[Chisel/scala] class Module is abstract; cannot be instantiated

Phenomenon

The following chisel code causes the compilation error:

val parts = new Module(new MyParts())

class Module is abstract; cannot be instantiated

Causes and Solutions

This is because I added "new" to Module().

Adding "new" to the class is interpreted as a constructor, but since Module is an abstract class, it does not have a constructor, which leads to the above error.

The following is correct.

val parts = Module(new MyParts())

If you do not add new, this is interpreted as a factory method and no compilation error occurs.