DebugFrontend

A common interface for a debug frontend for a debugger to present the debug tree. Inherit from one of the two provided subtraits to use.

Any compliant implementation that handles all nodes of a parsley.debugger.DebugTree can be used in place of any other implementation (e.g. a serialiser to JSON, a GUI, etc.).

If a frontend is reusable, one can implement it as either an object or a class, but an object is recommended. Either way, it should inherit ReusableFrontend.

If a frontend is single-use (e.g. it has some non-reusable state), never implement it as an object. Always implement single-use frontends as a class of some sort inheriting from SingleUseFrontend.

If the results of some processing of a tree are needed out of a frontend, create a frontend class that accepts some continuation parameter of ReturnType => Unit and call it somewhere within the implementation.