author | wenzelm |
Thu, 16 Feb 2006 18:26:01 +0100 | |
changeset 19077 | c36eb33c8428 |
parent 19059 | b4ca3100e818 |
child 19370 | b048aa441c34 |
permissions | -rw-r--r-- |
18744 | 1 |
(* Title: Pure/Isar/local_theory.ML |
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ID: $Id$ |
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Author: Makarius |
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Local theory operations, with optional target locale. |
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*) |
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type local_theory = Proof.context; |
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signature LOCAL_THEORY = |
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sig |
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val params_of: local_theory -> (string * typ) list |
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val hyps_of: local_theory -> term list |
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val standard: local_theory -> thm -> thm |
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val pretty_consts: local_theory -> (string * typ -> bool) -> (string * typ) list -> Pretty.T |
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val quiet_mode: bool ref |
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val print_consts: local_theory -> (string * typ -> bool) -> (string * typ) list -> unit |
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val theory: (theory -> theory) -> local_theory -> local_theory |
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val theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory |
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val init: xstring option -> theory -> local_theory |
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val init_i: string option -> theory -> local_theory |
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val restore: local_theory -> local_theory |
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val exit: local_theory -> local_theory * theory |
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val restore_naming: local_theory -> local_theory |
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val naming: local_theory -> local_theory |
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val mapping: xstring option -> (local_theory -> local_theory) -> theory -> local_theory * theory |
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val consts: ((bstring * typ) * mixfix) list -> local_theory -> term list * local_theory |
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val consts_restricted: (string * typ -> bool) -> |
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((bstring * typ) * mixfix) list -> local_theory -> term list * local_theory |
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val axioms: ((bstring * Attrib.src list) * term list) list -> local_theory -> |
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(bstring * thm list) list * local_theory |
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val axioms_finish: (local_theory -> thm -> thm) -> |
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((bstring * Attrib.src list) * term list) list -> local_theory -> |
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(bstring * thm list) list * local_theory |
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val notes: string -> ((bstring * Attrib.src list) * (thm list * Attrib.src list) list) list -> |
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local_theory -> (bstring * thm list) list * local_theory |
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val note: (bstring * Attrib.src list) * thm list -> local_theory -> |
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(bstring * thm list) * local_theory |
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val def: (bstring * mixfix) * ((bstring * Attrib.src list) * term) -> |
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local_theory -> (term * (bstring * thm)) * local_theory |
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val def_finish: (local_theory -> term -> thm -> thm) -> |
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(bstring * mixfix) * ((bstring * Attrib.src list) * term) -> |
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local_theory -> (term * (bstring * thm)) * local_theory |
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val abbrev: bool -> (bstring * mixfix) * term -> local_theory -> local_theory |
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end; |
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structure LocalTheory: LOCAL_THEORY = |
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struct |
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(** local context data **) |
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structure Data = ProofDataFun |
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( |
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val name = "Pure/local_theory"; |
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type T = |
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{locale: (string * (cterm list * Proof.context)) option, |
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params: (string * typ) list, |
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hyps: term list, |
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restore_naming: theory -> theory}; |
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fun init thy = {locale = NONE, params = [], hyps = [], restore_naming = I}; |
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fun print _ _ = (); |
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); |
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val _ = Context.add_setup Data.init; |
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||
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fun map_locale f = Data.map (fn {locale, params, hyps, restore_naming} => |
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{locale = Option.map (fn (loc, (view, ctxt)) => (loc, (view, f ctxt))) locale, |
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params = params, hyps = hyps, restore_naming = restore_naming}); |
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val locale_of = #locale o Data.get; |
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val params_of = #params o Data.get; |
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val hyps_of = #hyps o Data.get; |
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fun standard ctxt = |
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(case #locale (Data.get ctxt) of |
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NONE => Drule.standard |
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| SOME (_, (_, loc_ctxt)) => ProofContext.export_standard ctxt loc_ctxt); |
