Re: [Caml-list] ocamldep & compilation units

[Gerd Stolpmann <info@gerd-stolpmann.de>]

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Am Freitag, den 02.01.2015, 15:03 +0100 schrieb Remco Vermeulen:
> So my question is. is BAR in the above example correctly identified as a compilation unit by ocamldep?

The syntax doesn't allow an unambiguous identification, so ocamldep
needs to take into account that BAR is a compilation unit. It doesn't
follow "open" when doing this, and I guess this is the point that
confuses you.

The problem is that "ocamldep -modules" by definition can only analyze a
single module. The output is imprecise, however, and possible
inter-module effects are not taken into account (among other things). A
precise output would list BAR with the exception that it might be
shadowed by Foo.

But imagine now we had the information with this degree of detail. As
omake wants to figure out the dependencies it would have to solve a
puzzle. In your case it is easily to solve, but in practice there are
often several "open" directives, and in this case you don't even know
whether "open Foo" opens a compilation unit. I am not sure whether a
well-performing algorithm even exists (did anybody tackle this
problem?).

The workaround is to use naming schemes that allow you to clearly
distinguish between local modules and compilation unit (e.g. all your
local modules have 1-3 characters, and all compilation units have longer
names).

Gerd
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Gerd Stolpmann, Darmstadt, Germany    gerd@gerd-stolpmann.de
My OCaml site:          http://www.camlcity.org
Contact details:        http://www.camlcity.org/contact.html
Company homepage:       http://www.gerd-stolpmann.de
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