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Diffstat (limited to 'contrib/xml/unshare.ml')
| -rw-r--r-- | contrib/xml/unshare.ml | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/contrib/xml/unshare.ml b/contrib/xml/unshare.ml deleted file mode 100644 index f30f8230..00000000 --- a/contrib/xml/unshare.ml +++ /dev/null @@ -1,52 +0,0 @@ -(************************************************************************) -(* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *) -(* \VV/ **************************************************************) -(* // * The HELM Project / The EU MoWGLI Project *) -(* * University of Bologna *) -(************************************************************************) -(* This file is distributed under the terms of the *) -(* GNU Lesser General Public License Version 2.1 *) -(* *) -(* Copyright (C) 2000-2004, HELM Team. *) -(* http://helm.cs.unibo.it *) -(************************************************************************) - -exception CanNotUnshare;; - -(* [unshare t] gives back a copy of t where all sharing has been removed *) -(* Physical equality becomes meaningful on unshared terms. Hashtables that *) -(* use physical equality can now be used to associate information to evey *) -(* node of the term. *) -let unshare ?(already_unshared = function _ -> false) t = - let obj = Obj.repr t in - let rec aux obj = - if already_unshared (Obj.obj obj) then - obj - else - (if Obj.is_int obj then - obj - else if Obj.is_block obj then - begin - let tag = Obj.tag obj in - if tag < Obj.no_scan_tag then - begin - let size = Obj.size obj in - let new_obj = Obj.new_block 0 size in - Obj.set_tag new_obj tag ; - for i = 0 to size - 1 do - Obj.set_field new_obj i (aux (Obj.field obj i)) - done ; - new_obj - end - else if tag = Obj.string_tag then - obj - else - raise CanNotUnshare - end - else - raise CanNotUnshare - ) - in - Obj.obj (aux obj) -;; |