Namespace.h

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#pragma once
#include "NamespaceLifetime.h"
#include "src/model/NamespaceConstants.h"
#include "catapult/utils/CheckedArray.h"
#include "catapult/types.h"
 
namespace catapult { namespace state {
 
    class Namespace {
    public:
        using Path = utils::CheckedArray<NamespaceId, Namespace_Max_Depth>;
 
    public:
        explicit Namespace(const Path& path) : m_path(path) {
            if (m_path.empty())
                CATAPULT_THROW_OUT_OF_RANGE("path cannot be empty");
        }
 
    public:
        NamespaceId id() const {
            return m_path[m_path.size() - 1];
        }
 
        NamespaceId parentId() const {
            return 1 == m_path.size() ? Namespace_Base_Id : m_path[m_path.size() - 2];
        }
 
        NamespaceId rootId() const {
            return m_path[0];
        }
 
        bool isRoot() const {
            return 1 == m_path.size();
        }
 
        const Path& path() const {
            return m_path;
        }
 
    public:
        Namespace createChild(NamespaceId id) const {
            if (Namespace_Max_Depth == m_path.size())
                CATAPULT_THROW_OUT_OF_RANGE("maximum depth for namepsace path exceeded");
 
            Path childPath = m_path;
            childPath.push_back(id);
            return Namespace(childPath);
        }
 
    public:
        bool operator==(const Namespace& rhs) const {
            return m_path == rhs.m_path;
        }
 
        bool operator!=(const Namespace& rhs) const {
            return !(*this == rhs);
        }
 
    private:
        Path m_path;
    };
}}