fork for Matita version B

[helm.git] / matitaB / components / ng_disambiguation / disambiguateChoices.ml

diff --git a/matitaB/components/ng_disambiguation/disambiguateChoices.ml b/matitaB/components/ng_disambiguation/disambiguateChoices.ml
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+(* Copyright (C) 2004, HELM Team.
+ * 
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ * 
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * HELM 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ * 
+ * For details, see the HELM World-Wide-Web page,
+ * http://helm.cs.unibo.it/
+ *)
+
+(* $Id$ *)
+
+open Printf
+
+open DisambiguateTypes
+
+exception Choice_not_found of string Lazy.t
+
+let has_description dsc = (fun x -> fst x = dsc)
+
+let nlookup_num_by_dsc dsc =
+ if dsc <> "natural number" then
+  raise (Choice_not_found (lazy ("Num with dsc " ^  dsc)))
+ else
+  "natural number", `Num_interp Nnumber_notation.ninterp_natural_number
+
+let mk_choice  ~mk_appl ~mk_implicit ~term_of_nref (dsc, args, appl_pattern)=
+  dsc,
+  `Sym_interp
+  (fun cic_args ->
+    let env',rest =
+      let names =
+        List.map (function NotationPt.IdentArg (_, name) -> name) args
+      in
+       let rec combine_with_rest l1 l2 =
+        match l1,l2 with
+           _::_,[] -> raise (Invalid_argument "combine_with_rest")
+         | [],rest -> [],rest
+         | he1::tl1,he2::tl2 ->
+            let l,rest = combine_with_rest tl1 tl2 in
+             (he1,he2)::l,rest
+       in
+        try
+         combine_with_rest names cic_args
+        with Invalid_argument _ ->
+         raise (Invalid_choice (lazy (Stdpp.dummy_loc, 
+           "The notation " ^ dsc ^ " expects more arguments")))
+    in
+     let combined =
+      Interpretations.instantiate_appl_pattern 
+        ~mk_appl ~mk_implicit ~term_of_nref env' appl_pattern
+     in
+      match rest with
+         [] -> combined
+       | _::_ -> mk_appl (combined::rest))
+
+let lookup_symbol_by_dsc status ~mk_appl ~mk_implicit ~term_of_nref symbol dsc =
+  let interpretations =
+   Interpretations.lookup_interpretations status ~sorted:false symbol in
+  try
+    mk_choice ~mk_appl ~mk_implicit ~term_of_nref
+      (List.find (fun (dsc', _, _) -> dsc = dsc') interpretations)
+  with Interpretations.Interpretation_not_found | Not_found ->
+    raise (Choice_not_found (lazy (sprintf "Symbol %s, dsc %s" symbol dsc)))