author  wenzelm 
Fri, 12 Oct 2007 20:21:58 +0200  
changeset 25012  448af76a1ba3 
parent 25002  c3d9cb390471 
child 25022  bb0dcb603a13 
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. 
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*) 
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signature THEORY_TARGET = 

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sig 

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val peek: local_theory > {target: string, is_locale: bool, is_class: bool} 
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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 
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end; 
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structure TheoryTarget: THEORY_TARGET = 

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struct 

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24987  19 

20894  20 
(** locale targets **) 
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21006  22 
(* context data *) 
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datatype target = Target of {target: string, is_locale: bool, is_class: bool}; 
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fun make_target target is_locale is_class = 
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Target {target = target, is_locale = is_locale, is_class = is_class}; 
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21006  29 
structure Data = ProofDataFun 
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( 

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type T = target; 
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fun init _ = make_target "" false false; 
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); 
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val peek = (fn Target args => args) o Data.get; 
21006  36 

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(* pretty *) 
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fun pretty (Target {target, is_locale, is_class}) ctxt = 
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let 
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val thy = ProofContext.theory_of ctxt; 

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val target_name = (if is_class then "class " else "locale ") ^ Locale.extern thy target; 
24939  44 

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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)); 
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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  51 
Pretty.block [Pretty.str "theory", Pretty.brk 1, Pretty.str (Context.theory_name thy)] :: 
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(if target = "" then [] 
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else if null elems then [Pretty.str target_name] 
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else [Pretty.big_list (target_name ^ " =") 
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(map (Pretty.chunks o Element.pretty_ctxt ctxt) elems)]) 
20894  56 
end; 
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24838  59 
(* target declarations *) 
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fun target_decl add (Target {target, ...}) d lthy = 
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let 
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val d' = Morphism.transform (LocalTheory.target_morphism lthy) d; 
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val d0 = Morphism.form d'; 
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in 

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if target = "" then 
24838  67 
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 target d') 
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end; 
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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; 

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fun target_naming (Target {target, ...}) lthy = 
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(if target = "" 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  86 
(* 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*) 
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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*) 
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val result = th'' 
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> PureThy.name_thm true true "" 

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> Goal.close_result 

24779  113 
> fold PureThy.tag_rule (ContextPosition.properties_of ctxt) 
21644  114 
> 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  132 
 SOME res => LocalDefs.trans_props ctxt [res, Thm.symmetric concl_conv]) 
21644  133 
> Goal.norm_result 
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> PureThy.name_thm false false name; 

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in (result'', result) end; 
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fun local_notes (Target {target, is_locale, ...}) kind facts lthy = 
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let 
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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_locale ? 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_locale 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_locale ? LocalTheory.target (Locale.add_thmss target kind target_facts) 
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20894  160 
> ProofContext.qualified_names 
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> ProofContext.note_thmss_i kind local_facts 
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> ProofContext.restore_naming lthy 
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end; 

164 

165 

24939  166 
(* consts *) 
167 

168 
fun target_abbrev prmode ((c, mx), rhs) phi = 

169 
let 

170 
val c' = Morphism.name phi c; 

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val rhs' = Morphism.term phi rhs; 

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

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val eq_heads = 

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

175 
(Const (a, _), Const (a', _)) => a = a' 

176 
 _ => false); 

177 
in 

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eq_heads ? (Context.mapping_result 

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

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#> (fn (lhs, _) => 

24983  181 
Type.similar_types (rhs, rhs') ? 
24949  182 
Morphism.form (ProofContext.target_notation true prmode [(lhs, mx)]))) 
24939  183 
end; 
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fun internal_abbrev ta prmode ((c, mx), t) lthy = lthy 
24939  186 
(* FIXME really permissive *) 
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> term_syntax ta (perhaps o try o target_abbrev prmode ((c, mx), t)) 
24939  188 
> ProofContext.add_abbrev Syntax.internalM (ContextPosition.properties_of lthy) (c, t) 
189 
> snd; 

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fun declare_consts (ta as Target {target, is_locale, is_class}) depends decls lthy = 
24939  192 
let 
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val thy = ProofContext.theory_of lthy; 

