src/Pure/context.ML
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Fri, 28 Aug 2015 23:21:04 +0200
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more abstract theory certificate, which is not necessarily the full theory;
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(*  Title:      Pure/context.ML
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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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monotonic development graph and history support.  Generic proof
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contexts with arbitrarily typed data.
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Firm naming conventions:
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   thy, thy', thy1, thy2: theory
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   ctxt, ctxt', ctxt1, ctxt2: Proof.context
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   context: Context.generic
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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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  exception THEORY of string * theory list
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  structure Proof: sig type context end
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  structure Proof_Context:
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  sig
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    val theory_of: Proof.context -> theory
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    val init_global: theory -> Proof.context
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    val get_global: theory -> string -> Proof.context
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  end
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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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  (*theory context*)
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  type theory_id
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  val theory_id: theory -> theory_id
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  val timing: bool Unsynchronized.ref
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  type pretty
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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 theory_id_name: theory_id -> string
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  val theory_name: theory -> string
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  val PureN: string
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  val display_name: theory_id -> string
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  val display_names: 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 pretty_abbrev_thy: theory -> Pretty.T
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  val str_of_thy: theory -> string
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  val get_theory: theory -> string -> theory
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  val this_theory: theory -> string -> theory
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  val eq_thy_id: theory_id * theory_id -> bool
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  val eq_thy: theory * theory -> bool
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  val proper_subthy_id: theory_id * theory_id -> bool
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  val proper_subthy: theory * theory -> bool
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  val subthy_id: theory_id * theory_id -> bool
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  val subthy: theory * theory -> bool
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  val finish_thy: theory -> theory
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  val begin_thy: (theory -> pretty) -> string -> theory list -> theory
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  (*proof context*)
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  val raw_transfer: theory -> Proof.context -> Proof.context
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  (*certificate*)
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  datatype certificate = Certificate of theory | Certificate_Id of theory_id
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  val certificate_theory: certificate -> theory
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  val certificate_theory_id: certificate -> theory_id
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  val eq_certificate: certificate * certificate -> bool
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  val join_certificate: certificate * certificate -> certificate
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  (*generic context*)
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  datatype generic = Theory of theory | Proof of Proof.context
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  val cases: (theory -> 'a) -> (Proof.context -> 'a) -> generic -> 'a
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  val mapping: (theory -> theory) -> (Proof.context -> Proof.context) -> generic -> generic
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  val mapping_result: (theory -> 'a * theory) -> (Proof.context -> 'a * Proof.context) ->
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    generic -> 'a * generic
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  val the_theory: generic -> theory
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  val the_proof: generic -> Proof.context
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  val map_theory: (theory -> theory) -> generic -> generic
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  val map_proof: (Proof.context -> Proof.context) -> generic -> generic
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  val map_theory_result: (theory -> 'a * theory) -> generic -> 'a * generic
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  val map_proof_result: (Proof.context -> 'a * Proof.context) -> generic -> 'a * generic
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  val theory_map: (generic -> generic) -> theory -> theory
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  val proof_map: (generic -> generic) -> Proof.context -> Proof.context
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  val theory_of: generic -> theory  (*total*)
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  val proof_of: generic -> Proof.context  (*total*)
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  (*pretty printing context*)
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  val pretty: Proof.context -> pretty
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  val pretty_global: theory -> pretty
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  val pretty_generic: generic -> pretty
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  val pretty_context: (theory -> Proof.context) -> pretty -> Proof.context
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  (*thread data*)
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  val thread_data: unit -> generic option
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  val the_thread_data: unit -> generic
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  val set_thread_data: generic option -> unit
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  val setmp_thread_data: generic option -> ('a -> 'b) -> 'a -> 'b
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  val >> : (generic -> generic) -> unit
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  val >>> : (generic -> 'a * generic) -> 'a
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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 Theory_Data:
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  sig
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    val declare: Position.T -> Any.T -> (Any.T -> Any.T) ->
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      (pretty -> Any.T * Any.T -> Any.T) -> serial
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    val get: serial -> (Any.T -> 'a) -> theory -> 'a
