wallet.dat seems to be empty but i have other files too

i have files from 2011 and i am trying to figure out if any of these are anything

wallet.dat is empty according to privatekeys pw

I have 2 random numbered files one .eml

I have

wallet.cpp

wallet.dat (empty according to privatekeys)

wallet.h

wallet_tests.cpp

walletdp.h

walletframe.cpp

walletmodel.h

walletmodel.cpp

walletmodel.h

walletstact.cpp

walletstack.h

walletview.cpp

walletview.h

are any of these useful or is this just redundant files, the wallet.dat is dated slightly newer than these so I want to be sure.