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Pas de types abstraits en syntaxe revisee! #2357

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vicuna opened this issue Mar 18, 2004 · 2 comments
Closed

Pas de types abstraits en syntaxe revisee! #2357

vicuna opened this issue Mar 18, 2004 · 2 comments
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@vicuna
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vicuna commented Mar 18, 2004

Original bug ID: 2357
Reporter: administrator
Status: closed
Resolution: not a bug
Priority: normal
Severity: minor
Category: ~DO NOT USE (was: OCaml general)

Bug description

Full_Name: Francois Pottier
Version: 3.07+14 (2004-02-03)
OS: Linux
Submission from: madiran.inria.fr (128.93.8.77)

La syntaxe revisee ne semble pas permettre les types abstraits! Si on
regarde la definition de type_declaration dans meta/pa_r.ml, on s'apercoit
que seules les declarations de types concrets sont acceptees.

$ cat > essai.ml
module type S = sig
type t ;
end ;
$ camlp4 pa_r.cmo pr_o.cmo essai.ml
File "essai.ml", line 2, characters 9-10:
Parse error: [type_parameter] expected after [type_patt] (in
[type_declaration])

@vicuna
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vicuna commented Mar 18, 2004

Comment author: administrator

Date: Thu, 18 Mar 2004 15:11:34 +0100 (MET)
From: Francois.Pottier@inria.fr

La syntaxe revisee ne semble pas permettre les types abstraits!

$ cat > essai.ml
module type S = sig
type t ;
end ;
$ camlp4 pa_r.cmo pr_o.cmo essai.ml
File "essai.ml", line 2, characters 9-10:
Parse error: [type_parameter] expected after [type_patt] (in
[type_declaration])
Il me semble qu'il faut écrire:
type t = 'a;
(Tous ces problèmes ont la même recette: pretty-printer en révisé ce
qu'on sait exprimer en syntaxe classique).

Bruno.

@vicuna
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vicuna commented Mar 18, 2004

Comment author: administrator

Il me semble qu'il faut écrire:
type t = 'a;

En effet, ça marche, mais c'est vraiment horrible...

(Tous ces problèmes ont la même recette: pretty-printer en révisé ce
qu'on sait exprimer en syntaxe classique).

OK, je retiens l'idée, merci Bruno!

--
François Pottier
Francois.Pottier@inria.fr
http://pauillac.inria.fr/~fpottier/

@vicuna vicuna closed this as completed Apr 1, 2004
@vicuna vicuna added the bug label Mar 19, 2019
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