>>10
まあ、大変だろうね。開発者の苦労は知らないがこんなことが出来るらしい。

http://www.wholetomato.com/products/featureRefactoring.asp
Rename
Extract Method
Encapsulate Field
Change Signature
Move Implementation to Source File
Add Member
Add Similar Member
Document Method
Create Declaration
Create Implementation
Create from Usage
Implement Interface / Virtual Methods