Celartem Imaging SDK for DjVu: cel_datatraits.h Source File

00001 //----------------------------------------------------------------------------
00004 //
00005 // (C) 2003-2006 Celartem Technology Inc. All rights reserved.
00006 //----------------------------------------------------------------------------
00007 
00008 #ifndef _cel_datatraits_h_
00009 #define _cel_datatraits_h_
00010 
00011 #include "cel_types.h"
00012 
00013 namespace Celartem
00014 {
00020     enum CopyPolicy
00021     {
00023         noCopy = 0,
00024 
00026         byConstructor = 1,
00027 
00030         byMemcpy = 2,
00031     };
00032 
00039     enum StoragePolicy
00040     {
00042         notToBeStored = 0,
00043 
00046         byCopyBytes = 1,
00047 
00050         bySwapCopyBytes = 2,
00051 
00054         byClassMethods = 3,
00055     };
00056 
00076     template<typename T> struct DataTraits
00077     {
00121         static const CopyPolicy copyPolicy = byConstructor;
00122 
00133         static const StoragePolicy storagePolicy = notToBeStored;
00134         
00140         static const bool isPOD = false;
00141     };
00142 
00156 #ifndef DONT_QUALIFY_SPECIALIZED_TEMPLATE
00157     #define CEL_DEFINE_DATATRAITS_EX(inType,inCopyPolicy,inStoragePolicy,isPod) \
00158         template<> struct ::Celartem::DataTraits<inType> {              \
00159             static const ::Celartem::CopyPolicy copyPolicy = ::Celartem::inCopyPolicy; \
00160             static const ::Celartem::StoragePolicy storagePolicy = ::Celartem::inStoragePolicy; \
00161             static const bool isPOD = isPod; \
00162         }
00163 #else // DONT_QUALIFY_SPECIALIZED_TEMPLATE
00164     #define CEL_DEFINE_DATATRAITS_EX(inType,inCopyPolicy,inStoragePolicy,isPod) \
00165         template<> struct DataTraits<inType> {              \
00166             static const ::Celartem::CopyPolicy copyPolicy = ::Celartem::inCopyPolicy; \
00167             static const ::Celartem::StoragePolicy storagePolicy = ::Celartem::inStoragePolicy; \
00168             static const bool isPOD = isPod; \
00169         }
00170 #endif // DONT_QUALIFY_SPECIALIZED_TEMPLATE
00171 
00183 #define CEL_DEFINE_DATATRAITS(inType,inCopyPolicy,inStoragePolicy) \
00184     CEL_DEFINE_DATATRAITS_EX(inType, inCopyPolicy, inStoragePolicy, false)
00185 
00192 #define CEL_DEFINE_DATATRAITS_POD(inType) \
00193     CEL_DEFINE_DATATRAITS_EX(inType, byMemcpy, bySwapCopyBytes, true)
00194 
00195     CEL_DEFINE_DATATRAITS_POD(char);
00196     CEL_DEFINE_DATATRAITS_POD(signed char);
00197     CEL_DEFINE_DATATRAITS_POD(short);
00198     CEL_DEFINE_DATATRAITS_POD(int);
00199     CEL_DEFINE_DATATRAITS_POD(long);
00200     CEL_DEFINE_DATATRAITS_POD(long long);
00201     CEL_DEFINE_DATATRAITS_POD(unsigned char);
00202     CEL_DEFINE_DATATRAITS_POD(unsigned short);
00203     CEL_DEFINE_DATATRAITS_POD(unsigned int);
00204     CEL_DEFINE_DATATRAITS_POD(unsigned long);
00205     CEL_DEFINE_DATATRAITS_POD(unsigned long long);
00206     CEL_DEFINE_DATATRAITS_POD(float);
00207     CEL_DEFINE_DATATRAITS_POD(double);
00208 
00209 } // namespace Celartem
00210 
00211 #endif // _cel_datatraits_h_