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(*
Copyright © 2011 MLstate

This file is part of Opa.

Opa is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.

Opa is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.

You should have received a copy of the GNU Affero General Public License
along with Opa. If not, see <http://www.gnu.org/licenses/>.
*)

(**
This pass replaces every call to a module field (module.field) by its toplevel alias.
It first collects every toplevel declaration (corresponding to the module fields)
and stores it in an environment

Then it replaces every module.field by its corresponding toplevel identifier

Example :

{[
toplevel_empty = []
toplevel_add (x, y, m) = (x,y)::m
toplevel_find (x, m) = List.assoc (x, m)
rec toplevel_remove ((x,y),m) =
match m with
[] -> []
| hd::tl when hd <> (x,y) -> hd::(toplevel_remove ((x,y), tl))
| hd::tl -> toplevel_remove ((x,y) tl)

(* The module *)
map = \{\{
empty = toplevel_empty;
add = toplevel_add;
find = toplevel_find;
remove = toplevel_remove;
\}\}

my_map = map.empty
my_map = map.add (0, 'a', my_map)
my_map = map.remove ((0,'a'), my_map)
]}

The last part of the code is rewritten in

{[
my_map = toplevel_empty
my_map = toplevel_add (0, 'a', my_map)
my_map = toplevel_remove ((0,'a'), my_map)
]}

@author Esther Baruk
*)

val process_code :
  QmlTypes.gamma ->
  QmlAst.annotmap ->
  QmlAst.code ->
  (QmlTypes.gamma * QmlAst.annotmap) * QmlAst.code
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