I had the same experience in my compilers class at USF. Each assignment added layers on top of old assignments (lexer -> parser -> type checker -> codegen). I

I had the same experience in my compilers class at USF. Each assignment added layers on top of old assignments (lexer -> parser -> type checker -> codegen). I think it's an excellent strategy for helping students understand the importance of maintainability. Also, forcing you to revisit past assignments will help implant the concepts.