author  haftmann 
Mon, 08 Oct 2007 22:03:21 +0200  
changeset 24914  95cda5dd58d5 
parent 24901  d3cbf79769b9 
child 24920  2a45e400fdad 
permissions  rwrr 
24218  1 
(* Title: Pure/Isar/class.ML 
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ID: $Id$ 

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Author: Florian Haftmann, TU Muenchen 

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Type classes derived from primitive axclasses and locales. 

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*) 

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signature CLASS = 

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sig 

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val fork_mixfix: bool > string option > mixfix > mixfix * mixfix 

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val axclass_cmd: bstring * xstring list 

24589  13 
> ((bstring * Attrib.src list) * string list) list 
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> theory > class * theory 

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val classrel_cmd: xstring * xstring > theory > Proof.state 

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24748  17 
val class: bool > bstring > class list > Element.context_i Locale.element list 
24218  18 
> string list > theory > string * Proof.context 
24748  19 
val class_cmd: bool > bstring > xstring list > Element.context Locale.element list 
24589  20 
> xstring list > theory > string * Proof.context 
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val init: class > Proof.context > Proof.context; 
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val add_const_in_class: string > (string * term) * Syntax.mixfix 
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> theory > string * theory 
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val add_abbrev_in_class: string > Syntax.mode > (string * term) * mixfix 
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> theory > string * theory 
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val remove_constraint: sort > string > Proof.context > Proof.context 
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val intro_classes_tac: thm list > tactic 
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val default_intro_classes_tac: thm list > tactic 

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val class_of_locale: theory > string > class option 

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val locale_of_class: theory > class > string 
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val local_syntax: theory > class > bool 
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val print_classes: theory > unit 
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24589  34 
val instance_arity: (theory > theory) > arity list > theory > Proof.state 
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val instance: arity list > ((bstring * Attrib.src list) * term) list 

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> (thm list > theory > theory) 
24218  37 
> theory > Proof.state 
24589  38 
val instance_cmd: (bstring * xstring list * xstring) list 
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> ((bstring * Attrib.src list) * xstring) list 

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> (thm list > theory > theory) 
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> theory > Proof.state 
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val prove_instance: tactic > arity list 
24218  43 
> ((bstring * Attrib.src list) * term) list 
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> theory > thm list * theory 
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val unoverload: theory > conv 
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val overload: theory > conv 
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val unoverload_const: theory > string * typ > string 
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val inst_const: theory > string * string > string 
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val param_const: theory > string > (string * string) option 
24435  50 
val params_of_sort: theory > sort > (string * (string * typ)) list 
24218  51 
end; 
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structure Class : CLASS = 

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struct 

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(** auxiliary **) 

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fun fork_mixfix is_loc some_class mx = 

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let 

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val mx' = Syntax.unlocalize_mixfix mx; 

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val mx_global = if not is_loc orelse (is_some some_class andalso not (mx = mx')) 
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then mx' else NoSyn; 
24218  63 
val mx_local = if is_loc then mx else NoSyn; 
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in (mx_global, mx_local) end; 

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24589  66 
fun prove_interpretation tac prfx_atts expr insts = 
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Locale.interpretation_i I prfx_atts expr insts 

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#> Proof.global_terminal_proof 

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(Method.Basic (K (Method.SIMPLE_METHOD tac), Position.none), NONE) 

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#> ProofContext.theory_of; 

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fun OF_LAST thm1 thm2 = 

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let 

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val n = (length o Logic.strip_imp_prems o prop_of) thm2; 

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in (thm1 RSN (n, thm2)) end; 

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fun strip_all_ofclass thy sort = 

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let 

24847  79 
val typ = TVar ((Name.aT, 0), sort); 
24589  80 
fun prem_inclass t = 
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case Logic.strip_imp_prems t 

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of ofcls :: _ => try Logic.dest_inclass ofcls 

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 [] => NONE; 

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fun strip_ofclass class thm = 

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thm OF (fst o AxClass.of_sort thy (typ, [class])) AxClass.cache; 

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fun strip thm = case (prem_inclass o Thm.prop_of) thm 

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of SOME (_, class) => thm > strip_ofclass class > strip 

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 NONE => thm; 

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in strip end; 

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(** axclass command **) 

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24218  94 
fun axclass_cmd (class, raw_superclasses) raw_specs thy = 
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let 

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val ctxt = ProofContext.init thy; 

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val superclasses = map (Sign.read_class thy) raw_superclasses; 

24589  98 
val name_atts = map ((apsnd o map) (Attrib.attribute thy) o fst) 
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raw_specs; 

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val axiomss = ProofContext.read_propp (ctxt, map (map (rpair []) o snd) 

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raw_specs) 

24218  102 
> snd 
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> (map o map) fst; 

24589  104 
in 
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AxClass.define_class (class, superclasses) [] 

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(name_atts ~~ axiomss) thy 

107 
end; 

24218  108 

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local 

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fun gen_instance mk_prop add_thm after_qed insts thy = 

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let 

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fun after_qed' results = 

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ProofContext.theory ((fold o fold) add_thm results #> after_qed); 

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in 

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thy 

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> ProofContext.init 

24589  118 
> Proof.theorem_i NONE after_qed' ((map (fn t => [(t, [])]) 
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o maps (mk_prop thy)) insts) 

24218  120 
end; 
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in 

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24589  124 
val instance_arity = 
24218  125 
gen_instance (Logic.mk_arities oo Sign.cert_arity) AxClass.add_arity; 
24589  126 
val classrel = 
24218  127 
gen_instance (single oo (Logic.mk_classrel oo AxClass.cert_classrel)) 
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AxClass.add_classrel I o single; 

24589  129 
val classrel_cmd = 
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gen_instance (single oo (Logic.mk_classrel oo AxClass.read_classrel)) 

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AxClass.add_classrel I o single; 

24218  132 

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end; (*local*) 

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24589  136 
(** explicit constants for overloaded definitions **) 
24304  137 

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structure InstData = TheoryDataFun 

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( 

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type T = (string * thm) Symtab.table Symtab.table * (string * string) Symtab.table; 
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(*constant name ~> type constructor ~> (constant name, equation), 
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constant name ~> (constant name, type constructor)*) 
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val empty = (Symtab.empty, Symtab.empty); 
24304  144 
val copy = I; 
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val extend = I; 

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fun merge _ ((taba1, tabb1), (taba2, tabb2)) = 
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(Symtab.join (K (Symtab.merge (K true))) (taba1, taba2), 
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Symtab.merge (K true) (tabb1, tabb2)); 
24304  149 
); 
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24589  151 
fun inst_thms f thy = (Symtab.fold (Symtab.fold (cons o f o snd o snd) o snd) o fst) 
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(InstData.get thy) []; 

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fun add_inst (c, tyco) inst = (InstData.map o apfst 

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o Symtab.map_default (c, Symtab.empty)) (Symtab.update_new (tyco, inst)) 

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#> (InstData.map o apsnd) (Symtab.update_new (fst inst, (c, tyco))); 
24304  156 

24589  157 
fun unoverload thy = MetaSimplifier.rewrite false (inst_thms I thy); 
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fun overload thy = MetaSimplifier.rewrite false (inst_thms symmetric thy); 

24304  159 

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fun inst_const thy (c, tyco) = 

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(fst o the o Symtab.lookup ((the o Symtab.lookup (fst (InstData.get thy))) c)) tyco; 
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fun unoverload_const thy (c_ty as (c, _)) = 
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case AxClass.class_of_param thy c 
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of SOME class => (case Sign.const_typargs thy c_ty 
24589  165 
of [Type (tyco, _)] => (case Symtab.lookup 
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((the o Symtab.lookup (fst (InstData.get thy))) c) tyco 

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of SOME (c, _) => c 
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 NONE => c) 
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 [_] => c) 
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 NONE => c; 
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val param_const = Symtab.lookup o snd o InstData.get; 
24304  173 

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fun add_inst_def (class, tyco) (c, ty) thy = 

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let 

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val tyco_base = NameSpace.base tyco; 

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val name_inst = NameSpace.base class ^ "_" ^ tyco_base ^ "_inst"; 

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val c_inst_base = NameSpace.base c ^ "_" ^ tyco_base; 

179 
in 

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thy 

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> Sign.sticky_prefix name_inst 

24435  182 
> PureThy.simple_def ("", []) 
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(((c_inst_base, ty, Syntax.NoSyn), []), Const (c, ty)) 

184 
> (fn (c_inst, thm) => add_inst (c, tyco) (c_inst, symmetric thm)) 

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> Sign.restore_naming thy 

24304  186 
end; 
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fun add_inst_def' (class, tyco) (c, ty) thy = 

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if case Symtab.lookup (fst (InstData.get thy)) c 
24304  190 
of NONE => true 
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 SOME tab => is_none (Symtab.lookup tab tyco) 

192 
then add_inst_def (class, tyco) (c, Logic.unvarifyT ty) thy 

193 
else thy; 

194 

195 
fun add_def ((class, tyco), ((name, prop), atts)) thy = 

196 
let 

24589  197 
val ((lhs as Const (c, ty), args), rhs) = 
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(apfst Term.strip_comb o Logic.dest_equals) prop; 

24701  199 
fun (*add_inst' def ([], (Const (c_inst, ty))) = 
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if forall (fn TFree _ => true  _ => false) (Sign.const_typargs thy (c_inst, ty)) 
24304  201 
then add_inst (c, tyco) (c_inst, def) 
202 
else add_inst_def (class, tyco) (c, ty) 

24701  203 
*) add_inst' _ t = add_inst_def (class, tyco) (c, ty); 
24304  204 
in 
205 
thy 

206 
> PureThy.add_defs_i true [((name, prop), map (Attrib.attribute thy) atts)] 

207 
> (fn [def] => add_inst' def (args, rhs) #> pair def) 

208 
end; 

209 

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24589  211 
(** instances with implicit parameter handling **) 
24218  212 

213 
local 

214 

24707  215 
fun gen_read_def thy prep_att parse_prop ((raw_name, raw_atts), raw_t) = 
24218  216 
let 
24707  217 
val ctxt = ProofContext.init thy; 
218 
val t = parse_prop ctxt raw_t > Syntax.check_prop ctxt; 

24218  219 
val ((c, ty), _) = Sign.cert_def (Sign.pp thy) t; 
220 
val atts = map (prep_att thy) raw_atts; 

221 
val insts = Consts.typargs (Sign.consts_of thy) (c, ty); 

222 
val name = case raw_name 

223 
of "" => NONE 

224 
 _ => SOME raw_name; 

225 
in (c, (insts, ((name, t), atts))) end; 

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24707  227 
fun read_def_cmd thy = gen_read_def thy Attrib.intern_src Syntax.parse_prop; 
24218  228 
fun read_def thy = gen_read_def thy (K I) (K I); 
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24589  230 
fun gen_instance prep_arity read_def do_proof raw_arities raw_defs after_qed theory = 
24218  231 
let 
232 
val arities = map (prep_arity theory) raw_arities; 

233 
val _ = if null arities then error "at least one arity must be given" else (); 

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val _ = case (duplicates (op =) o map #1) arities 

235 
of [] => () 

236 
 dupl_tycos => error ("type constructors occur more than once in arities: " 

237 
^ (commas o map quote) dupl_tycos); 

24836  238 
fun get_remove_constraint c thy = 
239 
let 

240 
val ty = Sign.the_const_constraint thy c; 

241 
in 

242 
thy 

243 
> Sign.add_const_constraint (c, NONE) 

244 
> pair (c, Logic.unvarifyT ty) 

245 
end; 

24218  246 
fun get_consts_class tyco ty class = 
247 
let 

248 
val cs = (these o Option.map snd o try (AxClass.params_of_class theory)) class; 

249 
val subst_ty = map_type_tfree (K ty); 

250 
in 

24304  251 
map (fn (c, ty) => (c, ((class, tyco), subst_ty ty))) cs 
24218  252 
end; 
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fun get_consts_sort (tyco, asorts, sort) = 

254 
let 

24589  255 
val ty = Type (tyco, map (fn (v, sort) => TVar ((v, 0), sort)) 
24847  256 
(Name.names Name.context Name.aT asorts)) 
24731  257 
in maps (get_consts_class tyco ty) (Sign.complete_sort theory sort) end; 
24218  258 
val cs = maps get_consts_sort arities; 
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fun mk_typnorm thy (ty, ty_sc) = 

260 
case try (Sign.typ_match thy (Logic.varifyT ty_sc, ty)) Vartab.empty 

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of SOME env => SOME (Logic.varifyT #> Envir.typ_subst_TVars env #> Logic.unvarifyT) 

262 
 NONE => NONE; 

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fun read_defs defs cs thy_read = 

264 
let 

265 
fun read raw_def cs = 

266 
let 

267 
val (c, (inst, ((name_opt, t), atts))) = read_def thy_read raw_def; 

268 
val ty = Consts.instance (Sign.consts_of thy_read) (c, inst); 

24304  269 
val ((class, tyco), ty') = case AList.lookup (op =) cs c 
24218  270 
of NONE => error ("illegal definition for constant " ^ quote c) 
271 
 SOME class_ty => class_ty; 

272 
val name = case name_opt 

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of NONE => Thm.def_name (Logic.name_arity (tyco, [], c)) 

274 
 SOME name => name; 

275 
val t' = case mk_typnorm thy_read (ty', ty) 

276 
of NONE => error ("illegal definition for constant " ^ 

277 
quote (c ^ "::" ^ setmp show_sorts true 

278 
(Sign.string_of_typ thy_read) ty)) 

279 
 SOME norm => map_types norm t 

280 
in (((class, tyco), ((name, t'), atts)), AList.delete (op =) c cs) end; 

281 
in fold_map read defs cs end; 

24304  282 
val (defs, other_cs) = read_defs raw_defs cs 
24218  283 
(fold Sign.primitive_arity arities (Theory.copy theory)); 
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fun after_qed' cs defs = 
24766  285 
fold Sign.add_const_constraint (map (apsnd SOME) cs) 
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#> after_qed defs; 
24218  287 
in 
288 
theory 

24748  289 
> fold_map get_remove_constraint (map fst cs > distinct (op =)) 
24304  290 
>> fold_map add_def defs 
291 
> fold (fn (c, ((class, tyco), ty)) => add_inst_def' (class, tyco) (c, ty)) other_cs 

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> (fn (cs, defs) => do_proof (after_qed' cs defs) arities defs) 
24218  293 
end; 
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fun tactic_proof tac f arities defs = 
24218  296 
fold (fn arity => AxClass.prove_arity arity tac) arities 
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#> f 
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#> pair defs; 
24218  299 

300 
in 

301 

24589  302 
val instance = gen_instance Sign.cert_arity read_def 
303 
(fn f => fn arities => fn defs => instance_arity f arities); 

304 
val instance_cmd = gen_instance Sign.read_arity read_def_cmd 

305 
(fn f => fn arities => fn defs => instance_arity f arities); 

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fun prove_instance tac arities defs = 

307 
gen_instance Sign.cert_arity read_def 

308 
(tactic_proof tac) arities defs (K I); 

24218  309 

310 
end; (*local*) 

311 

312 

313 

24589  314 
(** class data **) 
24218  315 

316 
datatype class_data = ClassData of { 

317 
locale: string, 

318 
consts: (string * string) list 

24836  319 
(*locale parameter ~> constant name*), 
24748  320 
local_sort: sort, 
24589  321 
inst: typ Symtab.table * term Symtab.table 
322 
(*canonical interpretation*), 

24657  323 
intro: thm, 
24748  324 
local_syntax: bool, 
24657  325 
defs: thm list, 
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operations: (string * (term * int) option) list, 
24836  327 
(*constant name ~> (locale term, instantiaton index of class typ)*) 
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constraints: (string * typ) list 
24657  329 
}; 
24218  330 

24657  331 
fun rep_class_data (ClassData d) = d; 
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fun mk_class_data ((locale, consts, local_sort, inst, intro, local_syntax), 
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(defs, (operations, constraints))) = 
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ClassData { locale = locale, consts = consts, local_sort = local_sort, inst = inst, 
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intro = intro, local_syntax = local_syntax, defs = defs, operations = operations, 
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constraints = constraints }; 
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fun map_class_data f (ClassData { locale, consts, local_sort, inst, intro, 
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local_syntax, defs, operations, constraints }) = 
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mk_class_data (f ((locale, consts, local_sort, inst, intro, local_syntax), 
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(defs, (operations, constraints)))); 
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fun merge_class_data _ (ClassData { locale = locale, consts = consts, 
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local_sort = local_sort, inst = inst, intro = intro, local_syntax = local_syntax, 
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343 
defs = defs1, operations = operations1, constraints = constraints1 }, 
24748  344 
ClassData { locale = _, consts = _, local_sort = _, inst = _, intro = _, local_syntax = _, 
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345 
defs = defs2, operations = operations2, constraints = constraints2 }) = 
24748  346 
mk_class_data ((locale, consts, local_sort, inst, intro, local_syntax), 
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347 
(Thm.merge_thms (defs1, defs2), 
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348 
(AList.merge (op =) (K true) (operations1, operations2), 
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349 
AList.merge (op =) (K true) (constraints1, constraints2)))); 
24218  350 

351 
fun merge_pair f1 f2 ((x1, y1), (x2, y2)) = (f1 (x1, x2), f2 (y1, y2)); 

352 

353 
structure ClassData = TheoryDataFun 

354 
( 

24657  355 
type T = class_data Graph.T * class Symtab.table 
356 
(*locale name ~> class name*); 

24218  357 
val empty = (Graph.empty, Symtab.empty); 
358 
val copy = I; 

359 
val extend = I; 

24657  360 
fun merge _ = merge_pair (Graph.join merge_class_data) (Symtab.merge (K true)); 
24218  361 
); 
362 

363 

364 
(* queries *) 

365 

24657  366 
val lookup_class_data = Option.map rep_class_data oo try o Graph.get_node 
24589  367 
o fst o ClassData.get; 
24218  368 
fun class_of_locale thy = Symtab.lookup ((snd o ClassData.get) thy); 
369 

24589  370 
fun the_class_data thy class = case lookup_class_data thy class 
371 
of NONE => error ("undeclared class " ^ quote class) 

372 
 SOME data => data; 

24218  373 

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374 
val locale_of_class = #locale oo the_class_data; 
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375 

24218  376 
val ancestry = Graph.all_succs o fst o ClassData.get; 
377 

24435  378 
fun params_of_sort thy = 
24218  379 
let 
380 
fun params class = 

381 
let 

382 
val const_typs = (#params o AxClass.get_definition thy) class; 

24657  383 
val const_names = (#consts o the_class_data thy) class; 
24218  384 
in 
385 
(map o apsnd) (fn c => (c, (the o AList.lookup (op =) const_typs) c)) const_names 

386 
end; 

387 
in maps params o ancestry thy end; 

388 

24657  389 
fun these_defs thy = maps (these o Option.map #defs o lookup_class_data thy) o ancestry thy; 
24218  390 

391 
fun these_intros thy = 

24657  392 
Graph.fold (fn (_, (data, _)) => insert Thm.eq_thm ((#intro o rep_class_data) data)) 
24218  393 
((fst o ClassData.get) thy) []; 
394 

24836  395 
fun these_operations thy = 
396 
maps (#operations o the_class_data thy) o ancestry thy; 

24657  397 

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398 
fun these_constraints thy = 
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399 
maps (#constraints o the_class_data thy) o ancestry thy; 
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400 

24836  401 
fun local_operation thy = Option.join oo AList.lookup (op =) o these_operations thy; 
24657  402 

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403 
fun sups_local_sort thy sort = 
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404 
let 
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405 
val sups = filter (is_some o lookup_class_data thy) sort 
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406 
> Sign.minimize_sort thy; 
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407 
val local_sort = case sups 
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408 
of sup :: _ => #local_sort (the_class_data thy sup) 
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409 
 [] => sort; 
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410 
in (sups, local_sort) end; 
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411 

24836  412 
fun local_syntax thy = #local_syntax o the_class_data thy; 
24748  413 

24218  414 
fun print_classes thy = 
415 
let 

416 
val algebra = Sign.classes_of thy; 

417 
val arities = 

418 
Symtab.empty 

419 
> Symtab.fold (fn (tyco, arities) => fold (fn (class, _) => 

420 
Symtab.map_default (class, []) (insert (op =) tyco)) arities) 

421 
((#arities o Sorts.rep_algebra) algebra); 

422 
val the_arities = these o Symtab.lookup arities; 

423 
fun mk_arity class tyco = 

424 
let 

425 
val Ss = Sorts.mg_domain algebra tyco [class]; 

426 
in Sign.pretty_arity thy (tyco, Ss, [class]) end; 

427 
fun mk_param (c, ty) = Pretty.str (Sign.extern_const thy c ^ " :: " 

428 
^ setmp show_sorts false (Sign.string_of_typ thy o Type.strip_sorts) ty); 

429 
fun mk_entry class = (Pretty.block o Pretty.fbreaks o map_filter I) [ 

430 
(SOME o Pretty.str) ("class " ^ class ^ ":"), 

431 
(SOME o Pretty.block) [Pretty.str "supersort: ", 

24731  432 
(Sign.pretty_sort thy o Sign.minimize_sort thy o Sign.super_classes thy) class], 
24657  433 
Option.map (Pretty.str o prefix "locale: " o #locale) (lookup_class_data thy class), 
24218  434 
((fn [] => NONE  ps => (SOME o Pretty.block o Pretty.fbreaks) (Pretty.str "parameters:" :: ps)) o map mk_param 
435 
o these o Option.map #params o try (AxClass.get_definition thy)) class, 

436 
(SOME o Pretty.block o Pretty.breaks) [ 

437 
Pretty.str "instances:", 

438 
Pretty.list "" "" (map (mk_arity class) (the_arities class)) 

439 
] 

440 
] 

441 
in 

24589  442 
(Pretty.writeln o Pretty.chunks o separate (Pretty.str "") 
443 
o map mk_entry o Sorts.all_classes) algebra 

24218  444 
end; 
445 

446 

447 
(* updaters *) 

448 

24748  449 
fun add_class_data ((class, superclasses), (locale, consts, local_sort, inst, intro, local_syntax)) = 
24218  450 
ClassData.map (fn (gr, tab) => ( 
451 
gr 

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452 
> Graph.new_node (class, mk_class_data ((locale, (map o pairself) fst consts, 
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453 
local_sort, inst, intro, local_syntax), 
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454 
([], (map (apfst fst o apsnd (SOME o rpair 0 o Free) o swap) consts, map snd consts)))) 
24218  455 
> fold (curry Graph.add_edge class) superclasses, 
456 
tab 

457 
> Symtab.update (locale, class) 

458 
)); 

459 

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460 
fun register_const class (entry, def) = 
24657  461 
(ClassData.map o apfst o Graph.map_node class o map_class_data o apsnd) 
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462 
(fn (defs, (operations, constraints)) => 
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463 
(def :: defs, (apsnd (SOME o snd) entry :: operations, apsnd fst entry :: constraints))); 
24836  464 

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465 
fun register_abbrev class (abbrev, ty) = 
24836  466 
(ClassData.map o apfst o Graph.map_node class o map_class_data o apsnd o apsnd) 
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467 
(fn (operations, constraints) => ((abbrev, NONE) :: operations, (abbrev, ty) :: constraints)); 
24218  468 

24589  469 

470 
(** rule calculation, tactics and methods **) 

471 

472 
fun class_intro thy locale class sups = 

473 
let 

474 
fun class_elim class = 

475 
case (map Drule.unconstrainTs o #axioms o AxClass.get_definition thy) class 

476 
of [thm] => SOME thm 

477 
 [] => NONE; 

478 
val pred_intro = case Locale.intros thy locale 

479 
of ([ax_intro], [intro]) => intro > OF_LAST ax_intro > SOME 

480 
 ([intro], []) => SOME intro 

481 
 ([], [intro]) => SOME intro 

482 
 _ => NONE; 

483 
val pred_intro' = pred_intro 

484 
> Option.map (fn intro => intro OF map_filter class_elim sups); 

485 
val class_intro = (#intro o AxClass.get_definition thy) class; 

486 
val raw_intro = case pred_intro' 

487 
of SOME pred_intro => class_intro > OF_LAST pred_intro 

488 
 NONE => class_intro; 

489 
val sort = Sign.super_classes thy class; 

24847  490 
val typ = TVar ((Name.aT, 0), sort); 
24589  491 
val defs = these_defs thy sups; 
492 
in 

493 
raw_intro 

494 
> Drule.instantiate' [SOME (Thm.ctyp_of thy typ)] [] 

495 
> strip_all_ofclass thy sort 

496 
> Thm.strip_shyps 

497 
> MetaSimplifier.rewrite_rule defs 

498 
> Drule.unconstrainTs 

499 
end; 

500 

501 
fun class_interpretation class facts defs thy = 

502 
let 

24657  503 
val { locale, inst, ... } = the_class_data thy class; 
24589  504 
val tac = (ALLGOALS o ProofContext.fact_tac) facts; 
505 
val prfx = Logic.const_of_class (NameSpace.base class); 

506 
in 

507 
prove_interpretation tac ((false, prfx), []) (Locale.Locale locale) 

508 
(inst, defs) thy 

509 
end; 

510 

511 
fun interpretation_in_rule thy (class1, class2) = 

512 
let 

513 
fun mk_axioms class = 

514 
let 

24657  515 
val { locale, inst = (_, insttab), ... } = the_class_data thy class; 
24589  516 
in 
517 
Locale.global_asms_of thy locale 

518 
> maps snd 

519 
> (map o map_aterms) (fn Free (s, _) => (the o Symtab.lookup insttab) s  t => t) 

24847  520 
> (map o map_types o map_atyps) (fn TFree _ => TFree (Name.aT, [class1])  T => T) 
24589  521 
> map (ObjectLogic.ensure_propT thy) 
522 
end; 

523 
val (prems, concls) = pairself mk_axioms (class1, class2); 

524 
in 

525 
Goal.prove_global thy [] prems (Logic.mk_conjunction_list concls) 

526 
(Locale.intro_locales_tac true (ProofContext.init thy)) 

527 
end; 

24218  528 

529 
fun intro_classes_tac facts st = 

530 
let 

531 
val thy = Thm.theory_of_thm st; 

532 
val classes = Sign.all_classes thy; 

533 
val class_trivs = map (Thm.class_triv thy) classes; 

534 
val class_intros = these_intros thy; 

535 
fun add_axclass_intro class = 

536 
case try (AxClass.get_definition thy) class of SOME {intro, ...} => cons intro  _ => I; 

537 
val axclass_intros = fold add_axclass_intro classes []; 

538 
in 

539 
st 

540 
> ((ALLGOALS (Method.insert_tac facts THEN' 

541 
REPEAT_ALL_NEW (resolve_tac (class_trivs @ class_intros @ axclass_intros)))) 

542 
THEN Tactic.distinct_subgoals_tac) 

543 
end; 

544 

545 
fun default_intro_classes_tac [] = intro_classes_tac [] 

546 
 default_intro_classes_tac _ = Tactical.no_tac; (*no error message!*) 

547 

548 
fun default_tac rules ctxt facts = 

549 
HEADGOAL (Method.some_rule_tac rules ctxt facts) ORELSE 

550 
default_intro_classes_tac facts; 

551 

552 
val _ = Context.add_setup (Method.add_methods 

553 
[("intro_classes", Method.no_args (Method.METHOD intro_classes_tac), 

554 
"backchain introduction rules of classes"), 

555 
("default", Method.thms_ctxt_args (Method.METHOD oo default_tac), 

556 
"apply some intro/elim rule")]); 

557 

558 

24589  559 
(** classes and class target **) 
24218  560 

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561 
(* class context initialization *) 
24748  562 

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563 
fun remove_constraint local_sort c ctxt = 
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564 
let 
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565 
val ty = ProofContext.the_const_constraint ctxt c; 
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566 
val ty' = map_atyps (fn ty as TFree (v, _) => if v = Name.aT 
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567 
then TFree (v, local_sort) else ty  ty => ty) ty; 
95cda5dd58d5
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changeset

568 
in 
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569 
ctxt 
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570 
> ProofContext.add_const_constraint (c, SOME ty') 
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571 
end; 
95cda5dd58d5
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changeset

572 

95cda5dd58d5
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573 
fun sort_term_check sups local_sort ts ctxt = 
24748  574 
let 
24901
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575 
val thy = ProofContext.theory_of ctxt; 
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576 
val local_operation = local_operation thy sups; 
24914
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577 
val constraints = these_constraints thy sups; 
24901
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changeset

578 
val consts = ProofContext.consts_of ctxt; 
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579 
fun check_typ (c, ty) (t', idx) = case nth (Consts.typargs consts (c, ty)) idx 
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580 
of TFree (v, _) => if v = Name.aT 
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581 
then apfst (AList.update (op =) ((c, ty), t')) else I 
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582 
 TVar (vi, _) => if TypeInfer.is_param vi 
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583 
then apfst (AList.update (op =) ((c, ty), t')) 
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changeset

584 
#> apsnd (insert (op =) vi) else I 
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changeset

585 
 _ => I; 
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586 
fun add_const (Const (c, ty)) = (case local_operation c 
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587 
of SOME (t', idx) => check_typ (c, ty) (t', idx) 
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changeset

588 
 NONE => I) 
d3cbf79769b9
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changeset

589 
 add_const _ = I; 
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changeset

590 
val (cs, typarams) = (fold o fold_aterms) add_const ts ([], []); 
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591 
val ts' = map (map_aterms 
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changeset

592 
(fn t as Const (c, ty) => the_default t (AList.lookup (op =) cs (c, ty))  t => t) 
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593 
#> (map_types o map_type_tvar) (fn var as (vi, _) => if member (op =) typarams vi 
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changeset

594 
then TFree (Name.aT, local_sort) else TVar var)) ts; 
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changeset

595 
val ctxt' = fold (ProofContext.add_const_constraint o apsnd SOME) constraints ctxt; 
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diff
changeset

596 
in (ts', ctxt') end; 
24748  597 

24914
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changeset

598 
fun init_class_ctxt sups local_sort ctxt = 
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changeset

599 
let 
95cda5dd58d5
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changeset

600 
val operations = these_operations (ProofContext.theory_of ctxt) sups; 
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changeset

601 
in 
95cda5dd58d5
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changeset

602 
ctxt 
95cda5dd58d5
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haftmann
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changeset

603 
> Variable.declare_term 
95cda5dd58d5
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haftmann
parents:
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changeset

604 
(Logic.mk_type (TFree (Name.aT, local_sort))) 
95cda5dd58d5
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diff
changeset

605 
> fold (remove_constraint local_sort o fst) operations 
95cda5dd58d5
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haftmann
parents:
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diff
changeset

606 
> Context.proof_map (Syntax.add_term_check 50 "class" 
95cda5dd58d5
added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset

607 
(sort_term_check sups local_sort)) 
95cda5dd58d5
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haftmann
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changeset

608 
end; 
24901
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diff
changeset

609 

d3cbf79769b9
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610 
fun init class ctxt = 
24914
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changeset

611 
init_class_ctxt [class] 
95cda5dd58d5
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diff
changeset

612 
((#local_sort o the_class_data (ProofContext.theory_of ctxt)) class) ctxt; 
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613 

24748  614 

24589  615 
(* class definition *) 
24218  616 

617 
local 

618 

24707  619 
fun read_param thy raw_t = (* FIXME ProofContext.read_const (!?) *) 
24218  620 
let 
24707  621 
val t = Syntax.read_term_global thy raw_t 
24218  622 
in case try dest_Const t 
623 
of SOME (c, _) => c 

624 
 NONE => error ("Not a constant: " ^ Sign.string_of_term thy t) 

625 
end; 

626 

24748  627 
fun gen_class_spec prep_class prep_expr process_expr thy raw_supclasses raw_includes_elems = 
24218  628 
let 
24748  629 
val supclasses = map (prep_class thy) raw_supclasses; 
24901
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diff
changeset

630 
val (sups, local_sort) = sups_local_sort thy supclasses; 
24748  631 
val supsort = Sign.minimize_sort thy supclasses; 
632 
val suplocales = map (Locale.Locale o #locale o the_class_data thy) sups; 

633 
val (raw_elems, includes) = fold_rev (fn Locale.Elem e => apfst (cons e) 

634 
 Locale.Expr i => apsnd (cons (prep_expr thy i))) raw_includes_elems ([], []); 

635 
val supexpr = Locale.Merge suplocales; 

636 
val supparams = (map fst o Locale.parameters_of_expr thy) supexpr; 

637 
val supconsts = AList.make (the o AList.lookup (op =) (params_of_sort thy sups)) 

638 
(map fst supparams); 

639 
val mergeexpr = Locale.Merge (suplocales @ includes); 

640 
val constrain = Element.Constrains ((map o apsnd o map_atyps) 

24847  641 
(fn TFree (_, sort) => TFree (Name.aT, sort)) supparams); 
24748  642 
in 
643 
ProofContext.init thy 

644 
> Locale.cert_expr supexpr [constrain] 

645 
> snd 

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646 
> init_class_ctxt sups local_sort 
24748  647 
> process_expr Locale.empty raw_elems 
648 
> fst 

24836  649 
> (fn elems => ((((sups, supconsts), (supsort, local_sort, mergeexpr)), 
24748  650 
(*FIXME*) if null includes then constrain :: elems else elems))) 
651 
end; 

652 

653 
val read_class_spec = gen_class_spec Sign.intern_class Locale.intern_expr Locale.read_expr; 

654 
val check_class_spec = gen_class_spec (K I) (K I) Locale.cert_expr; 

655 

656 
fun gen_class prep_spec prep_param local_syntax bname 

657 
raw_supclasses raw_includes_elems raw_other_consts thy = 

658 
let 

24836  659 
val (((sups, supconsts), (supsort, local_sort, mergeexpr)), elems) = 
24748  660 
prep_spec thy raw_supclasses raw_includes_elems; 
661 
val other_consts = map (prep_param thy) raw_other_consts; 

24589  662 
fun mk_instT class = Symtab.empty 
24847  663 
> Symtab.update (Name.aT, TFree (Name.aT, [class])); 
24589  664 
fun mk_inst class param_names cs = 
665 
Symtab.empty 

666 
> fold2 (fn v => fn (c, ty) => Symtab.update (v, Const 

667 
(c, Term.map_type_tfree (fn (v, _) => TFree (v, [class])) ty))) param_names cs; 

24218  668 
fun extract_params thy name_locale = 
669 
let 

670 
val params = Locale.parameters_of thy name_locale; 

24748  671 
val _ = if Sign.subsort thy (supsort, local_sort) then () else error 
672 
("Sort " ^ Sign.string_of_sort thy local_sort 

673 
^ " is less general than permitted least general sort " 

674 
^ Sign.string_of_sort thy supsort); 

24218  675 
in 
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676 
(map fst params, params 
24847  677 
> (map o apfst o apsnd o Term.map_type_tfree) (K (TFree (Name.aT, local_sort))) 
24901
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changeset

678 
> (map o apsnd) (fork_mixfix true (SOME "") #> fst) 
24218  679 
> chop (length supconsts) 
24901
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diff
changeset

680 
> snd) 
24218  681 
end; 
682 
fun extract_assumes name_locale params thy cs = 

683 
let 

684 
val consts = supconsts @ (map (fst o fst) params ~~ cs); 

685 
fun subst (Free (c, ty)) = 

686 
Const ((fst o the o AList.lookup (op =) consts) c, ty) 

687 
 subst t = t; 

688 
fun prep_asm ((name, atts), ts) = 

689 
((NameSpace.base name, map (Attrib.attribute thy) atts), 

24589  690 
(map o map_aterms) subst ts); 
24218  691 
in 
692 
Locale.global_asms_of thy name_locale 

693 
> map prep_asm 

694 
end; 

695 
fun note_intro name_axclass class_intro = 

696 
PureThy.note_thmss_qualified "" ((Logic.const_of_class o NameSpace.base) name_axclass) 

697 
[(("intro", []), [([class_intro], [])])] 

698 
#> snd 

699 
in 

700 
thy 

24748  701 
> Locale.add_locale_i (SOME "") bname mergeexpr elems 
24218  702 
> (fn name_locale => ProofContext.theory_result ( 
703 
`(fn thy => extract_params thy name_locale) 

24901
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diff
changeset

704 
#> (fn (globals, params) => 
24589  705 
AxClass.define_class_params (bname, supsort) params 
706 
(extract_assumes name_locale params) other_consts 

707 
#> (fn (name_axclass, (consts, axioms)) => 

24218  708 
`(fn thy => class_intro thy name_locale name_axclass sups) 
709 
#> (fn class_intro => 

710 
add_class_data ((name_axclass, sups), 

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parents:
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diff
changeset

711 
(name_locale, map fst params ~~ consts, local_sort, 
24657  712 
(mk_instT name_axclass, mk_inst name_axclass (map fst globals) 
24748  713 
(map snd supconsts @ consts)), class_intro, local_syntax)) 
24218  714 
#> note_intro name_axclass class_intro 
24589  715 
#> class_interpretation name_axclass axioms [] 
24218  716 
#> pair name_axclass 
717 
))))) 

718 
end; 

719 

720 
in 

721 

24748  722 
val class_cmd = gen_class read_class_spec read_param; 
723 
val class = gen_class check_class_spec (K I); 

24218  724 

725 
end; (*local*) 

726 

727 

24589  728 
(* definition in class target *) 
24218  729 

730 
fun export_fixes thy class = 

731 
let 

24435  732 
val consts = params_of_sort thy [class]; 
24218  733 
fun subst_aterm (t as Free (v, ty)) = (case AList.lookup (op =) consts v 
734 
of SOME (c, _) => Const (c, ty) 

735 
 NONE => t) 

736 
 subst_aterm t = t; 

24657  737 
in Term.map_aterms subst_aterm end; 
24218  738 

24901
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diff
changeset

739 
fun mk_operation_entry thy (c, rhs) = 
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parents:
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diff
changeset

740 
let 
24914
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haftmann
parents:
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diff
changeset

741 
val ty = fastype_of rhs; 
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haftmann
parents:
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diff
changeset

742 
val typargs = Sign.const_typargs thy (c, ty); 
24901
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

743 
val typidx = find_index (fn TFree (w, _) => Name.aT = w  _ => false) typargs; 
24914
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added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset

744 
in (c, (ty, (rhs, typidx))) end; 
24901
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added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

745 

24218  746 
fun add_const_in_class class ((c, rhs), syn) thy = 
747 
let 

748 
val prfx = (Logic.const_of_class o NameSpace.base) class; 

24657  749 
fun mk_name c = 
24218  750 
let 
751 
val n1 = Sign.full_name thy c; 

752 
val n2 = NameSpace.qualifier n1; 

753 
val n3 = NameSpace.base n1; 

24657  754 
in NameSpace.implode [n2, prfx, n3] end; 
755 
val constrain_sort = curry (Sorts.inter_sort (Sign.classes_of thy)) [class]; 

24748  756 
val rhs' = export_fixes thy class rhs; 
24657  757 
val subst_typ = Term.map_type_tfree (fn var as (w, sort) => 
24847  758 
if w = Name.aT then TFree (w, constrain_sort sort) else TFree var); 
24218  759 
val ty' = Term.fastype_of rhs'; 
24657  760 
val ty'' = subst_typ ty'; 
761 
val c' = mk_name c; 

762 
val def = (c, Logic.mk_equals (Const (c', ty'), rhs')); 

24901
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haftmann
parents:
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diff
changeset

763 
val (syn', _) = fork_mixfix true (SOME class) syn; 
24657  764 
fun interpret def thy = 
24218  765 
let 
24589  766 
val def' = symmetric def; 
24218  767 
val def_eq = Thm.prop_of def'; 
24901
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added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

768 
val entry = mk_operation_entry thy (c', rhs); 
24218  769 
in 
24657  770 
thy 
771 
> class_interpretation class [def'] [def_eq] 

24901
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added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

772 
> register_const class (entry, def') 
24218  773 
end; 
774 
in 

775 
thy 

776 
> Sign.add_path prfx 

24770
695a8e087b9f
Sign.add_consts_authentic: tags (Markup.property list);
wenzelm
parents:
24766
diff
changeset

777 
> Sign.add_consts_authentic [] [(c, ty', syn')] 
24218  778 
> Sign.parent_path 
779 
> Sign.sticky_prefix prfx 

780 
> PureThy.add_defs_i false [(def, [])] 

781 
> (fn [def] => interpret def) 

24766  782 
> Sign.add_const_constraint (c', SOME ty'') 
24218  783 
> Sign.restore_naming thy 
24914
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added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset

784 
> pair c' 
24218  785 
end; 
786 

24901
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

787 

d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

788 
(* abbreviation in class target *) 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

789 

d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

790 
fun add_abbrev_in_class class prmode ((c, rhs), syn) thy = 
24836  791 
let 
24901
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

792 
val prfx = (Logic.const_of_class o NameSpace.base) class; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

793 
fun mk_name c = 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

794 
let 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

795 
val n1 = Sign.full_name thy c; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

796 
val n2 = NameSpace.qualifier n1; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

797 
val n3 = NameSpace.base n1; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

798 
in NameSpace.implode [n2, prfx, prfx, n3] end; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

799 
val c' = mk_name c; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

800 
val rhs' = export_fixes thy class rhs; 
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

801 
val ty' = fastype_of rhs'; 
24836  802 
in 
803 
thy 

24901
d3cbf79769b9
added first version of userspace type system for class target
haftmann
parents:
24847
diff
changeset

804 
> Sign.add_notation prmode [(Const (c', ty'), syn)] 
24914
95cda5dd58d5
added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset

805 
> register_abbrev class (c', ty') 
95cda5dd58d5
added proper subclass concept; improved class target
haftmann
parents:
24901
diff
changeset

806 
> pair c' 
24836  807 
end; 
808 

24218  809 
end; 