-//
-// 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
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);
};