Commit | Line | Data |
a0cb3900 |
1 | |
2 | package Memoize::Storable; |
3 | use Storable (); |
4 | $Verbose = 0; |
5 | |
6 | sub TIEHASH { |
7 | require Carp if $Verbose; |
8 | my $package = shift; |
9 | my $filename = shift; |
10 | my $truehash = (-e $filename) ? Storable::retrieve($filename) : {}; |
11 | my %options; |
12 | print STDERR "Memoize::Storable::TIEHASH($filename, @_)\n" if $Verbose; |
13 | @options{@_} = (); |
14 | my $self = |
15 | {FILENAME => $filename, |
16 | H => $truehash, |
17 | OPTIONS => \%options |
18 | }; |
19 | bless $self => $package; |
20 | } |
21 | |
22 | sub STORE { |
23 | require Carp if $Verbose; |
24 | my $self = shift; |
25 | print STDERR "Memoize::Storable::STORE(@_)\n" if $Verbose; |
26 | $self->{H}{$_[0]} = $_[1]; |
27 | } |
28 | |
29 | sub FETCH { |
30 | require Carp if $Verbose; |
31 | my $self = shift; |
32 | print STDERR "Memoize::Storable::FETCH(@_)\n" if $Verbose; |
33 | $self->{H}{$_[0]}; |
34 | } |
35 | |
36 | sub EXISTS { |
37 | require Carp if $Verbose; |
38 | my $self = shift; |
39 | print STDERR "Memoize::Storable::EXISTS(@_)\n" if $Verbose; |
40 | exists $self->{H}{$_[0]}; |
41 | } |
42 | |
43 | sub DESTROY { |
44 | require Carp if $Verbose; |
45 | my $self= shift; |
46 | print STDERR "Memoize::Storable::DESTROY(@_)\n" if $Verbose; |
47 | if ($self->{OPTIONS}{'nstore'}) { |
48 | Storable::nstore($self->{H}, $self->{FILENAME}); |
49 | } else { |
50 | Storable::store($self->{H}, $self->{FILENAME}); |
51 | } |
52 | } |
53 | |
54 | sub FIRSTKEY { |
55 | 'Fake hash from Memoize::Storable'; |
56 | } |
57 | |
58 | sub NEXTKEY { |
59 | undef; |
60 | } |
61 | 1; |