src/Pure/context.ML
author wenzelm
Thu, 18 Jul 2013 13:12:54 +0200
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immutable theory values with full stamp record of every update (increase of stamp size for HOL: 20000 -> 100000, JinjaThreads: 65000 -> 300000) -- minimal measurable impact on inference kernel performance;
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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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  type theory_ref
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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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  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_name: theory -> string
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  val PureN: 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 deref: theory_ref -> theory
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  val check_thy: theory -> theory_ref
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  val eq_thy: theory * theory -> bool
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  val subthy: theory * theory -> bool
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  val joinable: theory * theory -> bool
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  val merge: theory * theory -> theory
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  val merge_refs: theory_ref * theory_ref -> theory_ref
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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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  (*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 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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   {id: serial,                   (*identifier*)
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    ids: Inttab.set} *            (*cumulative identifiers -- symbolic body content*)
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   (*data*)
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   Any.T Datatab.table *          (*body content*)
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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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   (*history*)
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   {name: string,                 (*official theory name*)
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    stage: int};                  (*counter for anonymous updates*)
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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 id ids = {id = id, ids = ids};
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fun make_ancestry parents ancestors = {parents = parents, ancestors = ancestors};
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fun make_history name stage = {name = name, stage = stage};
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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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(* names *)
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val PureN = "Pure";
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val finished = ~1;
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fun display_names thy =
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  let
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    val {name, stage} = history_of thy;
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    val name' =
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      if stage = finished then name
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      else name ^ ":" ^ string_of_int stage;
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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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(* theory references *)  (* FIXME dummy *)
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datatype theory_ref = Theory_Ref of theory;
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fun deref (Theory_Ref thy) = thy;
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fun check_thy thy = Theory_Ref thy;
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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 ({id = id1, ids = ids1, ...}, _, _, _))
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    (Theory ({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 = op = o pairself (#id o identity_of);
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fun proper_subthy (Theory ({id, ...}, _, _, _), Theory ({ids, ...}, _, _, _)) =
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  Inttab.defined ids id;
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fun subthy thys = eq_thy thys orelse proper_subthy thys;
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fun joinable (thy1, thy2) = subthy (thy1, thy2) orelse subthy (thy2, thy1);
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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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(* trivial merge *)
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fun merge (thy1, thy2) =
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  if eq_thy (thy1, thy2) then thy1
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  else if proper_subthy (thy2, thy1) then thy1
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  else if proper_subthy (thy1, thy2) then thy2
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  else error (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) = check_thy (merge (deref ref1, deref ref2));
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(** build theories **)
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(* primitives *)
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fun create_thy ids data ancestry history =
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  Theory (make_identity (serial ()) ids, data, ancestry, history);
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val pre_pure_thy =
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  create_thy Inttab.empty Datatab.empty (make_ancestry [] []) (make_history PureN 0);
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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 ({id, ids}, data, ancestry, {name, stage}) = thy;
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    val (data', ancestry') =
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      if stage = finished then
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        (extend_data data, make_ancestry [thy] (extend_ancestors thy (ancestors_of thy)))
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      else (data, ancestry);
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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' data'' ancestry' history' 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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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 data = merge_data (pp thy1) (data_of thy1, data_of thy2);
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    val ancestry = make_ancestry [] [];
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    val history = make_history "" 0;
