author | haftmann |
Mon, 19 Jan 2009 08:16:42 +0100 | |
changeset 29558 | 9846af6c6d6a |
parent 29545 | 4be5e49c74b1 |
child 29577 | 08f783c5fcf0 |
permissions | -rw-r--r-- |
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(* Title: Pure/Isar/class_target.ML |
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Author: Florian Haftmann, TU Muenchen |
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Type classes derived from primitive axclasses and locales - mechanisms. |
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*) |
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signature CLASS_TARGET = |
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sig |
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(*classes*) |
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val register: class -> class list -> ((string * typ) * (string * typ)) list |
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-> sort -> morphism -> thm option -> thm option -> thm |
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-> theory -> theory |
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val register_subclass: class * class -> morphism option -> Element.witness option |
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-> morphism -> theory -> theory |
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val is_class: theory -> class -> bool |
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val base_sort: theory -> class -> sort |
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val rules: theory -> class -> thm option * thm |
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val these_params: theory -> sort -> (string * (class * (string * typ))) list |
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val these_defs: theory -> sort -> thm list |
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val print_classes: theory -> unit |
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val begin: class list -> sort -> Proof.context -> Proof.context |
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val init: class -> theory -> Proof.context |
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val declare: class -> Properties.T |
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-> (string * mixfix) * term -> theory -> theory |
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val abbrev: class -> Syntax.mode -> Properties.T |
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-> (string * mixfix) * term -> theory -> theory |
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val class_prefix: string -> string |
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val refresh_syntax: class -> Proof.context -> Proof.context |
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(*instances*) |
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val init_instantiation: string list * (string * sort) list * sort |
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-> theory -> local_theory |
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val instantiation_instance: (local_theory -> local_theory) |
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-> local_theory -> Proof.state |
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val prove_instantiation_instance: (Proof.context -> tactic) |
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-> local_theory -> local_theory |
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val prove_instantiation_exit: (Proof.context -> tactic) |
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-> local_theory -> theory |
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val prove_instantiation_exit_result: (morphism -> 'a -> 'b) |
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-> (Proof.context -> 'b -> tactic) -> 'a -> local_theory -> 'b * theory |
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val conclude_instantiation: local_theory -> local_theory |
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val instantiation_param: local_theory -> string -> string option |
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val confirm_declaration: string -> local_theory -> local_theory |
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val pretty_instantiation: local_theory -> Pretty.T |
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val type_name: string -> string |
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val intro_classes_tac: thm list -> tactic |
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val default_intro_tac: Proof.context -> thm list -> tactic |
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(*old axclass layer*) |
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val axclass_cmd: bstring * xstring list |
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-> (Attrib.binding * string list) list |
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-> theory -> class * theory |
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val classrel_cmd: xstring * xstring -> theory -> Proof.state |
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(*old instance layer*) |
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val instance_arity: (theory -> theory) -> arity -> theory -> Proof.state |
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val instance_arity_cmd: bstring * xstring list * xstring -> theory -> Proof.state |
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end; |
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structure Class_Target : CLASS_TARGET = |
