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|
use 5.008;
use strict;
use warnings;
package Sub::HandlesVia::Toolkit::ObjectPad;
our $AUTHORITY = 'cpan:TOBYINK';
our $VERSION = '0.052000';
use Sub::HandlesVia::Mite -all;
extends 'Sub::HandlesVia::Toolkit';
around code_generator_for_attribute => sub {
my ( $next, $me, $target, $attr ) = ( shift, shift, @_ );
if ( @$attr > 1 or $attr->[0] =~ /^\w/ ) {
return $me->$next( @_ );
}
my $attrname = $attr->[0];
use Object::Pad qw( :experimental(mop) );
use Object::Pad::MetaFunctions ();
my $metaclass = Object::Pad::MOP::Class->for_class($target);
my $metafield = $metaclass->get_field( $attrname );
my ( $get, $set, $slot, $get_is_lvalue );
if ( $attrname =~ /^\$/ ) {
$get = sub {
my ( $gen ) = ( shift );
sprintf( '$metafield->value(%s)', $gen->generate_self );
};
$set = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( '( $metafield->value(%s) = %s )', $gen->generate_self, $value );
};
$slot = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( '${ Object::Pad::MetaFunctions::ref_field(%s, %s) }', B::perlstring($attrname), $gen->generate_self );
};
$get_is_lvalue = false;
}
elsif ( $attrname =~ /^\@/ ) {
$get = sub {
my ( $gen ) = ( shift );
sprintf( 'Object::Pad::MetaFunctions::ref_field(%s, %s)', B::perlstring($attrname), $gen->generate_self );
};
$set = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( '( @{Object::Pad::MetaFunctions::ref_field(%s, %s)} = @{%s} )', B::perlstring($attrname), $gen->generate_self, $value );
};
$slot = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( 'Object::Pad::MetaFunctions::ref_field(%s, %s)', B::perlstring($attrname), $gen->generate_self );
};
$get_is_lvalue = true;
}
elsif ( $attrname =~ /^\%/ ) {
$get = sub {
my ( $gen ) = ( shift );
sprintf( 'Object::Pad::MetaFunctions::ref_field(%s, %s)', B::perlstring($attrname), $gen->generate_self );
};
$set = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( '( %%{Object::Pad::MetaFunctions::ref_field(%s, %s)} = %%{%s} )', B::perlstring($attrname), $gen->generate_self, $value );
};
$slot = sub {
my ( $gen, $value ) = ( shift, @_ );
sprintf( 'Object::Pad::MetaFunctions::ref_field(%s, %s)', B::perlstring($attrname), $gen->generate_self );
};
$get_is_lvalue = true;
}
else {
croak 'Unexpected name for Object::Pad attribute: %s', $attr;
}
require Sub::HandlesVia::CodeGenerator;
return 'Sub::HandlesVia::CodeGenerator'->new(
toolkit => $me,
target => $target,
attribute => $attrname,
env => { '$metafield' => \$metafield },
method_installer => sub { $metaclass->add_method( @_ ) }, # compile-time!
coerce => false,
generator_for_get => $get,
generator_for_set => $set,
generator_for_slot => $slot,
get_is_lvalue => $get_is_lvalue,
set_checks_isa => true,
set_strictly => false,
generator_for_default => sub {
my ( $gen, $handler ) = @_ or die;
return;
},
);
};
1;
|
