author  wenzelm 
Tue, 09 Oct 2007 19:48:55 +0200  
changeset 24939  6dd60d1191bf 
parent 24935  a033971c63a0 
child 24949  5f00e3532418 
permissions  rwrr 
20894  1 
(* Title: Pure/Isar/theory_target.ML 
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ID: $Id$ 

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Author: Makarius 

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Common theory/locale/class targets. 
20894  6 
*) 
7 

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signature THEORY_TARGET = 

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sig 

21006  10 
val peek: local_theory > string option 
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val begin: string > Proof.context > local_theory 
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val init: string option > theory > local_theory 
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val init_cmd: xstring option > theory > local_theory 
20894  14 
end; 
15 

16 
structure TheoryTarget: THEORY_TARGET = 

17 
struct 

18 

19 
(** locale targets **) 

20 

21006  21 
(* context data *) 
22 

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structure Data = ProofDataFun 

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( 

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type T = string option; 

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fun init _ = NONE; 

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); 

28 

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val peek = Data.get; 

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31 

20894  32 
(* pretty *) 
33 

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fun pretty loc ctxt = 

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let 

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val thy = ProofContext.theory_of ctxt; 

24939  37 
val loc_kind = if is_some (Class.class_of_locale thy loc) then "class" else "locale"; 
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val loc_name = Locale.extern thy loc; 

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20894  40 
val fixes = map (fn (x, T) => (x, SOME T, NoSyn)) (#1 (ProofContext.inferred_fixes ctxt)); 
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val assumes = map (fn A => (("", []), [(A, [])])) (map Thm.term_of (Assumption.assms_of ctxt)); 
20894  42 
val elems = 
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(if null fixes then [] else [Element.Fixes fixes]) @ 

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(if null assumes then [] else [Element.Assumes assumes]); 

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in 

24939  46 
Pretty.block [Pretty.str "theory", Pretty.brk 1, Pretty.str (Context.theory_name thy)] :: 
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(if loc = "" then [] 

48 
else if null elems then [Pretty.str (loc_kind ^ " " ^ loc_name)] 

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else [Pretty.big_list (loc_kind ^ " " ^ loc_name ^ " =") 

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(map (Pretty.chunks o Element.pretty_ctxt ctxt) elems)]) 

20894  51 
end; 
52 

53 

24838  54 
(* target declarations *) 
55 

56 
fun target_decl add loc d lthy = 

57 
let 

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val d' = Morphism.transform (LocalTheory.target_morphism lthy) d; 
24838  59 
val d0 = Morphism.form d'; 
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in 

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if loc = "" then 

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lthy 

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> LocalTheory.theory (Context.theory_map d0) 

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> LocalTheory.target (Context.proof_map d0) 

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else 

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lthy 

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> LocalTheory.target (add loc d') 

68 
end; 

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70 
val type_syntax = target_decl Locale.add_type_syntax; 

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val term_syntax = target_decl Locale.add_term_syntax; 

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val declaration = target_decl Locale.add_declaration; 

73 

74 
fun target_naming loc lthy = 

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(if loc = "" then Sign.naming_of (ProofContext.theory_of lthy) 

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else ProofContext.naming_of (LocalTheory.target_of lthy)) 

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> NameSpace.qualified_names; 

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20894  81 
(* notes *) 
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fun import_export_proof ctxt (name, raw_th) = 
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let 
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val thy = ProofContext.theory_of ctxt; 
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val thy_ctxt = ProofContext.init thy; 
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val certT = Thm.ctyp_of thy; 
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val cert = Thm.cterm_of thy; 
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(*export assumes/defines*) 
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val th = Goal.norm_result raw_th; 
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val (defs, th') = LocalDefs.export ctxt thy_ctxt th; 
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val concl_conv = MetaSimplifier.rewrite true defs (Thm.cprop_of th); 
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val assms = map (MetaSimplifier.rewrite_rule defs o Thm.assume) (Assumption.assms_of ctxt); 

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val nprems = Thm.nprems_of th'  Thm.nprems_of th; 
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(*export fixes*) 
22692  98 
val tfrees = map TFree (Thm.fold_terms Term.add_tfrees th' []); 
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val frees = map Free (Thm.fold_terms Term.add_frees th' []); 

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val (th'' :: vs) = (th' :: map (Drule.mk_term o cert) (map Logic.mk_type tfrees @ frees)) 
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> Variable.export ctxt thy_ctxt 
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> Drule.zero_var_indexes_list; 
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(*thm definition*) 
21644  105 
val result = th'' 
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> PureThy.name_thm true true "" 

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> Goal.close_result 

24779  108 
> fold PureThy.tag_rule (ContextPosition.properties_of ctxt) 
21644  109 
> PureThy.name_thm true true name; 
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(*import fixes*) 
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val (tvars, vars) = 
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chop (length tfrees) (map (Thm.term_of o Drule.dest_term) vs) 
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>> map Logic.dest_type; 
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val instT = map_filter (fn (TVar v, T) => SOME (v, T)  _ => NONE) (tvars ~~ tfrees); 
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val inst = filter (is_Var o fst) (vars ~~ frees); 
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val cinstT = map (pairself certT o apfst TVar) instT; 
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val cinst = map (pairself (cert o Term.map_types (TermSubst.instantiateT instT))) inst; 
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val result' = Thm.instantiate (cinstT, cinst) result; 
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(*import assumes/defines*) 
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val assm_tac = FIRST' (map (fn assm => Tactic.compose_tac (false, assm, 0)) assms); 
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val result'' = 
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(case SINGLE (Seq.INTERVAL assm_tac 1 nprems) result' of 
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NONE => raise THM ("Failed to reimport result", 0, [result']) 
21845  127 
 SOME res => LocalDefs.trans_props ctxt [res, Thm.symmetric concl_conv]) 
21644  128 
> Goal.norm_result 
129 
> PureThy.name_thm false false name; 

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in (result'', result) end; 
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24939  133 
fun local_notes loc kind facts lthy = 
21585  134 
let 
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val is_loc = loc <> ""; 
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val thy = ProofContext.theory_of lthy; 
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val full = LocalTheory.full_name lthy; 
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val facts' = facts 
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> map (fn (a, bs) => (a, PureThy.burrow_fact (PureThy.name_multi (full (fst a))) bs)) 
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> PureThy.map_facts (import_export_proof lthy); 
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val local_facts = PureThy.map_facts #1 facts' 
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> Attrib.map_facts (Attrib.attribute_i thy); 
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val target_facts = PureThy.map_facts #1 facts' 
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> is_loc ? Element.facts_map (Element.morph_ctxt (LocalTheory.target_morphism lthy)); 
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val global_facts = PureThy.map_facts #2 facts' 
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> Attrib.map_facts (if is_loc then K I else Attrib.attribute_i thy); 
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in 
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lthy > LocalTheory.theory 
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(Sign.qualified_names 
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#> PureThy.note_thmss_i kind global_facts #> snd 
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#> Sign.restore_naming thy) 
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> is_loc ? LocalTheory.target (Locale.add_thmss loc kind target_facts) 
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20894  156 
> ProofContext.qualified_names 
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> ProofContext.note_thmss_i kind local_facts 
20894  158 
> ProofContext.restore_naming lthy 
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end; 

160 

161 

24939  162 
(* consts *) 
163 

164 
fun target_abbrev prmode ((c, mx), rhs) phi = 

165 
let 

166 
val c' = Morphism.name phi c; 

167 
val rhs' = Morphism.term phi rhs; 

168 
val arg' = (c', rhs'); 

169 
val eq_heads = 

170 
(case pairself Term.head_of (rhs, rhs') of 

171 
(Const (a, _), Const (a', _)) => a = a' 

172 
 _ => false); 

173 
in 

174 
eq_heads ? (Context.mapping_result 

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(Sign.add_abbrev Syntax.internalM [] arg') (ProofContext.add_abbrev Syntax.internalM [] arg') 

176 
#> (fn (lhs, _) => 

177 
Term.equiv_types (rhs, rhs') ? 

178 
Morphism.form (ProofContext.target_notation prmode [(lhs, mx)]))) 

179 
end; 

180 

181 
fun internal_abbrev loc prmode ((c, mx), t) lthy = lthy 

182 
(* FIXME really permissive *) 

183 
> term_syntax loc (perhaps o try o target_abbrev prmode ((c, mx), t)) 

184 
> ProofContext.add_abbrev Syntax.internalM (ContextPosition.properties_of lthy) (c, t) 

185 
> snd; 

186 

187 
fun declare_consts loc depends decls lthy = 

188 
let 

189 
val thy = ProofContext.theory_of lthy; 

190 
val is_loc = loc <> ""; 

191 
val some_class = Class.class_of_locale thy loc; 

192 

193 
val xs = filter depends (#1 (ProofContext.inferred_fixes (LocalTheory.target_of lthy))); 

194 

195 
fun const ((c, T), mx) thy = 

196 
let 

197 
val U = map #2 xs > T; 

198 
val t = Term.list_comb (Const (Sign.full_name thy c, U), map Free xs); 

199 
val (mx1, mx2) = Class.fork_mixfix is_loc some_class mx; 

200 
val mx3 = if is_loc then NoSyn else mx1; 

201 
val thy' = Sign.add_consts_authentic (ContextPosition.properties_of lthy) [(c, U, mx3)] thy; 

202 
in (((c, mx2), t), thy') end; 

203 
fun const_class (SOME class) ((c, _), mx) (_, t) = 

204 
LocalTheory.raw_theory_result (Class.add_const_in_class class ((c, t), mx)) 

205 
#> Class.remove_constraint [class] 

206 
 const_class NONE _ _ = I; 

207 
fun hide_abbrev (SOME class) abbrs thy = 

208 
let 

209 
val raw_cs = map (fst o fst) abbrs; 

210 
val prfx = (Logic.const_of_class o NameSpace.base) class; 

211 
fun mk_name c = 

212 
let 

213 
val n1 = Sign.full_name thy c; 

214 
val n2 = NameSpace.qualifier n1; 

215 
val n3 = NameSpace.base n1; 

216 
in NameSpace.implode [n2, prfx, prfx, n3] end; 

217 
val cs = map mk_name raw_cs; 

218 
in 

219 
Sign.hide_consts_i true cs thy 

220 
end 

221 
 hide_abbrev NONE _ thy = thy; 

222 

223 
val (abbrs, lthy') = lthy 

224 
> LocalTheory.theory_result (fold_map const decls) 

225 
val defs = map (apsnd (pair ("", []))) abbrs; 

226 

227 
in 

228 
lthy' 

229 
> fold2 (const_class some_class) decls abbrs 

230 
> is_loc ? fold (internal_abbrev loc Syntax.default_mode) abbrs 

231 
> LocalTheory.raw_theory (hide_abbrev some_class abbrs) 

232 
(*FIXME abbreviations should never occur*) 

233 
> LocalDefs.add_defs defs 

234 
>> map (apsnd snd) 

235 
end; 

236 

237 

238 
(* abbrev *) 

239 

240 
fun occ_params ctxt ts = 

241 
#1 (ProofContext.inferred_fixes ctxt) 

242 
> filter (member (op =) (fold (Variable.add_fixed ctxt) ts [])); 

243 

244 
fun local_abbrev (x, rhs) = 

245 
Variable.add_fixes [x] #> (fn [x'] => 

246 
let 

247 
val T = Term.fastype_of rhs; 

248 
val lhs = Free (x', T); 

249 
in 

250 
Variable.declare_term lhs #> 

251 
Variable.declare_term rhs #> 

252 
Assumption.add_assms (K (K (I, Envir.expand_term_frees [((x', T), rhs)]))) [] #> snd #> 

253 
pair (lhs, rhs) 

254 
end); 

255 

256 
fun abbrev loc prmode ((raw_c, mx), raw_t) lthy = 

257 
let 

258 
val thy = ProofContext.theory_of lthy; 

259 
val is_loc = loc <> ""; 

260 
val some_class = Class.class_of_locale thy loc; 