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struct |
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(** primitive axclass and instance commands **) |
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fun axclass_cmd (class, raw_superclasses) raw_specs thy = |
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let |
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val ctxt = ProofContext.init thy; |
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val superclasses = map (Sign.read_class thy) raw_superclasses; |
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val name_atts = map ((apsnd o map) (Attrib.attribute thy) o fst) |
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raw_specs; |
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val axiomss = ProofContext.read_propp (ctxt, map (map (rpair []) o snd) |
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raw_specs) |
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|> snd |
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|> (map o map) fst; |
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in |
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AxClass.define_class (class, superclasses) [] |
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(name_atts ~~ axiomss) thy |
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end; |
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local |
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fun gen_instance mk_prop add_thm after_qed insts thy = |
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let |
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fun after_qed' results = |
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ProofContext.theory ((fold o fold) add_thm results #> after_qed); |
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in |
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thy |
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|> ProofContext.init |
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|> Proof.theorem_i NONE after_qed' ((map (fn t => [(t, [])]) |
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o mk_prop thy) insts) |
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end; |
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in |
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val instance_arity = |
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gen_instance (Logic.mk_arities oo Sign.cert_arity) AxClass.add_arity; |
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val instance_arity_cmd = |
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gen_instance (Logic.mk_arities oo Sign.read_arity) AxClass.add_arity I; |
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val classrel = |
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gen_instance (single oo (Logic.mk_classrel oo AxClass.cert_classrel)) AxClass.add_classrel I; |
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val classrel_cmd = |
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gen_instance (single oo (Logic.mk_classrel oo AxClass.read_classrel)) AxClass.add_classrel I; |
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end; (*local*) |
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(** class data **) |
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datatype class_data = ClassData of { |
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(* static part *) |
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consts: (string * string) list |
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(*locale parameter ~> constant name*), |
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base_sort: sort, |
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base_morph: morphism |
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(*static part of canonical morphism*), |
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assm_intro: thm option, |
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of_class: thm, |
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axiom: thm option, |
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(* dynamic part *) |
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defs: thm list, |
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operations: (string * (class * (typ * term))) list |
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}; |
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fun rep_class_data (ClassData data) = data; |
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fun mk_class_data ((consts, base_sort, base_morph, assm_intro, of_class, axiom), |
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(defs, operations)) = |
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ClassData { consts = consts, base_sort = base_sort, |
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base_morph = base_morph, assm_intro = assm_intro, of_class = of_class, axiom = axiom, |
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defs = defs, operations = operations }; |
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fun map_class_data f (ClassData { consts, base_sort, base_morph, assm_intro, |
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of_class, axiom, defs, operations }) = |
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mk_class_data (f ((consts, base_sort, base_morph, assm_intro, of_class, axiom), |
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(defs, operations))); |
