X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_unification%2FcicMetaSubst.mli;h=730afcd10a23f092c0273adcaad2aa64dc66a625;hb=45bd3127b1ac786dc1ae14284b952fb503ba3094;hp=bfd2794129d12e25269d79e6f2857c53bbd5ea2b;hpb=cc3d3e3f697e06026680bc94988c782ddd8eb33e;p=helm.git

diff --git a/helm/ocaml/cic_unification/cicMetaSubst.mli b/helm/ocaml/cic_unification/cicMetaSubst.mli
index bfd279412..730afcd10 100644
--- a/helm/ocaml/cic_unification/cicMetaSubst.mli
+++ b/helm/ocaml/cic_unification/cicMetaSubst.mli
@@ -1,3 +1,27 @@
+(* 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/
+ *)
 
 exception AssertFailure of string
 exception MetaSubstFailure of string
@@ -6,6 +30,16 @@ exception MetaSubstFailure of string
 (* (META i) have been instantiated with t.      *)
 type substitution = (int * Cic.term) list
 
+val delift : 
+  int -> substitution -> Cic.context -> Cic.metasenv ->
+  (Cic.term option) list -> Cic.term ->
+    Cic.term * Cic.metasenv * substitution
+
+(* apply_subst subst t                     *)
+(* applies the substitution [subst] to [t] *)
+(* [subst] must be already unwinded        *)
+val apply_subst : substitution -> Cic.term -> Cic.term
+
 (* apply_subst_reducing subst (Some (mtr,reductions_no)) t              *)
 (* performs as (apply_subst subst t) until it finds an application of   *)
 (* (META [mtr]) that, once unwinding is performed, creates a new        *)
@@ -17,31 +51,27 @@ type substitution = (int * Cic.term) list
 (*  during the unwinding the eta-expansions are undone.                 *)
 (* [subst] must be already unwinded                                     *)
 val apply_subst_reducing :
- substitution -> (int * int) option -> Cic.term -> Cic.term
+ (int * int) option -> substitution -> Cic.term -> Cic.term
 
 val apply_subst_context : substitution -> Cic.context -> Cic.context
+val apply_subst_metasenv: substitution -> Cic.metasenv -> Cic.metasenv
 
-(* apply_subst subst t                     *)
-(* applies the substitution [subst] to [t] *)
-(* [subst] must be already unwinded        *)
-val apply_subst : substitution -> Cic.term -> Cic.term
-
-(* unwind_subst metasenv subst                         *)
-(* unwinds [subst] w.r.t. itself.                      *)
-(* It can restrict some metavariable in the [metasenv] *)
-val unwind_subst : Cic.metasenv -> substitution -> substitution * Cic.metasenv
-
-val delift : 
- Cic.context -> Cic.metasenv -> (Cic.term option) list -> Cic.term -> Cic.term * Cic.metasenv
+(** {2 Pretty printers} *)
 
 val ppcontext: ?sep: string -> substitution -> Cic.context -> string
-val ppmetasenv: ?sep: string -> substitution -> Cic.metasenv -> string
+val ppmetasenv: ?sep: string -> Cic.metasenv -> substitution -> string
 val ppsubst: substitution -> string
+val ppterm: substitution -> Cic.term -> string
 
-(* From now on we recreate a kernel abstraction where substitutions are part of
+(* {2 Kernel wrappers}
+ * From now on we recreate a kernel abstraction where substitutions are part of
  * the calculus *)
 
+val lift : substitution -> int -> Cic.term -> Cic.term
+val subst: substitution -> Cic.term -> Cic.term -> Cic.term
 val whd: substitution -> Cic.context -> Cic.term -> Cic.term
+val are_convertible: substitution -> Cic.context -> Cic.term -> Cic.term -> bool
+
 val type_of_aux':
   Cic.metasenv -> substitution -> Cic.context -> Cic.term -> Cic.term