vendor and env first commit

vendor/league/commonmark/src/Node/StringContainerHelper.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Node;
+
+final class StringContainerHelper
+{
+    /**
+     * Extract text literals from all descendant nodes
+     *
+     * @param Node          $node         Parent node
+     * @param array<string> $excludeTypes Optional list of node class types to exclude
+     *
+     * @return string Concatenated literals
+     */
+    public static function getChildText(Node $node, array $excludeTypes = []): string
+    {
+        $text = '';
+
+        foreach ($node->iterator() as $child) {
+            if ($child instanceof StringContainerInterface && ! self::isOneOf($child, $excludeTypes)) {
+                $text .= $child->getLiteral();
+            }
+        }
+
+        return $text;
+    }
+
+    /**
+     * @param string[] $classesOrInterfacesToCheck
+     *
+     * @psalm-pure
+     */
+    private static function isOneOf(object $object, array $classesOrInterfacesToCheck): bool
+    {
+        foreach ($classesOrInterfacesToCheck as $type) {
+            if ($object instanceof $type) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}