package Moose::Meta::Attribute::Native::Trait;
use Moose::Role;
+
+use List::MoreUtils qw( any uniq );
use Moose::Util::TypeConstraints;
+use Moose::Deprecated;
-our $VERSION = '0.93';
-$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
requires '_helper_type';
-# these next two are the possible methods you can use in the 'handles'
-# map.
-
-# provide a Class or Role which we can collect the method providers
-# from
-
-# or you can provide a HASH ref of anon subs yourself. This will also
-# collect and store the methods from a method_provider as well
-has 'method_constructors' => (
- is => 'ro',
- isa => 'HashRef',
- lazy => 1,
- default => sub {
- my $self = shift;
- return +{} unless $self->has_method_provider;
- # or grab them from the role/class
- my $method_provider = $self->method_provider->meta;
- return +{
- map {
- $_ => $method_provider->get_method($_)
- } $method_provider->get_method_list
- };
- },
+has _used_default_is => (
+ is => 'rw',
+ isa => 'Bool',
+ default => 0,
);
-has '+default' => ( required => 1 );
-has '+type_constraint' => ( required => 1 );
-
-# methods called prior to instantiation
-
before '_process_options' => sub {
my ( $self, $name, $options ) = @_;
$self->_check_helper_type( $options, $name );
- $options->{is} = $self->_default_is
- if ! exists $options->{is} && $self->can('_default_is');
+ if ( !( any { exists $options->{$_} } qw( is reader writer accessor ) )
+ && $self->can('_default_is') ) {
+
+ $options->{is} = $self->_default_is;
+
+ $options->{_used_default_is} = 1;
+ }
- $options->{default} = $self->_default_default
- if ! exists $options->{default} && $self->can('_default_default');
+ if (
+ !(
+ $options->{required}
+ || any { exists $options->{$_} } qw( default builder lazy_build )
+ )
+ && $self->can('_default_default')
+ ) {
+
+ $options->{default} = $self->_default_default;
+
+ Moose::Deprecated::deprecated(
+ feature => 'default default for Native Trait',
+ message =>
+ 'Allowing a native trait to automatically supply a default is deprecated.'
+ . ' You can avoid this warning by supplying a default, builder, or making the attribute required'
+ );
+ }
};
+after 'install_accessors' => sub {
+ my $self = shift;
+
+ return unless $self->_used_default_is;
+
+ my @methods
+ = $self->_default_is eq 'rw'
+ ? qw( reader writer accessor )
+ : 'reader';
+
+ my $name = $self->name;
+ my $class = $self->associated_class->name;
+
+ for my $meth ( uniq grep {defined} map { $self->$_ } @methods ) {
+
+ my $message
+ = "The $meth method in the $class class was automatically created"
+ . " by the native delegation trait for the $name attribute."
+ . q{ This "default is" feature is deprecated.}
+ . q{ Explicitly set "is" or define accessor names to avoid this};
+
+ $self->associated_class->add_before_method_modifier(
+ $meth => sub {
+ Moose::Deprecated::deprecated(
+ feature => 'default is for Native Trait',
+ message =>$message,
+ );
+ }
+ );
+ }
+ };
+
sub _check_helper_type {
my ( $self, $options, $name ) = @_;
"The type constraint for $name must be a subtype of $type but it's a $isa";
}
+before 'install_accessors' => sub { (shift)->_check_handles_values };
+
+sub _check_handles_values {
+ my $self = shift;
+
+ my %handles = $self->_canonicalize_handles;
+
+ for my $original_method ( values %handles ) {
+ my $name = $original_method->[0];
+
+ my $accessor_class = $self->_native_accessor_class_for($name);
+
+ ( $accessor_class && $accessor_class->can('new') )
+ || confess
+ "$name is an unsupported method type - $accessor_class";
+ }
+}
+
around '_canonicalize_handles' => sub {
- my $next = shift;
+ shift;
my $self = shift;
my $handles = $self->handles;
unless ( 'HASH' eq ref $handles ) {
$self->throw_error(
- "The 'handles' option must be a HASH reference, not $handles" );
+ "The 'handles' option must be a HASH reference, not $handles");
}
return map {
} keys %$handles;
};
-# methods called after instantiation
-
-before 'install_accessors' => sub { (shift)->_check_handles_values };
-
-sub _check_handles_values {
- my $self = shift;
-
- my $method_constructors = $self->method_constructors;
-
- my %handles = $self->_canonicalize_handles;
-
- for my $original_method ( values %handles ) {
- my $name = $original_method->[0];
- ( exists $method_constructors->{$name} )
- || confess "$name is an unsupported method type";
- }
-
-}
-
around '_make_delegation_method' => sub {
my $next = shift;
my ( $self, $handle_name, $method_to_call ) = @_;
my ( $name, @curried_args ) = @$method_to_call;
- my $method_constructors = $self->method_constructors;
+ my $accessor_class = $self->_native_accessor_class_for($name);
- my $code = $method_constructors->{$name}->(
- $self,
- $self->get_read_method_ref,
- $self->get_write_method_ref,
- );
+ die "Cannot find an accessor class for $name"
+ unless $accessor_class && $accessor_class->can('new');
- return $next->(
- $self,
- $handle_name,
- sub {
- my $instance = shift;
- return $code->( $instance, @curried_args, @_ );
- },
+ return $accessor_class->new(
+ name => $handle_name,
+ package_name => $self->associated_class->name,
+ delegate_to_method => $name,
+ attribute => $self,
+ is_inline => 1,
+ curried_arguments => \@curried_args,
+ root_types => [ $self->_root_types ],
);
};
-no Moose::Role;
-no Moose::Util::TypeConstraints;
-
-1;
-
-__END__
-
-=head1 NAME
+sub _root_types {
+ return $_[0]->_helper_type;
+}
-Moose::Meta::Attribute::Native::Trait - Base role for helpers
+sub _native_accessor_class_for {
+ my ( $self, $suffix ) = @_;
+
+ my $role
+ = 'Moose::Meta::Method::Accessor::Native::'
+ . $self->_native_type . '::'
+ . $suffix;
+
+ Class::MOP::load_class($role);
+ return Moose::Meta::Class->create_anon_class(
+ superclasses =>
+ [ $self->accessor_metaclass, $self->delegation_metaclass ],
+ roles => [$role],
+ cache => 1,
+ )->name;
+}
-=head1 BUGS
+sub _build_native_type {
+ my $self = shift;
-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.
+ for my $role_name ( map { $_->name } $self->meta->calculate_all_roles ) {
+ return $1 if $role_name =~ /::Native::Trait::(\w+)$/;
+ }
-=head1 SEE ALSO
+ die "Cannot calculate native type for " . ref $self;
+}
-Documentation for Moose native traits starts at L<Moose::Meta::Attribute Native>
+has '_native_type' => (
+ is => 'ro',
+ isa => 'Str',
+ lazy => 1,
+ builder => '_build_native_type',
+);
-=head1 AUTHORS
+no Moose::Role;
+no Moose::Util::TypeConstraints;
-Yuval Kogman
+1;
-Shawn M Moore
+# ABSTRACT: Shared role for native delegation traits
-Jesse Luehrs
+__END__
-=head1 COPYRIGHT AND LICENSE
+=head1 BUGS
-Copyright 2007-2009 by Infinity Interactive, Inc.
+See L<Moose/BUGS> for details on reporting bugs.
-L<http://www.iinteractive.com>
+=head1 SEE ALSO
-This library is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
+Documentation for Moose native traits can be found in
+L<Moose::Meta::Attribute::Native>.
=cut
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