1 (* Copyright (C) 2004, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
26 exception MetaSubstFailure of string
27 exception Uncertain of string
28 exception AssertFailure of string
30 exception SubstNotFound of int
32 (* The entry (i,t) in a substitution means that *)
33 (* (META i) have been instantiated with t. *)
34 type substitution = (int * (Cic.context * Cic.term)) list
36 (** @raise SubstNotFound *)
37 val lookup_subst: int -> substitution -> Cic.context * Cic.term
39 (* apply_subst subst t *)
40 (* applies the substitution [subst] to [t] *)
41 (* [subst] must be already unwinded *)
42 val apply_subst : substitution -> Cic.term -> Cic.term
44 val apply_subst_context : substitution -> Cic.context -> Cic.context
45 val apply_subst_metasenv: substitution -> Cic.metasenv -> Cic.metasenv
47 (* {2 Kernel wrappers}
48 * From now on we recreate a kernel abstraction where substitutions are part of
51 val lift : substitution -> int -> Cic.term -> Cic.term
52 val subst: substitution -> Cic.term -> Cic.term -> Cic.term
53 val whd: substitution -> Cic.context -> Cic.term -> Cic.term
54 val are_convertible: substitution -> Cic.context -> Cic.term -> Cic.term -> bool
57 Cic.metasenv -> substitution -> Cic.context -> Cic.term -> Cic.term
59 val tempi_type_of_aux : float ref
60 val tempi_subst : float ref
61 val tempi_type_of_aux_subst : float ref
66 int -> substitution -> Cic.context -> Cic.metasenv ->
67 (Cic.term option) list -> Cic.term ->
68 Cic.term * Cic.metasenv * substitution
70 substitution -> (int * int) list -> Cic.metasenv ->
71 Cic.metasenv * substitution
72 (** {2 Pretty printers} *)
74 val ppsubst_unfolded: substitution -> string
75 val ppsubst: substitution -> string
76 val ppterm: substitution -> Cic.term -> string
77 val ppcontext: ?sep: string -> substitution -> Cic.context -> string
78 val ppterm_in_context:
79 substitution -> Cic.term -> (Cic.name option) list -> string
80 val ppmetasenv: ?sep: string -> Cic.metasenv -> substitution -> string
82 (** {2 Format-like pretty printers}
83 * As above with prototypes suitable for toplevel/ocamldebug printers. No
84 * subsitutions are applied here since such printers are required to be invoked
85 * with only one argument.
88 val fppsubst: Format.formatter -> substitution -> unit
89 val fppterm: Format.formatter -> Cic.term -> unit
90 val fppmetasenv: Format.formatter -> Cic.metasenv -> unit
94 val print_counters: unit -> unit
95 val reset_counters: unit -> unit
98 (* val clean_up_meta :
99 substitution -> Cic.metasenv -> Cic.term -> Cic.term