use strict;
use warnings;

package Test::Deep::Shallow;

use Test::Deep::Cmp;

use Scalar::Util qw( refaddr );

sub init
{
  my $self = shift;

  my $val = shift;
  $self->{val} = $val;
}

sub descend
{
  my $self = shift;

  my $got = shift;
  my $exp = $self->{val};

  my $ok;

  if (!defined $got and !defined $exp)
  {
    $ok = 1;
  }
  elsif (defined $got xor defined $exp)
  {
    $ok = 0;
  }
  elsif (ref $got and ref $exp)
  {
    $ok = refaddr($got) == refaddr($exp);
  }
  elsif (ref $got xor ref $exp)
  {
    $ok = 0;
  }
  else
  {
    $ok = $got eq $exp;
  }

  return $ok;
}

1;