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(* print consts *) |
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val quiet_mode = ref false; |
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local |
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fun pretty_var ctxt (x, T) = |
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Pretty.block [Pretty.str x, Pretty.str " ::", Pretty.brk 1, |
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Pretty.quote (ProofContext.pretty_typ ctxt T)]; |
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fun pretty_vars ctxt kind vs = Pretty.big_list kind (map (pretty_var ctxt) vs); |
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in |
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fun pretty_consts ctxt pred cs = |
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(case filter pred (params_of ctxt) of |
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[] => pretty_vars ctxt "constants" cs |
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| ps => Pretty.chunks [pretty_vars ctxt "parameters" ps, pretty_vars ctxt "constants" cs]); |
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fun print_consts _ _ [] = () |
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| print_consts ctxt pred cs = |
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if ! quiet_mode then () else Pretty.writeln (pretty_consts ctxt pred cs); |
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end; |
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(* theory/locale substructures *) |
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fun theory_result f ctxt = |
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let val (res, thy') = f (ProofContext.theory_of ctxt) |
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in (res, ctxt |> map_locale (ProofContext.transfer thy') |> ProofContext.transfer thy') end; |
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fun theory f ctxt = #2 (theory_result (f #> pair ()) ctxt); |
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fun locale_result f ctxt = |
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(case locale_of ctxt of |
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NONE => error "Local theory: no locale context" |
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| SOME (_, view_ctxt) => |
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let |
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val (res, loc_ctxt') = f view_ctxt; |
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val thy' = ProofContext.theory_of loc_ctxt'; |
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in (res, ctxt |> map_locale (K loc_ctxt') |> ProofContext.transfer thy') end); |
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fun locale f ctxt = |
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if is_none (locale_of ctxt) then ctxt |
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else #2 (locale_result (f #> pair ()) ctxt); |
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(* init -- restore -- exit *) |
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fun init_i NONE thy = ProofContext.init thy |
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| init_i (SOME loc) thy = |
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thy |
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|> Locale.init loc |
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||>> ProofContext.inferred_fixes |
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|> (fn ((view, params), ctxt) => Data.put |
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{locale = SOME (loc, (view, ctxt)), |
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params = params, |
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hyps = ProofContext.assms_of ctxt, |
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restore_naming = Sign.restore_naming thy} ctxt); |
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fun init loc thy = init_i (Option.map (Locale.intern thy) loc) thy; |
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fun restore ctxt = |
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(case locale_of ctxt of |
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NONE => ctxt |
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| SOME (_, (_, loc_ctxt)) => loc_ctxt |> Data.put (Data.get ctxt)); |
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fun exit ctxt = (ctxt, ProofContext.theory_of ctxt); |
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(* local naming *) |
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fun naming ctxt = |
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(case locale_of ctxt of |
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NONE => ctxt |
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| SOME (loc, _) => ctxt |> theory (Sign.sticky_prefix (Sign.base_name loc))); |
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fun restore_naming ctxt = theory (#restore_naming (Data.get ctxt)) ctxt; |
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fun mapping loc f = |
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init loc #> naming #> f #> restore_naming #> exit; |
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(** local theory **) |
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(* consts *) |
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fun consts_restricted pred decls ctxt = |
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let |
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val thy = ProofContext.theory_of ctxt; |
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val params = filter pred (params_of ctxt); |
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val ps = map Free params; |
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val Ps = map #2 params; |
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val abbrevs = decls |> map (fn ((c, T), mx) => |
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let val t = Term.list_comb (Const (Sign.full_name thy c, Ps ---> T), ps) |
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in (c, t, mx) end); |
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in |
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ctxt |> |
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(case locale_of ctxt of |
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NONE => theory (Sign.add_consts_i (map (fn ((c, T), mx) => (c, T, mx)) decls)) |
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| SOME (loc, _) => |
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theory (Sign.add_consts_i (map (fn ((c, T), _) => (c, Ps ---> T, NoSyn)) decls)) #> |
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locale (Locale.add_abbrevs loc true abbrevs) #> |
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ProofContext.add_abbrevs_i true abbrevs) |
