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package Atheme::ReadOnlyHashWrapper;
use Carp;
sub TIEHASH {
my ($class, $find_func) = @_;
$class = ref $class || $class;
my $self = { find_func => $find_func };
return bless $self, $class;
}
sub FETCH {
my ($self, $key) = @_;
return $self->{find_func}->($key);
}
sub readonly {
croak "Attempted to modify read-only hash\n";
}
sub STORE { goto &readonly; }
sub DELETE { goto &readonly; }
sub CLEAR { goto &readonly; }
sub EXISTS {
my ($self, $key) = @_;
return defined $self->FETCH($key);
}
sub unimplemented {
croak "Iteration over Atheme object hash not yet implemented\n";
}
sub FIRSTKEY { goto &unimplemented; }
sub NEXTKEY { goto &unimplemented; }
sub SCALAR {
return 1; # Generic true value. There's always at least one client.
}
1;
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