CacheEntryInfo.h

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#pragma once
#include "TrailingVariableDataLayout.h"
 
namespace catapult { namespace model {
 
#pragma pack(push, 1)
 
    template<typename TIdentifier>
    struct CacheEntryInfo : public TrailingVariableDataLayout<CacheEntryInfo<TIdentifier>, uint8_t> {
    private:
        using BaseType = TrailingVariableDataLayout<CacheEntryInfo<TIdentifier>, uint8_t>;
        using BaseType::PayloadStart;
        using BaseType::ToTypedPointer;
 
    public:
        static constexpr uint32_t Max_Data_Size = 0x00FFFFFF;
 
    public:
        TIdentifier Id;
 
        uint32_t DataSize;
 
        // followed by data if DataSize > 0
 
    public:
        const uint8_t* DataPtr() const {
            return DataSize ? ToTypedPointer(PayloadStart(*this)) : nullptr;
        }
 
        uint8_t* DataPtr() {
            return DataSize ? ToTypedPointer(PayloadStart(*this)) : nullptr;
        }
 
    public:
        bool HasData() const {
            return DataSize > 0;
        }
 
        bool IsTooLarge() const {
            return DataSize >= Max_Data_Size;
        }
 
    public:
        static constexpr uint64_t CalculateRealSize(const CacheEntryInfo& cacheEntryInfo) noexcept {
            return sizeof(CacheEntryInfo<TIdentifier>) + cacheEntryInfo.DataSize;
        }
    };
 
#pragma pack(pop)
}}