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    val put: serial -> ('a -> Any.T) -> 'a -> theory -> theory
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  end
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  structure Proof_Data:
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  sig
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    val declare: (theory -> Any.T) -> serial
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    val get: serial -> (Any.T -> 'a) -> Proof.context -> 'a
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    val put: serial -> ('a -> Any.T) -> 'a -> Proof.context -> Proof.context
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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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val timing = Unsynchronized.ref false;
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(*private copy avoids potential conflict of table exceptions*)
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structure Datatab = Table(type key = int val ord = int_ord);
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datatype pretty = Pretty of Any.T;
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local
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type kind =
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 {pos: Position.T,
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  empty: Any.T,
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  extend: Any.T -> Any.T,
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  merge: pretty -> Any.T * Any.T -> Any.T};
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val kinds = Synchronized.var "Theory_Data" (Datatab.empty: kind Datatab.table);
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fun invoke name f k x =
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  (case Datatab.lookup (Synchronized.value kinds) k of
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    SOME kind =>
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      if ! timing andalso name <> "" then
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        Timing.cond_timeit true ("Theory_Data." ^ name ^ Position.here (#pos kind))
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          (fn () => f kind x)
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      else f kind x
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  | NONE => raise Fail "Invalid theory data identifier");
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in
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fun invoke_empty k = invoke "" (K o #empty) k ();
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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 pos empty extend merge =
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  let
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    val k = serial ();
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    val kind = {pos = pos, empty = empty, extend = extend, merge = merge};
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    val _ = Synchronized.change kinds (Datatab.update (k, kind));
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  in k end;
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val extend_data = Datatab.map invoke_extend;
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fun merge_data pp = Datatab.join (invoke_merge pp) o apply2 extend_data;
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end;
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(** datatype theory **)
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datatype theory_id =
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  Theory_Id of
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   (*identity*)
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   {id: serial,                   (*identifier*)
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    ids: Inttab.set} *            (*cumulative identifiers -- symbolic body content*)
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   (*history*)
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   {name: string,                 (*official theory name*)
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    stage: int};                  (*counter for anonymous updates*)
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datatype theory =
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  Theory of
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   theory_id *
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   (*ancestry*)
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   {parents: theory list,         (*immediate predecessors*)
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    ancestors: theory list} *     (*all predecessors -- canonical reverse order*)
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   (*data*)
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   Any.T Datatab.table;           (*body content*)
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exception THEORY of string * theory list;
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fun rep_theory_id (Theory_Id args) = args;
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fun rep_theory (Theory args) = args;
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val theory_id = #1 o rep_theory;
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val identity_of_id = #1 o rep_theory_id;
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val identity_of = identity_of_id o theory_id;
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val history_of_id = #2 o rep_theory_id;
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val history_of = history_of_id o theory_id;
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val ancestry_of = #2 o rep_theory;
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val data_of = #3 o rep_theory;
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fun make_identity id ids = {id = id, ids = ids};
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fun make_history name stage = {name = name, stage = stage};
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fun make_ancestry parents ancestors = {parents = parents, ancestors = ancestors};
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val theory_id_name = #name o history_of_id;
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val theory_name = #name o history_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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(* names *)
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val PureN = "Pure";
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val finished = ~1;
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fun display_name thy_id =
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  let val {name, stage} = history_of_id thy_id
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  in if stage = finished then name else name ^ ":" ^ string_of_int stage end;
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fun display_names thy =
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  let
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    val name = display_name (theory_id thy);
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    val ancestor_names = map theory_name (ancestors_of thy);
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  in rev (name :: ancestor_names) end;
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val pretty_thy = Pretty.str_list "{" "}" o display_names;
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val string_of_thy = Pretty.string_of o pretty_thy;
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fun pretty_abbrev_thy thy =
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  let
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    val names = display_names 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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fun get_theory thy name =
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  if theory_name thy <> name then
