error if we have a lazy attr with no default or builder

[gitmo/Moose.git] / lib / Moose / Meta / Method / Accessor / Native / Array / shift.pm

package Moose::Meta::Method::Accessor::Native::Array::shift;

use strict;
use warnings;

our $VERSION = '1.19';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';

use Moose::Role;

with 'Moose::Meta::Method::Accessor::Native::Array::Writer' => {
    -excludes => [
        qw(
            _maximum_arguments
            _inline_capture_return_value
            _optimized_set_new_value
            _return_value
            )
    ]
};

sub _maximum_arguments { 0 }

sub _adds_members { 0 }

sub _potential_value {
    my $self = shift;
    my ($slot_access) = @_;

    return '[ @{ (' . $slot_access . ') } > 1 '
             . '? @{ (' . $slot_access . ') }[1..$#{ (' . $slot_access . ') }] '
             . ': () ]';
}

sub _inline_capture_return_value {
    my $self = shift;
    my ($slot_access) = @_;

    return 'my $old = ' . $slot_access . '->[0];';
}

sub _optimized_set_new_value {
    my $self = shift;
    my ($inv, $new, $slot_access) = @_;

    return 'shift @{ (' . $slot_access . ') }';
}

sub _return_value {
    my $self = shift;
    my ($slot_access) = @_;

    return '$old';
}

no Moose::Role;

1;