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fun merge_class_data _ (ClassData { consts = consts, |
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base_sort = base_sort, base_morph = base_morph, assm_intro = assm_intro, |
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of_class = of_class, axiom = axiom, defs = defs1, operations = operations1 }, |
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ClassData { consts = _, base_sort = _, base_morph = _, assm_intro = _, |
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of_class = _, axiom = _, defs = defs2, operations = operations2 }) = |
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mk_class_data ((consts, base_sort, base_morph, assm_intro, of_class, axiom), |
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(Thm.merge_thms (defs1, defs2), |
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AList.merge (op =) (K true) (operations1, operations2))); |
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structure ClassData = TheoryDataFun |
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( |
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type T = class_data Graph.T |
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val empty = Graph.empty; |
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val copy = I; |
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val extend = I; |
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fun merge _ = Graph.join merge_class_data; |
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); |
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(* queries *) |
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val lookup_class_data = Option.map rep_class_data oo try o Graph.get_node o ClassData.get; |
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fun the_class_data thy class = case lookup_class_data thy class |
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of NONE => error ("Undeclared class " ^ quote class) |
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| SOME data => data; |
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val is_class = is_some oo lookup_class_data; |
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val ancestry = Graph.all_succs o ClassData.get; |
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val heritage = Graph.all_preds o ClassData.get; |
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fun these_params thy = |
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let |
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fun params class = |
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let |
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val const_typs = (#params o AxClass.get_info thy) class; |
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val const_names = (#consts o the_class_data thy) class; |
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in |
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(map o apsnd) |
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(fn c => (class, (c, (the o AList.lookup (op =) const_typs) c))) const_names |
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end; |
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in maps params o ancestry thy end; |
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val base_sort = #base_sort oo the_class_data; |
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fun rules thy class = |
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let val { axiom, of_class, ... } = the_class_data thy class |
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in (axiom, of_class) end; |
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fun all_assm_intros thy = |
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Graph.fold (fn (_, (data, _)) => fold (insert Thm.eq_thm) |
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((the_list o #assm_intro o rep_class_data) data)) (ClassData.get thy) []; |
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fun these_defs thy = maps (#defs o the_class_data thy) o ancestry thy; |
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fun these_operations thy = maps (#operations o the_class_data thy) o ancestry thy; |
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val base_morphism = #base_morph oo the_class_data; |
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fun morphism thy class = base_morphism thy class |
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$> Element.eq_morphism thy (these_defs thy [class]); |
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fun print_classes thy = |
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let |
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val ctxt = ProofContext.init thy; |
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val algebra = Sign.classes_of thy; |
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val arities = |
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Symtab.empty |
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|> Symtab.fold (fn (tyco, arities) => fold (fn (class, _) => |
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Symtab.map_default (class, []) (insert (op =) tyco)) arities) |
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((#arities o Sorts.rep_algebra) algebra); |
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val the_arities = these o Symtab.lookup arities; |
