DelimitedList.php
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DelimitedList.php
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	<?php
	/*---------------------------------------------------------------------------------------------
	* Copyright (c) Microsoft Corporation. All rights reserved.
	* Licensed under the MIT License. See License.txt in the project root for license information.
	--------------------------------------------------------------------------------------------/

	namespace Microsoft\PhpParser\Node;

	use Microsoft\PhpParser\Node;
	use Microsoft\PhpParser\Token;
	use Microsoft\PhpParser\TokenKind;

	abstract class DelimitedList extends Node {
	/** @var Token[]\|Node[] */
	public $children;

	const CHILD_NAMES = [
	'children'
	];

	const DELIMITERS = [TokenKind::CommaToken, TokenKind::BarToken, TokenKind::SemicolonToken];

	public function getElements() : \Generator {
	foreach ($this->children as $child) {
	if ($child instanceof Node) {
	yield $child;
	} elseif ($child instanceof Token && !\in_array($child->kind, self::DELIMITERS)) {
	yield $child;
	}
	}
	}

	public function getValues() {
	foreach ($this->children as $idx=>$value) {
	if ($idx % 2 == 0) {
	yield $value;
	}
	}
	}

	public function addElement($node) {
	if ($node === null) {
	return;
	}
	if ($this->children === null) {
	$this->children = [$node];
	return;
	}
	$this->children[] = $node;
	}
	}