Helpers::dump() throws exception for closures

Author: dg

src/PhpGenerator/Helpers.php

@@ -93,6 +93,9 @@ private static function _dump(& $var, $level = 0)
 			$var = serialize($var);
 			return 'unserialize(' . self::_dump($var, $level) . ')';
 
+		} elseif ($var instanceof \Closure) {
+			throw new Nette\InvalidArgumentException('Cannot dump closure.');
+
 		} elseif (is_object($var)) {
 			$arr = (array) $var;
 			$space = str_repeat("\t", $level);

tests/PhpGenerator/Helpers.dump().phpt

@@ -83,3 +83,7 @@ class Test3 implements Serializable
 
 Assert::same('unserialize(\'C:5:"Test3":0:{}\')', Helpers::dump(new Test3));
 Assert::equal(new Test3, eval('return ' . Helpers::dump(new Test3) . ';'));
+
+Assert::exception(function () {
+	Helpers::dump(function () {});
+}, 'Nette\InvalidArgumentException', 'Cannot dump closure.');