#!./perl
#
#  Copyright (c) 1995-2000, Raphael Manfredi
#  
#  You may redistribute only under the same terms as Perl 5, as specified
#  in the README file that comes with the distribution.
#

sub BEGIN {
    unshift @INC, 't';
    unshift @INC, 't/compat' if $] < 5.006002;
    require Config; import Config;
    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
        print "1..0 # Skip: Storable was not built\n";
        exit 0;
    }
    require 'st-dump.pl';
}

use Storable qw(freeze thaw);

$Storable::flags = Storable::FLAGS_COMPAT;

use Test::More tests => 28;

($scalar_fetch, $array_fetch, $hash_fetch) = (0, 0, 0);

package TIED_HASH;

sub TIEHASH {
	my $self = bless {}, shift;
	return $self;
}

sub FETCH {
	my $self = shift;
	my ($key) = @_;
	$main::hash_fetch++;
	return $self->{$key};
}

sub STORE {
	my $self = shift;
	my ($key, $value) = @_;
	$self->{$key} = $value;
}

sub FIRSTKEY {
	my $self = shift;
	scalar keys %{$self};
	return each %{$self};
}

sub NEXTKEY {
	my $self = shift;
	return each %{$self};
}

sub STORABLE_freeze {
	my $self = shift;
	$main::hash_hook1++;
	return join(":", keys %$self) . ";" . join(":", values %$self);
}

sub STORABLE_thaw {
	my ($self, $cloning, $frozen) = @_;
	my ($keys, $values) = split(/;/, $frozen);
	my @keys = split(/:/, $keys);
	my @values = split(/:/, $values);
	for (my $i = 0; $i < @keys; $i++) {
		$self->{$keys[$i]} = $values[$i];
	}
	$main::hash_hook2++;
}

package TIED_ARRAY;

sub TIEARRAY {
	my $self = bless [], shift;
	return $self;
}

sub FETCH {
	my $self = shift;
	my ($idx) = @_;
	$main::array_fetch++;
	return $self->[$idx];
}

sub STORE {
	my $self = shift;
	my ($idx, $value) = @_;
	$self->[$idx] = $value;
}

sub FETCHSIZE {
	my $self = shift;
	return @{$self};
}

sub STORABLE_freeze {
	my $self = shift;
	$main::array_hook1++;
	return join(":", @$self);
}

sub STORABLE_thaw {
	my ($self, $cloning, $frozen) = @_;
	@$self = split(/:/, $frozen);
	$main::array_hook2++;
}

package TIED_SCALAR;

sub TIESCALAR {
	my $scalar;
	my $self = bless \$scalar, shift;
	return $self;
}

sub FETCH {
	my $self = shift;
	$main::scalar_fetch++;
	return $$self;
}

sub STORE {
	my $self = shift;
	my ($value) = @_;
	$$self = $value;
}

sub STORABLE_freeze {
	my $self = shift;
	$main::scalar_hook1++;
	return $$self;
}

sub STORABLE_thaw {
	my ($self, $cloning, $frozen) = @_;
	$$self = $frozen;
	$main::scalar_hook2++;
}

package main;

$a = 'toto';
$b = \$a;

$c = tie %hash, TIED_HASH;
$d = tie @array, TIED_ARRAY;
tie $scalar, TIED_SCALAR;

$scalar = 'foo';
$hash{'attribute'} = 'plain value';
$array[0] = \$scalar;
$array[1] = $c;
$array[2] = \@array;
$array[3] = "plaine scalaire";

@tied = (\$scalar, \@array, \%hash);
%a = ('key', 'value', 1, 0, $a, $b, 'cvar', \$a, 'scalarref', \$scalar);
@a = ('first', 3, -4, -3.14159, 456, 4.5, $d, \$d,
	$b, \$a, $a, $c, \$c, \%a, \@array, \%hash, \@tied);

my $f = freeze(\@a);
isnt($f, undef);
$dumped = &dump(\@a);
isnt($dumped, undef);

$root = thaw($f);
isnt($root, undef);

$got = &dump($root);
isnt($got, undef);

isnt($got, $dumped);		# our hooks did not handle refs in array

$g = freeze($root);
is(length $f, length $g);

# Ensure the tied items in the retrieved image work
@old = ($scalar_fetch, $array_fetch, $hash_fetch);
@tied = ($tscalar, $tarray, $thash) = @{$root->[$#{$root}]};
@type = qw(SCALAR  ARRAY  HASH);

is(ref tied $$tscalar, 'TIED_SCALAR');
is(ref tied @$tarray, 'TIED_ARRAY');
is(ref tied %$thash, 'TIED_HASH');

@new = ($$tscalar, $tarray->[0], $thash->{'attribute'});
@new = ($scalar_fetch, $array_fetch, $hash_fetch);

# Tests 10..15
for ($i = 0; $i < @new; $i++) {
    is($new[$i], $old[$i] + 1);		# Tests 10,12,14
    is(ref $tied[$i], $type[$i]);	# Tests 11,13,15
}

is($$tscalar, 'foo');
is($tarray->[3], 'plaine scalaire');
is($thash->{'attribute'}, 'plain value');

# Ensure hooks were called
is($scalar_hook1, 2);
is($scalar_hook2, 1);
is($array_hook1, 2);
is($array_hook2, 1);
is($hash_hook1, 2);
is($hash_hook2, 1);

#
# And now for the "blessed ref to tied hash" with "store hook" test...
#

my $bc = bless \%hash, 'FOO';		# FOO does not exist -> no hook
my $bx = thaw freeze $bc;

is(ref $bx, 'FOO');
my $old_hash_fetch = $hash_fetch;
my $v = $bx->{attribute};
is($hash_fetch, $old_hash_fetch + 1, 'Still tied');

package TIED_HASH_REF;


sub STORABLE_freeze {
        my ($self, $cloning) = @_;
        return if $cloning;
        return('ref lost');
}

sub STORABLE_thaw {
        my ($self, $cloning, $data) = @_;
        return if $cloning;
}

package main;

$bc = bless \%hash, 'TIED_HASH_REF';
$bx = thaw freeze $bc;

is(ref $bx, 'TIED_HASH_REF');
$old_hash_fetch = $hash_fetch;
$v = $bx->{attribute};
is($hash_fetch, $old_hash_fetch + 1, 'Still tied');