File Coverage

blib/lib/Tree/Binary/Visitor/Base.pm

Criterion	Covered	Total	%
statement	28	28	100.0
branch	4	4	100.0
condition	4	6	66.6
subroutine	10	10	100.0
pod	7	7	100.0
total	53	55	96.3

package Tree::Binary::Visitor::Base;

use strict;
use warnings;

our $VERSION = '1.09';

### constructor

sub new {
    my ($_class) = @_;
    my $class = ref($_class) || $_class;
    my $visitor = {};
    bless($visitor, $class);
    $visitor->_init();
    return $visitor;
}

### methods

sub _init {
	my ($self) = @_;
    $self->{_filter_function} = undef;
    $self->{_results} = [];
}

# node filter methods

sub getNodeFilter {
    my ($self) = @_;
	return $self->{_filter_function};
}

sub clearNodeFilter {
    my ($self) = @_;
	$self->{_filter_function} = undef;
}

sub setNodeFilter {
    my ($self, $filter_function) = @_;
	(defined($filter_function) && ref($filter_function) eq "CODE")
		|| die "Insufficient Arguments : filter function argument must be a subroutine reference";
	$self->{_filter_function} = $filter_function;
}

# results methods

sub setResults {
    my ($self, @results) = @_;
    $self->{results} = \@results;
}

sub getResults {
    my ($self) = @_;
    return wantarray ?
             @{$self->{results}}
             :
             $self->{results};
}


# abstract method
sub visit { die "Method Not Implemented" }

1;

__END__