use warnings;
use metaclass;
+use Sub::Name 'subname';
use Carp 'confess';
-use Scalar::Util 'blessed';
-use B 'svref_2object';
+use Scalar::Util 'blessed', 'reftype';
+
+our $VERSION = '0.12';
+our $AUTHORITY = 'cpan:STEVAN';
use Moose::Meta::Class;
+use Moose::Meta::Role::Method;
+use Moose::Meta::Role::Method::Required;
-our $VERSION = '0.03';
+use base 'Class::MOP::Module';
-## Attributes
+## ------------------------------------------------------------------
+## NOTE:
+## I normally don't do this, but I am doing
+## a whole bunch of meta-programmin in this
+## module, so it just makes sense. For a clearer
+## picture of what is going on in the next
+## several lines of code, look at the really
+## big comment at the end of this file (right
+## before the POD).
+## - SL
+## ------------------------------------------------------------------
-## the meta for the role package
+my $META = __PACKAGE__->meta;
-__PACKAGE__->meta->add_attribute('_role_meta' => (
- reader => '_role_meta',
- init_arg => ':role_meta'
-));
+## ------------------------------------------------------------------
+## attributes ...
-## roles
+# NOTE:
+# since roles are lazy, we hold all the attributes
+# of the individual role in 'statis' until which
+# time when it is applied to a class. This means
+# keeping a lot of things in hash maps, so we are
+# using a little of that meta-programmin' magic
+# here an saving lots of extra typin. And since
+# many of these attributes above require similar
+# functionality to support them, so we again use
+# the wonders of meta-programmin' to deliver a
+# very compact solution to this normally verbose
+# problem.
+# - SL
+
+foreach my $action (
+ {
+ name => 'excluded_roles_map',
+ attr_reader => 'get_excluded_roles_map' ,
+ methods => {
+ add => 'add_excluded_roles',
+ get_list => 'get_excluded_roles_list',
+ existence => 'excludes_role',
+ }
+ },
+ {
+ name => 'required_methods',
+ attr_reader => 'get_required_methods_map',
+ methods => {
+ add => 'add_required_methods',
+ remove => 'remove_required_methods',
+ get_list => 'get_required_method_list',
+ existence => 'requires_method',
+ }
+ },
+ {
+ name => 'attribute_map',
+ attr_reader => 'get_attribute_map',
+ methods => {
+ get => 'get_attribute',
+ get_list => 'get_attribute_list',
+ existence => 'has_attribute',
+ remove => 'remove_attribute',
+ }
+ }
+) {
+
+ my $attr_reader = $action->{attr_reader};
+ my $methods = $action->{methods};
+
+ # create the attribute
+ $META->add_attribute($action->{name} => (
+ reader => $attr_reader,
+ default => sub { {} }
+ ));
+
+ # create some helper methods
+ $META->add_method($methods->{add} => sub {
+ my ($self, @values) = @_;
+ $self->$attr_reader->{$_} = undef foreach @values;
+ }) if exists $methods->{add};
+
+ $META->add_method($methods->{get_list} => sub {
+ my ($self) = @_;
+ keys %{$self->$attr_reader};
+ }) if exists $methods->{get_list};
+
+ $META->add_method($methods->{get} => sub {
+ my ($self, $name) = @_;
+ $self->$attr_reader->{$name}
+ }) if exists $methods->{get};
+
+ $META->add_method($methods->{existence} => sub {
+ my ($self, $name) = @_;
+ exists $self->$attr_reader->{$name} ? 1 : 0;
+ }) if exists $methods->{existence};
+
+ $META->add_method($methods->{remove} => sub {
+ my ($self, @values) = @_;
+ delete $self->$attr_reader->{$_} foreach @values;
+ }) if exists $methods->{remove};
+}
-__PACKAGE__->meta->add_attribute('roles' => (
- reader => 'get_roles',
- default => sub { [] }
-));
+## some things don't always fit, so they go here ...
-## excluded roles
+sub add_attribute {
+ my $self = shift;
+ my $name = shift;
+ my $attr_desc;
+ if (scalar @_ == 1 && ref($_[0]) eq 'HASH') {
+ $attr_desc = $_[0];
+ }
+ else {
+ $attr_desc = { @_ };
+ }
+ $self->get_attribute_map->{$name} = $attr_desc;
+}
-__PACKAGE__->meta->add_attribute('excluded_roles_map' => (
- reader => 'get_excluded_roles_map',
- default => sub { {} }
-));
+sub _clean_up_required_methods {
+ my $self = shift;
+ foreach my $method ($self->get_required_method_list) {
+ $self->remove_required_methods($method)
+ if $self->has_method($method);
+ }
+}
-## attributes
+## ------------------------------------------------------------------
+## method modifiers
-__PACKAGE__->meta->add_attribute('attribute_map' => (
- reader => 'get_attribute_map',
- default => sub { {} }
-));
+# NOTE:
+# the before/around/after method modifiers are
+# stored by name, but there can be many methods
+# then associated with that name. So again we have
+# lots of similar functionality, so we can do some
+# meta-programmin' and save some time.
