File Coverage

blib/lib/IPC/PrettyPipe/Queue.pm

Criterion	Covered	Total	%
statement	20	22	90.9
branch	3	4	75.0
condition			n/a
subroutine	4	5	80.0
pod	3	3	100.0
total	30	34	88.2

package IPC::PrettyPipe::Queue;

# ABSTRACT: A simple queue

use Moo;

our $VERSION = '0.12';

use namespace::clean;


has elements => (
    is       => 'ro',
    init_arg => undef,
    default  => sub { [] },
);

sub empty { !!!@{ $_[0]->elements } }

sub nelements { scalar @{ $_[0]->elements } }

sub push {

    my ( $self, $elem ) = ( shift, shift );

    die( "incompatible element\n" )
      unless $elem->does( 'IPC::PrettyPipe::Queue::Element' );

    my $elements = $self->elements;

    if ( @$elements ) {
        ## no critic (ProhibitAccessOfPrivateData)
        $elements->[-1]->_set_last( 0 );
        $elem->_set_last( 1 );
        $elem->_set_first( 0 );
    }
    else {

        $elem->_set_last( 1 );
        $elem->_set_first( 1 );

    }

    push @{$elements}, $elem;

    return;
}

1;

#
# This file is part of IPC-PrettyPipe
#
# This software is Copyright (c) 2018 by Smithsonian Astrophysical Observatory.
#
# This is free software, licensed under:
#
#   The GNU General Public License, Version 3, June 2007
#

__END__