src/Pure/context.ML
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Wed, 22 Jun 2005 19:41:18 +0200
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begin_thy: merge maximal imports; incorporate proof data; added generic context;
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(*  Title:      Pure/context.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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Generic theory contexts with unique identity, arbitrarily typed data,
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development graph and history support.  Implicit theory contexts in ML.
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Generic proof contexts with arbitrarily typed data.
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*)
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signature BASIC_CONTEXT =
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sig
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  type theory
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  type theory_ref
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  exception THEORY of string * theory list
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  val context: theory -> unit
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  val the_context: unit -> theory
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end;
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signature CONTEXT =
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sig
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  include BASIC_CONTEXT
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  exception DATA_FAIL of exn * string
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  (*theory context*)
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  val theory_name: theory -> string
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  val parents_of: theory -> theory list
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  val ancestors_of: theory -> theory list
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  val is_stale: theory -> bool
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  val ProtoPureN: string
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  val PureN: string
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  val CPureN: string
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  val draftN: string
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  val exists_name: string -> theory -> bool
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  val names_of: theory -> string list
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  val pretty_thy: theory -> Pretty.T
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  val string_of_thy: theory -> string
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  val pprint_thy: theory -> pprint_args -> unit
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  val pretty_abbrev_thy: theory -> Pretty.T
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  val str_of_thy: theory -> string
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  val check_thy: string -> theory -> theory
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  val eq_thy: theory * theory -> bool
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  val subthy: theory * theory -> bool
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  val merge: theory * theory -> theory                     (*exception TERM*)
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  val merge_refs: theory_ref * theory_ref -> theory_ref    (*exception TERM*)
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  val self_ref: theory -> theory_ref
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  val deref: theory_ref -> theory
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  val copy_thy: theory -> theory
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  val checkpoint_thy: theory -> theory
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  val finish_thy: theory -> theory
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  val theory_data_of: theory -> string list
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  val pre_pure_thy: theory
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  val begin_thy: (theory -> Pretty.pp) -> string -> theory list -> theory
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  (*ML theory context*)
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  val get_context: unit -> theory option
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  val set_context: theory option -> unit
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  val reset_context: unit -> unit
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  val setmp: theory option -> ('a -> 'b) -> 'a -> 'b
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  val pass: theory option -> ('a -> 'b) -> 'a -> 'b * theory option
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  val pass_theory: theory -> ('a -> 'b) -> 'a -> 'b * theory
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  val save: ('a -> 'b) -> 'a -> 'b
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  val >> : (theory -> theory) -> unit
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  val ml_output: (string -> unit) * (string -> unit)
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  val use_mltext: string -> bool -> theory option -> unit
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  val use_mltext_theory: string -> bool -> theory -> theory
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  val use_let: string -> string -> string -> theory -> theory
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  val add_setup: (theory -> theory) list -> unit
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  val setup: unit -> (theory -> theory) list
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  (*proof context*)
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  type proof
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  val theory_of_proof: proof -> theory
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  val init_proof: theory -> proof
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  val proof_data_of: theory -> string list
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  (*generic context*)
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  datatype context = Theory of theory | Proof of proof
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  val theory_of: context -> theory
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  val proof_of: context -> proof
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end;
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signature PRIVATE_CONTEXT =
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sig
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  include CONTEXT
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  structure TheoryData:
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  sig
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    val declare: string -> Object.T -> (Object.T -> Object.T) -> (Object.T -> Object.T) ->
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      (Pretty.pp -> Object.T * Object.T -> Object.T) -> serial
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    val init: serial -> theory -> theory
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    val get: serial -> (Object.T -> 'a) -> theory -> 'a
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    val put: serial -> ('a -> Object.T) -> 'a -> theory -> theory
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  end
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  structure ProofData:
