Re: [Caml-list] Parse error with camlp4 while sources compile

[Andrea Giugliano <ag400@leicester.ac.uk>]

Hello,

thanks a lot for your help!
This solved my problem, and I learned also that it is bad style to write 
module names.
Thanks again,

Andrea

On 13/08/14 17:28, Gabriel Scherer wrote:
> Camlp4 uses a different parser technology than the OCaml compiler, so
> it warns about syntax errors in a different way. It happens sometimes
> to be wrong, but it is most of the time right, and gives relatively
> good error message. (In case there is a discrepancy between what the
> compiler accepts and Camlp4 accept, I recommend that you write code
> accepted by both.)
>
> module A (AO : a) : sig
>> Parse error: [module_type] expected after ":" (in [module_declaration])
> Module type names, as module names, must start with an uppercase
> letter. Rename the signature into A or ASig, and you will be fine (for
> this particular error).
>
> On Wed, Aug 13, 2014 at 5:30 PM, Andrea Giugliano <ag400@leicester.ac.uk> wrote:
>> Dear list,
>>
>> I am trying to test my ocaml application using a test coverage tool called
>> bisect (http://bisect.x9c.fr/index.html).
>> This tool uses camlp4 to instrument the source code, i.e. adding the check
>> points to say that the source code has been explored by the tests.
>> When I try to instrument my application, I get the following error from
>> camlp4:
>>
>> Parse error: [module_type] expected after ":" (in [module_declaration])
>> Error while running external preprocessor
>>
>> Is it possible that camlp4 does not support the functor feature of OCaml?
>> Has anyone had this error before?
>>
>> I googled for the error string and similar errors, but I could not find
>> anything promising.
>> I also searched the archives of this mailing list and the wg-camlp4 mailing
>> list, but nothing similar was present.
>> The following source files raise the same error (they successfully compile
>> though!):
>>
>> (* test.mli -------------- *)
>>
>> module type a = sig
>>      type t
>> end
>>
>> module A (AO : a) : sig
>>      val f : AO.t -> bool
>> end
>>
>> (* test.ml --------------- *)
>>
>> module type a = sig
>>      type t
>> end
>>
>> module A (AO : a) = struct
>>      let f ( x : AO.t) = true
>> end
>>
>> let _ = print_endline "test"
>> (* ------------------------- *)
>>
>> I attached them and the Makefile that I am using to create the executable.
>> If you want to reproduce the error, you need to have installed Ocaml 4.01,
>> ocamlfind and the last version of bisect
>> (the most comfortable installation is through OPAM:
>>      opam install ocamlfind
>>      opam install bisect).
>> Thanks for your attention,
>>
>> Andrea Giugliano
>>
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