package Tie::NormalArray;
# $Id: NormalArray.pm 1049 2003-12-08 21:10:33Z jonasbn $
use strict;
use warnings;
use vars qw($VERSION);
$VERSION = '1.08';
sub TIEARRAY {
my ($class, $shadow) = @_;
my $self = bless {'shadow' => $shadow}, $class;
$self->size;
$self;
}
sub FETCH {
my ($self, $index) = @_;
$self->{'shadow'}->FETCH($index);
}
sub STORE {
my ($self, $index, $value) = @_;
my $flag = $self->{'shadow'}->EXISTS($index);
$self->{'shadow'}->STORE($index, $value);
$self->{'size'}++ unless ($flag);
}
sub DESTROY {
my $self = shift;
undef $self->{'shadow'};
}
sub size {
my $self = shift;
my $size = 0;
my $obj = $self->{'shadow'};
my ($k, $v) = $obj->FIRSTKEY;
my %hash;
$hash{int($k)} = 1;
while (($k, $v) = $obj->NEXTKEY) {
$hash{int($k)} = 1;
}
my @keys = sort {$b <=> $a} keys %hash;
$self->{'size'} = $keys[0] + 1;
}
sub FETCHSIZE {
my $self = shift;
$self->{'size'};
}
sub STORESIZE {
my ($self, $size) = @_;
my $current = $self->FETCHSIZE;
while ($current < $size) {
$self->STORE($current++, undef);
}
while ($current > $size) {
$self->{'shadow'}->DELETE(--$current);
}
$self->{'size'} = $size;
}
1;