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    (case find_first (fn thy' => theory_name thy' = name) (ancestors_of thy) of
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      SOME thy' => thy'
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    | NONE => error ("Unknown ancestor theory " ^ quote name))
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  else if #stage (history_of thy) = finished then thy
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  else error ("Unfinished theory " ^ quote name);
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fun this_theory thy name =
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  if theory_name thy = name then thy
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  else get_theory thy name;
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(* build ids *)
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fun insert_id id ids = Inttab.update (id, ()) ids;
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fun merge_ids
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    (Theory (Theory_Id ({id = id1, ids = ids1, ...}, _), _, _))
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    (Theory (Theory_Id ({id = id2, ids = ids2, ...}, _), _, _)) =
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  Inttab.merge (K true) (ids1, ids2)
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  |> insert_id id1
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  |> insert_id id2;
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(* equality and inclusion *)
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val eq_thy_id = op = o apply2 (#id o identity_of_id);
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val eq_thy = op = o apply2 (#id o identity_of);
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fun proper_subthy_id (Theory_Id ({id, ...}, _), Theory_Id ({ids, ...}, _)) = Inttab.defined ids id;
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val proper_subthy = proper_subthy_id o apply2 theory_id;
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fun subthy_id p = eq_thy_id p orelse proper_subthy_id p;
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val subthy = subthy_id o apply2 theory_id;
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(* consistent ancestors *)
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fun eq_thy_consistent (thy1, thy2) =
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  eq_thy (thy1, thy2) orelse
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    (theory_name thy1 = theory_name thy2 andalso
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      raise THEORY ("Duplicate theory name", [thy1, thy2]));
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fun extend_ancestors thy thys =
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  if member eq_thy_consistent thys thy then
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    raise THEORY ("Duplicate theory node", thy :: thys)
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  else thy :: thys;
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val merge_ancestors = merge eq_thy_consistent;
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(** build theories **)
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(* primitives *)
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fun create_thy ids history ancestry data =
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  Theory (Theory_Id (make_identity (serial ()) ids, history), ancestry, data);
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val pre_pure_thy =
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  create_thy Inttab.empty (make_history PureN 0) (make_ancestry [] []) Datatab.empty;
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local
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fun change_thy finish f thy =
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  let
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    val Theory (Theory_Id ({id, ids}, {name, stage}), ancestry, data) = thy;
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    val (ancestry', data') =
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      if stage = finished then
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        (make_ancestry [thy] (extend_ancestors thy (ancestors_of thy)), extend_data data)
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      else (ancestry, data);
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    val history' = {name = name, stage = if finish then finished else stage + 1};
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    val ids' = insert_id id ids;
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    val data'' = f data';
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  in create_thy ids' history' ancestry' data'' end;
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in
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val update_thy = change_thy false;
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val extend_thy = update_thy I;
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val finish_thy = change_thy true I;
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end;
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(* named theory nodes *)
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local
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fun merge_thys pp (thy1, thy2) =
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  let
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    val ids = merge_ids thy1 thy2;
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    val history = make_history "" 0;
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    val ancestry = make_ancestry [] [];
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    val data = merge_data (pp thy1) (data_of thy1, data_of thy2);
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  in create_thy ids history ancestry data end;
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fun maximal_thys thys =
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  thys |> filter_out (fn thy => exists (fn thy' => proper_subthy (thy, thy')) thys);
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in
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fun begin_thy pp name imports =
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  if name = "" then error ("Bad theory name: " ^ quote name)
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  else
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    let
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      val parents = maximal_thys (distinct eq_thy imports);
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      val ancestors =
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        Library.foldl merge_ancestors ([], map ancestors_of parents)
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        |> fold extend_ancestors parents;
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      val Theory (Theory_Id ({ids, ...}, _), _, data) =
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        (case parents of
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          [] => error "Missing theory imports"
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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 history = make_history name 0;
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      val ancestry = make_ancestry parents ancestors;
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    in create_thy ids history ancestry data end;
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end;
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(* theory data *)
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structure Theory_Data =
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struct
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val declare = declare_theory_data;
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fun get k dest thy =
