DifferentialReviewersCommitMessageField.php
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	<?php

	final class DifferentialReviewersCommitMessageField
	extends DifferentialCommitMessageField {

	const FIELDKEY = 'reviewerPHIDs';

	public function getFieldName() {
	return pht('Reviewers');
	}

	public function getFieldAliases() {
	return array(
	'Reviewer',
	);
	}

	public function parseFieldValue($value) {
	$results = $this->parseObjectList(
	$value,
	array(
	PhabricatorPeopleUserPHIDType::TYPECONST,
	PhabricatorProjectProjectPHIDType::TYPECONST,
	PhabricatorOwnersPackagePHIDType::TYPECONST,
	),
	false,
	array('!'));

	return $this->flattenReviewers($results);
	}

	private function flattenReviewers(array $values) {
	// NOTE: For now, `arc` relies on this field returning only scalars, so we
	// need to reduce the results into scalars. See T10981.
	$result = array();

	foreach ($values as $value) {
	$result[] = $value['phid'].implode('', array_keys($value['suffixes']));
	}

	return $result;
	}

	private function inflateReviewers(array $values) {
	$result = array();

	foreach ($values as $value) {
	if (substr($value, -1) == '!') {
	$value = substr($value, 0, -1);
	$suffixes = array('!' => '!');
	} else {
	$suffixes = array();
	}

	$result[] = array(
	'phid' => $value,
	'suffixes' => $suffixes,
	);
	}

	return $result;
	}

	}