src/Pure/Isar/local_theory.ML
author wenzelm
Mon Feb 25 16:31:19 2008 +0100 (2008-02-25 ago)
changeset 26131 91024979b9eb
parent 25984 da0399c9ffcb
child 28017 4919bd124a58
permissions -rw-r--r--
maintain group in lthy data, implicit use in operations;
tuned signature;
added group_position_of;
     1 (*  Title:      Pure/Isar/local_theory.ML
     2     ID:         $Id$
     3     Author:     Makarius
     4 
     5 Local theory operations, with abstract target context.
     6 *)
     7 
     8 type local_theory = Proof.context;
     9 
    10 signature LOCAL_THEORY =
    11 sig
    12   type operations
    13   val group_of: local_theory -> string
    14   val group_properties_of: local_theory -> Markup.property list
    15   val group_position_of: local_theory -> Markup.property list
    16   val set_group: string -> local_theory -> local_theory
    17   val target_of: local_theory -> Proof.context
    18   val raw_theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
    19   val raw_theory: (theory -> theory) -> local_theory -> local_theory
    20   val full_naming: local_theory -> NameSpace.naming
    21   val full_name: local_theory -> bstring -> string
    22   val theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
    23   val theory: (theory -> theory) -> local_theory -> local_theory
    24   val target_result: (Proof.context -> 'a * Proof.context) -> local_theory -> 'a * local_theory
    25   val target: (Proof.context -> Proof.context) -> local_theory -> local_theory
    26   val affirm: local_theory -> local_theory
    27   val pretty: local_theory -> Pretty.T list
    28   val axioms: string ->
    29     ((bstring * typ) * mixfix) list * ((bstring * Attrib.src list) * term list) list -> local_theory
    30     -> (term list * (bstring * thm list) list) * local_theory
    31   val abbrev: Syntax.mode -> (bstring * mixfix) * term -> local_theory ->
    32     (term * term) * local_theory
    33   val define: string -> (bstring * mixfix) * ((bstring * Attrib.src list) * term) -> local_theory ->
    34     (term * (bstring * thm)) * local_theory
    35   val note: string -> (bstring * Attrib.src list) * thm list ->
    36     local_theory -> (bstring * thm list) * local_theory
    37   val notes: string -> ((bstring * Attrib.src list) * (thm list * Attrib.src list) list) list ->
    38     local_theory -> (bstring * thm list) list * local_theory
    39   val type_syntax: declaration -> local_theory -> local_theory
    40   val term_syntax: declaration -> local_theory -> local_theory
    41   val declaration: declaration -> local_theory -> local_theory
    42   val notation: bool -> Syntax.mode -> (term * mixfix) list -> local_theory -> local_theory
    43   val target_morphism: local_theory -> morphism
    44   val init: string -> operations -> Proof.context -> local_theory
    45   val restore: local_theory -> local_theory
    46   val reinit: local_theory -> local_theory
    47   val exit: local_theory -> Proof.context
    48 end;
    49 
    50 structure LocalTheory: LOCAL_THEORY =
    51 struct
    52 
    53 (** local theory data **)
    54 
    55 (* type lthy *)
    56 
    57 type operations =
    58  {pretty: local_theory -> Pretty.T list,
    59   axioms: string ->
    60     ((bstring * typ) * mixfix) list * ((bstring * Attrib.src list) * term list) list -> local_theory
    61     -> (term list * (bstring * thm list) list) * local_theory,
    62   abbrev: Syntax.mode -> (bstring * mixfix) * term -> local_theory -> (term * term) * local_theory,
    63   define: string ->
    64     (bstring * mixfix) * ((bstring * Attrib.src list) * term) -> local_theory ->
    65     (term * (bstring * thm)) * local_theory,
    66   notes: string ->
    67     ((bstring * Attrib.src list) * (thm list * Attrib.src list) list) list ->
    68     local_theory -> (bstring * thm list) list * local_theory,
    69   type_syntax: declaration -> local_theory -> local_theory,
    70   term_syntax: declaration -> local_theory -> local_theory,
    71   declaration: declaration -> local_theory -> local_theory,
    72   reinit: local_theory -> local_theory,
    73   exit: local_theory -> Proof.context};
    74 
    75 datatype lthy = LThy of
    76  {group: string,
    77   theory_prefix: string,
    78   operations: operations,
    79   target: Proof.context};
    80 