+# - SL
-## required methods
+foreach my $modifier_type (qw[ before around after ]) {
-__PACKAGE__->meta->add_attribute('required_methods' => (
- reader => 'get_required_methods_map',
- default => sub { {} }
-));
+ my $attr_reader = "get_${modifier_type}_method_modifiers_map";
+
+ # create the attribute ...
+ $META->add_attribute("${modifier_type}_method_modifiers" => (
+ reader => $attr_reader,
+ default => sub { {} }
+ ));
+
+ # and some helper methods ...
+ $META->add_method("get_${modifier_type}_method_modifiers" => sub {
+ my ($self, $method_name) = @_;
+ #return () unless exists $self->$attr_reader->{$method_name};
+ @{$self->$attr_reader->{$method_name}};
+ });
+
+ $META->add_method("has_${modifier_type}_method_modifiers" => sub {
+ my ($self, $method_name) = @_;
+ # NOTE:
+ # for now we assume that if it exists,..
+ # it has at least one modifier in it
+ (exists $self->$attr_reader->{$method_name}) ? 1 : 0;
+ });
-## method modifiers
+ $META->add_method("add_${modifier_type}_method_modifier" => sub {
+ my ($self, $method_name, $method) = @_;
-__PACKAGE__->meta->add_attribute('before_method_modifiers' => (
- reader => 'get_before_method_modifiers_map',
- default => sub { {} } # (<name> => [ (CODE) ])
-));
+ $self->$attr_reader->{$method_name} = []
+ unless exists $self->$attr_reader->{$method_name};
-__PACKAGE__->meta->add_attribute('after_method_modifiers' => (
- reader => 'get_after_method_modifiers_map',
- default => sub { {} } # (<name> => [ (CODE) ])
-));
+ my $modifiers = $self->$attr_reader->{$method_name};
-__PACKAGE__->meta->add_attribute('around_method_modifiers' => (
- reader => 'get_around_method_modifiers_map',
- default => sub { {} } # (<name> => [ (CODE) ])
-));
+ # NOTE:
+ # check to see that we aren't adding the
+ # same code twice. We err in favor of the
+ # first on here, this may not be as expected
+ foreach my $modifier (@{$modifiers}) {
+ return if $modifier == $method;
+ }
-__PACKAGE__->meta->add_attribute('override_method_modifiers' => (
+ push @{$modifiers} => $method;
+ });
+
+}
+
+## ------------------------------------------------------------------
+## override method mofidiers
+
+$META->add_attribute('override_method_modifiers' => (
reader => 'get_override_method_modifiers_map',
- default => sub { {} } # (<name> => CODE)
+ default => sub { {} }
));
-## Methods
-
-sub new {
- my $class = shift;
- my %options = @_;
- $options{':role_meta'} = Moose::Meta::Class->initialize(
- $options{role_name},
- ':method_metaclass' => 'Moose::Meta::Role::Method'
- ) unless defined $options{':role_meta'} &&
- $options{':role_meta'}->isa('Moose::Meta::Class');
- my $self = $class->meta->new_object(%options);
- return $self;
+# NOTE:
+# these are a little different because there
+# can only be one per name, whereas the other
+# method modifiers can have multiples.
+# - SL
+
+sub add_override_method_modifier {
+ my ($self, $method_name, $method) = @_;
+ (!$self->has_method($method_name))
+ || confess "Cannot add an override of method '$method_name' " .
+ "because there is a local version of '$method_name'";
+ $self->get_override_method_modifiers_map->{$method_name} = $method;
}
+sub has_override_method_modifier {
+ my ($self, $method_name) = @_;
+ # NOTE:
+ # for now we assume that if it exists,..
+ # it has at least one modifier in it
+ (exists $self->get_override_method_modifiers_map->{$method_name}) ? 1 : 0;
+}
+
+sub get_override_method_modifier {
+ my ($self, $method_name) = @_;
+ $self->get_override_method_modifiers_map->{$method_name};
+}
+
+## general list accessor ...