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|> pair (map #2 abbrevs) |
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end; |
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val consts = consts_restricted (K true); |
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(* fact definitions *) |
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fun notes kind facts ctxt = |
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let |
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val attrib = Attrib.attribute_i (ProofContext.theory_of ctxt); |
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val facts' = map (apsnd (map (apfst (map (standard ctxt))))) facts; |
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in |
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ctxt |> |
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(case locale_of ctxt of |
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NONE => theory_result (PureThy.note_thmss_i kind (Attrib.map_facts attrib facts')) |
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| SOME (loc, _) => |
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locale_result (apfst #1 o Locale.add_thmss kind loc facts')) |
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||> (#2 o ProofContext.note_thmss_i (Attrib.map_facts attrib facts)) |
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end; |
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fun note (a, ths) ctxt = |
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ctxt |> notes PureThy.theoremK [(a, [(ths, [])])] |>> hd; |
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(* axioms *) |
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local |
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fun add_axiom hyps (name, prop) thy = |
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let |
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val name' = if name = "" then "axiom_" ^ string_of_int (serial ()) else name; |
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val frees = rev ([] |> Term.add_frees prop |> fold Term.add_frees hyps); |
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val prop' = Term.list_all_free (frees, Logic.list_implies (hyps, prop)); |
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val thy' = thy |> Theory.add_axioms_i [(name', prop')]; |
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val cert = Thm.cterm_of thy'; |
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fun all_polymorphic (x, T) th = |
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let val var = cert (Var ((x, 0), #1 (Logic.dest_all (Thm.prop_of th)))) |
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in ((var, cert (Free (x, T))), Thm.forall_elim var th) end; |
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fun implies_polymorphic hyp th = Thm.assume (cert hyp) COMP th; |
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val th = |
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Thm.get_axiom_i thy' (Sign.full_name thy' name') |
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|> fold_map all_polymorphic frees |-> Drule.cterm_instantiate |
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|> fold implies_polymorphic hyps |
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in (th, thy') end; |
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||
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in |
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fun axioms_finish finish = fold_map (fn ((name, atts), props) => |
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fold ProofContext.fix_frees props |
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#> (fn ctxt => ctxt |
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|> theory_result (fold_map (add_axiom (hyps_of ctxt)) (PureThy.name_multi name props)) |
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|-> (fn ths => note ((name, atts), map (finish ctxt) ths)))); |
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val axioms = axioms_finish (K I); |
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end; |
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(* constant definitions *) |
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local |
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fun add_def (name, prop) = |
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Theory.add_defs_i false [(name, prop)] #> (fn thy => |
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let |
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val th = Thm.get_axiom_i thy (Sign.full_name thy name); |
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val cert = Thm.cterm_of thy; |
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parents:
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changeset
|
255 |
val subst = map2 (fn var => fn free => (cert (Var var), cert (Free free))) |
18863b33c831
improved 'notes', including proper treatment of locale results;
wenzelm
parents:
18781
diff
changeset
|
256 |
(Term.add_vars (Thm.prop_of th) []) (Term.add_frees prop []); |
18863b33c831
improved 'notes', including proper treatment of locale results;
wenzelm
parents:
18781
diff
changeset
|
257 |
in (Drule.cterm_instantiate subst th, thy) end); |
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|
259 |
in |
|
260 |
||
18805
18863b33c831
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wenzelm
parents:
18781
diff
changeset
|
261 |
fun def_finish finish (var, spec) ctxt = |
18781 | 262 |
let |
263 |
val (x, mx) = var; |
|
264 |
val ((name, atts), rhs) = spec; |
|
265 |
val name' = if name = "" then Thm.def_name x else name; |
|
18876 | 266 |
val rhs_frees = Term.add_frees rhs []; |
18781 | 267 |
in |
268 |
ctxt |
|
18876 | 269 |
|> consts_restricted (member (op =) rhs_frees) [((x, Term.fastype_of rhs), mx)] |
18781 | 270 |
|-> (fn [lhs] => |
271 |
theory_result (add_def (name', Logic.mk_equals (lhs, rhs))) |
|
272 |
#-> (fn th => fn ctxt' => note ((name', atts), [finish ctxt' lhs th]) ctxt') |
|
273 |
#> apfst (fn (b, [th]) => (lhs, (b, th)))) |
|
274 |
end; |
|
275 |
||
18805
18863b33c831
improved 'notes', including proper treatment of locale results;
wenzelm
parents:
18781
diff
changeset
|
276 |
val def = def_finish (K (K I)); |
18863b33c831
improved 'notes', including proper treatment of locale results;
wenzelm
parents:
18781
diff
changeset
|
277 |
|
18781 | 278 |
end; |
279 |
||
19077 | 280 |
|
281 |
(* constant abbreviations *) |
|
282 |
||
283 |
fun abbrev revert ((x, mx), rhs) ctxt = |
|
284 |
let val abbrevs = [(x, rhs, mx)] in |
|
285 |
ctxt |> |
|
286 |
(case locale_of ctxt of |
|
287 |
NONE => |
|
288 |
theory (Sign.add_abbrevs_i revert abbrevs) |
|
289 |
| SOME (loc, _) => |
|
290 |
locale (Locale.add_abbrevs loc revert abbrevs) #> |
|
291 |
ProofContext.add_abbrevs_i revert abbrevs) |
|
292 |
end; |
|
293 |
||
18781 | 294 |
end; |