recursivedualiterator.inc

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<?php

class RecursiveDualIterator extends DualIterator implements RecursiveIterator
{
    private $ref;

    function __construct(RecursiveIterator $lhs, RecursiveIterator $rhs, 
                $flags = 0x33 /*DualIterator::DEFAULT_FLAGS*/)
    {
        parent::__construct($lhs, $rhs, $flags);
    }

    function hasChildren()
    {
        return $this->getLHS()->hasChildren() && $this->getRHS()->hasChildren();    
    }

    function getChildren()
    {
        if (empty($this->ref))
        {
            $this->ref = new ReflectionClass($this);
        }
        return $this->ref->newInstance(
                    $this->getLHS()->getChildren(), $this->getRHS()->getChildren(), $this->getFlags());
    }

    function areIdentical()
    {
        return $this->getLHS()->hasChildren() === $this->getRHS()->hasChildren()
            && parent::areIdentical();
    }

    function areEqual()
    {
        return $this->getLHS()->hasChildren() === $this->getRHS()->hasChildren()
            && parent::areEqual();
    }
}

?>