NodeObject.h

#pragma once
 
#include <xrpl/basics/Blob.h>
#include <xrpl/basics/CountedObject.h>
#include <xrpl/basics/base_uint.h>
 
#include <cstddef>
#include <cstdint>
#include <memory>
 
// VFALCO NOTE Intentionally not in the node_store namespace
 
namespace xrpl {

enum class NodeObjectType : std::uint32_t {
    Unknown = 0,
    Ledger = 1,
    AccountNode = 3,
    TransactionNode = 4,
    Dummy = 512  // an invalid or missing object
};

class NodeObject : public CountedObject<NodeObject>
{
public:
    static constexpr std::size_t kKeyBytes = 32;
 
private:
    // This hack is used to make the constructor effectively private
    // except for when we use it in the call to make_shared.
    // There's no portable way to make make_shared<> a friend work.
    struct PrivateAccess
    {
        explicit PrivateAccess() = default;
    };
 
public:
    // This constructor is private, use createObject instead.
    NodeObject(NodeObjectType type, Blob&& data, uint256 const& hash, PrivateAccess);

    static std::shared_ptr<NodeObject>
    createObject(NodeObjectType type, Blob&& data, uint256 const& hash);

    [[nodiscard]] NodeObjectType
    getType() const;

    [[nodiscard]] uint256 const&
    getHash() const;

    [[nodiscard]] Blob const&
    getData() const;
 
private:
    NodeObjectType const type_;
    uint256 const hash_;
    Blob const data_;
};
 
}  // namespace xrpl