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fun mk_arity class tyco = |
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let |
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val Ss = Sorts.mg_domain algebra tyco [class]; |
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in Syntax.pretty_arity ctxt (tyco, Ss, [class]) end; |
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fun mk_param (c, ty) = Pretty.str (Sign.extern_const thy c ^ " :: " |
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^ setmp show_sorts false (Syntax.string_of_typ ctxt o Type.strip_sorts) ty); |
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fun mk_entry class = (Pretty.block o Pretty.fbreaks o map_filter I) [ |
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(SOME o Pretty.str) ("class " ^ Sign.extern_class thy class ^ ":"), |
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(SOME o Pretty.block) [Pretty.str "supersort: ", |
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(Syntax.pretty_sort ctxt o Sign.minimize_sort thy o Sign.super_classes thy) class], |
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((fn [] => NONE | ps => (SOME o Pretty.block o Pretty.fbreaks) |
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(Pretty.str "parameters:" :: ps)) o map mk_param |
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o these o Option.map #params o try (AxClass.get_info thy)) class, |
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(SOME o Pretty.block o Pretty.breaks) [ |
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Pretty.str "instances:", |
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Pretty.list "" "" (map (mk_arity class) (the_arities class)) |
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] |
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] |
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in |
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(Pretty.writeln o Pretty.chunks o separate (Pretty.str "") |
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o map mk_entry o Sorts.all_classes) algebra |
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end; |
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(* updaters *) |
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||
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fun register class sups params base_sort morph |
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axiom assm_intro of_class thy = |
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let |
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val operations = map (fn (v_ty as (_, ty), (c, _)) => |
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(c, (class, (ty, Free v_ty)))) params; |
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val add_class = Graph.new_node (class, |
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mk_class_data (((map o pairself) fst params, base_sort, |
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morph, assm_intro, of_class, axiom), ([], operations))) |
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#> fold (curry Graph.add_edge class) sups; |
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in ClassData.map add_class thy end; |
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fun activate_defs class thms thy = |
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let |
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val eq_morph = Element.eq_morphism thy thms; |
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fun amend cls thy = Locale.amend_registration eq_morph |
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(cls, morphism thy cls) thy; |
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in fold amend (heritage thy [class]) thy end; |
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fun register_operation class (c, (t, some_def)) thy = |
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(*FIXME 2009 does this still also work for abbrevs?*) |
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let |
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val base_sort = base_sort thy class; |
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val prep_typ = map_type_tfree |
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(fn (v, sort) => if Name.aT = v |
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then TFree (v, base_sort) else TVar ((v, 0), sort)); |
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val t' = map_types prep_typ t; |
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val ty' = Term.fastype_of t'; |
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in |
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thy |
|
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|> (ClassData.map o Graph.map_node class o map_class_data o apsnd) |
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(fn (defs, operations) => |
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(fold cons (the_list some_def) defs, |
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(c, (class, (ty', t'))) :: operations)) |
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|> is_some some_def ? activate_defs class (the_list some_def) |
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end; |
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fun register_subclass (sub, sup) some_dep_morph some_wit export thy = |
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let |
