package Memoize::ExpireTest;

=head1 NAME

Memoize::ExpireTest - test for Memoize expiration semantics

=head1 DESCRIPTION

This module is just for testing expiration semantics.  It's not a very
good example of how to write an expiration module.

If you are looking for an example, I recommend that you look at the
simple example in the Memoize::Expire documentation, or at the code
for Memoize::Expire itself.

If you have questions, I will be happy to answer them if you send them
to mjd-perl-memoize+@plover.com.

=cut

$VERSION = '1.03';
my %cache;

sub TIEHASH {
  my ($pack) = @_;
  bless \%cache => $pack;
}

sub EXISTS {
  my ($cache, $key) = @_;
  exists $cache->{$key} ? 1 : 0;
}

sub FETCH {
  my ($cache, $key) = @_;
  $cache->{$key};
}

sub STORE {
  my ($cache, $key, $val) = @_;
  $cache->{$key} = $val;
}

sub expire {
  my ($key) = @_;
  delete $cache{$key};
}

1;