261 

262 
val thy_ctxt = ProofContext.init thy; 

263 
val target = LocalTheory.target_of lthy; 

264 
val target_morphism = LocalTheory.target_morphism lthy; 

265 

266 
val c = Morphism.name target_morphism raw_c; 

267 
val t = Morphism.term target_morphism raw_t; 

268 
val xs = map Free (occ_params target [t]); 

269 
val u = fold_rev Term.lambda xs t; 

270 
val U = Term.fastype_of u; 

271 
val u' = singleton (Variable.export_terms (Variable.declare_term u target) thy_ctxt) u; 

272 
val (mx1, mx2) = Class.fork_mixfix is_loc some_class mx; 

273 
val mx3 = if is_loc then NoSyn else mx1; 

274 
fun add_abbrev_in_class (SOME class) abbr = 

275 
LocalTheory.raw_theory_result (Class.add_abbrev_in_class class prmode abbr) 

276 
#> (fn c => Class.remove_constraint [class] c) 

277 
 add_abbrev_in_class NONE _ = I; 

278 
in 

279 
lthy 

280 
> LocalTheory.theory_result 

281 
(Sign.add_abbrev (#1 prmode) (ContextPosition.properties_of lthy) (c, u')) 

282 
> (fn (lhs as Const (full_c, _), rhs) => LocalTheory.theory (Sign.add_notation prmode [(lhs, mx3)]) 

283 
#> is_loc ? internal_abbrev loc prmode ((c, mx2), Term.list_comb (Const (full_c, U), xs)) 

284 
#> add_abbrev_in_class some_class ((c, Term.list_comb (Const (full_c, U), xs)), mx1) 

285 
#> local_abbrev (c, rhs)) 

286 
end; 

287 

288 

289 
(* defs *) 

290 

291 
local 

292 

293 
fun expand_term ctxt t = 

294 
let 

295 
val thy = ProofContext.theory_of ctxt; 

296 
val thy_ctxt = ProofContext.init thy; 

297 
val ct = Thm.cterm_of thy t; 

298 
val (defs, ct') = LocalDefs.export ctxt thy_ctxt (Drule.mk_term ct) > Drule.dest_term; 

299 
in (Thm.term_of ct', MetaSimplifier.rewrite true defs ct) end; 

300 

301 
fun add_def (name, prop) thy = 

302 
let 

303 
val tfrees = rev (map TFree (Term.add_tfrees prop [])); 

304 
val tfrees' = map (fn a => TFree (a, [])) (Name.invents Name.context Name.aT (length tfrees)); 

305 
val strip_sorts = tfrees ~~ tfrees'; 

306 
val recover_sorts = map (pairself (Thm.ctyp_of thy o Logic.varifyT)) (tfrees' ~~ tfrees); 

307 

308 
val prop' = Term.map_types (Term.map_atyps (perhaps (AList.lookup (op =) strip_sorts))) prop; 

309 
val thy' = Theory.add_defs_i false false [(name, prop')] thy; 

310 
val axm' = Thm.get_axiom_i thy' (Sign.full_name thy' name); 

311 
val def = Thm.instantiate (recover_sorts, []) axm'; 

312 
in (Drule.unvarify def, thy') end; 

313 

314 
in 

315 

316 
fun local_def loc kind ((c, mx), ((name, atts), rhs)) lthy1 = 

317 
let 

318 
val (rhs', rhs_conv) = expand_term lthy1 rhs; 

319 
val xs = Variable.add_fixed (LocalTheory.target_of lthy1) rhs' []; 

320 
val T = Term.fastype_of rhs; 

321 

322 
(*consts*) 

323 
val ([(lhs, lhs_def)], lthy2) = lthy1 

324 
> declare_consts loc (member (op =) xs) [((c, T), mx)]; 

325 
val (_, lhs') = Logic.dest_equals (Thm.prop_of lhs_def); 

326 

327 
(*def*) 

328 
val name' = Thm.def_name_optional c name; 

329 
val (def, lthy3) = lthy2 

330 
> LocalTheory.theory_result (add_def (name', Logic.mk_equals (lhs', rhs'))); 

