TypedArrayIterator.php

<?php

namespace AC;

use LogicException;

abstract class TypedArrayIterator extends ArrayIterator {

	/**
	 * @var string
	 */
	protected $type;

	/**
	 * @param array  $array
	 * @param string $type Type to validate the collection against
	 */
	public function __construct( array $array, $type ) {
		parent::__construct( $array );

		$this->type = $type;
	}

	/**
	 * Optional validation when a type was set
	 * @throws LogicException
	 */
	protected function validate() {
		foreach ( $this as $value ) {
			$this->validate_type( $value );
		}
	}

	/**
	 * @param $value
	 */
	protected function validate_type( $value ) {
		if ( ! $value instanceof $this->type ) {
			throw new LogicException( sprintf( 'Item is not a %s.', $this->type ) );
		}
	}

}