<?php

/**
 * Composite strategy that runs multiple strategies on tokens.
 */
abstract class HTMLPurifier_Strategy_Composite extends HTMLPurifier_Strategy {
	
	/**
	 * List of strategies to run tokens through.
	 * @type HTMLPurifier_Strategy[]
	 */
	protected $strategies = array ();
	
	/**
	 *
	 * @param HTMLPurifier_Token[] $tokens        	
	 * @param HTMLPurifier_Config $config        	
	 * @param HTMLPurifier_Context $context        	
	 * @return HTMLPurifier_Token[]
	 */
	public function execute($tokens, $config, $context) {
		foreach ( $this->strategies as $strategy ) {
			$tokens = $strategy->execute ( $tokens, $config, $context );
		}
		return $tokens;
	}
}

// vim: et sw=4 sts=4