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  in create_thy ids data ancestry history 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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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 ({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 ancestry = make_ancestry parents ancestors;
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      val history = make_history name 0;
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    in create_thy ids data ancestry history 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_ref;
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end;
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fun theory_of_proof (Proof.Context (_, thy_ref)) = deref thy_ref;
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fun data_of_proof (Proof.Context (data, _)) = data;
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fun map_prf f (Proof.Context (data, thy_ref)) = Proof.Context (f data, thy_ref);
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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 invoke_init k =
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  (case Datatab.lookup (Synchronized.value kinds) k of
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    SOME init => init
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  | NONE => raise Fail "Invalid proof data identifier");
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fun init_data thy =
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   402
  Datatab.map (fn k => fn _ => invoke_init k thy) (Synchronized.value kinds);
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fun init_new_data data thy =
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  Datatab.merge (K true) (data, init_data thy);
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in
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fun raw_transfer thy' (Proof.Context (data, thy_ref)) =
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  let
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    val thy = deref thy_ref;
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    val _ = subthy (thy, thy') orelse error "Cannot transfer proof context: not a super theory";
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    val _ = check_thy thy;
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   414
    val data' = init_new_data data thy';
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   415
    val thy_ref' = check_thy thy';
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   416
  in Proof.Context (data', thy_ref') end;
22847
22da6c4bc422 simplified DataFun interfaces: removed name/print, use adhoc value for uninitialized data, init only required for impure data;
wenzelm
parents: 22827
diff changeset
   417
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41711
diff changeset
   418
structure Proof_Context =
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   419
struct
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   420
  val theory_of = theory_of_proof;
36610
bafd82950e24 renamed ProofContext.init to ProofContext.init_global to emphasize that this is not the real thing;
wenzelm
parents: 34259
diff changeset
   421
  fun init_global thy = Proof.Context (init_data thy, check_thy thy);
51686
532e0ac5a66d added ML antiquotation @{theory_context};
wenzelm
parents: 51368
diff changeset
   422
  fun get_global thy name = init_global (get_theory thy name);
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   423
end;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   424
33033
wenzelm
parents: 33031
diff changeset
   425
structure Proof_Data =
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   426
struct
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   427
22847
22da6c4bc422 simplified DataFun interfaces: removed name/print, use adhoc value for uninitialized data, init only required for impure data;
wenzelm
parents: 22827
diff changeset
   428
fun declare init =
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   429
  let
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   430
    val k = serial ();
43684
85388f5570c4 prefer Synchronized.var;
wenzelm
parents: 43610
diff changeset
   431
    val _ = Synchronized.change kinds (Datatab.update (k, init));
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   432
  in k end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   433
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   434
fun get k dest prf =
52682
wenzelm
parents: 51686
diff changeset
   435
  (case Datatab.lookup (data_of_proof prf) k of
22847
22da6c4bc422 simplified DataFun interfaces: removed name/print, use adhoc value for uninitialized data, init only required for impure data;
wenzelm
parents: 22827
diff changeset
   436
    SOME x => x
52682
wenzelm
parents: 51686
diff changeset
   437
  | NONE => invoke_init k (Proof_Context.theory_of prf)) |> dest;  (*adhoc value for old theories*)
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   438
19028
6c238953f66c structure Datatab: private copy avoids potential conflict of table exceptions;
wenzelm
parents: 18931
diff changeset
   439
fun put k mk x = map_prf (Datatab.update (k, mk x));
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   440
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   441
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   442
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   443
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   444
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   445
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   446
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   447
(*** generic context ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   448
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   449
datatype generic = Theory of theory | Proof of Proof.context;
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   450
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   451
fun cases f _ (Theory thy) = f thy
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   452
  | cases _ g (Proof prf) = g prf;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   453
19678
d1a15431de34 added mapping;
wenzelm
parents: 19482
diff changeset
   454
fun mapping f g = cases (Theory o f) (Proof o g);
21660
c86b761d6c06 added mapping_result;
wenzelm
parents: 21518
diff changeset
   455
fun mapping_result f g = cases (apsnd Theory o f) (apsnd Proof o g);
19678
d1a15431de34 added mapping;
wenzelm
parents: 19482
diff changeset
   456
23595
7ca68a2c8575 the_theory/proof: error instead of exception Fail;
wenzelm
parents: 23355
diff changeset
   457
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
   458
val the_proof = cases (fn _ => error "Ill-typed context: proof expected") I;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   459
18731
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   460
fun map_theory f = Theory o f o the_theory;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   461
fun map_proof f = Proof o f o the_proof;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   462
26486
b65a5272b360 added map_theory_result, map_proof_result;
wenzelm
parents: 26463
diff changeset
   463
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
   464
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
   465
18731
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   466
