
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
sub apply_methods {
|
|
my ( $self, $role1, $role2 ) = @_;
|
|
foreach my $method ( $role1->_get_local_methods ) {
|
|
|
|
my $method_name = $method->name;
|
|
|
|
next if $method->isa('Class::MOP::Method::Meta');
|
|
|
|
unless ( $self->is_method_excluded($method_name) ) {
|
|
|
|
my $role2_method = $role2->get_method($method_name);
|
|
if ( $role2_method
|
|
&& $role2_method->body != $method->body ) {
|
|
|
|
# method conflicts between roles used to result in the method
|
|
# becoming a requirement but now are permitted just like
|
|
# for classes, hence no code in this branch anymore.
|
|
}
|
|
else {
|
|
$role2->add_method(
|
|
$method_name,
|
|
$method,
|
|
);
|
|
}
|
|
}
|
|
|
|
next unless $self->is_method_aliased($method_name);
|
|
|
|
my $aliased_method_name = $self->get_method_aliases->{$method_name};
|
|
|
|
my $role2_method = $role2->get_method($aliased_method_name);
|
|
|
|
if ( $role2_method
|
|
&& $role2_method->body != $method->body ) {
|
|
|
|
throw_exception( CannotCreateMethodAliasLocalMethodIsPresent => aliased_method_name => $aliased_method_name,
|
|
method => $method,
|
|
role_name => $role2->name,
|
|
role_being_applied_name => $role1->name,
|
|
);
|
|
}
|
|
|
|
$role2->add_method(
|
|
$aliased_method_name,
|
|
$role1->get_method($method_name)
|
|
);
|
|
|
|
if ( !$role2->has_method($method_name) ) {
|
|
$role2->add_required_methods($method_name)
|
|
unless $self->is_method_excluded($method_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
sub apply_override_method_modifiers {
|
|
my ($self, $role1, $role2) = @_;
|
|
foreach my $method_name ($role1->get_method_modifier_list('override')) {
|
|
# it if it has one already then ...
|
|
if ($role2->has_method($method_name)) {
|
|
# if it is being composed into another role
|
|
# we have a conflict here, because you cannot
|
|
# combine an overridden method with a locally
|
|
# defined one
|
|
throw_exception( OverrideConflictInComposition => role_name => $role2->name,
|
|
role_being_applied_name => $role1->name,
|
|
method_name => $method_name
|
|
);
|
|
}
|
|
else {
|
|
# if we are a role, we need to make sure
|
|
# we don't have a conflict with the role
|
|
# we are composing into
|
|
if ($role2->has_override_method_modifier($method_name) &&
|
|
$role1->get_override_method_modifier($method_name) != $role2->get_override_method_modifier($method_name)) {
|
|
|
|
throw_exception( OverrideConflictInComposition => role_name => $role2->name,
|
|
role_being_applied_name => $role1->name,
|
|
method_name => $method_name,
|
|
two_overrides_found => 1
|
|
);
|
|
}
|
|
else {
|
|
# if there is no conflict,
|
|
# just add it to the role
|
|
$role2->add_override_method_modifier(
|
|
$method_name,
|
|
$role1->get_override_method_modifier($method_name)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sub apply_method_modifiers {
|
|
my ($self, $modifier_type, $role1, $role2) = @_;
|
|
my $add = "add_${modifier_type}_method_modifier";
|
|
my $get = "get_${modifier_type}_method_modifiers";
|
|
foreach my $method_name ($role1->get_method_modifier_list($modifier_type)) {
|
|
$role2->$add(
|
|
$method_name,
|
|
$_
|
|
) foreach $role1->$get($method_name);
|
|
}
|
|
}
|
|
|
|
1;
|
|
|
|
# ABSTRACT: Compose a role into another role
|
|
|
|
__END__
|
|
|
|
=pod
|
|
|
|
=encoding UTF-8
|
|
|
|
=head1 NAME
|
|
|
|
Moose::Meta::Role::Application::ToRole - Compose a role into another role
|
|
|
|
=head1 VERSION
|
|
|
|
version 2.2207
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
=head2 METHODS
|
|
|
|
=over 4
|
|
|
|
=item B<new>
|
|
|
|
=item B<meta>
|
|
|
|
=item B<apply>
|
|
|
|
=item B<check_role_exclusions>
|
|
|
|
=item B<check_required_methods>
|
|
|
|
=item B<check_required_attributes>
|
|
|
|
=item B<apply_attributes>
|
|
|
|
=item B<apply_methods>
|
|
|
|
=item B<apply_method_modifiers>
|
|
|
|
=item B<apply_override_method_modifiers>
|
|
|
|
=back
|
|
|
|
=head1 BUGS
|
|
|
|
See L<Moose/BUGS> for details on reporting bugs.
|
|
|
|
=head1 AUTHORS
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
Stevan Little <stevan@cpan.org>
|
|
|
|
=item *
|
|
|
|
Dave Rolsky <autarch@urth.org>
|
|
|
|
=item *
|
|
|
|
Jesse Luehrs <doy@cpan.org>
|
|
|
|
=item *
|
|
|
|
Shawn M Moore <sartak@cpan.org>
|
|
|
|
=item *
|
|
|
|
יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
|
|
|
|
=item *
|
|
|
|
Karen Etheridge <ether@cpan.org>
|
|
|
|
=item *
|
|
|
|
Florian Ragwitz <rafl@debian.org>
|
|
|
|
=item *
|
|
|
|
Hans Dieter Pearcey <hdp@cpan.org>
|
|
|
|
=item *
|
|
|
|
Chris Prather <chris@prather.org>
|
|
|
|
=item *
|
|
|
|
Matt S Trout <mstrout@cpan.org>
|
|
|
|
=back
|
|
|
|
=head1 COPYRIGHT AND LICENSE
|
|
|
|
This software is copyright (c) 2006 by Infinity Interactive, Inc.
|
|
|
|
This is free software; you can redistribute it and/or modify it under
|
|
the same terms as the Perl 5 programming language system itself.
|
|
|
|
=cut
|