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-(***********************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
-(* \VV/ *************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
-(***********************************************************************)
-
-(*i $Id: g_string_syntax.ml 10739 2008-04-01 14:45:20Z herbelin $ i*)
-
-open Pp
-open Util
-open Names
-open Pcoq
-open Libnames
-open Topconstr
-open G_ascii_syntax
-open Rawterm
-open Coqlib
-
-exception Non_closed_string
-
-(* make a string term from the string s *)
-
-let string_module = ["Coq";"Strings";"String"]
-
-let string_path = make_path string_module "string"
-
-let string_kn = make_kn string_module "string"
-let static_glob_EmptyString = ConstructRef ((string_kn,0),1)
-let static_glob_String = ConstructRef ((string_kn,0),2)
-
-let make_reference id = find_reference "String interpretation" string_module id
-let glob_String = lazy (make_reference "String")
-let glob_EmptyString = lazy (make_reference "EmptyString")
-
-open Lazy
-
-let interp_string dloc s =
- let le = String.length s in
- let rec aux n =
- if n = le then RRef (dloc, force glob_EmptyString) else
- RApp (dloc,RRef (dloc, force glob_String),
- [interp_ascii dloc (int_of_char s.[n]); aux (n+1)])
- in aux 0
-
-let uninterp_string r =
- try
- let b = Buffer.create 16 in
- let rec aux = function
- | RApp (_,RRef (_,k),[a;s]) when k = force glob_String ->
- (match uninterp_ascii a with
- | Some c -> Buffer.add_char b (Char.chr c); aux s
- | _ -> raise Non_closed_string)
- | RRef (_,z) when z = force glob_EmptyString ->
- Some (Buffer.contents b)
- | _ ->
- raise Non_closed_string
- in aux r
- with
- Non_closed_string -> None
-
-let _ =
- Notation.declare_string_interpreter "string_scope"
- (string_path,["Coq";"Strings";"String"])
- interp_string
- ([RRef (dummy_loc,static_glob_String);
- RRef (dummy_loc,static_glob_EmptyString)],
- uninterp_string, true)