1 (* Copyright (C) 2002, 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.
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15 * GNU General Public License for more details.
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22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 let new_meta_of_proof ~proof:(_, metasenv, _, _) =
27 CicMkImplicit.new_meta metasenv
29 let subst_meta_in_proof proof meta term newmetasenv =
30 let uri,metasenv,bo,ty = proof in
31 let subst_in = CicMetaSubst.apply_subst [meta,term] in
33 newmetasenv @ (List.filter (function (m,_,_) -> m <> meta) metasenv)
37 (function i,canonical_context,ty ->
38 let canonical_context' =
41 Some (n,Cic.Decl s) -> Some (n,Cic.Decl (subst_in s))
42 | Some (n,Cic.Def (s,None)) -> Some (n,Cic.Def ((subst_in s),None))
44 | Some (_,Cic.Def (_,Some _)) -> assert false
47 i,canonical_context',(subst_in ty)
50 let bo' = subst_in bo in
51 (* Metavariables can appear also in the *statement* of the theorem
52 * since the parser does not reject as statements terms with
53 * metavariable therein *)
54 let ty' = subst_in ty in
55 let newproof = uri,metasenv'',bo',ty' in
56 (newproof, metasenv'')
58 (*CSC: commento vecchio *)
59 (* refine_meta_with_brand_new_metasenv meta term subst_in newmetasenv *)
60 (* This (heavy) function must be called when a tactic can instantiate old *)
61 (* metavariables (i.e. existential variables). It substitues the metasenv *)
62 (* of the proof with the result of removing [meta] from the domain of *)
63 (* [newmetasenv]. Then it replaces Cic.Meta [meta] with [term] everywhere *)
64 (* in the current proof. Finally it applies [apply_subst_replacing] to *)
66 (*CSC: A questo punto perche' passare un bo' gia' istantiato, se tanto poi *)
67 (*CSC: ci ripasso sopra apply_subst!!! *)
68 (*CSC: Attenzione! Ora questa funzione applica anche [subst_in] a *)
69 (*CSC: [newmetasenv]. *)
70 let subst_meta_and_metasenv_in_proof proof meta subst_in newmetasenv =
71 let (uri,_,bo,ty) = proof in
72 let bo' = subst_in bo in
73 (* Metavariables can appear also in the *statement* of the theorem
74 * since the parser does not reject as statements terms with
75 * metavariable therein *)
76 let ty' = subst_in ty in
79 (fun metasenv_entry i ->
80 match metasenv_entry with
81 (m,canonical_context,ty) when m <> meta ->
82 let canonical_context' =
86 | Some (i,Cic.Decl t) -> Some (i,Cic.Decl (subst_in t))
87 | Some (i,Cic.Def (t,None)) ->
88 Some (i,Cic.Def ((subst_in t),None))
89 | Some (_,Cic.Def (_,Some _)) -> assert false
92 (m,canonical_context',subst_in ty)::i
96 let newproof = uri,metasenv',bo',ty' in