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  (case Datatab.lookup (data_of thy) k of
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    SOME x => x
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  | NONE => invoke_empty k) |> dest;
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fun put k mk x = update_thy (Datatab.update (k, mk x));
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end;
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(*** proof context ***)
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(* datatype Proof.context *)
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structure Proof =
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struct
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  datatype context = Context of Any.T Datatab.table * theory;
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end;
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(* proof data kinds *)
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local
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val kinds = Synchronized.var "Proof_Data" (Datatab.empty: (theory -> Any.T) Datatab.table);
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fun init_data thy =
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  Synchronized.value kinds |> Datatab.map (fn _ => fn init => init thy);
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fun init_new_data thy =
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  Synchronized.value kinds |> Datatab.fold (fn (k, init) => fn data =>
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    if Datatab.defined data k then data
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    else Datatab.update (k, init thy) data);
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fun init_fallback k thy =
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  (case Datatab.lookup (Synchronized.value kinds) k of
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    SOME init => init thy
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  | NONE => raise Fail "Invalid proof data identifier");
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in
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fun raw_transfer thy' (Proof.Context (data, thy)) =
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  let
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    val _ = subthy (thy, thy') orelse error "Cannot transfer proof context: not a super theory";
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    val data' = init_new_data thy' data;
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  in Proof.Context (data', thy') end;
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structure Proof_Context =
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struct
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  fun theory_of (Proof.Context (_, thy)) = thy;
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  fun init_global thy = Proof.Context (init_data thy, thy);
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  fun get_global thy name = init_global (get_theory thy name);
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end;
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structure Proof_Data =
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struct
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fun declare init =
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  let
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    val k = serial ();
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    val _ = Synchronized.change kinds (Datatab.update (k, init));
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  in k end;
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fun get k dest (Proof.Context (data, thy)) =
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  (case Datatab.lookup data k of
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    SOME x => x
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  | NONE => init_fallback k thy) |> dest;
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fun put k mk x (Proof.Context (data, thy)) =
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   440
  Proof.Context (Datatab.update (k, mk x) data, thy);
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end;
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end;
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18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   447
61044
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   448
(*** theory certificate ***)
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   449
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   450
datatype certificate = Certificate of theory | Certificate_Id of theory_id;
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   451
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   452
fun certificate_theory (Certificate thy) = thy
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   453
  | certificate_theory (Certificate_Id thy_id) =
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   454
      raise Fail ("No content for theory certificate " ^ quote (display_name thy_id));
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   455
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   456
fun certificate_theory_id (Certificate thy) = theory_id thy
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   457
  | certificate_theory_id (Certificate_Id thy_id) = thy_id;
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   458
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   459
fun eq_certificate (Certificate thy1, Certificate thy2) = eq_thy (thy1, thy2)
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   460
  | eq_certificate (Certificate_Id thy_id1, Certificate_Id thy_id2) = eq_thy_id (thy_id1, thy_id2)
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   461
  | eq_certificate _ = false;
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   462
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   463
fun join_certificate (cert1, cert2) =
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   464
  let val (thy_id1, thy_id2) = apply2 certificate_theory_id (cert1, cert2) in
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   465
    if eq_thy_id (thy_id1, thy_id2) then (case cert1 of Certificate _ => cert1 | _ => cert2)
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   466
    else if proper_subthy_id (thy_id2, thy_id1) then cert1
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   467
    else if proper_subthy_id (thy_id1, thy_id2) then cert2
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   468
    else
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   469
      raise Fail ("Cannot join unrelated theory certificates " ^
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   470
        quote (display_name thy_id1) ^ " and " ^ quote (display_name thy_id2))
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   471
  end;
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   472
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   473
b7af255dd200 more abstract theory certificate, which is not necessarily the full theory;
wenzelm
parents: 60948
diff changeset
   474
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   475
(*** generic context ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   476
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   477
datatype generic = Theory of theory | Proof of Proof.context;
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   478
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   479
fun cases f _ (Theory thy) = f thy
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   480
  | cases _ g (Proof prf) = g prf;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   481
19678
d1a15431de34 added mapping;
wenzelm
parents: 19482
diff changeset
   482
fun mapping f g = cases (Theory o f) (Proof o g);
21660
c86b761d6c06 added mapping_result;
wenzelm
parents: 21518
diff changeset
   483
fun mapping_result f g = cases (apsnd Theory o f) (apsnd Proof o g);
19678
