From 112e56b0bd5e6a6aff3c1d513ad7d0c528e899f7 Mon Sep 17 00:00:00 2001 From: Jesse Luehrs Date: Mon, 10 Oct 2011 12:23:03 -0500 Subject: split this out, so we can have attributes that aren't services --- lib/Bread/Board/Declare/Meta/Role/Attribute.pm | 294 ++----------------------- 1 file changed, 18 insertions(+), 276 deletions(-) (limited to 'lib/Bread/Board/Declare/Meta/Role/Attribute.pm') diff --git a/lib/Bread/Board/Declare/Meta/Role/Attribute.pm b/lib/Bread/Board/Declare/Meta/Role/Attribute.pm index 0fddfca..2caeed4 100644 --- a/lib/Bread/Board/Declare/Meta/Role/Attribute.pm +++ b/lib/Bread/Board/Declare/Meta/Role/Attribute.pm @@ -1,291 +1,33 @@ package Bread::Board::Declare::Meta::Role::Attribute; use Moose::Role; -Moose::Util::meta_attribute_alias('Service'); -# ABSTRACT: attribute metarole for Bread::Board::Declare -use Bread::Board::Types; -use List::MoreUtils qw(any); +use List::MoreUtils 'any'; +use Moose::Util 'does_role', 'find_meta'; -use Bread::Board::Declare::BlockInjection; -use Bread::Board::Declare::ConstructorInjection; -use Bread::Board::Declare::Literal; - -=head1 DESCRIPTION - -This role adds functionality to the attribute metaclass for -L objects. - -=cut - -=attr service - -Whether or not to create a service for this attribute. Defaults to true. - -=cut - -has service => ( - is => 'ro', - isa => 'Bool', - default => 1, -); - -=attr block - -The block to use when creating a L service. - -=cut - -has block => ( - is => 'ro', - isa => 'CodeRef', - predicate => 'has_block', -); - -=attr literal_value - -The value to use when creating a L service. Note that -the parameter that should be passed to C is C. - -=cut - -# has_value is already a method -has literal_value => ( - is => 'ro', - isa => 'Value', - init_arg => 'value', - predicate => 'has_literal_value', -); - -=attr lifecycle - -The lifecycle to use when creating the service. See L -and L. - -=cut - -has lifecycle => ( - is => 'ro', - isa => 'Str', - predicate => 'has_lifecycle', -); - -=attr dependencies - -The dependency specification to use when creating the service. See -L. - -=cut - -has dependencies => ( - is => 'ro', - isa => 'Bread::Board::Service::Dependencies', - coerce => 1, - predicate => 'has_dependencies', -); - -=attr parameters - -The parameter specification to use when creating the service. See L. - -=cut - -has parameters => ( - is => 'ro', - isa => 'Bread::Board::Service::Parameters', - coerce => 1, - predicate => 'has_parameters', -); - -=attr infer - -If true, the dependency list will be inferred as much as possible from the -attributes in the class. See L for -more information. Note that this is only valid for constructor injection -services. - -=cut - -has infer => ( - is => 'ro', - isa => 'Bool', -); - -=attr constructor_name - -The constructor name to use when creating L -services. Defaults to C. - -=cut - -has constructor_name => ( - is => 'ro', - isa => 'Str', - predicate => 'has_constructor_name', -); - -=attr associated_service - -The service object that is associated with this attribute. - -=cut - -has associated_service => ( - is => 'rw', - does => 'Bread::Board::Service', - predicate => 'has_associated_service', -); - -after attach_to_class => sub { - my $self = shift; - - return unless $self->service; - - my %params = ( - associated_attribute => $self, - name => $self->name, - ($self->has_lifecycle - ? (lifecycle => $self->lifecycle) - : ()), - ($self->has_dependencies - ? (dependencies => $self->dependencies) - : ()), - ($self->has_parameters - ? (parameters => $self->parameters) - : ()), - ($self->has_constructor_name - ? (constructor_name => $self->constructor_name) - : ()), - ); - - my $tc = $self->has_type_constraint ? $self->type_constraint : undef; - - my $service; - if ($self->has_block) { - if ($tc && $tc->isa('Moose::Meta::TypeConstraint::Class')) { - %params = (%params, class => $tc->class); - Class::MOP::load_class($tc->class); - } - $service = Bread::Board::Declare::BlockInjection->new( - %params, - block => $self->block, - ); - } - elsif ($self->has_literal_value) { - $service = Bread::Board::Declare::Literal->new( - %params, - value => $self->literal_value, - ); - } - elsif ($tc && $tc->isa('Moose::Meta::TypeConstraint::Class')) { - Class::MOP::load_class($tc->class); - $service = Bread::Board::Declare::ConstructorInjection->new( - %params, - class => $tc->class, - ); - } - else { - $service = Bread::Board::Declare::BlockInjection->new( - %params, - block => sub { - die "Attribute " . $self->name . " did not specify a service." - . " It must be given a value through the constructor or" - . " writer method before it can be resolved." - }, - ); - } - - $self->associated_service($service) if $service; -}; - -after _process_options => sub { - my $class = shift; - my ($name, $opts) = @_; - - return unless exists $opts->{default} - || exists $opts->{builder}; - return unless exists $opts->{class} - || exists $opts->{block} - || exists $opts->{value}; - - # XXX: uggggh - return if any { $_ eq 'Moose::Meta::Attribute::Native::Trait::String' - || $_ eq 'Moose::Meta::Attribute::Native::Trait::Counter' } - @{ $opts->{traits} }; - - my $exists = exists($opts->{default}) ? 'default' : 'builder'; - die "$exists is not valid when Bread::Board service options are set"; -}; - -around get_value => sub { +# this is kinda gross, but it's the only way to hook in at the right place +# at the moment, it seems +around interpolate_class => sub { my $orig = shift; - my $self = shift; - my ($instance) = @_; + my $class = shift; + my ($options) = @_; - return $self->$orig($instance) - if $self->has_value($instance); + # we only want to do this on the final recursive call + return $class->$orig(@_) + if $options->{metaclass}; - my $val = $instance->get_service($self->name)->get; + my ($new_class, @traits) = $class->$orig(@_); - if ($self->has_type_constraint) { - $val = $self->type_constraint->coerce($val) - if $self->should_coerce; + return wantarray ? ($new_class, @traits) : $new_class + if does_role($new_class, 'Bread::Board::Declare::Meta::Role::Attribute::Service'); - $self->verify_against_type_constraint($val, instance => $instance); - } + my $parent = @traits + ? (find_meta($new_class)->superclasses)[0] + : $new_class; + push @{ $options->{traits} }, 'Bread::Board::Declare::Meta::Role::Attribute::Service'; - if ($self->should_auto_deref) { - if (ref($val) eq 'ARRAY') { - return wantarray ? @$val : $val; - } - elsif (ref($val) eq 'HASH') { - return wantarray ? %$val : $val; - } - else { - die "Can't auto_deref $val."; - } - } - else { - return $val; - } + return $parent->interpolate_class($options); }; -if (Moose->VERSION > 1.9900) { - around _inline_instance_get => sub { - my $orig = shift; - my $self = shift; - my ($instance) = @_; - return 'do {' . "\n" - . 'my $val;' . "\n" - . 'if (' . $self->_inline_instance_has($instance) . ') {' . "\n" - . '$val = ' . $self->$orig($instance) . ';' . "\n" - . '}' . "\n" - . 'else {' . "\n" - . '$val = ' . $instance . '->get_service(\'' . $self->name . '\')->get;' . "\n" - . join("\n", $self->_inline_check_constraint( - '$val', - '$type_constraint', - (Moose->VERSION >= 2.0100 - ? '$type_message' - : '$type_constraint_obj'), - )) . "\n" - . '}' . "\n" - . '$val' . "\n" - . '}'; - }; -} -else { - around accessor_metaclass => sub { - my $orig = shift; - my $self = shift; - - return Moose::Meta::Class->create_anon_class( - superclasses => [ $self->$orig(@_) ], - roles => [ 'Bread::Board::Declare::Meta::Role::Accessor' ], - cache => 1 - )->name; - }; -} - no Moose::Role; 1; -- cgit v1.2.3-54-g00ecf