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  sig
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    val declare: string -> (theory -> Object.T) -> serial
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    val init: serial -> theory -> theory
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    val get: serial -> (Object.T -> 'a) -> proof -> 'a
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    val put: serial -> ('a -> Object.T) -> 'a -> proof -> proof
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  end
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end;
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structure Context: PRIVATE_CONTEXT =
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struct
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(*** theory context ***)
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(** theory data **)
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(* data kinds and access methods *)
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exception DATA_FAIL of exn * string;
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local
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type kind =
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 {name: string,
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  empty: Object.T,
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  copy: Object.T -> Object.T,
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  extend: Object.T -> Object.T,
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  merge: Pretty.pp -> Object.T * Object.T -> Object.T};
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val kinds = ref (Inttab.empty: kind Inttab.table);
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fun invoke meth_name meth_fn k =
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  (case Inttab.lookup (! kinds, k) of
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    SOME kind => meth_fn kind |> transform_failure (fn exn =>
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      DATA_FAIL (exn, "Theory data method " ^ #name kind ^ "." ^ meth_name ^ " failed"))
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  | NONE => sys_error ("Invalid theory data identifier " ^ string_of_int k));
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in
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fun invoke_name k    = invoke "name" (K o #name) k ();
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fun invoke_empty k   = invoke "empty" (K o #empty) k ();
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val invoke_copy      = invoke "copy" #copy;
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val invoke_extend    = invoke "extend" #extend;
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fun invoke_merge pp  = invoke "merge" (fn kind => #merge kind pp);
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fun declare_theory_data name empty copy extend merge =
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  let
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    val k = serial ();
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    val kind = {name = name, empty = empty, copy = copy, extend = extend, merge = merge};
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    val _ = conditional (Inttab.exists (equal name o #name o #2) (! kinds)) (fn () =>
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      warning ("Duplicate declaration of theory data " ^ quote name));
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    val _ = kinds := Inttab.update ((k, kind), ! kinds);
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  in k end;
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val copy_data = Inttab.map' invoke_copy;
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val extend_data = Inttab.map' invoke_extend;
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fun merge_data pp = Inttab.join (SOME oo invoke_merge pp) o pairself extend_data;
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end;
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(** datatype theory **)
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datatype theory =
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  Theory of
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   (*identity*)
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   {self: theory ref option,            (*dynamic self reference -- follows theory changes*)
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    id: serial * string,                (*identifier of this theory*)
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    ids: string Inttab.table,           (*identifiers of ancestors*)
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    iids: string Inttab.table} *        (*identifiers of intermediate checkpoints*)
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   (*data*)
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   {theory: Object.T Inttab.table,      (*theory data record*)
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    proof: unit Inttab.table} *         (*proof data kinds*)
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   (*ancestry*)
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   {parents: theory list,               (*immediate predecessors*)
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    ancestors: theory list} *           (*all predecessors*)
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   (*history*)
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   {name: string,                       (*prospective name of finished theory*)
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    version: int,                       (*checkpoint counter*)
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    intermediates: theory list};        (*intermediate checkpoints*)
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exception THEORY of string * theory list;
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fun rep_theory (Theory args) = args;
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val identity_of = #1 o rep_theory;
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val data_of     = #2 o rep_theory;
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val ancestry_of = #3 o rep_theory;
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val history_of  = #4 o rep_theory;
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fun make_identity self id ids iids = {self = self, id = id, ids = ids, iids = iids};
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fun make_data theory proof = {theory = theory, proof = proof};
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fun make_ancestry parents ancestors = {parents = parents, ancestors = ancestors};
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fun make_history name vers ints = {name = name, version = vers, intermediates = ints};
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fun map_theory f {theory, proof} = make_data (f theory) proof;
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fun map_proof f {theory, proof} = make_data theory (f proof);
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val the_self = the o #self o identity_of;
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val parents_of = #parents o ancestry_of;
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val ancestors_of = #ancestors o ancestry_of;
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val theory_name = #name o history_of;
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(* staleness *)
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fun eq_id ((i: int, _), (j, _)) = (i = j);
