Initial Drupal 11 with DDEV setup

vendor/phootwork/lang/parts/InternalPart.php

@@ -0,0 +1,67 @@
+<?php declare(strict_types=1);
+/**
+ * This file is part of the Phootwork package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @license MIT License
+ * @copyright Thomas Gossmann
+ */
+namespace phootwork\lang\parts;
+
+use InvalidArgumentException;
+
+/**
+ * Internal Text methods
+ *
+ * @author Thomas Gossmann
+ * @author Cristiano Cinotti
+ */
+trait InternalPart {
+	abstract public function length(): int;
+
+	/**
+	 * @internal
+	 *
+	 * @param int $offset
+	 *
+	 * @return int
+	 */
+	protected function prepareOffset(int $offset): int {
+		$len = $this->length();
+		if ($offset < -$len || $offset > $len) {
+			throw new InvalidArgumentException("Offset must be in range [-$len, $len]");
+		}
+
+		if ($offset < 0) {
+			$offset += $len;
+		}
+
+		return $offset;
+	}
+
+	/**
+	 * @param int      $offset
+	 * @param int|null $length
+	 *
+	 * @return int
+	 *
+	 * @internal
+	 *
+	 */
+	protected function prepareLength(int $offset, ?int $length): int {
+		$length = (null === $length) ? ($this->length() - $offset) : (
+			($length < 0) ? ($length + $this->length() - $offset) : $length
+		);
+
+		if ($length < 0) {
+			throw new InvalidArgumentException('Length too small');
+		}
+
+		if ($offset + $length > $this->length()) {
+			throw new InvalidArgumentException('Length too large');
+		}
+
+		return $length;
+	}
+}