]> Hi, On Tue, Dec 10, 2002 at 07:33:23AM -0800, Ken Rose wrote: > and so on into gen_print_type. Or do I not understand what $uid:x$ > does? If x is a string <:expr< $uid:x$ >> produces "the uppercase identifier named by the value of x". If x is "Foo", this produces the identifier Foo. Notice that it works even if x does not contain an uppercase identifier: OCaml with interpret it as a module name or as a constructor name (depending on its position), whatever its value. Sorry, for your Baz.Baz.t, you need your <:ctyp< $uid:m2$.$uid:m$.$lid:s$ >> The better is to use an iterator, or use the recursion to treat the general case. > > In Revised syntax, they are like in normal syntax, but the parentheses > > are compulsory. > > Here, I want to match > type t = int * int > within gen_one_print_fun, to produce a printer instead of "failwith...". In Normal syntax, you can write "int * int" but inside the predefined quotations of AST, you have to use the Revised syntax. See the chapter about it in the reference manual. You must write it <:ctyp< (int * int) >>. And if tl is a list of ctyp, you can obtain the type tuple of this list of types with: <:ctyp< ($list:tl$) >> See the chapter about AST quotations. > > This message of OCaml just means that there are syntactic restrictions > > of the "let rec". In this case, you should produce either a "let" without > > "rec" or, an eta extension: "let rec print_t x = print_int x". > > I'd suspected that, though I'm still curious as to why that's so. Damien Doligez answered you on that point; this is typing and therefore not the work of Camlp4. > Still, what I really want is a generally useful tool to produce these > useful functions, without having to spend too much time right now > learning camlp4. It's for my regular work, where I'm building a > compiler for a DSL. I don't understand camlp4 well enough to know how > to suppress the "rec", and I'm hoping to avoid learning, at least for a > while. It's a great tool, but I have only so much time. Well, if you don't have time to look at it, I can help. -- Daniel de RAUGLAUDRE http://cristal.inria.fr/~ddr/ ------------------- 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