<?php

class Parser {

	var $parent;

	function Parser(&$parent, $attr) {
		$this->C($parent, $attr);
	}

	function C(&$parent, $attr) {
		$this->parent = &$parent;
		$this->init($attr);
	}

	function setHandler($parser) {
		xml_set_element_handler($parser, $this->getCallBack('element_start'),
		                        $this->getCallBack('element_end'));
		xml_set_character_data_handler($parser, $this->getCallBack('element_cdata'));
	}

	function &getCallBack($func) {
		$cb = array();
		$cb[] = &$this;
		$cb[] = $func;
		return $cb;
	}

	function init($attr) {
	}

	function final() {
	}

	function element_cdata($parser, $data) {
	}

	function element_start($parser, $name, $attr) {
	}

	function element_end($parser, $name) {
		if ($name == $this->getName()) {
			$this->parent->setHandler($parser);
			$this->final();
		}
	}

	function getName() {
		trigger_error('not implemented');
	}

}

?>