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val intros = (snd o rules thy) sup :: map_filter I |
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[Option.map (Drule.standard' o Element.conclude_witness) some_wit, |
|
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(fst o rules thy) sub]; |
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val tac = ALLGOALS (EVERY' (map Tactic.rtac intros)); |
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val classrel = Goal.prove_global thy [] [] (Logic.mk_classrel (sub, sup)) |
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(K tac); |
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val diff_sort = Sign.complete_sort thy [sup] |
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|> subtract (op =) (Sign.complete_sort thy [sub]); |
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in |
284 |
thy |
|
285 |
|> AxClass.add_classrel classrel |
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|> ClassData.map (Graph.add_edge (sub, sup)) |
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|> activate_defs sub (these_defs thy diff_sort) |
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|> fold2 (fn dep_morph => fn wit => Locale.add_dependency sub (sup, |
289 |
dep_morph $> Element.satisfy_morphism [wit] $> export)) |
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(the_list some_dep_morph) (the_list some_wit) |
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|> (fn thy => fold_rev Locale.activate_global_facts |
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(Locale.get_registrations thy) thy) |
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end; |
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||
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(** classes and class target **) |
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|
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(* class context syntax *) |
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|
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fun synchronize_class_syntax sups base_sort ctxt = |
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let |
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val thy = ProofContext.theory_of ctxt; |
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val algebra = Sign.classes_of thy; |
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val operations = these_operations thy sups; |
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fun subst_class_typ sort = map_type_tfree (K (TVar ((Name.aT, 0), sort))); |
306 |
val primary_constraints = |
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(map o apsnd) (subst_class_typ base_sort o fst o snd) operations; |
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val secondary_constraints = |
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(map o apsnd) (fn (class, (ty, _)) => subst_class_typ [class] ty) operations; |
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fun declare_const (c, _) = |
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let val b = Sign.base_name c |
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in Sign.intern_const thy b = c ? Variable.declare_const (b, c) end; |
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fun improve (c, ty) = (case AList.lookup (op =) primary_constraints c |
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of SOME ty' => (case try (Type.raw_match (ty', ty)) Vartab.empty |
315 |
of SOME tyenv => (case Vartab.lookup tyenv (Name.aT, 0) |
|
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of SOME (_, ty' as TVar (tvar as (vi, sort))) => |
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if TypeInfer.is_param vi |
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andalso Sorts.sort_le algebra (base_sort, sort) |
319 |
then SOME (ty', TFree (Name.aT, base_sort)) |
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320 |
else NONE |
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| _ => NONE) |
322 |
| NONE => NONE) |
|
323 |
| NONE => NONE) |
|
324 |
fun subst (c, ty) = Option.map snd (AList.lookup (op =) operations c); |
|
25368
f12613fda79d
proper implementation of check phase; non-qualified names for class operations
haftmann
parents:
25344
diff
changeset
|
325 |
val unchecks = map (fn (c, (_, (ty, t))) => (t, Const (c, ty))) operations; |
25083 | 326 |
in |
327 |
ctxt |
|
26518 | 328 |
|> fold declare_const primary_constraints |
329 |
|> Overloading.map_improvable_syntax (K (((primary_constraints, secondary_constraints), |
|
26730 | 330 |
(((improve, subst), true), unchecks)), false)) |
26518 | 331 |
|> Overloading.set_primary_constraints |
25083 | 332 |
end; |
333 |
||
334 |
fun refresh_syntax class ctxt = |
|
25002 | 335 |
let |
336 |
val thy = ProofContext.theory_of ctxt; |
|
29358 | 337 |
val base_sort = base_sort thy class; |
26238 | 338 |
in synchronize_class_syntax [class] base_sort ctxt end; |
25002 | 339 |
|
29358 | 340 |
fun begin sups base_sort ctxt = |
25083 | 341 |
ctxt |
342 |
|> Variable.declare_term |
|
343 |
(Logic.mk_type (TFree (Name.aT, base_sort))) |
|
26238 | 344 |
|> synchronize_class_syntax sups base_sort |
345 |
|> Overloading.add_improvable_syntax; |
|
24901
d3cbf79769b9
added first version of user-space type system for class target
haftmann
parents:
24847
diff
changeset
|
346 |
|
25311 | 347 |
fun init class thy = |
348 |
thy |
|
29509
1ff0f3f08a7b
migrated class package to new locale implementation
haftmann
parents:
29439
diff
changeset
|
349 |