d1a15431de34 added mapping;
wenzelm
parents: 19482
diff changeset
   484
23595
7ca68a2c8575 the_theory/proof: error instead of exception Fail;
wenzelm
parents: 23355
diff changeset
   485
val the_theory = cases I (fn _ => error "Ill-typed context: theory expected");
7ca68a2c8575 the_theory/proof: error instead of exception Fail;
wenzelm
parents: 23355
diff changeset
   486
val the_proof = cases (fn _ => error "Ill-typed context: proof expected") I;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   487
18731
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   488
fun map_theory f = Theory o f o the_theory;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   489
fun map_proof f = Proof o f o the_proof;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   490
26486
b65a5272b360 added map_theory_result, map_proof_result;
wenzelm
parents: 26463
diff changeset
   491
fun map_theory_result f = apsnd Theory o f o the_theory;
b65a5272b360 added map_theory_result, map_proof_result;
wenzelm
parents: 26463
diff changeset
   492
fun map_proof_result f = apsnd Proof o f o the_proof;
b65a5272b360 added map_theory_result, map_proof_result;
wenzelm
parents: 26463
diff changeset
   493
18731
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   494
fun theory_map f = the_theory o f o Theory;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   495
fun proof_map f = the_proof o f o Proof;
18665
5198a2c4c00e added map_theory, map_proof;
wenzelm
parents: 18632
diff changeset
   496
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41711
diff changeset
   497
val theory_of = cases I Proof_Context.theory_of;
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41711
diff changeset
   498
val proof_of = cases Proof_Context.init_global I;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   499
22085
c138cfd500f7 ML context: full generic context, tuned signature;
wenzelm
parents: 21962
diff changeset
   500
42383
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   501
(* pretty printing context *)
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   502
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   503
exception PRETTY of generic;
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   504
47005
421760a1efe7 maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents: 43684
diff changeset
   505
val pretty_generic = Pretty o PRETTY;
421760a1efe7 maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents: 43684
diff changeset
   506
val pretty = pretty_generic o Proof;
421760a1efe7 maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents: 43684
diff changeset
   507
val pretty_global = pretty_generic o Theory;
42383
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   508
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   509
fun pretty_context init (Pretty (PRETTY context)) = cases init I context;
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   510
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   511
22085
c138cfd500f7 ML context: full generic context, tuned signature;
wenzelm
parents: 21962
diff changeset
   512
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   513
(** thread data **)
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   514
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   515
local val tag = Universal.tag () : generic option Universal.tag in
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   516
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   517
fun thread_data () =
28122
3d099ce624e7 Thread.getLocal/setLocal;
wenzelm
parents: 27341
diff changeset
   518
  (case Thread.getLocal tag of
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   519
    SOME (SOME context) => SOME context
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   520
  | _ => NONE);
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   521
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   522
fun the_thread_data () =
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   523
  (case thread_data () of
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   524
    SOME context => context
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   525
  | _ => error "Unknown context");
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   526
28122
3d099ce624e7 Thread.getLocal/setLocal;
wenzelm
parents: 27341
diff changeset
   527
fun set_thread_data context = Thread.setLocal (tag, context);
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   528
fun setmp_thread_data context = Library.setmp_thread_data tag (thread_data ()) context;
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   529
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   530
end;
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   531
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   532
fun >>> f =
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   533
  let
26463
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   534
    val (res, context') = f (the_thread_data ());
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   535
    val _ = set_thread_data (SOME context');
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   536
  in res end;
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   537
26421
3dfb36923a56 nonfix >>;
wenzelm
parents: 26413
diff changeset
   538
nonfix >>;
26463
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   539
fun >> f = >>> (fn context => ((), f context));
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   540
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   541
val _ = set_thread_data (SOME (Theory pre_pure_thy));
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   542
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   543
end;
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   544
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   545
structure Basic_Context: BASIC_CONTEXT = Context;
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   546
open Basic_Context;
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   547
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   548
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   549
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   550
(*** type-safe interfaces for data declarations ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   551
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   552
(** theory data **)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   553
34259
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   554
signature THEORY_DATA_PP_ARGS =
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   555
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   556
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   557
  val empty: T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   558
  val extend: T -> T
42383
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   559
  val merge: Context.pretty -> T * T -> T
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   560
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   561
34259
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   562
signature THEORY_DATA_ARGS =
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   563
sig
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   564
  type T
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   565
  val empty: T
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   566
  val extend: T -> T
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   567
  val merge: T * T -> T
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   568
end;
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   569
34253
5930c6391126 removed further remains of mutable theory data (cf. 25bd3ed2ac9f);
wenzelm
parents: 34245
diff changeset
   570
signature THEORY_DATA =
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   571
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   572
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   573
  val get: theory -> T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   574
  val put: T -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   575
