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Date: | 2002-05-18 (07:05) |
From: | Dmitry Bely <dbely@m...> |
Subject: | Re: [Caml-list] CamlIDL and true abstract types |
Lauri Alanko <la@iki.fi> writes: > Hello. I recently learned of CamlIDL (thanks to the list), and tried it out. > After trying it out for a while, it seems to me that an absolutely essential > feature is missing: abstract types. > > With an abstract type I mean a type whose representation is known neither at > the C side nor in the caml world. Typically these are of the form: > > typedef struct Foo_ Foo; > > Where the actual definition of struct Foo_ is completely missing from public > headers, or even if it is not, its structure is supposed to be an > implementation detail. These sorts of types are needed often enough in many > bindings, and the Caml translation for Foo* should be clear: > > type foo > > Yet somehow there seems to be no direct way for doing this within > CamlIDL. Read the manual more carefully :-) typedef [abstract] void* Foo; is what you need. Don't miss also finalize() attribute; it may be quite useful for you. Hope to hear from you soon, Dmitry ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners