author  wenzelm 
Tue, 27 Apr 2010 15:23:05 +0200  
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permissions  rwrr 
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(* Title: Pure/axclass.ML 
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Author: Markus Wenzel, TU Muenchen 
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24964  4 
Type classes defined as predicates, associated with a record of 
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parameters. Proven class relations and type arities. 
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*) 
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signature AX_CLASS = 
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sig 
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val define_class: binding * class list > string list > 
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(Thm.binding * term list) list > theory > class * theory 
24589  12 
val add_classrel: thm > theory > theory 
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val add_arity: thm > theory > theory 

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val prove_classrel: class * class > tactic > theory > theory 

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val prove_arity: string * sort list * sort > tactic > theory > theory 

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type info = {def: thm, intro: thm, axioms: thm list, params: (string * typ) list} 
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val get_info: theory > class > info 

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val class_of_param: theory > string > class option 
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val cert_classrel: theory > class * class > class * class 
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val read_classrel: theory > xstring * xstring > class * class 

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val axiomatize_class: binding * class list > theory > theory 
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val axiomatize_class_cmd: binding * xstring list > theory > theory 
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val axiomatize_classrel: (class * class) list > theory > theory 
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val axiomatize_classrel_cmd: (xstring * xstring) list > theory > theory 
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val axiomatize_arity: arity > theory > theory 
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val axiomatize_arity_cmd: xstring * string list * string > theory > theory 
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val instance_name: string * class > string 
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val declare_overloaded: string * typ > theory > term * theory 
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val define_overloaded: binding > string * term > theory > thm * theory 
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val unoverload: theory > thm > thm 
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val overload: theory > thm > thm 
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val unoverload_conv: theory > conv 
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val overload_conv: theory > conv 
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val unoverload_const: theory > string * typ > string 
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val lookup_inst_param: Consts.T > ((string * string) * 'a) list > string * typ > 'a option 
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val param_of_inst: theory > string * string > string 
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val inst_of_param: theory > string > (string * string) option 
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val thynames_of_arity: theory > class * string > string list 
3938  39 
end; 
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15801  41 
structure AxClass: AX_CLASS = 
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struct 
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(** theory data **) 
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(* axclass info *) 
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type info = 
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{def: thm, 
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intro: thm, 
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axioms: thm list, 
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params: (string * typ) list}; 
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fun make_axclass (def, intro, axioms, params): info = 
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{def = def, intro = intro, axioms = axioms, params = params}; 
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(* class parameters (canonical order) *) 
423  59 

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type param = string * class; 
423  61 

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fun add_param pp ((x, c): param) params = 
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(case AList.lookup (op =) params x of 

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NONE => (x, c) :: params 

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 SOME c' => error ("Duplicate class parameter " ^ quote x ^ 

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" for " ^ Pretty.string_of_sort pp [c] ^ 

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(if c = c' then "" else " and " ^ Pretty.string_of_sort pp [c']))); 

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19511  70 
(* setup data *) 
19392  71 

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datatype data = Data of 
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{axclasses: info Symtab.table, 
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params: param list, 
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proven_classrels: thm Symreltab.table, 
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proven_arities: ((class * sort list) * (thm * string)) list Symtab.table, 
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(*arity theorems with theory name*) 
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inst_params: 
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(string * thm) Symtab.table Symtab.table * 
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(*constant name ~> type constructor ~> (constant name, equation)*) 
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(string * string) Symtab.table (*constant name ~> (constant name, type constructor)*), 
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diff_classrels: (class * class) list}; 
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fun make_data 
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(axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) = 
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Data {axclasses = axclasses, params = params, proven_classrels = proven_classrels, 
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proven_arities = proven_arities, inst_params = inst_params, 
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diff_classrels = diff_classrels}; 
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fun diff_table tab1 tab2 = 
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Symreltab.fold (fn (x, _) => if Symreltab.defined tab2 x then I else cons x) tab1 []; 
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structure Data = Theory_Data_PP 
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( 
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type T = data; 
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val empty = 
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make_data (Symtab.empty, [], Symreltab.empty, Symtab.empty, (Symtab.empty, Symtab.empty), []); 
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val extend = I; 
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fun merge pp 
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(Data {axclasses = axclasses1, params = params1, proven_classrels = proven_classrels1, 
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proven_arities = proven_arities1, inst_params = inst_params1, 
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diff_classrels = diff_classrels1}, 
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Data {axclasses = axclasses2, params = params2, proven_classrels = proven_classrels2, 
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proven_arities = proven_arities2, inst_params = inst_params2, 
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diff_classrels = diff_classrels2}) = 
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let 
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val axclasses' = Symtab.merge (K true) (axclasses1, axclasses2); 
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val params' = 
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if null params1 then params2 
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else fold_rev (fn p => if member (op =) params1 p then I else add_param pp p) params2 params1; 
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(*transitive closure of classrels and arity completion is done in Theory.at_begin hook*) 
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val proven_classrels' = Symreltab.join (K #1) (proven_classrels1, proven_classrels2); 
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val proven_arities' = 
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Symtab.join (K (Library.merge (eq_fst op =))) (proven_arities1, proven_arities2); 
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val diff_classrels' = 
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diff_table proven_classrels1 proven_classrels2 @ 
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diff_table proven_classrels2 proven_classrels1 @ 
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diff_classrels1 @ diff_classrels2; 
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val inst_params' = 
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(Symtab.join (K (Symtab.merge (K true))) (#1 inst_params1, #1 inst_params2), 
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Symtab.merge (K true) (#2 inst_params1, #2 inst_params2)); 
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in 
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make_data 
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(axclasses', params', proven_classrels', proven_arities', inst_params', diff_classrels') 
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end; 
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); 
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fun map_data f = 
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Data.map (fn Data {axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels} => 
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make_data (f (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels))); 
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fun map_axclasses f = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) => 
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(f axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels)); 
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fun map_params f = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) => 
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(axclasses, f params, proven_classrels, proven_arities, inst_params, diff_classrels)); 
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fun map_proven_classrels f = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) => 
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(axclasses, params, f proven_classrels, proven_arities, inst_params, diff_classrels)); 
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fun map_proven_arities f = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) => 
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(axclasses, params, proven_classrels, f proven_arities, inst_params, diff_classrels)); 
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fun map_inst_params f = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, diff_classrels) => 
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(axclasses, params, proven_classrels, proven_arities, f inst_params, diff_classrels)); 
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val clear_diff_classrels = 
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map_data (fn (axclasses, params, proven_classrels, proven_arities, inst_params, _) => 
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(axclasses, params, proven_classrels, proven_arities, inst_params, [])); 
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158 

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val rep_data = Data.get #> (fn Data args => args); 
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val axclasses_of = #axclasses o rep_data; 
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val params_of = #params o rep_data; 
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val proven_classrels_of = #proven_classrels o rep_data; 
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val proven_arities_of = #proven_arities o rep_data; 
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val inst_params_of = #inst_params o rep_data; 
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val diff_classrels_of = #diff_classrels o rep_data; 
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167 

6379  168 

36346  169 
(* axclasses with parameters *) 
19392  170 

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fun get_info thy c = 
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(case Symtab.lookup (axclasses_of thy) c of 
36327  173 
SOME info => info 
21919  174 
 NONE => error ("No such axclass: " ^ quote c)); 
6379  175 

36327  176 
fun all_params_of thy S = 
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let val params = params_of thy; 
36327  178 
in fold (fn (x, c) => if Sign.subsort thy (S, [c]) then cons x else I) params [] end; 
19460  179 

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fun class_of_param thy = AList.lookup (op =) (params_of thy); 
19460  181 

21919  182 

19511  183 
(* maintain instances *) 
19503  184 

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val classrel_prefix = "classrel_"; 
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val arity_prefix = "arity_"; 
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fun instance_name (a, c) = Long_Name.base_name c ^ "_" ^ Long_Name.base_name a; 
19528  189 

190 

19574  191 
fun the_classrel thy (c1, c2) = 
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(case Symreltab.lookup (proven_classrels_of thy) (c1, c2) of 
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SOME thm => Thm.transfer thy thm 
24920  194 
 NONE => error ("Unproven class relation " ^ 
195 
Syntax.string_of_classrel (ProofContext.init thy) [c1, c2])); 

19574  196 

36325  197 
fun put_trancl_classrel ((c1, c2), th) thy = 
198 
let 

36327  199 
val cert = Thm.cterm_of thy; 
200 
val certT = Thm.ctyp_of thy; 

201 

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val classes = Sorts.classes_of (Sign.classes_of thy); 
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val classrels = proven_classrels_of thy; 
36325  204 

205 
fun reflcl_classrel (c1', c2') = 

36327  206 
if c1' = c2' 
207 
then Thm.trivial (cert (Logic.mk_of_class (TVar ((Name.aT, 0), []), c1'))) 

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else the_classrel thy (c1', c2'); 
36325  209 
fun gen_classrel (c1_pred, c2_succ) = 
210 
let 

211 
val th' = ((reflcl_classrel (c1_pred, c1) RS th) RS reflcl_classrel (c2, c2_succ)) 

36327  212 
> Drule.instantiate' [SOME (certT (TVar ((Name.aT, 0), [])))] [] 
213 
> Thm.close_derivation; 

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in ((c1_pred, c2_succ), th') end; 
36325  215 

36327  216 
val new_classrels = 
217 
Library.map_product pair (c1 :: Graph.imm_preds classes c1) (c2 :: Graph.imm_succs classes c2) 

36325  218 
> filter_out (Symreltab.defined classrels) 
36327  219 
> map gen_classrel; 
220 
val needed = not (null new_classrels); 

36325  221 
in 
222 
(needed, 

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if needed then map_proven_classrels (fold Symreltab.update new_classrels) thy 
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224 
else thy) 
36325  225 
end; 
226 

227 
fun complete_classrels thy = 

228 
let 

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val classrels = proven_classrels_of thy; 
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val diff_classrels = diff_classrels_of thy; 
36325  231 
val (needed, thy') = (false, thy) > 
36417  232 
fold (fn rel => fn (needed, thy) => 
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put_trancl_classrel (rel, Symreltab.lookup classrels rel > the) thy 
36325  234 
>> (fn b => needed orelse b)) 
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diff_classrels; 
36325  236 
in 
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if null diff_classrels then NONE 
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else SOME (clear_diff_classrels thy') 
36325  239 
end; 
19503  240 

241 

19574  242 
fun the_arity thy a (c, Ss) = 
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(case AList.lookup (op =) (Symtab.lookup_list (proven_arities_of thy) a) (c, Ss) of 
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SOME (thm, _) => Thm.transfer thy thm 
24920  245 
 NONE => error ("Unproven type arity " ^ 
246 
Syntax.string_of_arity (ProofContext.init thy) (a, Ss, [c]))); 

19503  247 

33172  248 
fun thynames_of_arity thy (c, a) = 
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Symtab.lookup_list (proven_arities_of thy) a 
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> map_filter (fn ((c', _), (_, name)) => if c = c' then SOME name else NONE) 
27497  251 
> rev; 
27397  252 

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fun insert_arity_completions thy t ((c, Ss), ((th, thy_name))) (finished, arities) = 
27547  254 
let 
255 
val algebra = Sign.classes_of thy; 

36417  256 
val ars = Symtab.lookup_list arities t; 
33172  257 
val super_class_completions = 
258 
Sign.super_classes thy c 

36417  259 
> filter_out (fn c1 => exists (fn ((c2, Ss2), _) => 
260 
c1 = c2 andalso Sorts.sorts_le algebra (Ss2, Ss)) ars); 

261 

262 
val names = Name.invents Name.context Name.aT (length Ss); 

263 
val std_vars = map (fn a => SOME (ctyp_of thy (TVar ((a, 0), [])))) names; 

264 

36325  265 
val completions = super_class_completions > map (fn c1 => 
266 
let 

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val th1 = 
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(th RS the_classrel thy (c, c1)) 
36417  269 
> Drule.instantiate' std_vars [] 
36327  270 
> Thm.close_derivation; 
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in ((th1, thy_name), c1) end); 
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272 

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val finished' = finished andalso null completions; 
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val arities' = fold (fn (th, c1) => Symtab.cons_list (t, ((c1, Ss), th))) completions arities; 
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in (finished', arities') end; 
19503  276 

27547  277 
fun put_arity ((t, Ss, c), th) thy = 
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let val ar = ((c, Ss), (th, Context.theory_name thy)) in 
27547  279 
thy 
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> map_proven_arities 
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(Symtab.insert_list (eq_fst op =) (t, ar) #> 
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282 
curry (insert_arity_completions thy t ar) true #> #2) 
27547  283 
end; 
19503  284 

31944  285 
fun complete_arities thy = 
27547  286 
let 
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val arities = proven_arities_of thy; 
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val (finished, arities') = 
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Symtab.fold (fn (t, ars) => fold (insert_arity_completions thy t) ars) arities (true, arities); 
33172  290 
in 
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291 
if finished then NONE 
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else SOME (map_proven_arities (K arities') thy) 
27547  293 
end; 
294 

36325  295 
val _ = Context.>> (Context.map_theory 
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(Theory.at_begin complete_classrels #> Theory.at_begin complete_arities)); 
27397  297 

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val the_classrel_prf = Thm.proof_of oo the_classrel; 
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val the_arity_prf = Thm.proof_of ooo the_arity; 
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300 

27397  301 

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(* maintain instance parameters *) 
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303 

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304 
fun get_inst_param thy (c, tyco) = 
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305 
(case Symtab.lookup (the_default Symtab.empty (Symtab.lookup (#1 (inst_params_of thy)) c)) tyco of 
36327  306 
SOME c' => c' 
307 
 NONE => error ("No instance parameter for constant " ^ quote c ^ " on type " ^ quote tyco)); 

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308 

36327  309 
fun add_inst_param (c, tyco) inst = 
310 
(map_inst_params o apfst o Symtab.map_default (c, Symtab.empty)) (Symtab.update_new (tyco, inst)) 

36417  311 
#> (map_inst_params o apsnd) (Symtab.update_new (#1 inst, (c, tyco))); 
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312 

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313 
val inst_of_param = Symtab.lookup o #2 o inst_params_of; 
36417  314 
val param_of_inst = #1 oo get_inst_param; 
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315 

36327  316 
fun inst_thms thy = 
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Symtab.fold (Symtab.fold (cons o #2 o #2) o #2) (#1 (inst_params_of thy)) []; 
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318 

36417  319 
fun get_inst_tyco consts = try (#1 o dest_Type o the_single o Consts.typargs consts); 
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320 

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321 
fun unoverload thy = MetaSimplifier.simplify true (inst_thms thy); 
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fun overload thy = MetaSimplifier.simplify true (map Thm.symmetric (inst_thms thy)); 
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323 

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324 
fun unoverload_conv thy = MetaSimplifier.rewrite true (inst_thms thy); 
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fun overload_conv thy = MetaSimplifier.rewrite true (map Thm.symmetric (inst_thms thy)); 
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326 

36327  327 
fun lookup_inst_param consts params (c, T) = 
328 
(case get_inst_tyco consts (c, T) of 

329 
SOME tyco => AList.lookup (op =) params (c, tyco) 

330 
 NONE => NONE); 

31249  331 

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332 
fun unoverload_const thy (c_ty as (c, _)) = 
36327  333 
if is_some (class_of_param thy c) then 
334 
(case get_inst_tyco (Sign.consts_of thy) c_ty of 

335 
SOME tyco => try (param_of_inst thy) (c, tyco) > the_default c 

336 
 NONE => c) 

33969  337 
else c; 
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338 

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339 

36327  340 

19511  341 
(** instances **) 
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342 

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343 
(* class relations *) 
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344 

19405  345 
fun cert_classrel thy raw_rel = 
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346 
let 
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347 
val string_of_sort = Syntax.string_of_sort_global thy; 
19405  348 
val (c1, c2) = pairself (Sign.certify_class thy) raw_rel; 
24271  349 
val _ = Sign.primitive_classrel (c1, c2) (Theory.copy thy); 
19405  350 
val _ = 
19460  351 
(case subtract (op =) (all_params_of thy [c1]) (all_params_of thy [c2]) of 
19405  352 
[] => () 
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353 
 xs => raise TYPE ("Class " ^ string_of_sort [c1] ^ " lacks parameter(s) " ^ 
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354 
commas_quote xs ^ " of " ^ string_of_sort [c2], [], [])); 
19405  355 
in (c1, c2) end; 
356 

357 
fun read_classrel thy raw_rel = 

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358 
cert_classrel thy (pairself (ProofContext.read_class (ProofContext.init thy)) raw_rel) 
19405  359 
handle TYPE (msg, _, _) => error msg; 
360 

361 

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362 
(* declaration and definition of instances of overloaded constants *) 
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363 

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364 
fun inst_tyco_of thy (c, T) = 
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365 
(case get_inst_tyco (Sign.consts_of thy) (c, T) of 
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366 
SOME tyco => tyco 
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367 
 NONE => error ("Illegal type for instantiation of class parameter: " ^ 
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368 
quote (c ^ " :: " ^ Syntax.string_of_typ_global thy T))); 
31249  369 

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370 
fun declare_overloaded (c, T) thy = 
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371 
let 
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372 
val class = 
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373 
(case class_of_param thy c of 
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374 
SOME class => class 
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375 
 NONE => error ("Not a class parameter: " ^ quote c)); 
31249  376 
val tyco = inst_tyco_of thy (c, T); 
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377 
val name_inst = instance_name (tyco, class) ^ "_inst"; 
36417  378 
val c' = instance_name (tyco, c); 
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379 
val T' = Type.strip_sorts T; 
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380 
in 
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381 
thy 
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382 
> Sign.qualified_path true (Binding.name name_inst) 
33173
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changeset

383 
> Sign.declare_const ((Binding.name c', T'), NoSyn) 
30344
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384 
> (fn const' as Const (c'', _) => 
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385 
Thm.add_def false true 
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386 
(Binding.name (Thm.def_name c'), Logic.mk_equals (Const (c, T'), const')) 
36106
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Thm.add_axiom/add_def: return internal name of foundational axiom;
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387 
#>> apsnd Thm.varifyT_global 
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388 
#> (fn (_, thm) => add_inst_param (c, tyco) (c'', thm) 
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Thm.add_axiom/add_def: return internal name of foundational axiom;
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389 
#> PureThy.add_thm ((Binding.conceal (Binding.name c'), thm), []) 
36417  390 
#> #2 
36106
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391 
#> pair (Const (c, T)))) 
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392 
> Sign.restore_naming thy 
25597
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393 
end; 
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394 

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395 
fun define_overloaded b (c, t) thy = 
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396 
let 
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397 
val T = Term.fastype_of t; 
31249  398 
val tyco = inst_tyco_of thy (c, T); 
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399 
val (c', eq) = get_inst_param thy (c, tyco); 
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400 
val prop = Logic.mk_equals (Const (c', T), t); 
36417  401 
val b' = Thm.def_binding_optional (Binding.name (instance_name (tyco, c))) b; 
25597
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402 
in 
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403 
thy 
30519
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404 
> Thm.add_def false false (b', prop) 
36106
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Thm.add_axiom/add_def: return internal name of foundational axiom;
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405 
>> (fn (_, thm) => Drule.transitive_thm OF [eq, thm]) 
25597
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406 
end; 
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changeset

407 

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408 

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409 
(* primitive rules *) 
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410 

36329
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411 
val shyps_topped = forall null o #shyps o Thm.rep_thm; 
85004134055c
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diff
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412 

31948
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add_classrel/arity: strip_shyps of stored result;
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413 
fun add_classrel raw_th thy = 
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414 
let 
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415 
val th = Thm.strip_shyps (Thm.transfer thy raw_th); 
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416 
val prop = Thm.plain_prop_of th; 
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417 
fun err () = raise THM ("add_classrel: malformed class relation", 0, [th]); 
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418 
val rel = Logic.dest_classrel prop handle TERM _ => err (); 
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419 
val (c1, c2) = cert_classrel thy rel handle TYPE _ => err (); 
36325  420 
val th' = th 
421 
> Drule.instantiate' [SOME (ctyp_of thy (TVar ((Name.aT, 0), [c1])))] [] 

36330
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diff
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422 
> Thm.unconstrain_allTs; 
36327  423 
val _ = shyps_topped th' orelse raise Fail "add_classrel: nontop shyps after unconstrain"; 
30951
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424 
in 
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425 
thy 
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426 
> Sign.primitive_classrel (c1, c2) 
36417  427 
> (#2 oo put_trancl_classrel) ((c1, c2), th') 
30951
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428 
> perhaps complete_arities 
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429 
end; 
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430 

31948
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431 
fun add_arity raw_th thy = 
30951
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432 
let 
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433 
val th = Thm.strip_shyps (Thm.transfer thy raw_th); 
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434 
val prop = Thm.plain_prop_of th; 
30951
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435 
fun err () = raise THM ("add_arity: malformed type arity", 0, [th]); 
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436 
val (t, Ss, c) = Logic.dest_arity prop handle TERM _ => err (); 
36417  437 

438 
val args = Name.names Name.context Name.aT Ss; 

439 
val T = Type (t, map TFree args); 

440 
val std_vars = map (fn (a, S) => SOME (ctyp_of thy (TVar ((a, 0), S)))) args; 

441 

30951
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442 
val missing_params = Sign.complete_sort thy [c] 
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443 
> maps (these o Option.map #params o try (get_info thy)) 
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444 
> filter_out (fn (const, _) => can (get_inst_param thy) (const, t)) 
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445 
> (map o apsnd o map_atyps) (K T); 
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446 
val _ = map (Sign.certify_sort thy) Ss = Ss orelse err (); 
36325  447 
val th' = th 
36417  448 
> Drule.instantiate' std_vars [] 
36330
0584e203960e
renamed Drule.unconstrainTs to Thm.unconstrain_allTs to accomdate the version by krauss/schropp;
wenzelm
parents:
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diff
changeset

449 
> Thm.unconstrain_allTs; 
36327  450 
val _ = shyps_topped th' orelse raise Fail "add_arity: nontop shyps after unconstrain"; 
30951
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451 
in 
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452 
thy 
36417  453 
> fold (#2 oo declare_overloaded) missing_params 
30951
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454 
> Sign.primitive_arity (t, Ss, [c]) 
36325  455 
> put_arity ((t, Ss, c), th') 
30951
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456 
end; 
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haftmann
parents:
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diff
changeset

457 

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changeset

458 

a6e26a248f03
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459 
(* tactical proofs *) 
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haftmann
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changeset

460 

a6e26a248f03
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461 
fun prove_classrel raw_rel tac thy = 
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462 
let 
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463 
val ctxt = ProofContext.init thy; 
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464 
val (c1, c2) = cert_classrel thy raw_rel; 
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465 
val th = Goal.prove ctxt [] [] (Logic.mk_classrel (c1, c2)) (K tac) handle ERROR msg => 
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diff
changeset

466 
cat_error msg ("The error(s) above occurred while trying to prove class relation " ^ 
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diff
changeset

467 
quote (Syntax.string_of_classrel ctxt [c1, c2])); 
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diff
changeset

468 
in 
a6e26a248f03
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haftmann
parents:
30519
diff
changeset

469 
thy 
a6e26a248f03
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parents:
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diff
changeset

470 
> PureThy.add_thms [((Binding.name 
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haftmann
parents:
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diff
changeset

471 
(prefix classrel_prefix (Logic.name_classrel (c1, c2))), th), [])] 
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formal declaration of undefined parameters after class instantiation
haftmann
parents:
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diff
changeset

472 
> (fn [th'] => add_classrel th') 
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haftmann
parents:
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diff
changeset

473 
end; 
a6e26a248f03
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haftmann
parents:
30519
diff
changeset

474 

a6e26a248f03
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haftmann
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diff
changeset

475 
fun prove_arity raw_arity tac thy = 
a6e26a248f03
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haftmann
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diff
changeset

476 
let 
a6e26a248f03
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haftmann
parents:
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diff
changeset

477 
val ctxt = ProofContext.init thy; 
35669
a91c7ed801b8
added ProofContext.tsig_of  proforma version for local name space only, not logical content;
wenzelm
parents:
35238
diff
changeset

478 
val arity = ProofContext.cert_arity ctxt raw_arity; 
30951
a6e26a248f03
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haftmann
parents:
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diff
changeset

479 
val names = map (prefix arity_prefix) (Logic.name_arities arity); 
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haftmann
parents:
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diff
changeset

480 
val props = Logic.mk_arities arity; 
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haftmann
parents:
30519
diff
changeset

481 
val ths = Goal.prove_multi ctxt [] [] props 
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haftmann
parents:
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diff
changeset

482 
(fn _ => Goal.precise_conjunction_tac (length props) 1 THEN tac) handle ERROR msg => 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
30519
diff
changeset

483 
cat_error msg ("The error(s) above occurred while trying to prove type arity " ^ 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
30519
diff
changeset

484 
quote (Syntax.string_of_arity ctxt arity)); 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
30519
diff
changeset

485 
in 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
30519
diff
changeset

486 
thy 
a6e26a248f03
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haftmann
parents:
30519
diff
changeset

487 
> PureThy.add_thms (map (rpair []) (map Binding.name names ~~ ths)) 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
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diff
changeset

488 
> fold add_arity 
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haftmann
parents:
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diff
changeset

489 
end; 
a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
30519
diff
changeset

490 

a6e26a248f03
formal declaration of undefined parameters after class instantiation
haftmann
parents:
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diff
changeset

491 

19511  492 

493 
(** class definitions **) 

494 

23421  495 
fun split_defined n eq = 
496 
let 

497 
val intro = 

498 
(eq RS Drule.equal_elim_rule2) 

499 
> Conjunction.curry_balanced n 

500 
> n = 0 ? Thm.eq_assumption 1; 

501 
val dests = 

502 
if n = 0 then [] 

503 
else 

504 
(eq RS Drule.equal_elim_rule1) 

32765  505 
> Balanced_Tree.dest (fn th => 
23421  506 
(th RS Conjunction.conjunctionD1, th RS Conjunction.conjunctionD2)) n; 
507 
in (intro, dests) end; 

508 

24964  509 
fun define_class (bclass, raw_super) raw_params raw_specs thy = 
19511  510 
let 
511 
val ctxt = ProofContext.init thy; 

24964  512 
val pp = Syntax.pp ctxt; 
19511  513 

514 

24964  515 
(* class *) 
19511  516 

30344
10a67c5ddddb
more uniform handling of binding in targets and derived elements;
wenzelm
parents:
30280
diff
changeset

517 
val bconst = Binding.map_name Logic.const_of_class bclass; 
10a67c5ddddb
more uniform handling of binding in targets and derived elements;
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parents:
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diff
changeset

518 
val class = Sign.full_name thy bclass; 
24731  519 
val super = Sign.minimize_sort thy (Sign.certify_sort thy raw_super); 
19511  520 

24964  521 
fun check_constraint (a, S) = 
522 
if Sign.subsort thy (super, S) then () 

523 
else error ("Sort constraint of type variable " ^ 

32966
5b21661fe618
indicate CRITICAL nature of various setmp combinators;
wenzelm
parents:
32791
diff
changeset

524 
setmp_CRITICAL show_sorts true (Pretty.string_of_typ pp) (TFree (a, S)) ^ 
24964  525 
" needs to be weaker than " ^ Pretty.string_of_sort pp super); 
526 

527 

528 
(* params *) 

529 

530 
val params = raw_params > map (fn p => 

531 
let 

532 
val T = Sign.the_const_type thy p; 

533 
val _ = 

534 
(case Term.add_tvarsT T [] of 

535 
[((a, _), S)] => check_constraint (a, S) 

536 
 _ => error ("Exactly one type variable expected in class parameter " ^ quote p)); 

537 
val T' = Term.map_type_tvar (fn _ => TFree (Name.aT, [class])) T; 

538 
in (p, T') end); 

539 

540 

541 
(* axioms *) 

542 

19511  543 
fun prep_axiom t = 
544 
(case Term.add_tfrees t [] of 

24964  545 
[(a, S)] => check_constraint (a, S) 
546 
 [] => () 

547 
 _ => error ("Multiple type variables in class axiom:\n" ^ Pretty.string_of_term pp t); 

548 
t 

549 
> Term.map_types (Term.map_atyps (fn TFree _ => Term.aT []  U => U)) 

550 
> Logic.close_form); 

19511  551 

24681  552 
val axiomss = map (map (prep_axiom o Sign.cert_prop thy) o snd) raw_specs; 
22745  553 
val name_atts = map fst raw_specs; 
19511  554 

555 

556 
(* definition *) 

557 

35854  558 
val conjs = Logic.mk_of_sort (Term.aT [], super) @ flat axiomss; 
19511  559 
val class_eq = 
31943
5e960a0780a2
renamed inclass/Inclass to of_class/OfClass, in accordance to of_sort;
wenzelm
parents:
31904
diff
changeset

560 
Logic.mk_equals (Logic.mk_of_class (Term.aT [], class), Logic.mk_conjunction_balanced conjs); 
19511  561 

562 
val ([def], def_thy) = 

563 
thy 

564 
> Sign.primitive_class (bclass, super) 

35238  565 
> PureThy.add_defs false [((Thm.def_binding bconst, class_eq), [])]; 
19511  566 
val (raw_intro, (raw_classrel, raw_axioms)) = 
23421  567 
split_defined (length conjs) def > chop (length super); 
19392  568 

19418
03b01c9314fc
reworded add_axclass(_i): canonical specification format,
wenzelm
parents:
19405
diff
changeset

569 

19511  570 
(* facts *) 
571 

572 
val class_triv = Thm.class_triv def_thy class; 

573 
val ([(_, [intro]), (_, classrel), (_, axioms)], facts_thy) = 

574 
def_thy 

35201
c2ddb9395436
axclass: more precise treatment of naming vs. binding;
wenzelm
parents:
35021
diff
changeset

575 
> Sign.qualified_path true bconst 
27691
ce171cbd4b93
PureThy: dropped note_thmss_qualified, dropped _i suffix
haftmann
parents:
27683
diff
changeset

576 
> PureThy.note_thmss "" 
36326  577 
[((Binding.name "intro", []), [([Drule.export_without_context raw_intro], [])]), 
578 
((Binding.name "super", []), [(map Drule.export_without_context raw_classrel, [])]), 

579 
((Binding.name "axioms", []), 

35021
c839a4c670c6
renamed oldstyle Drule.standard to Drule.export_without_context, to emphasize that this is in no way a standard operation;
wenzelm
parents:
34259
diff
changeset

580 
[(map (fn th => Drule.export_without_context (class_triv RS th)) raw_axioms, [])])] 
27691
ce171cbd4b93
PureThy: dropped note_thmss_qualified, dropped _i suffix
haftmann
parents:
27683
diff
changeset

581 
> Sign.restore_naming def_thy; 
19511  582 

24847  583 

19511  584 
(* result *) 
585 

36329
85004134055c
more systematic treatment of data  avoid slightly odd nested tuples here;
wenzelm
parents:
36328
diff
changeset

586 
val axclass = make_axclass (def, intro, axioms, params); 
19511  587 
val result_thy = 
588 
facts_thy 

36417  589 
> fold (#2 oo put_trancl_classrel) (map (pair class) super ~~ classrel) 
35201
c2ddb9395436
axclass: more precise treatment of naming vs. binding;
wenzelm
parents:
35021
diff
changeset

590 
> Sign.qualified_path false bconst 
36417  591 
> PureThy.note_thmss "" (name_atts ~~ map Thm.simple_fact (unflat axiomss axioms)) > #2 
19511  592 
> Sign.restore_naming facts_thy 
36329
85004134055c
more systematic treatment of data  avoid slightly odd nested tuples here;
wenzelm
parents:
36328
diff
changeset

593 
> map_axclasses (Symtab.update (class, axclass)) 
85004134055c
more systematic treatment of data  avoid slightly odd nested tuples here;
wenzelm
parents:
36328
diff
changeset

594 
> map_params (fold (fn (x, _) => add_param pp (x, class)) params); 
19511  595 

596 
in (class, result_thy) end; 

597 

598 

19531  599 

19511  600 
(** axiomatizations **) 
601 

602 
local 

603 

36417  604 
(*oldstyle axioms*) 
35896
487b267433b1
inlined version of oldstyle Drule.add_axioms  Specification.axiom is not bootstrapped yet;
wenzelm
parents:
35856
diff
changeset

605 
fun add_axiom (b, prop) = 
487b267433b1
inlined version of oldstyle Drule.add_axioms  Specification.axiom is not bootstrapped yet;
wenzelm
parents:
35856
diff
changeset

606 
Thm.add_axiom (b, prop) #> 
36106
19deea200358
Thm.add_axiom/add_def: return internal name of foundational axiom;
wenzelm
parents:
35961
diff
changeset

607 
(fn (_, thm) => PureThy.add_thm ((b, Drule.export_without_context thm), [])); 
35896
487b267433b1
inlined version of oldstyle Drule.add_axioms  Specification.axiom is not bootstrapped yet;
wenzelm
parents:
35856
diff
changeset

608 

20628  609 
fun axiomatize prep mk name add raw_args thy = 
610 
let 

611 
val args = prep thy raw_args; 

612 
val specs = mk args; 

613 
val names = name args; 

29579  614 
in 
615 
thy 

35896
487b267433b1
inlined version of oldstyle Drule.add_axioms  Specification.axiom is not bootstrapped yet;
wenzelm
parents:
35856
diff
changeset

616 
> fold_map add_axiom (map Binding.name names ~~ specs) 
29579  617 
> fold add 
618 
end; 

19511  619 

620 
fun ax_classrel prep = 

20628  621 
axiomatize (map o prep) (map Logic.mk_classrel) 
622 
(map (prefix classrel_prefix o Logic.name_classrel)) add_classrel; 

19511  623 

624 
fun ax_arity prep = 

35669
a91c7ed801b8
added ProofContext.tsig_of  proforma version for local name space only, not logical content;
wenzelm
parents:
35238
diff
changeset

625 
axiomatize (prep o ProofContext.init) Logic.mk_arities 
20628  626 
(map (prefix arity_prefix) o Logic.name_arities) add_arity; 
19511  627 

19706  628 
fun class_const c = 
629 
(Logic.const_of_class c, Term.itselfT (Term.aT []) > propT); 

630 

19511  631 
fun ax_class prep_class prep_classrel (bclass, raw_super) thy = 
632 
let 

30344
10a67c5ddddb
more uniform handling of binding in targets and derived elements;
wenzelm
parents:
30280
diff
changeset

633 
val class = Sign.full_name thy bclass; 
24731  634 
val super = map (prep_class thy) raw_super > Sign.minimize_sort thy; 
19511  635 
in 
636 
thy 

637 
> Sign.primitive_class (bclass, super) 

638 
> ax_classrel prep_classrel (map (fn c => (class, c)) super) 

19706  639 
> Theory.add_deps "" (class_const class) (map class_const super) 
19511  640 
end; 
641 

642 
in 

643 

24929
408becab067e
renamed AxClass.get_definition to AxClass.get_info (again);
wenzelm
parents:
24920
diff
changeset

644 
val axiomatize_class = ax_class Sign.certify_class cert_classrel; 
35669
a91c7ed801b8
added ProofContext.tsig_of  proforma version for local name space only, not logical content;
wenzelm
parents:
35238
diff
changeset

645 
val axiomatize_class_cmd = ax_class (ProofContext.read_class o ProofContext.init) read_classrel; 
24929
408becab067e
renamed AxClass.get_definition to AxClass.get_info (again);
wenzelm
parents:
24920
diff
changeset

646 
val axiomatize_classrel = ax_classrel cert_classrel; 
408becab067e
renamed AxClass.get_definition to AxClass.get_info (again);
wenzelm
parents:
24920
diff
changeset

647 
val axiomatize_classrel_cmd = ax_classrel read_classrel; 
35669
a91c7ed801b8
added ProofContext.tsig_of  proforma version for local name space only, not logical content;
wenzelm
parents:
35238
diff
changeset

648 
val axiomatize_arity = ax_arity ProofContext.cert_arity; 
a91c7ed801b8
added ProofContext.tsig_of  proforma version for local name space only, not logical content;
wenzelm
parents:
35238
diff
changeset

649 
val axiomatize_arity_cmd = ax_arity ProofContext.read_arity; 
19511  650 

651 
end; 

652 

653 
end; 