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package Tangram::Lazy::Ref;
use Tangram::Type::Scalar;
use strict;
sub TIESCALAR
{
my $pkg = shift;
return bless [ @_ ], $pkg;
}
sub FETCH
{
my $self = shift;
my ($storage, $id, $member, $refid) = @$self;
my $refobj;
if ($id) {
print $Tangram::TRACE "demanding $id.$member".(defined $storage->{objects}{$refid}
? " (hot)":"")."\n"
if $Tangram::TRACE;
my $obj = $storage->{objects}{$id};
$refobj = $storage->load($refid);
untie $obj->{$member};
$obj->{$member} = $refobj;
} else {
print $Tangram::TRACE "demanding obj $refid".(defined $storage->{objects}{$refid}
? " (hot)":"")."\n"
if $Tangram::TRACE;
untie $$member;
$refobj = $$member = $storage->load($refid);
}
return $refobj;
}
# XXX - not tested by test suite
sub STORE
{
my ($self, $val) = @_;
my ($storage, $id, $member, $refid) = @$self;
if ($id) {
my $obj = $storage->{objects}{$id};
untie $obj->{$member};
return $obj->{$member} = $val;
} else {
untie $$member;
$$member = $val;
}
}
sub id
{
my ($storage, $id, $member, $refid) = @{shift()};
$refid;
}
1;
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