|> Locale.init class |
29358 | 350 |
|> begin [class] (base_sort thy class); |
24914
95cda5dd58d5
added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset
|
351 |
|
24748 | 352 |
|
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
353 |
(* class target *) |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
354 |
|
29526 | 355 |
val class_prefix = Logic.const_of_class o Sign.base_name; |
356 |
||
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
357 |
fun declare class pos ((c, mx), dict) thy = |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
358 |
let |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
359 |
val prfx = class_prefix class; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
360 |
val thy' = thy |> Sign.add_path prfx; |
29526 | 361 |
(*FIXME 2009 use proper name morphism*) |
29439 | 362 |
val morph = morphism thy' class; |
28715
238f9966c80e
class morphism stemming from locale interpretation
haftmann
parents:
28674
diff
changeset
|
363 |
val params = map (apsnd fst o snd) (these_params thy' [class]); |
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
364 |
|
28965 | 365 |
val c' = Sign.full_bname thy' c; |
29439 | 366 |
val dict' = Morphism.term morph dict; |
367 |
val ty' = Term.fastype_of dict'; |
|
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
368 |
val ty'' = Type.strip_sorts ty'; |
29526 | 369 |
(*FIXME 2009 the tinkering with theorems here is a mess*) |
29439 | 370 |
val def_eq = Logic.mk_equals (Const (c', ty'), dict'); |
28674 | 371 |
fun get_axiom thy = ((Thm.varifyT o Thm.axiom thy) c', thy); |
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
372 |
in |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
373 |
thy' |
28965 | 374 |
|> Sign.declare_const pos ((Binding.name c, ty''), mx) |> snd |
29526 | 375 |
|> Thm.add_def false false (c, def_eq) (*FIXME 2009 name of theorem*) |
376 |
(*FIXME 2009 add_def should accept binding*) |
|
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
377 |
|>> Thm.symmetric |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
378 |
||>> get_axiom |
29509
1ff0f3f08a7b
migrated class package to new locale implementation
haftmann
parents:
29439
diff
changeset
|
379 |
|-> (fn (def, def') => register_operation class (c', (dict', SOME (Thm.symmetric def'))) |
29526 | 380 |
#> PureThy.store_thm (c ^ "_raw", def') (*FIXME 2009 name of theorem*) |
381 |
(*FIXME 2009 store_thm etc. should accept binding*) |
|
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
382 |
#> snd) |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
383 |
|> Sign.restore_naming thy |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
384 |
|> Sign.add_const_constraint (c', SOME ty') |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
385 |
end; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
386 |
|
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
387 |
fun abbrev class prmode pos ((c, mx), rhs) thy = |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
388 |
let |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
389 |
val prfx = class_prefix class; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
390 |
val thy' = thy |> Sign.add_path prfx; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
391 |
|
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
392 |
val unchecks = map (fn (c, (_, (ty, t))) => (t, Const (c, ty))) |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
393 |
(these_operations thy [class]); |
28965 | 394 |
val c' = Sign.full_bname thy' c; |
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
395 |
val rhs' = Pattern.rewrite_term thy unchecks [] rhs; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
396 |
val rhs'' = map_types Logic.varifyT rhs'; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
397 |
val ty' = Term.fastype_of rhs'; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
398 |
in |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
399 |
thy' |
28965 | 400 |
|> Sign.add_abbrev (#1 prmode) pos (Binding.name c, map_types Type.strip_sorts rhs'') |> snd |
27690
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
401 |
|> Sign.add_const_constraint (c', SOME ty') |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
402 |
|> Sign.notation true prmode [(Const (c', ty'), mx)] |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
403 |
|> not (#1 prmode = PrintMode.input) ? register_operation class (c', (rhs', NONE)) |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
404 |
|> Sign.restore_naming thy |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
405 |
end; |
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
406 |
|
24738db98d34
some steps towards explicit class target for canonical interpretation
haftmann
parents:
27684
diff
changeset
|
407 |
|
25462 | 408 |
(** instantiation target **) |
409 |
||
410 |
(* bookkeeping *) |
|
411 |
||
412 |
datatype instantiation = Instantiation of { |
|
25864 | 413 |
arities: string list * (string * sort) list * sort, |
25462 | 414 |
params: ((string * string) * (string * typ)) list |
25603 | 415 |
(*(instantiation parameter, type constructor), (local instantiation parameter, typ)*) |
25462 | 416 |
} |
417 |
||
418 |
structure Instantiation = ProofDataFun |
|
419 |
( |
|
420 |
type T = instantiation |
|
25536 | 421 |
fun init _ = Instantiation { arities = ([], [], []), params = [] }; |
25462 | 422 |
); |
423 |
||
25485 | 424 |
fun mk_instantiation (arities, params) = |
425 |
Instantiation { arities = arities, params = params }; |
|
25514 | 426 |
fun get_instantiation lthy = case Instantiation.get (LocalTheory.target_of lthy) |
25485 | 427 |
of Instantiation data => data; |
25514 | 428 |
fun map_instantiation f = (LocalTheory.target o Instantiation.map) |
429 |
(fn Instantiation { arities, params } => mk_instantiation (f (arities, params))); |
|
25462 | 430 |
|
25514 | 431 |
fun the_instantiation lthy = case get_instantiation lthy |
25536 | 432 |
of { arities = ([], [], []), ... } => error "No instantiation target" |
25485 | 433 |
| data => data; |
25462 | 434 |
|
25485 | 435 |
val instantiation_params = #params o get_instantiation; |
25462 | 436 |
|
25514 | 437 |
fun instantiation_param lthy v = instantiation_params lthy |
25462 | 438 |
|> find_first (fn (_, (v', _)) => v = v') |
439 |
|> Option.map (fst o fst); |
|
440 |
||
441 |
||
442 |
(* syntax *) |
|
443 |
||
26238 | 444 |
fun synchronize_inst_syntax ctxt = |
25462 | 445 |
let |
26259 | 446 |
val Instantiation { arities = (_, _, sort), params = params } = Instantiation.get ctxt; |
26238 | 447 |
val thy = ProofContext.theory_of ctxt; |
448 |
fun subst (c, ty) = case AxClass.inst_tyco_of thy (c, ty) |
|
449 |
of SOME tyco => (case AList.lookup (op =) params (c, tyco) |
|
450 |
of SOME (v_ty as (_, ty)) => SOME (ty, Free v_ty) |
|
451 |
| NONE => NONE) |
|
452 |
| NONE => NONE; |
|
453 |
val unchecks = |
|
454 |
map (fn ((c, _), v_ty as (_, ty)) => (Free v_ty, Const (c, ty))) params; |
|
455 |
in |
|
456 |
ctxt |
|
26259 | 457 |
|> Overloading.map_improvable_syntax |
26730 | 458 |
(fn (((primary_constraints, _), (((improve, _), _), _)), _) => |
459 |
(((primary_constraints, []), (((improve, subst), false), unchecks)), false)) |
|
26238 | 460 |
end; |
25462 | 461 |
|
462 |
||
463 |
(* target *) |
|
464 |
||
25485 | 465 |
val sanatize_name = (*FIXME*) |
466 |
let |
|
25574 | 467 |
fun is_valid s = Symbol.is_ascii_letter s orelse Symbol.is_ascii_digit s |
468 |
orelse s = "'" orelse s = "_"; |
|
25485 | 469 |
val is_junk = not o is_valid andf Symbol.is_regular; |
470 |
val junk = Scan.many is_junk; |
|
471 |
val scan_valids = Symbol.scanner "Malformed input" |
|
472 |
((junk |-- |
|
473 |
(Scan.optional (Scan.one Symbol.is_ascii_letter) "x" ^^ (Scan.many is_valid >> implode) |
|
474 |
--| junk)) |
|
25999 | 475 |
::: Scan.repeat ((Scan.many1 is_valid >> implode) --| junk)); |
25485 | 476 |
in |
477 |
explode #> scan_valids #> implode |
|
478 |
end; |
|
479 |
||
26259 | 480 |
fun type_name "*" = "prod" |
481 |
| type_name "+" = "sum" |
|
29526 | 482 |
| type_name s = sanatize_name (NameSpace.base s); |
26259 | 483 |
|
26518 | 484 |
fun resort_terms pp algebra consts constraints ts = |
485 |
let |
|
486 |
fun matchings (Const (c_ty as (c, _))) = (case constraints c |
|
487 |
of NONE => I |
|
488 |
| SOME sorts => fold2 (curry (Sorts.meet_sort algebra)) |
|
489 |
(Consts.typargs consts c_ty) sorts) |
|
490 |
| matchings _ = I |
|
491 |
val tvartab = (fold o fold_aterms) matchings ts Vartab.empty |
|
26642
454d11701fa4
Sorts.class_error: produce message only (formerly msg_class_error);
wenzelm
parents:
26628
diff
changeset
|
492 |
handle Sorts.CLASS_ERROR e => error (Sorts.class_error pp e); |
27089
480f19078b65
fixed wrong treatment of type variables in instantiation target
haftmann
parents:
26995
diff
changeset
|
493 |
val inst = map_type_tvar |
480f19078b65
fixed wrong treatment of type variables in instantiation target
haftmann
parents:
26995
diff
changeset
|
494 |
(fn (vi, sort) => TVar (vi, the_default sort (Vartab.lookup tvartab vi))); |
26518 | 495 |
in if Vartab.is_empty tvartab then NONE else SOME ((map o map_types) inst ts) end; |
496 |
||
25864 | 497 |
fun init_instantiation (tycos, vs, sort) thy = |
25462 | 498 |
let |
25536 | 499 |
val _ = if null tycos then error "At least one arity must be given" else (); |
26518 | 500 |
val params = these_params thy sort; |
501 |
fun get_param tyco (param, (_, (c, ty))) = if can (AxClass.param_of_inst thy) (c, tyco) |
|
25603 | 502 |
then NONE else SOME ((c, tyco), |
25864 | 503 |
(param ^ "_" ^ type_name tyco, map_atyps (K (Type (tyco, map TFree vs))) ty)); |
26518 | 504 |
val inst_params = map_product get_param tycos params |> map_filter I; |
505 |
val primary_constraints = map (apsnd |
|
506 |
(map_atyps (K (TVar ((Name.aT, 0), [])))) o snd o snd) params; |
|
26939
1035c89b4c02
moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents:
26761
diff
changeset
|
507 |
val pp = Syntax.pp_global thy; |
26518 | 508 |
val algebra = Sign.classes_of thy |
509 |
|> fold (fn tyco => Sorts.add_arities pp |
|
510 |
(tyco, map (fn class => (class, map snd vs)) sort)) tycos; |
|
511 |
val consts = Sign.consts_of thy; |
|
512 |
val improve_constraints = AList.lookup (op =) |
|
513 |
(map (fn (_, (class, (c, _))) => (c, [[class]])) params); |
|
514 |
fun resort_check ts ctxt = case resort_terms pp algebra consts improve_constraints ts |
|
515 |
of NONE => NONE |
|
516 |
| SOME ts' => SOME (ts', ctxt); |
|
517 |
fun improve (c, ty) = case AxClass.inst_tyco_of thy (c, ty) |
|
26329
3e58e4c67a2a
instantiation less liberal with dangling constraints
haftmann
parents:
26259
diff
changeset
|
518 |
of SOME tyco => (case AList.lookup (op =) inst_params (c, tyco) |
26518 | 519 |
of SOME (_, ty') => if Type.raw_instance (ty', ty) then SOME (ty, ty') else NONE |
26259 | 520 |
| NONE => NONE) |
521 |
| NONE => NONE; |
|
25485 | 522 |
in |
523 |
thy |
|
524 |
|> ProofContext.init |
|
26329
3e58e4c67a2a
instantiation less liberal with dangling constraints
