+++ /dev/null
-(* 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 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 *)
-(* beta-redex; in this case up to [reductions_no] consecutive *)
-(* beta-reductions are performed. *)
-(* Hint: this function is usually called when [reductions_no] *)
-(* eta-expansions have been performed and the head of the new *)
-(* application has been unified with (META [meta_to_reduce]): *)
-(* during the unwinding the eta-expansions are undone. *)
-(* [subst] must be already unwinded *)
-val apply_subst_reducing :
- (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
-
-(* {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 Pretty printers} *)
-
-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
-
-(** {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
-