use strict;
use warnings;

package Test::Deep::Cache;

use Test::Deep::Cache::Simple;

sub new
{
  my $pkg = shift;

  my $self = bless {}, $pkg;

  $self->{expects} = [Test::Deep::Cache::Simple->new];
  $self->{normal} = [Test::Deep::Cache::Simple->new];

  $self->local;

  return $self;
}

sub add
{
  my $self = shift;

  my $type = $self->type;

  $self->{$type}->[-1]->add(@_);
}

sub cmp
{
  # go through all the caches to see if we know this one

  my $self = shift;

  my $type = $self->type;

  foreach my $cache (@{$self->{$type}})
  {
    return 1 if $cache->cmp(@_);
  }

  return 0
}

sub local
{
  my $self = shift;

  foreach my $type (qw( expects normal ))
  {
    push(@{$self->{$type}}, Test::Deep::Cache::Simple->new);
  }
}

sub finish
{
  my $self = shift;

  my $keep = shift;

  foreach my $type (qw( expects normal ))
  {
    my $caches = $self->{$type};

    my $last = pop @$caches;

    $caches->[-1]->absorb($last) if $keep;
  }
}

sub type
{
  return $Test::Deep::Expects ? "expects" : "normal";
}

1;