added system

system/DataCaster/Cast/CastInterface.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\DataCaster\Cast;
+
+interface CastInterface
+{
+    /**
+     * Takes a value from DataSource, returns its value for PHP.
+     *
+     * @param mixed        $value  Data from database driver
+     * @param list<string> $params Additional param
+     * @param object|null  $helper Helper object. E.g., database connection
+     *
+     * @return mixed PHP native value
+     */
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed;
+
+    /**
+     * Takes a PHP value, returns its value for DataSource.
+     *
+     * @param mixed        $value  PHP native value
+     * @param list<string> $params Additional param
+     * @param object|null  $helper Helper object. E.g., database connection
+     *
+     * @return mixed Data to pass to database driver
+     */
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed;
+}