+
+sub get_method_modifier_list {
+ my ($self, $modifier_type) = @_;
+ my $accessor = "get_${modifier_type}_method_modifiers_map";
+ keys %{$self->$accessor};
+}
+
+## ------------------------------------------------------------------
## subroles
+__PACKAGE__->meta->add_attribute('roles' => (
+ reader => 'get_roles',
+ default => sub { [] }
+));
+
sub add_role {
my ($self, $role) = @_;
(blessed($role) && $role->isa('Moose::Meta::Role'))
push @{$self->get_roles} => $role;
}
+sub calculate_all_roles {
+ my $self = shift;
+ my %seen;
+ grep {
+ !$seen{$_->name}++
+ } ($self, map {
+ $_->calculate_all_roles
+ } @{ $self->get_roles });
+}
+
sub does_role {
my ($self, $role_name) = @_;
(defined $role_name)
return 0;
}
-## excluded roles
+## ------------------------------------------------------------------
+## methods
-sub add_excluded_roles {
- my ($self, @excluded_role_names) = @_;
- $self->get_excluded_roles_map->{$_} = undef foreach @excluded_role_names;
-}
+sub method_metaclass { 'Moose::Meta::Role::Method' }
-sub get_excluded_roles_list {
- my ($self) = @_;
- keys %{$self->get_excluded_roles_map};
-}
+sub get_method_map {
+ my $self = shift;
+ my $map = {};
-sub excludes_role {
- my ($self, $role_name) = @_;
- exists $self->get_excluded_roles_map->{$role_name} ? 1 : 0;
-}
+ my $role_name = $self->name;
+ my $method_metaclass = $self->method_metaclass;
-## required methods
+ foreach my $symbol ($self->list_all_package_symbols('CODE')) {
-sub add_required_methods {
- my ($self, @methods) = @_;
- $self->get_required_methods_map->{$_} = undef foreach @methods;
-}
+ my $code = $self->get_package_symbol('&' . $symbol);
+
+ my ($pkg, $name) = Class::MOP::get_code_info($code);
-sub remove_required_methods {
- my ($self, @methods) = @_;
- delete $self->get_required_methods_map->{$_} foreach @methods;
+ if ($pkg->can('meta')
+ # NOTE:
+ # we don't know what ->meta we are calling
+ # here, so we need to be careful cause it
+ # just might blow up at us, or just complain
+ # loudly (in the case of Curses.pm) so we
+ # just be a little overly cautious here.
+ # - SL
+ && eval { no warnings; blessed($pkg->meta) }
+ && $pkg->meta->isa('Moose::Meta::Role')) {
+ my $role = $pkg->meta->name;
+ next unless $self->does_role($role);
+ }
+ else {
+ next if ($pkg || '') ne $role_name &&
+ ($name || '') ne '__ANON__';
+ }
+
+ $map->{$symbol} = $method_metaclass->wrap($code);
+ }
+
+ return $map;
}
-sub get_required_method_list {
- my ($self) = @_;
- keys %{$self->get_required_methods_map};
+sub get_method {
+ my ($self, $name) = @_;
+ $self->get_method_map->{$name}
}
-sub requires_method {
- my ($self, $method_name) = @_;
- exists $self->get_required_methods_map->{$method_name} ? 1 : 0;
+sub has_method {
+ my ($self, $name) = @_;
+ exists $self->get_method_map->{$name} ? 1 : 0
}
-sub _clean_up_required_methods {
+sub find_method_by_name { (shift)->get_method(@_) }
+
+sub get_method_list {
my $self = shift;
- foreach my $method ($self->get_required_method_list) {
- $self->remove_required_methods($method)
- if $self->has_method($method);
- }
+ grep { !/^meta$/ } keys %{$self->get_method_map};
}
-## methods
+sub alias_method {
+ my ($self, $method_name, $method) = @_;
+ (defined $method_name && $method_name)
+ || confess "You must define a method name";
-# NOTE:
-# we delegate to some role_meta methods for convience here
-# the Moose::Meta::Role is meant to be a read-only interface
-# to the underlying role package, if you want to manipulate
-# that, just use ->role_meta
-
-sub name { (shift)->_role_meta->name }
-sub version { (shift)->_role_meta->version }
-
-sub get_method { (shift)->_role_meta->get_method(@_) }
-sub has_method { (shift)->_role_meta->has_method(@_) }
-sub alias_method { (shift)->_role_meta->alias_method(@_) }
-sub get_method_list {
- my ($self) = @_;
- grep {
- # NOTE:
- # this is a kludge for now,... these functions
- # should not be showing up in the list at all,
- # but they do, so we need to switch Moose::Role
- # and Moose to use Sub::Exporter to prevent this
- !/^(meta|has|extends|blessed|confess|augment|inner|override|super|before|after|around|with|requires)$/
- } $self->_role_meta->get_method_list;
+ my $body = (blessed($method) ? $method->body : $method);
+ ('CODE' eq (reftype($body) || ''))
+ || confess "Your code block must be a CODE reference";
+
+ $self->add_package_symbol("&${method_name}" => $body);
}
-# ... however the items in statis (attributes & method modifiers)
-# can be removed and added to through this API
+sub reset_package_cache_flag { () }
+sub update_package_cache_flag { () }
-# attributes
+## ------------------------------------------------------------------
+## role construction
+## ------------------------------------------------------------------
-sub add_attribute {
- my ($self, $name, %attr_desc) = @_;
- $self->get_attribute_map->{$name} = \%attr_desc;
-}
+my $anon_counter = 0;
-sub has_attribute {
- my ($self, $name) = @_;
- exists $self->get_attribute_map->{$name} ? 1 : 0;
-}
+sub apply {
+ my ($self, $other) = @_;
-sub get_attribute {
- my ($self, $name) = @_;
- $self->get_attribute_map->{$name}
-}
+ unless ($other->isa('Moose::Meta::Class') || $other->isa('Moose::Meta::Role')) {
-sub remove_attribute {
- my ($self, $name) = @_;
- delete $self->get_attribute_map->{$name}
-}
+ # Runtime Role mixins
-sub get_attribute_list {
- my ($self) = @_;
- keys %{$self->get_attribute_map};
-}
+ # FIXME:
+ # We really should do this better, and
+ # cache the results of our efforts so
+ # that we don't need to repeat them.
-# method modifiers
+ my $pkg_name = __PACKAGE__ . "::__RUNTIME_ROLE_ANON_CLASS__::" . $anon_counter++;
+ eval "package " . $pkg_name . "; our \$VERSION = '0.00';";
+ die $@ if $@;
-# mimic the metaclass API
-sub add_before_method_modifier { (shift)->_add_method_modifier('before', @_) }
-sub add_around_method_modifier { (shift)->_add_method_modifier('around', @_) }
-sub add_after_method_modifier { (shift)->_add_method_modifier('after', @_) }
+ my $object = $other;
-sub _add_method_modifier {
- my ($self, $modifier_type, $method_name, $method) = @_;
- my $accessor = "get_${modifier_type}_method_modifiers_map";
- $self->$accessor->{$method_name} = []
- unless exists $self->$accessor->{$method_name};
- my $modifiers = $self->$accessor->{$method_name};
- # NOTE:
- # check to see that we aren't adding the
- # same code twice. We err in favor of the
- # first on here, this may not be as expected
- foreach my $modifier (@{$modifiers}) {
- return if $modifier == $method;
- }
- push @{$modifiers} => $method;
-}
+ $other = Moose::Meta::Class->initialize($pkg_name);
+ $other->superclasses(blessed($object));
-sub add_override_method_modifier {
- my ($self, $method_name, $method) = @_;
- $self->get_override_method_modifiers_map->{$method_name} = $method;
-}
+ bless $object => $pkg_name;
+ }
-sub has_before_method_modifiers { (shift)->_has_method_modifiers('before', @_) }
-sub has_around_method_modifiers { (shift)->_has_method_modifiers('around', @_) }
-sub has_after_method_modifiers { (shift)->_has_method_modifiers('after', @_) }
+ $self->_check_excluded_roles($other);
+ $self->_check_required_methods($other);
-# override just checks for one,..
-# but we can still re-use stuff
-sub has_override_method_modifier { (shift)->_has_method_modifiers('override', @_) }
+ $self->_apply_attributes($other);
+ $self->_apply_methods($other);
-sub _has_method_modifiers {
- my ($self, $modifier_type, $method_name) = @_;
- my $accessor = "get_${modifier_type}_method_modifiers_map";
# NOTE:
- # for now we assume that if it exists,..
- # it has at least one modifier in it
- (exists $self->$accessor->{$method_name}) ? 1 : 0;
-}
+ # we need a clear cache flag too ...
