SeriesMatchingOnce.php
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SeriesMatchingOnce.php
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	<?php
	namespace Hamcrest\Arrays;

	/*
	Copyright (c) 2009 hamcrest.org
	*/

	use Hamcrest\Description;
	use Hamcrest\Matcher;

	class SeriesMatchingOnce
	{

	private $_elementMatchers;
	private $_keys;
	private $_mismatchDescription;
	private $_nextMatchKey;

	public function __construct(array $elementMatchers, Description $mismatchDescription)
	{
	$this->_elementMatchers = $elementMatchers;
	$this->_keys = array_keys($elementMatchers);
	$this->_mismatchDescription = $mismatchDescription;
	}

	public function matches($item)
	{
	return $this->_isNotSurplus($item) && $this->_isMatched($item);
	}

	public function isFinished()
	{
	if (!empty($this->_elementMatchers)) {
	$nextMatcher = current($this->_elementMatchers);
	$this->_mismatchDescription->appendText('No item matched: ')->appendDescriptionOf($nextMatcher);

	return false;
	}

	return true;
	}

	// -- Private Methods

	private function _isNotSurplus($item)
	{
	if (empty($this->_elementMatchers)) {
	$this->_mismatchDescription->appendText('Not matched: ')->appendValue($item);

	return false;
	}

	return true;
	}

	private function _isMatched($item)
	{
	$this->_nextMatchKey = array_shift($this->_keys);
	$nextMatcher = array_shift($this->_elementMatchers);

	if (!$nextMatcher->matches($item)) {
	$this->_describeMismatch($nextMatcher, $item);

	return false;
	}

	return true;
	}

	private function _describeMismatch(Matcher $matcher, $item)
	{
	$this->_mismatchDescription->appendText('item with key ' . $this->_nextMatchKey . ': ');
	$matcher->describeMismatch($item, $this->_mismatchDescription);
	}
	}