    81 fun make_lthy (group, theory_prefix, operations, target) =
    82   LThy {group = group, theory_prefix = theory_prefix, operations = operations, target = target};
    83 
    84 
    85 (* context data *)
    86 
    87 structure Data = ProofDataFun
    88 (
    89   type T = lthy option;
    90   fun init _ = NONE;
    91 );
    92 
    93 fun get_lthy lthy =
    94   (case Data.get lthy of
    95     NONE => error "No local theory context"
    96   | SOME (LThy data) => data);
    97 
    98 fun map_lthy f lthy =
    99   let val {group, theory_prefix, operations, target} = get_lthy lthy
   100   in Data.put (SOME (make_lthy (f (group, theory_prefix, operations, target)))) lthy end;
   101 
   102 
   103 (* group *)
   104 
   105 val group_of = #group o get_lthy;
   106 
   107 fun group_properties_of lthy =
   108   (case group_of lthy of
   109     "" => []
   110   | group => [(Markup.groupN, group)]);
   111 
   112 fun group_position_of lthy =
   113   group_properties_of lthy @ Position.properties_of (Position.thread_data ());
   114 
   115 fun set_group group = map_lthy (fn (_, theory_prefix, operations, target) =>
   116   (group, theory_prefix, operations, target));
   117 
   118 
   119 (* target *)
   120 
   121 val target_of = #target o get_lthy;
   122 val affirm = tap target_of;
   123 
   124 fun map_target f = map_lthy (fn (group, theory_prefix, operations, target) =>
   125   (group, theory_prefix, operations, f target));
   126 
   127 
   128 (* substructure mappings *)
   129 
   130 fun raw_theory_result f lthy =
   131   let
   132     val (res, thy') = f (ProofContext.theory_of lthy);
   133     val lthy' = lthy
   134       |> map_target (ProofContext.transfer thy')
   135       |> ProofContext.transfer thy';
   136   in (res, lthy') end;
   137 
   138 fun raw_theory f = #2 o raw_theory_result (f #> pair ());
   139 
   140 fun full_naming lthy =
   141   Sign.naming_of (ProofContext.theory_of lthy)
   142   |> NameSpace.sticky_prefix (#theory_prefix (get_lthy lthy))
   143   |> NameSpace.qualified_names;
   144 
   145 val full_name = NameSpace.full o full_naming;
   146 
   147 fun theory_result f lthy = lthy |> raw_theory_result (fn thy => thy
   148   |> Sign.sticky_prefix (#theory_prefix (get_lthy lthy))
   149   |> Sign.qualified_names
   150   |> f
   151   ||> Sign.restore_naming thy);
   152 
   153 fun theory f = #2 o theory_result (f #> pair ());
   154 
   155 fun target_result f lthy =
   156   let
   157     val (res, ctxt') = f (target_of lthy);
   158     val thy' = ProofContext.theory_of ctxt';
   159     val lthy' = lthy
   160       |> map_target (K ctxt')
   161       |> ProofContext.transfer thy';
   162   in (res, lthy') end;
   163 
   164 fun target f = #2 o target_result (f #> pair ());
   165 
   166 
   167 (* basic operations *)
   168 
   169 fun operation f lthy = f (#operations (get_lthy lthy)) lthy;
   170 fun operation1 f x = operation (fn ops => f ops x);
   171 fun operation2 f x y lthy = operation (fn ops => f ops x y) lthy;
   172 
   173 val pretty = operation #pretty;
   174 val axioms = operation2 #axioms;
   175 val abbrev = operation2 #abbrev;
   176 val define = operation2 #define;
   177 val notes = operation2 #notes;
   178 val type_syntax = operation1 #type_syntax;
   179 val term_syntax = operation1 #term_syntax;
   180 val declaration = operation1 #declaration;
   181 
   182 fun note kind (a, ths) = notes kind [(a, [(ths, [])])] #>> the_single;
   183 
   184 fun target_morphism lthy =
   185   ProofContext.export_morphism lthy (target_of lthy) $>
   186   Morphism.thm_morphism Goal.norm_result;
   187 
   188 fun notation add mode raw_args lthy =
   189   let val args = map (apfst (Morphism.term (target_morphism lthy))) raw_args
   190   in term_syntax (ProofContext.target_notation add mode args) lthy end;
   191 
   192 
   193 (* init -- exit *)
   194 
   195 fun init theory_prefix operations target = target |> Data.map
   196   (fn NONE => SOME (make_lthy ("", theory_prefix, operations, target))
   197     | SOME _ => error "Local theory already initialized");
   198 
   199 fun restore lthy =
   200   let val {group = _, theory_prefix, operations, target} = get_lthy lthy
   201   in init theory_prefix operations target end;
   202 
   203 val reinit = operation #reinit;
   204 val exit = operation #exit;
   205 
   206 end;