//
//  TransferBase.h
//  cocos2d_libs
//
//  Created by 徐俊杰 on 2020/6/11.
//

#ifndef TransferBase_h
#define TransferBase_h

//#include "cocos2d.h"
#include "rparticle/Macros/RParticleMacros.h"

NS_RRP_BEGIN

class TransferBase
{
public:
//    TransferBase();
//    ~TransferBase();

    /// If true, the transfer is reading data from a source. (Could be fread from a file or reading from a block of memory)
    /// @note There are transfers for which neither IsReading() nor IsWriting() is true (for example when generating a typetree).
    ///    IsReading is NOT the inverse of IsWriting.
    bool IsReading () { return false; }

    /// Are we transferring data with endianess swapping. (We might neither endianess swap on write or read based on IsReading / IsWriting)
    /// The endianess conversion is done by the TransferBackend, but there are some special cases where you might want to handle it yourself.
    /// (For example a texture data is transferred a single UInt8* array, so all endianess swapping is the responsibiltiy of the texture transfer function.)
    bool ConvertEndianess () { return false; }

    /// @name Versioning
    /// @{
    
    /// Sets the "version of the class currently transferred"
    void SetVersion (int) {}
    
    /// Returns if the transferred data's version is the version used by the source code
    bool IsVersionSmallerOrEqual (int /*version*/) { return false; }
    
    /// Deprecated: use IsVersionSmallerOrEqual instead.
    bool IsOldVersion (int /*version*/) { return false; }
    bool IsCurrentVersion () { return true; }
    
    /// @}

    /// @name Transfers
    /// @{
    
    /// Alignment in the serialization system is done manually.
    /// The serialization system only ever cares about 4 byte alignment.
    /// When writing data that has an alignment of less than 4 bytes, followed by data that has 4 byte alignment,
    /// then Align must be called before the 4 byte aligned data.
    /// TRANSFER (1byte);
    /// TRANSFER (1byte);
    /// transfer.Align ();
    /// TRANSFER (4byte);
    void Align () {}
    /// @}
    
private:
};

NS_RRP_END

#endif /* TransferBase_h */