fun theory_map f = the_theory o f o Theory;
3989c3c41983 rename map_theory/proof to theory/proof_map;
wenzelm
parents: 18711
diff changeset
   467
fun proof_map f = the_proof o f o Proof;
18665
5198a2c4c00e added map_theory, map_proof;
wenzelm
parents: 18632
diff changeset
   468
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41711
diff changeset
   469
val theory_of = cases I Proof_Context.theory_of;
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41711
diff changeset
   470
val proof_of = cases Proof_Context.init_global I;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   471
22085
c138cfd500f7 ML context: full generic context, tuned signature;
wenzelm
parents: 21962
diff changeset
   472
42383
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   473
(* pretty printing context *)
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   474
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   475
exception PRETTY of generic;
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   476
47005
421760a1efe7 maintain generic context naming in structure Name_Space (NB: empty = default_naming, init = local_naming);
wenzelm
parents: 43684
diff changeset
   477
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
   478
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
   479
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
   480
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   481
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
   482
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   483
22085
c138cfd500f7 ML context: full generic context, tuned signature;
wenzelm
parents: 21962
diff changeset
   484
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   485
(** thread data **)
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   486
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   487
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
   488
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   489
fun thread_data () =
28122
3d099ce624e7 Thread.getLocal/setLocal;
wenzelm
parents: 27341
diff changeset
   490
  (case Thread.getLocal tag of
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   491
    SOME (SOME context) => SOME context
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   492
  | _ => NONE);
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   493
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   494
fun the_thread_data () =
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   495
  (case thread_data () of
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   496
    SOME context => context
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   497
  | _ => error "Unknown context");
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   498
28122
3d099ce624e7 Thread.getLocal/setLocal;
wenzelm
parents: 27341
diff changeset
   499
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
   500
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
   501
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   502
end;
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   503
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   504
fun >>> f =
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   505
  let
26463
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   506
    val (res, context') = f (the_thread_data ());
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   507
    val _ = set_thread_data (SOME context');
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   508
  in res end;
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   509
26421
3dfb36923a56 nonfix >>;
wenzelm
parents: 26413
diff changeset
   510
nonfix >>;
26463
9283b4185fdf Context.>> : operate on Context.generic;
wenzelm
parents: 26435
diff changeset
   511
fun >> f = >>> (fn context => ((), f context));
26413
003dd6155870 added thread data (formerly global ref in ML/ml_context.ML);
wenzelm
parents: 24559
diff changeset
   512
26428
5b2beca2087d eliminated theory ProtoPure;
wenzelm
parents: 26421
diff changeset
   513
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
   514
6185
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   515
end;
11bf7a8b6a02 Global theory context (used to be in Thy/context.ML);
wenzelm
parents:
diff changeset
   516
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   517
structure Basic_Context: BASIC_CONTEXT = Context;
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   518
open Basic_Context;
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   519
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   520
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   521
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   522
(*** type-safe interfaces for data declarations ***)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   523
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   524
(** theory data **)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   525
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
   526
signature THEORY_DATA_PP_ARGS =
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   527
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   528
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   529
  val empty: T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   530
  val extend: T -> T
42383
0ae4ad40d7b5 simplified pretty printing context, which is only required for certain kernel operations;
wenzelm
parents: 42360
diff changeset
   531
  val merge: Context.pretty -> T * T -> T
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   532
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   533
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
   534
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
   535
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
   536
  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
   537
  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
   538
  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
   539
  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
   540
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
   541
34253
5930c6391126 removed further remains of mutable theory data (cf. 25bd3ed2ac9f);
wenzelm
parents: 34245
diff changeset
   542
signature THEORY_DATA =
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   543
sig
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   544
  type T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   545
  val get: theory -> T
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   546
  val put: T -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   547
  val map: (T -> T) -> theory -> theory
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   548
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   549
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
   550
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
   551
struct
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   552
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   553
type T = Data.T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   554
exception Data of T;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   555
42818
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   556
val kind =
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   557