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fun is_stale
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    (Theory ({self = SOME (ref (Theory ({id = id', ...}, _, _, _))), id, ...}, _, _, _)) =
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      not (eq_id (id, id'))
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  | is_stale (Theory ({self = NONE, ...}, _, _, _)) = true;
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fun vitalize (thy as Theory ({self = SOME r, ...}, _, _, _)) = (r := thy; thy)
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  | vitalize (thy as Theory ({self = NONE, id, ids, iids}, data, ancestry, history)) =
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      let
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        val r = ref thy;
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        val thy' = Theory (make_identity (SOME r) id ids iids, data, ancestry, history);
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      in r := thy'; thy' end;
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(* names *)
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val ProtoPureN = "ProtoPure";
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val PureN = "Pure";
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val CPureN = "CPure";
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val draftN = "#";
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fun draft_id (_, name) = (name = draftN);
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val is_draft = draft_id o #id o identity_of;
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fun exists_name name (Theory ({id, ids, iids, ...}, _, _, _)) =
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  name = #2 id orelse
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  Inttab.exists (equal name o #2) ids orelse
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  Inttab.exists (equal name o #2) iids;
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fun names_of (Theory ({id, ids, iids, ...}, _, _, _)) =
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  rev (#2 id :: Inttab.fold (cons o #2) iids (Inttab.fold (cons o #2) ids []));
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fun pretty_thy thy =
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  Pretty.str_list "{" "}" (names_of thy @ (if is_stale thy then ["!"] else []));
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val string_of_thy = Pretty.string_of o pretty_thy;
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val pprint_thy = Pretty.pprint o pretty_thy;
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fun pretty_abbrev_thy thy =
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  let
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    val names = names_of thy;
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    val n = length names;
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    val abbrev = if n > 5 then "..." :: List.drop (names, n - 5) else names;
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  in Pretty.str_list "{" "}" abbrev end;
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val str_of_thy = Pretty.str_of o pretty_abbrev_thy;
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(* consistency *)    (*exception TERM*)
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fun check_thy pos thy =
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  if is_stale thy then
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    raise TERM ("Stale theory encountered (in " ^ pos ^ "):\n" ^ string_of_thy thy, [])
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  else thy;
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fun check_ins id ids =
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  if draft_id id orelse is_some (Inttab.lookup (ids, #1 id)) then ids
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  else if Inttab.exists (equal (#2 id) o #2) ids then
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    raise TERM ("Different versions of theory component " ^ quote (#2 id), [])
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  else Inttab.update (id, ids);
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fun check_insert intermediate id (ids, iids) =
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  let val ids' = check_ins id ids and iids' = check_ins id iids
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  in if intermediate then (ids, iids') else (ids', iids) end;
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fun check_merge
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    (Theory ({id = id1, ids = ids1, iids = iids1, ...}, _, _, history1))
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    (Theory ({id = id2, ids = ids2, iids = iids2, ...}, _, _, history2)) =
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  (Inttab.fold check_ins ids2 ids1, Inttab.fold check_ins iids2 iids1)
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  |> check_insert (#version history1 > 0) id1
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  |> check_insert (#version history2 > 0) id2;
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(* equality and inclusion *)
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val eq_thy = eq_id o pairself (#id o identity_of o check_thy "Context.eq_thy");
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fun proper_subthy
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  (thy1 as Theory ({id = (i, _), ...}, _, _, _),
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    thy2 as Theory ({ids, iids, ...}, _, _, _)) =
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  (pairself (check_thy "Context.proper_subthy") (thy1, thy2);
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    is_some (Inttab.lookup (ids, i)) orelse is_some (Inttab.lookup (iids, i)));
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fun subthy thys = eq_thy thys orelse proper_subthy thys;
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(* theory references *)
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(*theory_ref provides a safe way to store dynamic references to a
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  theory in external data structures -- a plain theory value would
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  become stale as the self reference moves on*)
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datatype theory_ref = TheoryRef of theory ref;
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val self_ref = TheoryRef o the_self o check_thy "Context.self_ref";
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fun deref (TheoryRef (ref thy)) = thy;
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(* trivial merge *)    (*exception TERM*)
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fun merge (thy1, thy2) =
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  if subthy (thy2, thy1) then thy1
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  else if subthy (thy1, thy2) then thy2
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  else (check_merge thy1 thy2;
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    raise TERM (cat_lines ["Attempt to perform non-trivial merge of theories:",
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      str_of_thy thy1, str_of_thy thy2], []));
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fun merge_refs (ref1, ref2) = self_ref (merge (deref ref1, deref ref2));
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(** build theories **)
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(* primitives *)