+ $other->reset_package_cache_flag;
-sub get_before_method_modifiers { (shift)->_get_method_modifiers('before', @_) }
-sub get_around_method_modifiers { (shift)->_get_method_modifiers('around', @_) }
-sub get_after_method_modifiers { (shift)->_get_method_modifiers('after', @_) }
+ $self->_apply_override_method_modifiers($other);
+
+ $self->_apply_before_method_modifiers($other);
+ $self->_apply_around_method_modifiers($other);
+ $self->_apply_after_method_modifiers($other);
-sub _get_method_modifiers {
- my ($self, $modifier_type, $method_name) = @_;
- my $accessor = "get_${modifier_type}_method_modifiers_map";
- @{$self->$accessor->{$method_name}};
+ $other->add_role($self);
}
-sub get_override_method_modifier {
- my ($self, $method_name) = @_;
- $self->get_override_method_modifiers_map->{$method_name};
+sub combine {
+ my ($class, @roles) = @_;
+
+ require Moose::Meta::Role::Application::RoleSummation;
+ require Moose::Meta::Role::Composite;
+
+ my $c = Moose::Meta::Role::Composite->new(roles => \@roles);
+ Moose::Meta::Role::Application::RoleSummation->new->apply($c);
+ return $c;
}
-sub get_method_modifier_list {
- my ($self, $modifier_type) = @_;
- my $accessor = "get_${modifier_type}_method_modifiers_map";
- keys %{$self->$accessor};
-}
+## ------------------------------------------------------------------
## applying a role to a class ...
-sub apply {
+sub _check_excluded_roles {
my ($self, $other) = @_;
-
if ($other->excludes_role($self->name)) {
confess "Conflict detected: " . $other->name . " excludes role '" . $self->name . "'";
}
-
-# warn "... Checking " . $self->name . " for excluded methods";
foreach my $excluded_role_name ($self->get_excluded_roles_list) {
-# warn "... Checking if '$excluded_role_name' is done by " . $other->name . " for " . $self->name;
- if ($other->does_role($excluded_role_name)) {
+ if ($other->does_role($excluded_role_name)) {
confess "The class " . $other->name . " does the excluded role '$excluded_role_name'";
}
else {
if ($other->isa('Moose::Meta::Role')) {
-# warn ">>> The role " . $other->name . " does not do the excluded role '$excluded_role_name', so we are adding it in";
$other->add_excluded_roles($excluded_role_name);
}
- else {
-# warn ">>> The class " . $other->name . " does not do the excluded role '$excluded_role_name', so we can just go about our business";
- }
+ # else -> ignore it :)
}
- }
-
-
+ }
+}
+
+sub _check_required_methods {
+ my ($self, $other) = @_;
# NOTE:
- # we might need to move this down below the
- # the attributes so that we can require any
- # attribute accessors. However I am thinking
- # that maybe those are somehow exempt from
- # the require methods stuff.
+ # we might need to move this down below the
+ # the attributes so that we can require any
+ # attribute accessors. However I am thinking
+ # that maybe those are somehow exempt from
+ # the require methods stuff.
foreach my $required_method_name ($self->get_required_method_list) {
- unless ($other->has_method($required_method_name)) {
+
+ unless ($other->find_method_by_name($required_method_name)) {
if ($other->isa('Moose::Meta::Role')) {
$other->add_required_methods($required_method_name);
}
else {
- confess "'" . $self->name . "' requires the method '$required_method_name' " .
+ confess "'" . $self->name . "' requires the method '$required_method_name' " .
"to be implemented by '" . $other->name . "'";
}
}
else {
# NOTE:
- # we need to make sure that the method is
- # not a method modifier, because those do
+ # we need to make sure that the method is
+ # not a method modifier, because those do
# not satisfy the requirements ...
- my $method = $other->get_method($required_method_name);
- # check if it is an override or a generated accessor ..
- (!$method->isa('Moose::Meta::Method::Overriden') &&
- !$method->isa('Class::MOP::Attribute::Accessor'))
- || confess "'" . $self->name . "' requires the method '$required_method_name' " .
- "to be implemented by '" . $other->name . "', the method is only a method modifier";
- # before/after/around methods are a little trickier
- # since we wrap the original local method (if applicable)
- # so we need to check if the original wrapped method is
- # from the same package, and not a wrap of the super method
- if ($method->isa('Class::MOP::Method::Wrapped')) {
- ($method->get_original_method->package_name eq $other->name)
- || confess "'" . $self->name . "' requires the method '$required_method_name' " .
- "to be implemented by '" . $other->name . "', the method is only a method modifier";
- }
+ my $method = $other->find_method_by_name($required_method_name);
+
+ # check if it is a generated accessor ...
+ (!$method->isa('Class::MOP::Method::Accessor'))
+ || confess "'" . $self->name . "' requires the method '$required_method_name' " .
