Complex sentence: In a civil law country, a code of law typically exhaustively covers the complete system of law, such as civil law or criminal common law inoperative unless and until the code is repealed.
Split into simpler sentences: In a civil law country, a code of law typically exhaustively covers the complete system of law, such as civil law or criminal law. A code entirely replaces the common law in a particular area, leaving the common law inoperative unless and until the code is repealed.