+(* 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
+exception Uncertain of string
+exception AssertFailure of string
(* The entry (i,t) in a substitution means that *)
(* (META i) have been instantiated with t. *)
type substitution = (int * Cic.term) list
+(* 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 *)
(* 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 ppsubst: substitution -> string
+val ppterm: substitution -> Cic.term -> string
+val ppcontext: ?sep: string -> substitution -> Cic.context -> string
+val ppterm_in_context:
+ substitution -> Cic.term -> (Cic.name option) list -> string
+val ppmetasenv: ?sep: string -> Cic.metasenv -> substitution -> 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
+val tempi_type_of_aux : float ref
+val tempi_type_of_aux_subst : float ref
+
+(*** delifting ***)
+
+val delift :
+ int -> substitution -> Cic.context -> Cic.metasenv ->
+ (Cic.term option) list -> Cic.term ->
+ Cic.term * Cic.metasenv * substitution
+
+(** {2 Format-like pretty printers}
+ * As above with prototypes suitable for toplevel/ocamldebug printers. No
+ * subsitutions are applied here since such printers are required to be invoked
+ * with only one argument.
+ *)
+
+val fppsubst: Format.formatter -> substitution -> unit
+val fppterm: Format.formatter -> Cic.term -> unit
+val fppmetasenv: Format.formatter -> Cic.metasenv -> unit