+ "to be implemented by '" . $other->name . "', the method is only an attribute accessor";
+
+ # NOTE:
+ # All other tests here have been removed, they were tests
+ # for overriden methods and before/after/around modifiers.
+ # But we realized that for classes any overriden or modified
+ # methods would be backed by a real method of that name
+ # (and therefore meet the requirement). And for roles, the
+ # overriden and modified methods are "in statis" and so would
+ # not show up in this test anyway (and as a side-effect they
+ # would not fufill the requirement, which is exactly what we
+ # want them to do anyway).
+ # - SL
}
- }
-
+ }
+}
+
+sub _apply_attributes {
+ my ($self, $other) = @_;
foreach my $attribute_name ($self->get_attribute_list) {
# it if it has one already
- if ($other->has_attribute($attribute_name)) {
- # see if we are being composed
+ if ($other->has_attribute($attribute_name) &&
+ # make sure we haven't seen this one already too
+ $other->get_attribute($attribute_name) != $self->get_attribute($attribute_name)) {
+ # see if we are being composed
# into a role or not
if ($other->isa('Moose::Meta::Role')) {
-
- # FIXME:
- # it is possible for these attributes
- # to actually both be from the same
- # origin (some common ancestor role)
- # so we need to find a way to check this
-
- # all attribute conflicts between roles
- # result in an immediate fatal error
- confess "Role '" . $self->name . "' has encountered an attribute conflict " .
+ # all attribute conflicts between roles
+ # result in an immediate fatal error
+ confess "Role '" . $self->name . "' has encountered an attribute conflict " .
"during composition. This is fatal error and cannot be disambiguated.";
}
else {
- # but if this is a class, we
- # can safely skip adding the
+ # but if this is a class, we
+ # can safely skip adding the
# attribute to the class
next;
}
}
else {
- # add it, although it could be overriden
- $other->add_attribute(
- $attribute_name,
- %{$self->get_attribute($attribute_name)}
- );
+ # NOTE:
+ # this is kinda ugly ...
+ if ($other->isa('Moose::Meta::Class')) {
+ $other->_process_attribute(
+ $attribute_name,
+ %{$self->get_attribute($attribute_name)}
+ );
+ }
+ else {
+ $other->add_attribute(
+ $attribute_name,
+ $self->get_attribute($attribute_name)
+ );
+ }
}
}
-
+}
+
+sub _apply_methods {
+ my ($self, $other) = @_;
foreach my $method_name ($self->get_method_list) {
# it if it has one already
if ($other->has_method($method_name) &&
# and if they are not the same thing ...
- $other->get_method($method_name) != $self->get_method($method_name)) {
+ $other->get_method($method_name)->body != $self->get_method($method_name)->body) {
# see if we are composing into a role
- if ($other->isa('Moose::Meta::Role')) {
- # method conflicts between roles result
+ if ($other->isa('Moose::Meta::Role')) {
+ # method conflicts between roles result
# in the method becoming a requirement
$other->add_required_methods($method_name);
# NOTE:
- # we have to remove the method from our
+ # we have to remove the method from our
# role, if this is being called from combine()
# which means the meta is an anon class
- # this *may* cause problems later, but it
- # is probably fairly safe to assume that
+ # this *may* cause problems later, but it
+ # is probably fairly safe to assume that
# anon classes will only be used internally
# or by people who know what they are doing
- $other->_role_meta->remove_method($method_name)
- if $other->_role_meta->name =~ /__ANON__/;
+ $other->Moose::Meta::Class::remove_method($method_name)
+ if $other->name =~ /__COMPOSITE_ROLE_SANDBOX__/;
}
else {
next;
}
}
else {
- # add it, although it could be overriden
+ # add it, although it could be overriden
$other->alias_method(
$method_name,
$self->get_method($method_name)
);
}
- }
-
+ }
+}
+
+sub _apply_override_method_modifiers {
+ my ($self, $other) = @_;
foreach my $method_name ($self->get_method_modifier_list('override')) {
# it if it has one already then ...
if ($other->has_method($method_name)) {
# if it is being composed into another role
- # we have a conflict here, because you cannot
+ # we have a conflict here, because you cannot
# combine an overriden method with a locally
- # defined one
- if ($other->isa('Moose::Meta::Role')) {
- confess "Role '" . $self->name . "' has encountered an 'override' method conflict " .
- "during composition (A local method of the same name as been found). This " .
+ # defined one
+ if ($other->isa('Moose::Meta::Role')) {
+ confess "Role '" . $self->name . "' has encountered an 'override' method conflict " .
