File Coverage

blib/lib/Iterator/Flex/Role/Wrap/Self.pm

Criterion	Covered	Total	%
statement	23	34	67.6
branch			n/a
condition			n/a
subroutine	8	10	80.0
pod			n/a
total	31	44	70.4

package Iterator::Flex::Role::Wrap::Self;

# ABSTRACT: Construct a next() method for a coderef which expects to be passed an object ref

# is this actually used?

use v5.28;
use strict;
use warnings;

our $VERSION = '0.33';

use Scalar::Util;
use Iterator::Flex::Utils 'NEXT';

use Role::Tiny;
use experimental 'signatures';

use namespace::clean;

sub _construct_next ( $, $ipar, $ ) {

    # ensure we don't hold any strong references in the subroutine
    my $next = $ipar->{ +NEXT };
    Scalar::Util::weaken $next;

    my $sub;
    $sub = sub { $next->( $sub ) };

    # create a second reference to the subroutine before we weaken $sub,
    # otherwise $sub will lose its contents, as it would be the only
    # reference.
    my $rsub = $sub;
    Scalar::Util::weaken( $sub );
    return $rsub;
}

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__