Martchus
/
lmdb-safe
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

to work around clang issue, keyConv is now very ugly, but completely generic

This commit is contained in:
bert hubert 2019-01-05 14:40:28 +01:00
parent 505d31fd89
commit 7dac111b02
1 changed files with 12 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
lmdb-typed.hh
View File

@ -67,38 +67,23 @@ void serFromString(const std::string& str, T& ret)
*/
}
// mini-serializer for keys. Again, you can override
template<typename KeyType>
std::string keyConv(const KeyType& t);
template<>
inline std::string keyConv(const std::string& t)
template <class T, class Enable>
inline std::string keyConv(const T& t);
template <class T, typename std::enable_if<std::is_arithmetic<T>::value,T>::type* = nullptr>
inline std::string keyConv(const T& t)
{
return std::string((char*)&t, sizeof(t));
}
// this is how to override specific types.. it is ugly
template<class T, typename std::enable_if<std::is_same<T, std::string>::value,T>::type* = nullptr>
inline std::string keyConv(const T& t)
{
return t;
}
template<>
inline std::string keyConv(const uint32_t& t)
{
return std::string((char*)&t, sizeof(t));
}
template<>
inline std::string keyConv(const int32_t& t)
{
return std::string((char*)&t, sizeof(t));
}
template<>
inline std::string keyConv(const uint64_t& t)
{
return std::string((char*)&t, sizeof(t));
}
template<>
inline std::string keyConv(const int64_t& t)
{
return std::string((char*)&t, sizeof(t));
}
/** This is a struct that implements index operations, but
only the operations that are broadcast to all indexes.