ArchiveEntry.hpp

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#pragma once
#include <Pothos/Config.hpp>
#include <Pothos/Archive/StreamArchiver.hpp>
#include <type_traits>
#include <typeinfo>
#include <iosfwd>
#include <string>

namespace Pothos {
namespace Archive {

class POTHOS_API ArchiveEntry
{
public:

    ArchiveEntry(const std::type_info &type, const std::string &id);

    virtual ~ArchiveEntry(void);

    virtual void save(OStreamArchiver &ar, const void *t) const = 0;

    virtual void *load(IStreamArchiver &ar) const = 0;

    static const ArchiveEntry &find(const std::type_info &type);

    static const ArchiveEntry &find(const std::string &id);

    static const ArchiveEntry &find(const unsigned long long &hash);

    const std::string &getId(void) const;

    const unsigned long long &getHash(void) const;

private:
    const std::string _id;
    const unsigned long long _hash;
};

template <typename T>
struct ArchiveEntryT : ArchiveEntry
{
    ArchiveEntryT(const std::string &id);

    void save(OStreamArchiver &ar, const void *t) const;

    void *load(IStreamArchiver &ar) const;
};

} //namespace Archive
} //namespace Pothos

inline const std::string &Pothos::Archive::ArchiveEntry::getId(void) const
{
    return _id;
}

inline const unsigned long long &Pothos::Archive::ArchiveEntry::getHash(void) const
{
    return _hash;
}

template <typename T>
Pothos::Archive::ArchiveEntryT<T>::ArchiveEntryT(const std::string &id):
    ArchiveEntry(typeid(T), id)
{
    return;
}

template <typename T>
void Pothos::Archive::ArchiveEntryT<T>::save(OStreamArchiver &ar, const void *t) const
{
    ar << (*static_cast<const T *>(t));
}

template <typename T>
void *Pothos::Archive::ArchiveEntryT<T>::load(IStreamArchiver &ar) const
{
    T *t = new T();
    ar >> *t;
    return t;
}