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fun create_thy name self id ids iids data ancestry history =
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  let
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    val intermediate = #version history > 0;
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    val (ids', iids') = check_insert intermediate id (ids, iids);
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    val id' = (serial (), name);
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    val _ = check_insert intermediate id' (ids', iids');
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    val identity' = make_identity self id' ids' iids';
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  in vitalize (Theory (identity', data, ancestry, history)) end;
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fun change_thy name f (thy as Theory ({self, id, ids, iids}, data, ancestry, history)) =
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  let
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    val _ = check_thy "Context.change_thy" thy;
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    val (self', data', ancestry') =
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      if is_draft thy then (self, data, ancestry)    (*destructive change!*)
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      else if #version history > 0
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      then (NONE, map_theory copy_data data, ancestry)
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      else (NONE, map_theory extend_data data, make_ancestry [thy] (thy :: #ancestors ancestry));
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    val data'' = f data';
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  in create_thy name self' id ids iids data'' ancestry' history end;
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fun name_thy name = change_thy name I;
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val modify_thy = change_thy draftN;
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val extend_thy = modify_thy I;
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fun copy_thy (thy as Theory ({id, ids, iids, ...}, data, ancestry, history)) =
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  (check_thy "Context.copy_thy" thy;
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    create_thy draftN NONE id ids iids (map_theory copy_data data) ancestry history);
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val pre_pure_thy = create_thy draftN NONE (serial (), draftN) Inttab.empty Inttab.empty
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  (make_data Inttab.empty Inttab.empty) (make_ancestry [] []) (make_history ProtoPureN 0 []);
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(* named theory nodes *)
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fun merge_thys pp (thy1, thy2) =
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  if exists_name CPureN thy1 <> exists_name CPureN thy2 then
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    error "Cannot merge Pure and CPure developments"
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  else
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    let
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      val (ids, iids) = check_merge thy1 thy2;
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      val data1 = data_of thy1 and data2 = data_of thy2;
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      val data = make_data
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        (merge_data (pp thy1) (#theory data1, #theory data2))
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        (Inttab.merge (K true) (#proof data1, #proof data2));
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      val ancestry = make_ancestry [] [];
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      val history = make_history "" 0 [];
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    in create_thy draftN NONE (serial (), draftN) ids iids data ancestry history end;
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fun maximal_thys thys =
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  thys |> filter (fn thy => not (exists (fn thy' => proper_subthy (thy, thy')) thys));
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fun begin_thy pp name imports =
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  if name = draftN then error ("Illegal theory name: " ^ quote draftN)
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  else
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    let
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      val parents =
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        maximal_thys (gen_distinct eq_thy (map (check_thy "Context.begin_thy") imports));
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      val ancestors = gen_distinct eq_thy (parents @ List.concat (map ancestors_of parents));
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      val Theory ({id, ids, iids, ...}, data, _, _) =
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        (case parents of
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          [] => error "No parent theories"
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        | [thy] => extend_thy thy
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        | thy :: thys => Library.foldl (merge_thys pp) (thy, thys));
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      val ancestry = make_ancestry parents ancestors;
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      val history = make_history name 0 [];
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    in create_thy draftN NONE id ids iids data ancestry history end;
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(* undoable checkpoints *)
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fun checkpoint_thy thy =
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  if not (is_draft thy) then thy
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  else
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    let
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      val {name, version, intermediates} = history_of thy;
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      val thy' as Theory (identity', data', ancestry', _) =
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        name_thy (name ^ ":" ^ string_of_int version) thy;
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      val history' = make_history name (version + 1) (thy' :: intermediates);
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    in vitalize (Theory (identity', data', ancestry', history')) end;
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fun finish_thy thy =
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  let
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    val {name, version, intermediates} = history_of thy;
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    val rs = map (the_self o check_thy "Context.finish_thy") intermediates;
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    val thy' as Theory ({self, id, ids, ...}, data', ancestry', _) = name_thy name thy;
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    val identity' = make_identity self id ids Inttab.empty;
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   398
    val history' = make_history name 0 [];
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   399
    val thy'' = vitalize (Theory (identity', data', ancestry', history'));
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    val _ = List.app (fn r => r := thy'') rs;
