File Coverage

blib/lib/UNIVERSAL/ref.pm

Criterion	Covered	Total	%
statement	38	40	95.0
branch	7	8	87.5
condition			n/a
subroutine	11	12	91.6
pod			n/a
total	56	60	93.3

package UNIVERSAL::ref;
BEGIN {
  $UNIVERSAL::ref::VERSION = '0.14';
}
use strict;
use warnings;
use B::Utils;

our @hooked;
our @needs_truth = qw(overload);

sub import {
    my $class = caller;
    my %unique;
    @hooked = grep { !$unique{$_}++ } ( @hooked, $class );
}

sub unimport {
    my $class = caller;
    @hooked = grep $_ ne $class, @hooked;
}

my $DOES;
BEGIN { $DOES = UNIVERSAL->can('DOES') ? 'DOES' : 'isa' }

sub _hook {

    # Below, you'll see that there is special dispensation for never
    # hooking the function named UNIVERSAL::ref::_hook. That's why this
    # ref() is safe from predation by this module.

    # Is this object asserting that it is an ancestor of any hooked class?
    my $is_hooked;
    my $obj_class    = CORE::ref $_[0];
    my $caller_class = caller;

    # For any special classes needing truth, just return if we've got
    # any of those.
    for my $class (@needs_truth) {
        if ( $caller_class->$DOES($class) ) {

            # CORE::ref
            return $obj_class;
        }
    }

    #
    for my $hooked_class (@hooked) {

        # Find only hooked ancestries that pertain this object.
        next unless $obj_class->$DOES($hooked_class);

        # Check that the call wasn't made from within this object's
        # ancestry. It has to be possible for an object to ask
        # questions about itself without getting lies.
        next if $obj_class->$DOES($caller_class);

        return $_[0]->ref;
    }

    # CORE::ref
    return $obj_class;
}

use XSLoader;
$| = 1;
XSLoader::load( 'UNIVERSAL::ref', $UNIVERSAL::ref::VERSION );

use B 'svref_2object';
use B::Utils 'all_roots';
my %roots = all_roots();
for my $nm ( sort keys %roots ) {
    my $op = $roots{$nm};

    next unless $$op;
    next if $nm eq 'UNIVERSAL::ref::_hook';

    if ( defined &$nm ) {
        my $cv = svref_2object( \&$nm );
        next unless ${ $cv->ROOT };
        next unless ${ $cv->START };
    }

    _fixupop($op);
}

no warnings;
q[Let's Make Love and Listen to Death From Above];

__END__