+ "during composition (A local method of the same name as been found). This " .
"is fatal error.";
}
else {
- # if it is a class, then we
+ # if it is a class, then we
# just ignore this here ...
next;
}
}
else {
- # if no local method is found, then we
+ # if no local method is found, then we
# must check if we are a role or class
- if ($other->isa('Moose::Meta::Role')) {
- # if we are a role, we need to make sure
- # we dont have a conflict with the role
+ if ($other->isa('Moose::Meta::Role')) {
+ # if we are a role, we need to make sure
+ # we dont have a conflict with the role
# we are composing into
if ($other->has_override_method_modifier($method_name) &&
$other->get_override_method_modifier($method_name) != $self->get_override_method_modifier($method_name)) {
- confess "Role '" . $self->name . "' has encountered an 'override' method conflict " .
- "during composition (Two 'override' methods of the same name encountered). " .
+ confess "Role '" . $self->name . "' has encountered an 'override' method conflict " .
+ "during composition (Two 'override' methods of the same name encountered). " .
"This is fatal error.";
}
- else {
+ else {
# if there is no conflict,
- # just add it to the role
+ # just add it to the role
$other->add_override_method_modifier(
- $method_name,
+ $method_name,
$self->get_override_method_modifier($method_name)
- );
+ );
}
}
else {
- # if this is not a role, then we need to
+ # if this is not a role, then we need to
# find the original package of the method
- # so that we can tell the class were to
+ # so that we can tell the class were to
# find the right super() method
my $method = $self->get_override_method_modifier($method_name);
- my $package = svref_2object($method)->GV->STASH->NAME;
+ my ($package) = Class::MOP::get_code_info($method);
# if it is a class, we just add it
$other->add_override_method_modifier($method_name, $method, $package);
}
}
- }
-
- foreach my $method_name ($self->get_method_modifier_list('before')) {
- $other->add_before_method_modifier(
- $method_name,
- $_
- ) foreach $self->get_before_method_modifiers($method_name);
- }
-
- foreach my $method_name ($self->get_method_modifier_list('after')) {
- $other->add_after_method_modifier(
- $method_name,
- $_
- ) foreach $self->get_after_method_modifiers($method_name);
- }
-
- foreach my $method_name ($self->get_method_modifier_list('around')) {
- $other->add_around_method_modifier(
- $method_name,
- $_
- ) foreach $self->get_around_method_modifiers($method_name);
- }
-
- $other->add_role($self);
+ }
}
-sub combine {
- my ($class, @roles) = @_;
-
- my $combined = $class->new(
- ':role_meta' => Moose::Meta::Class->create_anon_class()
- );
-
- foreach my $role (@roles) {
- $role->apply($combined);
+sub _apply_method_modifiers {
+ my ($self, $modifier_type, $other) = @_;
+ my $add = "add_${modifier_type}_method_modifier";
+ my $get = "get_${modifier_type}_method_modifiers";
+ foreach my $method_name ($self->get_method_modifier_list($modifier_type)) {
+ $other->$add(
+ $method_name,
+ $_
+ ) foreach $self->$get($method_name);
}
-
- $combined->_clean_up_required_methods;
-
- return $combined;
}
-package Moose::Meta::Role::Method;
-
-use strict;
-use warnings;
-
-our $VERSION = '0.01';
+sub _apply_before_method_modifiers { (shift)->_apply_method_modifiers('before' => @_) }
+sub _apply_around_method_modifiers { (shift)->_apply_method_modifiers('around' => @_) }
+sub _apply_after_method_modifiers { (shift)->_apply_method_modifiers('after' => @_) }
+
+#####################################################################
+## NOTE:
+## This is Moose::Meta::Role as defined by Moose (plus the use of
+## MooseX::AttributeHelpers module). It is here as a reference to
+## make it easier to see what is happening above with all the meta
+## programming. - SL
+#####################################################################
+#
+# has 'roles' => (
+# metaclass => 'Collection::Array',
+# reader => 'get_roles',
+# isa => 'ArrayRef[Moose::Meta::Roles]',
+# default => sub { [] },
+# provides => {
+# 'push' => 'add_role',
+# }
+# );
+#
+# has 'excluded_roles_map' => (
+# metaclass => 'Collection::Hash',
+# reader => 'get_excluded_roles_map',
+# isa => 'HashRef[Str]',
+# provides => {
