X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fresult.hpp;h=e14f92b253b726b6a14fa3727de4855aaeff9a6b;hb=f7f02a664fc0438f00e6bd09797a3bf4184c123f;hp=b740a0cd0c6be5ae5f44ccf0085d4a52c981fdee;hpb=2fbbf206caf7a2a2940a3c7535a85660b54b6734;p=staging%2Fwindowmanager.git

diff --git a/src/result.hpp b/src/result.hpp
index b740a0c..e14f92b 100644
--- a/src/result.hpp
+++ b/src/result.hpp
@@ -1,6 +1,18 @@
-//
-// Created by mfritzsc on 7/12/17.
-//
+/*
+ * Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 #ifndef TMCAGLWM_RESULT_HPP
 #define TMCAGLWM_RESULT_HPP
@@ -30,14 +42,14 @@ struct result {
       return this->t.value();
    }
 
-   operator T() {
-      return this->unwrap();
-   }
+   operator T() { return this->unwrap(); }
 
    char const *unwrap_err() { return this->e; }
 
-   optional<T> ok() const { return this->t; }
-   optional<char const *> err() const { return optional<char const *>(this->e); }
+   optional<T> const &ok() const { return this->t; }
+   optional<char const *> err() const {
+      return this->e ? optional<char const *>(this->e) : nullopt;
+   }
 
    result<T> map_err(std::function<char const *(char const *)> f);
 };