Add swap() method.

src/machinery/pathname.cpp

@@ -251,4 +251,11 @@ namespace mchlib {
 	std::size_t PathName::str_path_size() const {
 		return calc_join_size(m_pool, is_absolute());
 	}
+
+	void PathName::swap (PathName& parOther) noexcept {
+		if (this != &parOther) {
+			this->m_pool.swap(parOther.m_pool);
+			std::swap(m_absolute, parOther.m_absolute);
+		}
+	}
 } //namespace mchlib

src/machinery/pathname.hpp

@@ -48,6 +48,7 @@ namespace mchlib {
 		PathName& pop_right ( void );
 		bool operator!= ( const PathName& parOther ) const;
 		bool operator== ( const PathName& parOther ) const;
+		void swap (PathName& parOther) noexcept;
 
 	private:
 		static const std::string m_empty_str;

src/machinery/stringpool.hpp

@@ -58,6 +58,7 @@ namespace mchlib {
 		const string_type* get_stringref_source ( std::size_t parIndex ) const;
 		const stringref_type& operator[] ( std::size_t parIndex ) const;
 		void pop ( void );
+		void swap (StringPool& parOther) noexcept;
 
 	private:
 		PoolType m_pool;

src/machinery/stringpool.inl

@@ -137,4 +137,10 @@ namespace mchlib {
 		}
 		return;
 	}
+
+	template <typename C, typename Str, typename StrRef>
+	void StringPool<C, Str, StrRef>::swap (StringPool& parOther) noexcept {
+		m_pool.swap(parOther.m_pool);
+		m_strings.swap(parOther.m_strings);
+	}
 } //namespace mchlib