/**
* Initializes a new instance of that class.
*
* @param callable $provider The callable that provides the value.
*
* @throws ArgumentException $provider is no valid callable / lambda expression.
* @throws ArgumentNullException $provider is (null).
*/
public function __construct($provider)
{
if (null === $provider) {
throw new ArgumentNullException('provider');
}
parent::__construct(static::asCallable($provider));
}
/**
* Initializes a new instance of that class.
*
* @param mixed $value The value to wrap.
* @param callable $converter The converter to use.
*/
public function __construct($value, $converter = null)
{
$this->_converter = static::getConverterSafe($converter);
parent::__construct($value);
}
/**
* Initializes a new instance of that class.
*
* @param mixed $value The value to wrap.
* @param callable $equalityComparer The custom equality comparer to use.
*
* @throws ArgumentException $equalityComparer is no valid callable / lambda expression.
*/
public function __construct($value, $equalityComparer = null)
{
$this->_equalityComparer = static::getEqualityComparerSafe($equalityComparer);
parent::__construct($value);
}
public function map($callback)
{
$data =& $this->getValue();
if ($data != null && is_array($data)) {
$toMap =& $data;
} else {
$toMap = array($data);
}
$mapped = new ValueWrapper(array());
foreach ($toMap as $key => $value) {
$mappedVal = $callback($key, $value, new DataWrapper($this, $key), new ValueWrapperRef($value));
static::unwrapValue($mappedVal);
$mapped->set($key, $mappedVal);
}
return $mapped;
}