55 lines
1.3 KiB
PHP
55 lines
1.3 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace League\CommonMark\Node;
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final class StringContainerHelper
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{
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/**
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* Extract text literals from all descendant nodes
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*
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* @param Node $node Parent node
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* @param array<string> $excludeTypes Optional list of node class types to exclude
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*
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* @return string Concatenated literals
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*/
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public static function getChildText(Node $node, array $excludeTypes = []): string
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{
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$text = '';
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foreach ($node->iterator() as $child) {
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if ($child instanceof StringContainerInterface && ! self::isOneOf($child, $excludeTypes)) {
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$text .= $child->getLiteral();
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}
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}
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return $text;
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}
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/**
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* @param string[] $classesOrInterfacesToCheck
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*
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* @psalm-pure
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*/
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private static function isOneOf(object $object, array $classesOrInterfacesToCheck): bool
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{
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foreach ($classesOrInterfacesToCheck as $type) {
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if ($object instanceof $type) {
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return true;
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}
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}
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return false;
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}
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}
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