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  in thy'' end;
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   402
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   403
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   404
(* theory data *)
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fun dest_data name_of tab =
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  map name_of (Inttab.keys tab)
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  |> map (rpair ()) |> Symtab.make_multi |> Symtab.dest
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  |> map (apsnd length)
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  |> map (fn (name, 1) => name | (name, n) => name ^ enclose "[" "]" (string_of_int n));
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   411
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val theory_data_of = dest_data invoke_name o #theory o data_of;
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structure TheoryData =
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struct
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   416
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val declare = declare_theory_data;
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   419
fun get k dest thy =
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  (case Inttab.lookup (#theory (data_of thy), k) of
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    SOME x => (dest x handle Match =>
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   422
      error ("Failed to access theory data " ^ quote (invoke_name k)))
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   423
  | NONE => error ("Uninitialized theory data " ^ quote (invoke_name k)));
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   424
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fun put k mk x = modify_thy (map_theory (curry Inttab.update (k, mk x)));
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fun init k = put k I (invoke_empty k);
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   427
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end;
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   429
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   430
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   431
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(*** ML theory context ***)
6185
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local
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08c8dad8e399 Deleted Library.option type.
skalberg
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   435
  val current_theory = ref (NONE: theory option);
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
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parents:
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   436
in
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   437
  fun get_context () = ! current_theory;
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   438
  fun set_context opt_thy = current_theory := opt_thy;
6238
bd7b4a23118f setmp: theory option;
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   439
  fun setmp opt_thy f x = Library.setmp current_theory opt_thy f x;
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
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end;
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parents:
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   441
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
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   442
fun the_context () =
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parents:
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   443
  (case get_context () of
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skalberg
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   444
    SOME thy => thy
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
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parents:
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  | _ => error "Unknown theory context");
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parents:
diff changeset
   446
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fun context thy = set_context (SOME thy);
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   448
fun reset_context () = set_context NONE;
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6310
wenzelm
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   450
fun pass opt_thy f x =
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   451
  setmp opt_thy (fn x => let val y = f x in (y, get_context ()) end) x;
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   452
6310
wenzelm
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   453
fun pass_theory thy f x =
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skalberg
parents: 14981
diff changeset
   454
  (case pass (SOME thy) f x of
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diff changeset
   455
    (y, SOME thy') => (y, thy')
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skalberg
parents: 14981
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   456
  | (_, NONE) => error "Lost theory context in ML");
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6dc692fb3d28 added fetch, fetch_theory;
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parents: 6238
diff changeset
   457
6238
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diff changeset
   458
fun save f x = setmp (get_context ()) f x;
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parents: 6185
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   459
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
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parents:
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   460
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
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   461
(* map context *)
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   462
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   463
nonfix >>;
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 14981
diff changeset
   464
fun >> f = set_context (SOME (f (the_context ())));
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   465
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   466
8348
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   467
(* use ML text *)
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   468
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   469
val ml_output = (writeln, error_msg);
14976
65f572245276 use_output: Symbol.escape;
wenzelm
parents: 11819
diff changeset
   470
65f572245276 use_output: Symbol.escape;
wenzelm
parents: 11819
diff changeset
   471
fun use_output verb txt = use_text ml_output verb (Symbol.escape txt);
10914
aded4ba99b88 use_text etc.: proper output of error messages;
wenzelm
parents: 10893
diff changeset
   472
10924
92305ae9f460 use_output: proper handling of non-ASCII symbols;
wenzelm
parents: 10914
diff changeset
   473
fun use_mltext txt verb opt_thy = setmp opt_thy (fn () => use_output verb txt) ();
92305ae9f460 use_output: proper handling of non-ASCII symbols;
wenzelm
parents: 10914
diff changeset
   474
fun use_mltext_theory txt verb thy = #2 (pass_theory thy (use_output verb) txt);
8348
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   475
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   476
fun use_context txt = use_mltext_theory ("Context.>> (" ^ txt ^ ");") false;
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   477
9586
f6669dead969 use_let: exclude 'val';
wenzelm
parents: 8801
diff changeset
   478
fun use_let bind body txt =