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

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196 
fun const ((c, T), mx) thy = 

197 
let 

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val U = map #2 xs > T; 

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val (mx1, mx2) = Class.fork_mixfix is_locale is_class mx; 
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val mx3 = if is_locale then NoSyn else mx1; 
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val (const, thy') = Sign.declare_const (ContextPosition.properties_of lthy) (c, U, mx3) thy; 
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val t = Term.list_comb (const, map Free xs); 
24939  203 
in (((c, mx2), t), thy') end; 
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fun const_class (SOME class) ((c, _), mx) (_, t) = 

205 
LocalTheory.raw_theory_result (Class.add_const_in_class class ((c, t), mx)) 

25002  206 
#> Class.remove_constraint class 
24939  207 
 const_class NONE _ _ = I; 
208 

209 
val (abbrs, lthy') = lthy 

210 
> LocalTheory.theory_result (fold_map const decls) 

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

212 

213 
in 

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lthy' 

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> fold2 (const_class (if is_class then SOME target else NONE)) decls abbrs 
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> is_locale ? fold (internal_abbrev ta Syntax.mode_default) abbrs 
24939  217 
> LocalDefs.add_defs defs 
218 
>> map (apsnd snd) 

219 
end; 

220 

221 

222 
(* abbrev *) 

223 

224 
fun occ_params ctxt ts = 

225 
#1 (ProofContext.inferred_fixes ctxt) 

226 
> filter (member (op =) (fold (Variable.add_fixed ctxt) ts [])); 

227 

228 
fun local_abbrev (x, rhs) = 

229 
Variable.add_fixes [x] #> (fn [x'] => 

230 
let 

231 
val T = Term.fastype_of rhs; 

232 
val lhs = Free (x', T); 

233 
in 

234 
Variable.declare_term lhs #> 

235 
Variable.declare_term rhs #> 

236 
Assumption.add_assms (K (K (I, Envir.expand_term_frees [((x', T), rhs)]))) [] #> snd #> 

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pair (lhs, rhs) 

238 
end); 

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fun abbrev (ta as Target {target, is_locale, is_class}) prmode ((raw_c, mx), raw_t) lthy = 
24939  241 
let 
242 
val thy = ProofContext.theory_of lthy; 

243 

244 
val thy_ctxt = ProofContext.init thy; 

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val target_ctxt = LocalTheory.target_of lthy; 
24939  246 
val target_morphism = LocalTheory.target_morphism lthy; 
247 

248 
val c = Morphism.name target_morphism raw_c; 

249 
val t = Morphism.term target_morphism raw_t; 

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val xs = map Free (occ_params target_ctxt [t]); 
24939  251 
val u = fold_rev Term.lambda xs t; 
252 
val U = Term.fastype_of u; 

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val u' = singleton (Variable.export_terms (Variable.declare_term u target_ctxt) thy_ctxt) u; 
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val (mx1, mx2) = Class.fork_mixfix is_locale is_class mx; 
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val mx3 = if is_locale then NoSyn else mx1; 
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fun add_abbrev_in_class abbr = 
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LocalTheory.raw_theory_result (Class.add_abbrev_in_class target prmode abbr) 
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#> Class.remove_constraint target; 
24939  259 
in 
260 
lthy 

261 
> LocalTheory.theory_result 

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

24949  263 
> (fn (lhs as Const (full_c, _), rhs) => 
264 
LocalTheory.theory (Sign.notation true prmode [(lhs, mx3)]) 

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#> is_locale ? internal_abbrev ta prmode ((c, mx2), Term.list_comb (Const (full_c, U), xs)) 
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#> is_class ? add_abbrev_in_class ((c, Term.list_comb (Const (full_c, U), xs)), mx1) 
24949  267 
#> local_abbrev (c, rhs)) 
24939  268 
end; 
269 

270 

271 
(* defs *) 

272 

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fun local_def (ta as Target {target, is_locale, is_class}) 
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kind ((c, mx), ((name, atts), rhs)) lthy = 
24939  275 
let 
24987  276 
val thy = ProofContext.theory_of lthy; 
24939  277 
val thy_ctxt = ProofContext.init thy; 
278 

