File Coverage

blib/lib/Tie/NumRange.pm

Criterion	Covered	Total	%
statement	19	19	100.0
branch	5	6	83.3
condition	4	6	66.6
subroutine	6	6	100.0
pod			n/a
total	34	37	91.8

package Tie::NumRange;

$VERSION = '0.021';


sub TIESCALAR {
  my $class = shift;
  my $self = bless [ @_ ], $class;
  $self->STORE($_[0]);  # just in case
  return $self;
}


sub STORE {
  my ($self,$val) = @_;

  return $self->[0] = $self->[1] if
    defined($self->[1]) and
    $self->[1] > $val;

  return $self->[0] = $self->[2] if
    defined($self->[2]) and
    $self->[2] < $val;

  return $self->[0] = $val;
}


sub FETCH { $_[0][0] }



package Tie::NumRange::Wrap;

sub TIESCALAR {
  my $class = shift;
  die "tie()ing to $class requires a lower and upper bound" if
    grep !defined, @_[1,2];
  my $self = bless [ @_ ], $class;
  $self->STORE($_[0]);  # just in case
  return $self;
}


sub STORE {
  my ($self,$val) = @_;

  $val += $self->[2] - $self->[1] while $val < $self->[1];
  $val -= $self->[2] - $self->[1] while $val > $self->[2];

  return $self->[0] = $val;
}


sub FETCH { $_[0][0] }


1;

__END__