1 (* Copyright (C) 2002, HELM Team.
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4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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29 current proof (proof uri * metas * (in)complete proof * term to be prooved)
31 type proof = UriManager.uri option * Cic.metasenv * Cic.substitution * Cic.term * Cic.term * Cic.attribute list
32 (** current goal, integer index *)
34 type status = proof * goal
36 let initial_status ty metasenv attrs =
37 let rec aux max = function
39 | (idx, _, _) :: tl ->
45 let newmeta_idx = aux 0 metasenv in
48 None, (newmeta_idx, [], ty) :: metasenv, _subst, Cic.Meta (newmeta_idx, []), ty, attrs
53 a tactic: make a transition from one status to another one or, usually,
54 raise a "Fail" (@see Fail) exception in case of failure
56 (** an unfinished proof with the optional current goal *)
57 type tactic = status -> proof * goal list
59 (** creates an opaque tactic from a status->proof*goal list function *)
62 type reduction = Cic.context -> Cic.term -> Cic.term
64 let const_lazy_term t =
65 (fun _ metasenv ugraph -> t, metasenv, ugraph)
68 Cic.context -> Cic.metasenv -> CicUniv.universe_graph ->
69 reduction * Cic.metasenv * CicUniv.universe_graph
71 let const_lazy_reduction red =
72 (fun _ metasenv ugraph -> red, metasenv, ugraph)
74 type ('term, 'lazy_term) pattern =
75 'lazy_term option * (string * 'term) list * 'term option
77 type lazy_pattern = (Cic.term, Cic.lazy_term) pattern
79 let hole = Cic.Implicit (Some `Hole)
81 let conclusion_pattern t =
85 | Some t -> Some (const_lazy_term t)
90 exception Fail of string Lazy.t
93 calls the opaque tactic on the status
95 let apply_tactic t status =
96 let (uri,metasenv,subst,bo,ty, attrs), gl = t status in
98 CicRefine.pack_coercion_obj
99 (Cic.CurrentProof ("",metasenv,Cic.Rel ~-1,ty,[],attrs))
101 | Cic.CurrentProof (_,metasenv,_,ty,_, attrs) ->
102 (uri,metasenv,subst,bo,ty, attrs), gl
106 (** constraint: the returned value will always be constructed by Cic.Name **)
107 type mk_fresh_name_type =
108 Cic.metasenv -> Cic.context -> Cic.name -> typ:Cic.term -> Cic.name
110 let goals_of_proof (_,metasenv,_subst,_,_,_) = List.map (fun (g,_,_) -> g) metasenv