Initial refactor of namespace handling

src/common/model/namespace.h

@@ -0,0 +1,87 @@
+/**
+ * src/common/model/namespace.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * 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.
+ */
+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace clanguml::common::model {
+
+class namespace_ {
+    using container_type = std::vector<std::string>;
+
+public:
+    namespace_() = default;
+
+    namespace_(const std::string &ns);
+
+    namespace_(container_type::const_iterator begin,
+        container_type::const_iterator end);
+
+    namespace_(const namespace_ &right) noexcept = default;
+
+    namespace_ &operator=(const namespace_ &right) noexcept = default;
+
+    namespace_(namespace_ &&right) noexcept = default;
+
+    namespace_ &operator=(namespace_ &&right) noexcept = default;
+
+    friend bool operator==(const namespace_ &left, const namespace_ &right);
+
+    namespace_(std::initializer_list<std::string> ns);
+
+    explicit namespace_(const std::vector<std::string> &ns);
+
+    std::string to_string() const;
+
+    bool is_empty() const;
+
+    size_t size() const;
+
+    namespace_ operator|(const namespace_ &right) const;
+    void operator|=(const namespace_ &right);
+    namespace_ operator|(const std::string &right) const;
+    void operator|=(const std::string &right);
+
+    std::string &operator[](const int index);
+    const std::string &operator[](const int index) const;
+
+    void append(const std::string &ns);
+
+    void append(const namespace_ &ns);
+
+    void pop_back();
+
+    bool starts_with(const namespace_ &right) const;
+    namespace_ common_path(const namespace_ &right) const;
+    namespace_ relative_to(const namespace_ &right) const;
+    std::string relative(const std::string &name) const;
+    std::string name() const;
+
+    container_type::iterator begin();
+    container_type::iterator end();
+    container_type::const_iterator begin() const;
+    container_type::const_iterator end() const;
+    container_type::const_iterator cbegin() const;
+    container_type::const_iterator cend() const;
+
+private:
+    container_type namespace_path_;
+};
+
+}