f6669dead969 use_let: exclude 'val';
wenzelm
parents: 8801
diff changeset
   479
  use_context ("let " ^ bind ^ " = " ^ txt ^ " in\n" ^ body ^ " end");
8348
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   480
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   481
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   482
(* delayed theory setup *)
15801
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   483
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   484
local
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   485
  val setup_fns = ref ([]: (theory -> theory) list);
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   486
in
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   487
  fun add_setup fns = setup_fns := ! setup_fns @ fns;
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   488
  fun setup () = let val fns = ! setup_fns in setup_fns := []; fns end;
d2f5ca3c048d superceded by Pure.thy and CPure.thy;
wenzelm
parents: 15531
diff changeset
   489
end;
8348
ebbbfdb35c84 added use_mltext, use_mltext_theory, use_let, use_setup (from isar_thy.ML);
wenzelm
parents: 6310
diff changeset
   490
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   491
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   492
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   493
(*** proof context ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   494
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   495
(* datatype proof *)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   496
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   497
datatype proof = Proof of theory * Object.T Inttab.table;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   498
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   499
fun theory_of_proof (Proof (thy, _)) = thy;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   500
fun data_of_proof (Proof (_, data)) = data;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   501
fun map_prf f (Proof (thy, data)) = Proof (thy, f data);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   502
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   503
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   504
(* proof data kinds *)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   505
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   506
local
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   507
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   508
type kind =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   509
 {name: string,
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   510
  init: theory -> Object.T};
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   511
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   512
val kinds = ref (Inttab.empty: kind Inttab.table);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   513
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   514
fun invoke meth_name meth_fn k =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   515
  (case Inttab.lookup (! kinds, k) of
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   516
    SOME kind => meth_fn kind |> transform_failure (fn exn =>
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   517
      DATA_FAIL (exn, "Proof data method " ^ #name kind ^ "." ^ meth_name ^ " failed"))
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   518
  | NONE => sys_error ("Invalid proof data identifier " ^ string_of_int k));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   519
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   520
fun invoke_name k = invoke "name" (K o #name) k ();
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   521
val invoke_init   = invoke "init" #init;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   522
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   523
in
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   524
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   525
val proof_data_of = dest_data invoke_name o #proof o data_of;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   526
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   527
fun init_proof thy =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   528
  Proof (thy, Inttab.map' (fn k => fn _ => invoke_init k thy) (#proof (data_of thy)));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   529
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   530
structure ProofData =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   531
struct
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   532
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   533
fun declare name init =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   534
  let
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   535
    val k = serial ();
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   536
    val kind = {name = name, init = init};
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   537
    val _ = conditional (Inttab.exists (equal name o #name o #2) (! kinds)) (fn () =>
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   538
      warning ("Duplicate declaration of proof data " ^ quote name));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   539
    val _ = kinds := Inttab.update ((k, kind), ! kinds);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   540
  in k end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   541
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   542
fun init k = modify_thy (map_proof (curry Inttab.update (k, ())));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   543
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   544
fun get k dest prf =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   545
  (case Inttab.lookup (data_of_proof prf, k) of
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   546
    SOME x => (dest x handle Match =>
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   547
      error ("Failed to access proof data " ^ quote (invoke_name k)))
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   548
  | NONE => error ("Uninitialized proof data " ^ quote (invoke_name k)));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   549
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   550
fun put k mk x = map_prf (curry Inttab.update (k, mk x));
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   551
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   552
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   553
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   554
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   555
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   556
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   557
(*** generic context ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   558
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   559
datatype context = Theory of theory | Proof of proof;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   560
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   561
fun theory_of (Theory thy) = thy
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   562
  | theory_of (Proof prf) = theory_of_proof prf;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   563
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   564
fun proof_of (Theory thy) = init_proof thy
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   565
  | proof_of (Proof prf) = prf;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   566
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   567
end;
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   568
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   569