+# # Not exactly set, cause it sets multiple
+# 'set' => 'add_excluded_roles',
+# 'keys' => 'get_excluded_roles_list',
+# 'exists' => 'excludes_role',
+# }
+# );
+#
+# has 'attribute_map' => (
+# metaclass => 'Collection::Hash',
+# reader => 'get_attribute_map',
+# isa => 'HashRef[Str]',
+# provides => {
+# # 'set' => 'add_attribute' # has some special crap in it
+# 'get' => 'get_attribute',
+# 'keys' => 'get_attribute_list',
+# 'exists' => 'has_attribute',
+# # Not exactly delete, cause it sets multiple
+# 'delete' => 'remove_attribute',
+# }
+# );
+#
+# has 'required_methods' => (
+# metaclass => 'Collection::Hash',
+# reader => 'get_required_methods_map',
+# isa => 'HashRef[Str]',
+# provides => {
+# # not exactly set, or delete since it works for multiple
+# 'set' => 'add_required_methods',
+# 'delete' => 'remove_required_methods',
+# 'keys' => 'get_required_method_list',
+# 'exists' => 'requires_method',
+# }
+# );
+#
+# # the before, around and after modifiers are
+# # HASH keyed by method-name, with ARRAY of
+# # CODE refs to apply in that order
+#
+# has 'before_method_modifiers' => (
+# metaclass => 'Collection::Hash',
+# reader => 'get_before_method_modifiers_map',
+# isa => 'HashRef[ArrayRef[CodeRef]]',
+# provides => {
+# 'keys' => 'get_before_method_modifiers',
+# 'exists' => 'has_before_method_modifiers',
+# # This actually makes sure there is an
+# # ARRAY at the given key, and pushed onto
+# # it. It also checks for duplicates as well
+# # 'add' => 'add_before_method_modifier'
+# }
+# );
+#
+# has 'after_method_modifiers' => (
+# metaclass => 'Collection::Hash',
+# reader =>'get_after_method_modifiers_map',
+# isa => 'HashRef[ArrayRef[CodeRef]]',
+# provides => {
+# 'keys' => 'get_after_method_modifiers',
+# 'exists' => 'has_after_method_modifiers',
+# # This actually makes sure there is an
+# # ARRAY at the given key, and pushed onto
+# # it. It also checks for duplicates as well
+# # 'add' => 'add_after_method_modifier'
+# }
+# );
+#
+# has 'around_method_modifiers' => (
+# metaclass => 'Collection::Hash',
+# reader =>'get_around_method_modifiers_map',
+# isa => 'HashRef[ArrayRef[CodeRef]]',
+# provides => {
+# 'keys' => 'get_around_method_modifiers',
+# 'exists' => 'has_around_method_modifiers',
+# # This actually makes sure there is an
+# # ARRAY at the given key, and pushed onto
+# # it. It also checks for duplicates as well
+# # 'add' => 'add_around_method_modifier'
+# }
+# );
+#
+# # override is similar to the other modifiers
+# # except that it is not an ARRAY of code refs
+# # but instead just a single name->code mapping
+#
+# has 'override_method_modifiers' => (
+# metaclass => 'Collection::Hash',
+# reader =>'get_override_method_modifiers_map',
+# isa => 'HashRef[CodeRef]',
+# provides => {
+# 'keys' => 'get_override_method_modifier',
+# 'exists' => 'has_override_method_modifier',
+# 'add' => 'add_override_method_modifier', # checks for local method ..
+# }
+# );
+#
+#####################################################################
-use base 'Class::MOP::Method';
1;
=head1 DESCRIPTION
-Moose's Roles are being actively developed, please see L<Moose::Role>
-for more information. For the most part, this has no user-serviceable
-parts inside. It's API is still subject to some change (although
+Please see L<Moose::Role> for more information about roles.
+For the most part, this has no user-serviceable parts inside
+this module. It's API is still subject to some change (although
probably not that much really).
=head1 METHODS
=item B<get_excluded_roles_map>
+=item B<calculate_all_roles>
+
=back
=over 4
+=item B<method_metaclass>
+
+=item B<find_method_by_name>
+
=item B<get_method>
=item B<has_method>
=item B<get_method_list>
+=item B<get_method_map>
+
+=item B<update_package_cache_flag>
+
+=item B<reset_package_cache_flag>
+
=back
=over 4
=head1 BUGS
-All complex software has bugs lurking in it, and this module is no
+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 COPYRIGHT AND LICENSE
-Copyright 2006 by Infinity Interactive, Inc.
+Copyright 2006, 2007 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
+it under the same terms as Perl itself.
-=cut
\ No newline at end of file
+=cut
projects / gitmo/Moose.git / blobdiff