  Context.Theory_Data.declare
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   558
    (Position.thread_data ())
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   559
    (Data Data.empty)
128cc195ced3 timing of Theory_Data operations, with implicit thread positions when functor is applied;
wenzelm
parents: 42383
diff changeset
   560
    (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
   561
    (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
   562
33033
wenzelm
parents: 33031
diff changeset
   563
val get = Context.Theory_Data.get kind (fn Data x => x);
wenzelm
parents: 33031
diff changeset
   564
val put = Context.Theory_Data.put kind Data;
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   565
fun map f thy = put (f (get thy)) thy;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   566
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   567
end;
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   568
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   569
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
   570
  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
   571
  (
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
   572
    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
   573
    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
   574
    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
   575
    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
   576
  );
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   577
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   578
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   579
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   580
(** proof data **)
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   581
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   582
signature PROOF_DATA_ARGS =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   583
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   584
  type T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   585
  val init: theory -> T
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   586
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   587
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   588
signature PROOF_DATA =
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   589
sig
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   590
  type T
33031
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   591
  val get: Proof.context -> T
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   592
  val put: T -> Proof.context -> Proof.context
b75c35574e04 backpatching of structure Proof and ProofContext -- avoid odd aliases;
wenzelm
parents: 32784
diff changeset
   593
  val map: (T -> T) -> Proof.context -> Proof.context
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   594
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   595
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   596
functor Proof_Data(Data: PROOF_DATA_ARGS): PROOF_DATA =
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   597
struct
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   598
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   599
type T = Data.T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   600
exception Data of T;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   601
33033
wenzelm
parents: 33031
diff changeset
   602
val kind = Context.Proof_Data.declare (Data o Data.init);
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   603
33033
wenzelm
parents: 33031
diff changeset
   604
val get = Context.Proof_Data.get kind (fn Data x => x);
wenzelm
parents: 33031
diff changeset
   605
val put = Context.Proof_Data.put kind Data;
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   606
fun map f prf = put (f (get prf)) prf;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   607
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   608
end;
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   609
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   610
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   611
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   612
(** generic data **)
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   613
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   614
signature GENERIC_DATA_ARGS =
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   615
sig
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   616
  type T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   617
  val empty: T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   618
  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
   619
  val merge: T * T -> T
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   620
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   621
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   622
signature GENERIC_DATA =
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   623
sig
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   624
  type T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   625
  val get: Context.generic -> T
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   626
  val put: T -> Context.generic -> Context.generic
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   627
  val map: (T -> T) -> Context.generic -> Context.generic
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   628
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   629
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   630
functor Generic_Data(Data: GENERIC_DATA_ARGS): GENERIC_DATA =
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   631
struct
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   632
33517
d064fa48f305 modernized/simplified functor Theory_Data, Proof_Data, Generic_Data: eliminated Pretty.pp, discontinued mutable data;
wenzelm
parents: 33033
diff changeset
   633
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
   634
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
   635
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   636
type T = Data.T;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   637
33033
wenzelm
parents: 33031
diff changeset
   638
fun get (Context.Theory thy) = Thy_Data.get thy
wenzelm
parents: 33031
diff changeset
   639
  | get (Context.Proof prf) = Prf_Data.get prf;
18632
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   640
33033
wenzelm
parents: 33031
diff changeset
   641
fun put x (Context.Theory thy) = Context.Theory (Thy_Data.put x thy)
wenzelm
parents: 33031
diff changeset
   642
  | 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
   643
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   644
fun map f ctxt = put (f (get ctxt)) ctxt;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   645
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   646
end;
3149c6abe876 support for generic contexts with data;
wenzelm
parents: 17756
diff changeset
   647
16533
f1152f75f6fc begin_thy: merge maximal imports;
wenzelm
parents: 16489
diff changeset
   648
(*hide private interface*)
16436
7eb6b6cbd166 added type theory: generic theory contexts with unique identity,
wenzelm
parents: 15801
diff changeset
   649
structure Context: CONTEXT = Context;
20297
a9a917b356af fake predeclaration of type Proof.context;
wenzelm
parents: 19815
diff changeset
   650