331 
val eq = LocalDefs.trans_terms lthy3 

332 
[(*c == loc.c xs*) lhs_def, 

333 
(*lhs' == rhs'*) def, 

334 
(*rhs' == rhs*) Thm.symmetric rhs_conv]; 

335 

336 
(*notes*) 

337 
val ([(res_name, [res])], lthy4) = lthy3 

338 
> local_notes loc kind [((name', atts), [([eq], [])])]; 

339 
in ((lhs, (res_name, res)), lthy4) end; 

340 

341 
end; 

342 

343 

344 
(* axioms *) 

345 

346 
local 

347 

348 
fun add_axiom hyps (name, prop) thy = 

349 
let 

350 
val name' = if name = "" then "axiom_" ^ serial_string () else name; 

351 
val prop' = Logic.list_implies (hyps, prop); 

352 
val thy' = thy > Theory.add_axioms_i [(name', prop')]; 

353 
val axm = Drule.unvarify (Thm.get_axiom_i thy' (Sign.full_name thy' name')); 

354 
val prems = map (Thm.assume o Thm.cterm_of thy') hyps; 

355 
in (Drule.implies_elim_list axm prems, thy') end; 

356 

357 
in 

358 

359 
fun axioms loc kind specs lthy = 

360 
let 

361 
val hyps = map Thm.term_of (Assumption.assms_of lthy); 

362 
fun axiom ((name, atts), props) thy = thy 

363 
> fold_map (add_axiom hyps) (PureThy.name_multi name props) 

364 
> (fn ths => pair ((name, atts), [(ths, [])])); 

365 
in 

366 
lthy 

367 
> fold (fold Variable.declare_term o snd) specs 

368 
> LocalTheory.theory_result (fold_map axiom specs) 

369 
> local_notes loc kind 

370 
end; 

371 

372 
end; 

373 

374 

20894  375 
(* init and exit *) 
376 

22353  377 
fun begin loc ctxt = 
378 
let 

379 
val thy = ProofContext.theory_of ctxt; 

380 
val is_loc = loc <> ""; 

381 
in 

382 
ctxt 

383 
> Data.put (if is_loc then SOME loc else NONE) 

24939  384 
> fold Class.init (the_list (Class.class_of_locale thy loc)) 
24748  385 
> LocalTheory.init (NameSpace.base loc) 
21747  386 
{pretty = pretty loc, 
24939  387 
consts = declare_consts loc, 
388 
axioms = axioms loc, 

389 
abbrev = abbrev loc, 

390 
def = local_def loc, 

391 
notes = local_notes loc, 

21747  392 
type_syntax = type_syntax loc, 
393 
term_syntax = term_syntax loc, 

394 
declaration = declaration loc, 

22203  395 
target_naming = target_naming loc, 
21804  396 
reinit = fn _ => 
24657  397 
(if is_loc then Locale.init loc else ProofContext.init) 
398 
#> begin loc, 

24935
a033971c63a0
removed LocalTheory.defs/target_morphism operations;
wenzelm
parents:
24914
diff
changeset

399 
exit = LocalTheory.target_of} 
21747  400 
end; 
20894  401 

24935
a033971c63a0
removed LocalTheory.defs/target_morphism operations;
wenzelm
parents:
24914
diff
changeset

402 
fun init NONE thy = begin "" (ProofContext.init thy) 
a033971c63a0
removed LocalTheory.defs/target_morphism operations;
wenzelm
parents:
24914
diff
changeset

403 
 init (SOME loc) thy = begin loc (Locale.init loc thy); 
20894  404 

24935
a033971c63a0
removed LocalTheory.defs/target_morphism operations;
wenzelm
parents:
24914
diff
changeset

405 
fun init_cmd (SOME "") thy = init NONE thy 
a033971c63a0
removed LocalTheory.defs/target_morphism operations;
wenzelm
parents:
24914
diff
changeset

406 
 init_cmd loc thy = init (Option.map (Locale.intern thy) loc) thy; 
20894  407 

408 
end; 