24987  279 
val (rhs', rhs_conv) = 
280 
LocalDefs.export_cterm lthy thy_ctxt (Thm.cterm_of thy rhs) >> Thm.term_of; 

281 
val xs = Variable.add_fixed (LocalTheory.target_of lthy) rhs' []; 

24939  282 
val T = Term.fastype_of rhs; 
283 

284 
(*consts*) 

24987  285 
val ([(lhs, lhs_def)], lthy2) = lthy 
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> declare_consts ta (member (op =) xs) [((c, T), mx)]; 
24939  287 
val (_, lhs') = Logic.dest_equals (Thm.prop_of lhs_def); 
288 

289 
(*def*) 

290 
val name' = Thm.def_name_optional c name; 

291 
val (def, lthy3) = lthy2 

24983  292 
> LocalTheory.theory_result (Thm.add_def false (name', Logic.mk_equals (lhs', rhs'))); 
24939  293 
val eq = LocalDefs.trans_terms lthy3 
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[(*c == global.c xs*) lhs_def, 
24939  295 
(*lhs' == rhs'*) def, 
296 
(*rhs' == rhs*) Thm.symmetric rhs_conv]; 

297 

298 
(*notes*) 

299 
val ([(res_name, [res])], lthy4) = lthy3 

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> local_notes ta kind [((name', atts), [([eq], [])])]; 
24939  301 
in ((lhs, (res_name, res)), lthy4) end; 
302 

303 

304 
(* axioms *) 

305 

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fun local_axioms ta kind (vars, specs) lthy = 
24939  307 
let 
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val spec_frees = member (op =) (fold (fold Term.add_frees o snd) specs []); 
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val (consts, lthy') = declare_consts ta spec_frees vars lthy; 
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val heads = map (Term.head_of o Thm.term_of o Thm.rhs_of o #2) consts; 
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val hyps = map Thm.term_of (Assumption.assms_of lthy'); 
24939  313 
fun axiom ((name, atts), props) thy = thy 
24983  314 
> fold_map (Thm.add_axiom hyps) (PureThy.name_multi name props) 
24939  315 
> (fn ths => pair ((name, atts), [(ths, [])])); 
316 
in 

24987  317 
lthy' 
318 
> LocalTheory.theory (Theory.add_finals_i false heads) 

24939  319 
> fold (fold Variable.declare_term o snd) specs 
320 
> LocalTheory.theory_result (fold_map axiom specs) 

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> local_notes ta kind 
24987  322 
>> pair (map #1 consts) 
24939  323 
end; 
324 

325 

20894  326 
(* init and exit *) 
327 

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fun begin target ctxt = 
22353  329 
let 
330 
val thy = ProofContext.theory_of ctxt; 

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val is_locale = target <> ""; 
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val is_class = is_some (Class.class_of_locale thy target); 
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val ta = Target {target = target, is_locale = is_locale, is_class = is_class}; 
22353  334 
in 
335 
ctxt 

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> Data.put ta 
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> is_class ? Class.init target 
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> LocalTheory.init (NameSpace.base target) 
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{pretty = pretty ta, 
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axioms = local_axioms ta, 
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abbrev = abbrev ta, 
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def = local_def ta, 
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notes = local_notes ta, 
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type_syntax = type_syntax ta, 
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term_syntax = term_syntax ta, 
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declaration = declaration ta, 
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target_naming = target_naming ta, 
21804  348 
reinit = fn _ => 
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(if is_locale then Locale.init target else ProofContext.init) 
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#> begin target, 
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exit = LocalTheory.target_of} 
21747  352 
end; 
20894  353 

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fun init NONE thy = begin "" (ProofContext.init thy) 
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 init (SOME target) thy = begin target (Locale.init target thy); 
20894  356 

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fun init_cmd (SOME "") thy = init NONE thy 
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 init_cmd target thy = init (Option.map (Locale.intern thy) target) thy; 
20894  359 

360 
end; 