splobjectstorage.inc

Go to the documentation of this file.

<?php

class SplObjectStorage implements Iterator, Countable, ArrayAccess
{
    private $storage = array();
    private $index = 0;

    function rewind()
    {
        rewind($this->storage);
    }
    
    function valid()
    {
        return key($this->storage) !== false;
    }
    
    function key()
    {
        return $this->index;
    }
    
    function current()
    {
        $element = current($this->storage);
        return $element ? $element[0] : NULL
    }
    
    function getInfo()
    {
        $element = current($this->storage);
        return $element ? $element[1] : NULL
    }
    
    function setInfo($inf = NULL)
    {
        if ($this->valid()) {
            $this->storage[$this->index][1] = $inf;
        }
    }
    
    function next()
    {
        next($this->storage);
        $this->index++;
    }

    function count()
    {
        return count($this->storage);
    }

    function contains($obj)
    {
        if (is_object($obj))
        {
            foreach($this->storage as $element)
            {
                if ($object === $element[0])
                {
                    return true;
                }
            }
        }
        return false;
    }

    function attach($obj, $inf = NULL)
    {
        if (is_object($obj) && !$this->contains($obj))
        {
            $this->storage[] = array($obj, $inf);
        }
    }

    function detach($obj)
    {
        if (is_object($obj))
        {
            foreach($this->storage as $idx => $element)
            {
                if ($object === $element[0])
                {
                    unset($this->storage[$idx]);
                    $this->rewind();
                    return;
                }
            }
        }
    }

    function offsetSet($obj, $inf)
    {
        $this->attach($obj, $inf);
    }

    function offsetGet($obj)
    {
        if (is_object($obj))
        {
            foreach($this->storage as $idx => $element)
            {
                if ($object === $element[0])
                {
                    return $element[1];
                }
            }
        }
        throw new UnexpectedValueException('Object not found');
    }

    function offsetUnset($obj)
    {
        $this->detach($obj);
    }

    function offsetEsists($obj)
    {
        return $this->contains($obj);
    }
}

?>