Add cpp_namespace

include/cppast/cpp_namespace.hpp

@@ -0,0 +1,66 @@
+// Copyright (C) 2017 Jonathan Müller <jonathanmueller.dev@gmail.com>
+// This file is subject to the license terms in the LICENSE file
+// found in the top-level directory of this distribution.
+
+#ifndef CPPAST_CPP_NAMESPACE_HPP_INCLUDED
+#define CPPAST_CPP_NAMESPACE_HPP_INCLUDED
+
+#include <cppast/cpp_scope.hpp>
+
+namespace cppast
+{
+    /// A [cppast::cpp_entity]() modelling a namespace.
+    class cpp_namespace : public cpp_scope
+    {
+    public:
+        /// Builds a [cppast::cpp_namespace]().
+        class builder
+        {
+        public:
+            /// \effects Sets the namespace name and whether it is inline.
+            explicit builder(const cpp_entity& parent, std::string name, bool is_inline)
+            : namespace_(new cpp_namespace(parent, std::move(name), is_inline))
+            {
+            }
+
+            /// \effects Adds an entity.
+            void add_child(std::unique_ptr<cpp_entity> child) noexcept
+            {
+                namespace_->add_child(std::move(child));
+            }
+
+            /// \returns The finished namespace.
+            std::unique_ptr<cpp_namespace> finish() noexcept
+            {
+                return std::move(namespace_);
+            }
+
+            /// \returns A reference to (not yet finished) namespace.
+            const cpp_namespace& get() const noexcept
+            {
+                return *namespace_;
+            }
+
+        private:
+            std::unique_ptr<cpp_namespace> namespace_;
+        };
+
+        /// \returns Whether or not the namespace is an `inline namespace`.
+        bool is_inline() const noexcept
+        {
+            return inline_;
+        }
+
+    private:
+        cpp_namespace(const cpp_entity& parent, std::string name, bool is_inline)
+        : cpp_scope(parent, std::move(name)), inline_(is_inline)
+        {
+        }
+
+        cpp_entity_type do_get_entity_type() const noexcept override;
+
+        bool inline_;
+    };
+} // namespace cppast
+
+#endif // CPPAST_CPP_NAMESPACE_HPP_INCLUDED