Re: [PATCH 2/5] revision.c: group ref selection options together

On Thu, Jan 26, 2017 at 04:18:06PM +0700, Duy Nguyen wrote:

quoted

Hmm. I see what you're trying to do here, and abstract the repeated
bits. But I'm not sure the line-count reflects a real simplification.
Everything ends up converted to an enum, and then that enum just expands
to similar C code.

It's not simplification, but hopefully for better maintainability. This

if (strcmp(arg, "--remotes")) {
   if (preceded_by_exclide())
      does_something();
   else if (preceded_by_decorate())
      does_another()
} else if (strcmp(arg, "--branches")) {
   if (preceded_by_exclide())
      does_something();
   else if (preceded_by_decorate())
      does_another()
}

starts to look ugly especially when the third "preceded_by_" comes
into picture. Putting all "does_something" in one group and
"does_another" in another, I think, gives us a better view how ref
selection is handled for a specific operation like --exclude or
--decorate-ref.

I agree that would be ugly. But the current structure, which is:

  if (strcmp(arg, "--remotes")) {
          handle_refs(...);
	  cleanup();
  } else if(...) {
          handle_refs(...);
	  cleanup();
  }

does not seem so bad, and pushes those conditionals into the
handle_refs() function, where they only need to be expressed once (I
didn't look, but I wonder if you could push the cleanup steps in there,
too, or if there is a caller who wants to handle() multiple times before
cleaning up).

-Peff