structure BasicContext: BASIC_CONTEXT = Context;
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   570
open BasicContext;
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   571
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   572
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   573
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   574
(*** type-safe interfaces for data declarations ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   575
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   576
(** theory data **)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   577
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   578
signature THEORY_DATA_ARGS =
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   579
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   580
  val name: string
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   581
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   582
  val empty: T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   583
  val copy: T -> T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   584
  val extend: T -> T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   585
  val merge: Pretty.pp -> T * T -> T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   586
  val print: theory -> T -> unit
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   587
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   588
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   589
signature THEORY_DATA =
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   590
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   591
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   592
  val init: theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   593
  val print: theory -> unit
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   594
  val get: theory -> T
16489
f66ab8a4e98f improved treatment of intermediate checkpoints: actual copy
wenzelm
parents: 16436
diff changeset
   595
  val get_sg: theory -> T    (*obsolete*)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   596
  val put: T -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   597
  val map: (T -> T) -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   598
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   599
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   600
functor TheoryDataFun(Data: THEORY_DATA_ARGS): THEORY_DATA =
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   601
struct
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   602
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   603
structure TheoryData = Context.TheoryData;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   604
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   605
type T = Data.T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   606
exception Data of T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   607
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   608
val kind = TheoryData.declare Data.name
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   609
  (Data Data.empty)
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   610
  (fn Data x => Data (Data.copy x))
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   611
  (fn Data x => Data (Data.extend x))
16489
f66ab8a4e98f improved treatment of intermediate checkpoints: actual copy
wenzelm
parents: 16436
diff changeset
   612
  (fn pp => fn (Data x1, Data x2) => Data (Data.merge pp (x1, x2)));
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   613
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   614
val init = TheoryData.init kind;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   615
val get = TheoryData.get kind (fn Data x => x);
16489
f66ab8a4e98f improved treatment of intermediate checkpoints: actual copy
wenzelm
parents: 16436
diff changeset
   616
val get_sg = get;
f66ab8a4e98f improved treatment of intermediate checkpoints: actual copy
wenzelm
parents: 16436
diff changeset
   617
fun print thy = Data.print thy (get thy);
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   618
val put = TheoryData.put kind Data;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   619
fun map f thy = put (f (get thy)) thy;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   620
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   621
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   622
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   623
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   624
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   625
(** proof data **)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   626
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   627
signature PROOF_DATA_ARGS =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   628
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   629
  val name: string
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   630
  type T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   631
  val init: theory -> T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   632
  val print: Context.proof -> T -> unit
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   633
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   634
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   635
signature PROOF_DATA =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   636
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   637
  type T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   638
  val init: theory -> theory
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   639
  val print: Context.proof -> unit
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   640
  val get: Context.proof -> T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   641
  val put: T -> Context.proof -> Context.proof
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   642
  val map: (T -> T) -> Context.proof -> Context.proof
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   643
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   644
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   645
functor ProofDataFun(Data: PROOF_DATA_ARGS): PROOF_DATA =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   646
struct
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   647
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   648
structure ProofData = Context.ProofData;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   649
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   650
type T = Data.T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   651
exception Data of T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   652
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   653
val kind = ProofData.declare Data.name (Data o Data.init);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   654
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   655
val init = ProofData.init kind;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   656
val get = ProofData.get kind (fn Data x => x);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   657
fun print prf = Data.print prf (get prf);
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   658
val put = ProofData.put kind Data;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   659
fun map f prf = put (f (get prf)) prf;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   660
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   661
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   662
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   663
(*hide private interface*)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   664
structure Context: CONTEXT = Context;