File Coverage

blib/lib/Iterator/Flex/Role/Freeze.pm

Criterion	Covered	Total	%
statement	40	41	97.5
branch	3	4	75.0
condition			n/a
subroutine	11	11	100.0
pod	1	1	100.0
total	55	57	96.4

package Iterator::Flex::Role::Freeze;

# ABSTRACT: Role to add serialization capability to an Iterator::Flex::Base

use v5.28;
use strict;
use warnings;

our $VERSION = '0.34';

use List::Util;

use Iterator::Flex::Utils
  qw( :default REG_ITERATOR REG_ITER__DEPENDS REG_ITER_FREEZE throw_failure );
use Iterator::Flex::Base;
use Role::Tiny;
use experimental 'signatures';

use namespace::clean;










sub freeze ( $obj ) {

    my $ipar = $REGISTRY{ refaddr $obj }[REG_ITERATOR];

    my @freeze;

    if ( defined $ipar->[REG_ITER__DEPENDS] ) {

        # first check if dependencies can freeze.
        my $cant = List::Util::first { !$_->can( 'freeze' ) }
        @{ $ipar->[REG_ITER__DEPENDS] };
        throw_failure( parameter => "dependency: @{[ $cant->_name ]} is not serializable" )
          if $cant;

        # now freeze them
        @freeze = map $_->freeze, @{ $ipar->[REG_ITER__DEPENDS] };
    }

    push @freeze, $ipar->[REG_ITER_FREEZE]->( $obj ), $obj->is_exhausted;

    return \@freeze;
}

requires 'is_exhausted';

1;

#
# This file is part of Iterator-Flex
#
# 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__