Imported code from old repository

classes/TypeChecker.php

@@ -0,0 +1,52 @@
+<?php
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+namespace CloudObjects\PhpMAE;
+
+use ML\IRI\IRI;
+use ML\JsonLD\Node;
+use CloudObjects\SDK\NodeReader;
+
+class TypeChecker {
+
+  private static $reader;
+
+  public static function isType(Node $object, $typeString) {
+    if (!isset(self::$reader))
+      self::$reader = new NodeReader([ 'prefixes' => [
+        'phpmae' => 'coid://phpmae.dev/'
+      ]]);
+    
+    return self::$reader->hasType($object, $typeString);
+  }
+
+  public static function isClass(Node $object) {
+    return self::isType($object, 'phpmae:Class')
+      || self::isType($object, 'phpmae:HTTPInvokableClass');
+  }
+
+  public static function isInterface(Node $object) {
+    return self::isType($object, 'phpmae:Interface');
+  }
+
+  public static function getAdditionalTypes(Node $object) {
+		$types = $object->getType();
+		if (!is_array($types))
+			return [];
+
+		$coids = [];
+		foreach ($types as $t) {
+      if (in_array($t->getId(), [ 'coid://phpmae.dev/Class',  
+        'coid://phpmae.dev/HTTPInvokableClass',
+        'coid://phpmae.dev/Interface',
+        ])) continue;
+			$coids[] = new IRI($t->getId());
+		}
+
+		return $coids;
+	}
+
+}