DifferentialReviewerStatus.php
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	<?php

	final class DifferentialReviewerStatus {

	const STATUS_BLOCKING = 'blocking';
	const STATUS_ADDED = 'added';
	const STATUS_ACCEPTED = 'accepted';
	const STATUS_REJECTED = 'rejected';
	const STATUS_COMMENTED = 'commented';
	const STATUS_ACCEPTED_OLDER = 'accepted-older';
	const STATUS_REJECTED_OLDER = 'rejected-older';

	/**
	* Returns the relative strength of a status, used to pick a winner when a
	* transaction group makes several status changes to a particular reviewer.
	*
	* For example, if you accept a revision and leave a comment, the transactions
	* will attempt to update you to both "commented" and "accepted". We want
	* "accepted" to win, because it's the stronger of the two.
	*
	* @param const Reviewer status constant.
	* @return int Relative strength (higher is stronger).
	*/
	public static function getStatusStrength($constant) {
	$map = array(
	self::STATUS_ADDED => 1,

	self::STATUS_COMMENTED => 2,

	self::STATUS_BLOCKING => 3,

	self::STATUS_ACCEPTED_OLDER => 4,
	self::STATUS_REJECTED_OLDER => 4,

	self::STATUS_ACCEPTED => 5,
	self::STATUS_REJECTED => 5,
	);

	return idx($map, $constant, 0);
	}

	}