  val map: (T -> T) -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   576
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   577
34259
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   578
functor Theory_Data_PP(Data: THEORY_DATA_PP_ARGS): THEORY_DATA =
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   579
struct
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   580
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   581
type T = Data.T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   582
exception Data of T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   583
42818
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   584
val kind =
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   585
  Context.Theory_Data.declare
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   586
    (Position.thread_data ())
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   587
    (Data Data.empty)
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   588
    (fn Data x => Data (Data.extend x))
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   589
    (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
   590
33033
wenzelm
parents: 33031
diff changeset
   591
val get = Context.Theory_Data.get kind (fn Data x => x);
wenzelm
parents: 33031
diff changeset
   592
val put = Context.Theory_Data.put kind Data;
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   593
fun map f thy = put (f (get thy)) thy;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   594
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   595
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   596
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   597
functor Theory_Data(Data: THEORY_DATA_ARGS): THEORY_DATA =
34259
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   598
  Theory_Data_PP
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   599
  (
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   600
    type T = Data.T;
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   601
    val empty = Data.empty;
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   602
    val extend = Data.extend;
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   603
    fun merge _ = Data.merge;
2ba492b8b6e8 discontinued old TheoryDataFun, but retain Theory_Data_PP with is Pretty.pp argument to merge (still required in exotic situations -- hard to get rid of);
wenzelm
parents: 34253
diff changeset
   604
  );
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   605
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   606
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   607
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   608
(** proof data **)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   609
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   610
signature PROOF_DATA_ARGS =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   611
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   612
  type T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   613
  val init: theory -> T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   614
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   615
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   616
signature PROOF_DATA =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   617
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   618
  type T
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   619
  val get: Proof.context -> T
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   620
  val put: T -> Proof.context -> Proof.context
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   621
  val map: (T -> T) -> Proof.context -> Proof.context
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   622
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   623
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   624
functor Proof_Data(Data: PROOF_DATA_ARGS): PROOF_DATA =
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   625
struct
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   626
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   627
type T = Data.T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   628
exception Data of T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   629
33033
wenzelm
parents: 33031
diff changeset
   630
val kind = Context.Proof_Data.declare (Data o Data.init);
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   631
33033
wenzelm
parents: 33031
diff changeset
   632
val get = Context.Proof_Data.get kind (fn Data x => x);
wenzelm
parents: 33031
diff changeset
   633
val put = Context.Proof_Data.put kind Data;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   634
fun map f prf = put (f (get prf)) prf;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   635
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   636
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   637
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   638
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   639
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   640
(** generic data **)
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   641
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   642
signature GENERIC_DATA_ARGS =
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   643
sig
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   644
  type T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   645
  val empty: T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   646
  val extend: T -> T
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   647
  val merge: T * T -> T
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   648
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   649
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   650
signature GENERIC_DATA =
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   651
sig
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   652
  type T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   653
  val get: Context.generic -> T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   654
  val put: T -> Context.generic -> Context.generic
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   655
  val map: (T -> T) -> Context.generic -> Context.generic
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   656
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   657
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   658
functor Generic_Data(Data: GENERIC_DATA_ARGS): GENERIC_DATA =
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   659
struct
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   660
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   661
structure Thy_Data = Theory_Data(Data);
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   662
structure Prf_Data = Proof_Data(type T = Data.T val init = Thy_Data.get);
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   663
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   664
type T = Data.T;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   665
33033
wenzelm
parents: 33031
diff changeset
   666
fun get (Context.Theory thy) = Thy_Data.get thy
wenzelm
parents: 33031
diff changeset
   667
  | get (Context.Proof prf) = Prf_Data.get prf;
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   668
33033
wenzelm
parents: 33031
diff changeset
   669
fun put x (Context.Theory thy) = Context.Theory (Thy_Data.put x thy)
wenzelm
parents: 33031
diff changeset
   670
  | put x (Context.Proof prf) = Context.Proof (Prf_Data.put x prf);
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   671
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   672
fun map f ctxt = put (f (get ctxt)) ctxt;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   673
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   674
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   675
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   676
(*hide private interface*)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   677
structure Context: CONTEXT = Context;