src/Pure/global_theory.ML
author wenzelm
Tue Jul 30 15:09:25 2013 +0200 (2013-07-30 ago)
changeset 52788 da1fdbfebd39
parent 50201 c26369c9eda6
child 55740 11dd48f84441
permissions -rw-r--r--
type theory is purely value-oriented;
     1 (*  Title:      Pure/global_theory.ML
     2     Author:     Makarius
     3 
     4 Global theory content: stored facts.
     5 *)
     6 
     7 signature GLOBAL_THEORY =
     8 sig
     9   val facts_of: theory -> Facts.T
    10   val intern_fact: theory -> xstring -> string
    11   val defined_fact: theory -> string -> bool
    12   val hide_fact: bool -> string -> theory -> theory
    13   val get_fact: Context.generic -> theory -> Facts.ref -> thm list
    14   val get_thms: theory -> xstring -> thm list
    15   val get_thm: theory -> xstring -> thm
    16   val all_thms_of: theory -> (string * thm) list
    17   val map_facts: ('a -> 'b) -> ('c * ('a list * 'd) list) list -> ('c * ('b list * 'd) list) list
    18   val burrow_fact: ('a list -> 'b list) -> ('a list * 'c) list -> ('b list * 'c) list
    19   val burrow_facts: ('a list -> 'b list) ->
    20     ('c * ('a list * 'd) list) list -> ('c * ('b list * 'd) list) list
    21   val name_multi: string -> 'a list -> (string * 'a) list
    22   val name_thm: bool -> bool -> string -> thm -> thm
    23   val name_thms: bool -> bool -> string -> thm list -> thm list
    24   val name_thmss: bool -> string -> (thm list * 'a) list -> (thm list * 'a) list
    25   val store_thms: binding * thm list -> theory -> thm list * theory
    26   val store_thm: binding * thm -> theory -> thm * theory
    27   val store_thm_open: binding * thm -> theory -> thm * theory
    28   val add_thms: ((binding * thm) * attribute list) list -> theory -> thm list * theory
    29   val add_thm: (binding * thm) * attribute list -> theory -> thm * theory
    30   val add_thmss: ((binding * thm list) * attribute list) list -> theory -> thm list list * theory
    31   val add_thms_dynamic: binding * (Context.generic -> thm list) -> theory -> theory
    32   val note_thmss: string -> (Thm.binding * (thm list * attribute list) list) list
    33     -> theory -> (string * thm list) list * theory
    34   val add_defs: bool -> ((binding * term) * attribute list) list ->
    35     theory -> thm list * theory
    36   val add_defs_unchecked: bool -> ((binding * term) * attribute list) list ->
    37     theory -> thm list * theory
    38   val add_defs_cmd: bool -> ((binding * string) * attribute list) list ->
    39     theory -> thm list * theory
    40   val add_defs_unchecked_cmd: bool -> ((binding * string) * attribute list) list ->
    41     theory -> thm list * theory
    42 end;
    43 
    44 structure Global_Theory: GLOBAL_THEORY =
    45 struct
    46 
    47 (** theory data **)
    48 
    49 structure Data = Theory_Data
    50 (
    51   type T = Facts.T;
    52   val empty = Facts.empty;
    53   val extend = I;
    54   val merge = Facts.merge;
    55 );
    56 
    57 val facts_of = Data.get;
    58 
    59 val intern_fact = Facts.intern o facts_of;
    60 val defined_fact = Facts.defined o facts_of;
    61 
    62 fun hide_fact fully name = Data.map (Facts.hide fully name);
    63 
    64 
    65 (** retrieve theorems **)
    66 
    67 fun get_fact context thy xthmref =
    68   let
    69     val facts = facts_of thy;
    70     val xname = Facts.name_of_ref xthmref;
    71     val pos = Facts.pos_of_ref xthmref;
    72 
    73     val name =
    74       (case intern_fact thy xname of
    75         "_" => "Pure.asm_rl"
    76       | name => name);
    77     val res = Facts.lookup context facts name;
    78   in
    79     (case res of
    80       NONE => error ("Unknown fact " ^ quote name ^ Position.here pos)
    81     | SOME (static, ths) =>
    82         (Context_Position.report_generic context pos (Name_Space.markup (Facts.space_of facts) name);
    83          if static then ()
    84          else Context_Position.report_generic context pos (Markup.dynamic_fact name);
    85          Facts.select xthmref (map (Thm.transfer thy) ths)))
    86   end;
    87 
    88 fun get_thms thy = get_fact (Context.Theory thy) thy o Facts.named;
    89 fun get_thm thy name = Facts.the_single name (get_thms thy name);
    90 
    91 fun all_thms_of thy =
    92   Facts.fold_static (fn (_, ths) => append (map (`(Thm.get_name_hint)) ths)) (facts_of thy) [];
    93 
    94 
    95 
    96 (** store theorems **)
    97 
    98 (* fact specifications *)
    99 
   100 fun map_facts f = map (apsnd (map (apfst (map f))));
   101 fun burrow_fact f = split_list #>> burrow f #> op ~~;
   102 fun burrow_facts f = split_list ##> burrow (burrow_fact f) #> op ~~;
   103 
   104 
   105 (* naming *)
   106 
   107 fun name_multi name [x] = [(name, x)]
   108   | name_multi "" xs = map (pair "") xs
   109   | name_multi name xs = map_index (fn (i, x) => (name ^ "_" ^ string_of_int (i + 1), x)) xs;
   110 
   111 fun name_thm pre official name thm = thm
   112   |> (if not official orelse pre andalso Thm.derivation_name thm <> "" then I
   113       else Thm.name_derivation name)
   114   |> (if name = "" orelse pre andalso Thm.has_name_hint thm then I
   115       else Thm.put_name_hint name);
   116 
   117 fun name_thms pre official name xs =
   118   map (uncurry (name_thm pre official)) (name_multi name xs);
   119 
   120 fun name_thmss official name fact =
   121   burrow_fact (name_thms true official name) fact;
   122 
   123 
   124 (* enter_thms *)
   125 
   126 fun register_proofs thms thy = (thms, Thm.register_proofs thms thy);
   127 
   128 fun enter_thms pre_name post_name app_att (b, thms) thy =
   129   if Binding.is_empty b
   130   then app_att thms thy |-> register_proofs
   131   else
   132     let
   133       val name = Sign.full_name thy b;
   134       val (thms', thy') = app_att (pre_name name thms) thy |>> post_name name |-> register_proofs;
   135       val thms'' = map (Thm.transfer thy') thms';
   136       val thy'' = thy' |> Data.map
   137         (Facts.add_static (Context.Theory thy') {strict = true, index = false} (b, thms'') #> snd);
   138     in (thms'', thy'') end;
   139 
   140 
   141 (* store_thm(s) *)
   142 
   143 fun store_thms (b, thms) =
   144   enter_thms (name_thms true true) (name_thms false true) pair (b, thms);
   145 
   146 fun store_thm (b, th) = store_thms (b, [th]) #>> the_single;
   147 
   148 fun store_thm_open (b, th) =
   149   enter_thms (name_thms true false) (name_thms false false) pair (b, [th]) #>> the_single;
   150 
   151 
   152 (* add_thms(s) *)
   153 
   154 fun add_thms_atts pre_name ((b, thms), atts) =
   155   enter_thms pre_name (name_thms false true) (fold_map (Thm.theory_attributes atts)) (b, thms);
   156 
   157 fun gen_add_thmss pre_name =
   158   fold_map (add_thms_atts pre_name);
   159 
   160 fun gen_add_thms pre_name args =
   161   apfst (map hd) o gen_add_thmss pre_name (map (apfst (apsnd single)) args);
   162 
   163 val add_thmss = gen_add_thmss (name_thms true true);
   164 val add_thms = gen_add_thms (name_thms true true);
   165 val add_thm = yield_singleton add_thms;
   166 
   167 
   168 (* add_thms_dynamic *)
   169 
   170 fun add_thms_dynamic (b, f) thy = thy
   171   |> Data.map (Facts.add_dynamic (Context.Theory thy) (b, f) #> snd);
   172 
   173 
   174 (* note_thmss *)
   175 
   176 fun note_thmss kind = fold_map (fn ((b, more_atts), facts) => fn thy =>
   177   let
   178     val name = Sign.full_name thy b;
   179     fun app (ths, atts) =
   180       fold_map (Thm.theory_attributes (surround (Thm.kind kind) (atts @ more_atts))) ths;
   181     val (thms, thy') =
   182       enter_thms (name_thmss true) (name_thms false true) (apfst flat oo fold_map app)
   183         (b, facts) thy;
   184   in ((name, thms), thy') end);
   185 
   186 
   187 (* store axioms as theorems *)
   188 
   189 local
   190 
   191 fun no_read _ (_, t) = t;
   192 
   193 fun read ctxt (b, str) =
   194   Syntax.read_prop ctxt str handle ERROR msg =>
   195     cat_error msg ("The error(s) above occurred in definition " ^ Binding.print b);
   196 
   197 fun add prep unchecked overloaded = fold_map (fn ((b, raw_prop), atts) => fn thy =>
   198   let
   199     val ctxt = Syntax.init_pretty_global thy;
   200     val prop = prep ctxt (b, raw_prop);
   201     val ((_, def), thy') = Thm.add_def ctxt unchecked overloaded (b, prop) thy;
   202     val thm = def
   203       |> Thm.forall_intr_frees
   204       |> Thm.forall_elim_vars 0
   205       |> Thm.varifyT_global;
   206   in yield_singleton (gen_add_thms (K I)) ((b, thm), atts) thy' end);
   207 
   208 in
   209 
   210 val add_defs = add no_read false;
   211 val add_defs_unchecked = add no_read true;
   212 val add_defs_cmd = add read false;
   213 val add_defs_unchecked_cmd = add read true;
   214 
   215 end;
   216 
   217 end;