File visit order API #168
Description
Have an API to either:
- pre-visit some files
- communicate dependencies (please visit X before Y)
- fix a visit order
Usecase:
elm-review-codegen-simplify needs the list of functions in all the Gen.* modules before being able to generate errors for the non-Gen.* modules.
With the current implementation defined order, I need to generate all the errors in the final project evaluation, whereas if I could be sure that I've visited all then Gen.* modules before visiting all the non-Gen.* ones then I could use the normal workflow of generating errors from the module visitor.
In particular, I need to also visit modules that are not included, so "the modules are visited from the leaves to the root" would not be enough for this.