haftmann
parents:
26259
diff
changeset
|
525 |
|> Instantiation.put (mk_instantiation ((tycos, vs, sort), inst_params)) |
27281 | 526 |
|> fold (Variable.declare_typ o TFree) vs |
26329
3e58e4c67a2a
instantiation less liberal with dangling constraints
haftmann
parents:
26259
diff
changeset
|
527 |
|> fold (Variable.declare_names o Free o snd) inst_params |
26259 | 528 |
|> (Overloading.map_improvable_syntax o apfst) |
26329
3e58e4c67a2a
instantiation less liberal with dangling constraints
haftmann
parents:
26259
diff
changeset
|
529 |
(fn ((_, _), ((_, subst), unchecks)) => |
26730 | 530 |
((primary_constraints, []), (((improve, K NONE), false), []))) |
26259 | 531 |
|> Overloading.add_improvable_syntax |
26518 | 532 |
|> Context.proof_map (Syntax.add_term_check 0 "resorting" resort_check) |
26238 | 533 |
|> synchronize_inst_syntax |
25485 | 534 |
end; |
535 |
||
26238 | 536 |
fun confirm_declaration c = (map_instantiation o apsnd) |
537 |
(filter_out (fn (_, (c', _)) => c' = c)) |
|
538 |
#> LocalTheory.target synchronize_inst_syntax |
|
539 |
||
25485 | 540 |
fun gen_instantiation_instance do_proof after_qed lthy = |
541 |
let |
|
25864 | 542 |
val (tycos, vs, sort) = (#arities o the_instantiation) lthy; |
543 |
val arities_proof = maps (fn tyco => Logic.mk_arities (tyco, map snd vs, sort)) tycos; |
|
25462 | 544 |
fun after_qed' results = |
545 |
LocalTheory.theory (fold (AxClass.add_arity o Thm.varifyT) results) |
|
546 |
#> after_qed; |
|
547 |
in |
|
548 |
lthy |
|
549 |
|> do_proof after_qed' arities_proof |
|
550 |
end; |
|
551 |
||
25485 | 552 |
val instantiation_instance = gen_instantiation_instance (fn after_qed => fn ts => |
25462 | 553 |
Proof.theorem_i NONE (after_qed o map the_single) (map (fn t => [(t, [])]) ts)); |
554 |
||
25485 | 555 |
fun prove_instantiation_instance tac = gen_instantiation_instance (fn after_qed => |
25502 | 556 |
fn ts => fn lthy => after_qed (map (fn t => Goal.prove lthy [] [] t |
557 |
(fn {context, ...} => tac context)) ts) lthy) I; |
|
25462 | 558 |
|
28666 | 559 |
fun prove_instantiation_exit tac = prove_instantiation_instance tac |
560 |
#> LocalTheory.exit_global; |
|
561 |
||
562 |
fun prove_instantiation_exit_result f tac x lthy = |
|
563 |
let |
|
29439 | 564 |
val morph = ProofContext.export_morphism lthy |
28666 | 565 |
(ProofContext.init (ProofContext.theory_of lthy)); |
29439 | 566 |
val y = f morph x; |
28666 | 567 |
in |
568 |
lthy |
|
569 |
|> prove_instantiation_exit (fn ctxt => tac ctxt y) |
|
570 |
|> pair y |
|
571 |
end; |
|
572 |
||
25462 | 573 |
fun conclude_instantiation lthy = |
574 |
let |
|
25485 | 575 |
val { arities, params } = the_instantiation lthy; |
25864 | 576 |
val (tycos, vs, sort) = arities; |
25462 | 577 |
val thy = ProofContext.theory_of lthy; |
25597
34860182b250
moved instance parameter management from class.ML to axclass.ML
haftmann
parents:
25574
diff
changeset
|
578 |
val _ = map (fn tyco => if Sign.of_sort thy |
25864 | 579 |
(Type (tyco, map TFree vs), sort) |
25462 | 580 |
then () else error ("Missing instance proof for type " ^ quote (Sign.extern_type thy tyco))) |
25597
34860182b250
moved instance parameter management from class.ML to axclass.ML
haftmann
parents:
25574
diff
changeset
|
581 |
tycos; |
34860182b250
moved instance parameter management from class.ML to axclass.ML
haftmann
parents:
25574
diff
changeset
|
582 |
in lthy end; |
25462 | 583 |
|
25603 | 584 |
fun pretty_instantiation lthy = |
585 |
let |
|
586 |
val { arities, params } = the_instantiation lthy; |
|
25864 | 587 |
val (tycos, vs, sort) = arities; |
25603 | 588 |
val thy = ProofContext.theory_of lthy; |
25864 | 589 |
fun pr_arity tyco = Syntax.pretty_arity lthy (tyco, map snd vs, sort); |
25603 | 590 |
fun pr_param ((c, _), (v, ty)) = |
25864 | 591 |
(Pretty.block o Pretty.breaks) [Pretty.str v, Pretty.str "==", |
26939
1035c89b4c02
moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents:
26761
diff
changeset
|
592 |
(Pretty.str o Sign.extern_const thy) c, Pretty.str "::", Syntax.pretty_typ_global thy ty]; |
25603 | 593 |
in |
594 |
(Pretty.block o Pretty.fbreaks) |
|
595 |
(Pretty.str "instantiation" :: map pr_arity tycos @ map pr_param params) |
|
596 |
end; |
|
597 |
||
29526 | 598 |
|
599 |
(** tactics and methods **) |
|
600 |
||
601 |
fun intro_classes_tac facts st = |
|
602 |
let |
|
603 |
val thy = Thm.theory_of_thm st; |
|
604 |
val classes = Sign.all_classes thy; |
|
605 |
val class_trivs = map (Thm.class_triv thy) classes; |
|
606 |
val class_intros = map_filter (try (#intro o AxClass.get_info thy)) classes; |
|
607 |
val assm_intros = all_assm_intros thy; |
|
608 |
in |
|
609 |
Method.intros_tac (class_trivs @ class_intros @ assm_intros) facts st |
|
610 |
end; |
|
611 |
||
612 |
fun default_intro_tac ctxt [] = |
|
613 |
intro_classes_tac [] ORELSE Old_Locale.intro_locales_tac true ctxt [] ORELSE |
|
614 |
Locale.intro_locales_tac true ctxt [] |
|
615 |
| default_intro_tac _ _ = no_tac; |
|
616 |
||
617 |
fun default_tac rules ctxt facts = |
|
618 |
HEADGOAL (Method.some_rule_tac rules ctxt facts) ORELSE |
|
619 |
default_intro_tac ctxt facts; |
|
620 |
||
621 |
val _ = Context.>> (Context.map_theory |
|
622 |
(Method.add_methods |
|
623 |
[("intro_classes", Method.no_args (Method.METHOD intro_classes_tac), |
|
624 |
"back-chain introduction rules of classes"), |
|
625 |
("default", Method.thms_ctxt_args (Method.METHOD oo default_tac), |
|
626 |
"apply some intro/elim rule")])); |
|
627 |
||
24218 | 628 |
end; |
25683 | 629 |