data: NameHierarchy class

* replaced vector of strings as name hierarchy by a new NameHierarchy class.
* Adjusted code in ASTVisitor, Storage and various test cases.

src/lib/data/name/NameHierarchy.h

@@ -0,0 +1,28 @@
+#ifndef NAME_HIERARCHY_H
+#define NAME_HIERARCHY_H
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "data/name/NameElement.h"
+
+class NameHierarchy
+{
+public:
+	NameHierarchy();
+	~NameHierarchy();
+
+	void push(std::shared_ptr<NameElement> element);
+	void pop();
+	std::shared_ptr<NameElement> back();
+	std::shared_ptr<NameElement> operator[](size_t pos) const;
+	size_t size() const;
+
+	std::string getFullName() const;
+
+private:
+	std::vector<std::shared_ptr<NameElement>> m_elements;
+};
+
+#endif // NAME_ELEMENT_H