/** * {@inheritdoc} */ public function guard($value, Field $field) { /** @var Message $value */ Assertion::isInstanceOf($value, 'Gdbots\\Pbj\\Message', null, $field->getName()); Assertion::isInstanceOf($value, $field->getClassName(), null, $field->getName()); if (!$field->hasAnyOfClassNames()) { return; } $classNames = $field->getAnyOfClassNames(); if (empty($classNames)) { // means it can be "any message" return; } foreach ($classNames as $className) { if ($value instanceof $className) { return; } } Assertion::true(false, sprintf('Field [%s] must be an instance of at least one of: %s.', $field->getName(), implode(',', $classNames)), $field->getName()); }