author | haftmann |
Tue, 11 Dec 2007 10:23:14 +0100 | |
changeset 25607 | 779c79c36c5e |
parent 25597 | 34860182b250 |
child 25684 | 2b3cce7d22b8 |
permissions | -rw-r--r-- |
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(* 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/instantiation/overloading 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, |
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is_class: bool, instantiation: string list * sort list * sort, |
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overloading: ((string * typ) * (string * bool)) list} |
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val init: string option -> theory -> local_theory |
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val begin: string -> Proof.context -> local_theory |
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val context: xstring -> theory -> local_theory |
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val instantiation: string list * sort list * sort -> theory -> local_theory |
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val overloading: ((string * typ) * (string * bool)) list -> theory -> local_theory |
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val overloading_cmd: (((xstring * xstring) * string) * bool) list -> 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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(* context data *) |
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datatype target = Target of {target: string, is_locale: bool, |
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is_class: bool, instantiation: string list * sort list * sort, |
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overloading: ((string * typ) * (string * bool)) list}; |
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fun make_target target is_locale is_class instantiation overloading = |
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Target {target = target, is_locale = is_locale, |
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is_class = is_class, instantiation = instantiation, overloading = overloading}; |
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val global_target = make_target "" false false ([], [], []) []; |
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structure Data = ProofDataFun |
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( |
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type T = target; |
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fun init _ = global_target; |
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); |
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val peek = (fn Target args => args) o Data.get; |
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(* pretty *) |
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fun pretty_thy ctxt target is_locale is_class = |
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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; |
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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 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)] |
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end; |
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fun pretty (Target {target, is_locale, is_class, instantiation, overloading}) ctxt = |
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Pretty.block [Pretty.str "theory", Pretty.brk 1, |
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Pretty.str (Context.theory_name (ProofContext.theory_of ctxt))] :: |
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(if not (null overloading) then [Overloading.pretty ctxt] |
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else if not (null (#1 instantiation)) then [Class.pretty_instantiation ctxt] |
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else pretty_thy ctxt target is_locale is_class); |
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(* 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 |
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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 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 class_target (Target {target, ...}) f = |
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LocalTheory.raw_theory f #> |
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LocalTheory.target (Class.refresh_syntax target); |
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(* 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 |
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|> fold PureThy.tag_rule (ContextPosition.properties_of ctxt) |
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|> 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 re-import result", 0, [result']) |
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| SOME res => LocalDefs.trans_props ctxt [res, Thm.symmetric concl_conv]) |
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|> 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 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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|> 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; |
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(* declare_const *) |
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fun fork_mixfix (Target {is_locale, is_class, ...}) mx = |
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if not is_locale then (NoSyn, NoSyn, mx) |
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else if not is_class then (NoSyn, mx, NoSyn) |
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else (mx, NoSyn, NoSyn); |
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fun locale_const (Target {target, is_class, ...}) (prmode as (mode, _)) pos ((c, mx), rhs) phi = |
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let |
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val c' = Morphism.name phi c; |
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val rhs' = Morphism.term phi rhs; |
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val legacy_arg = (c', Term.close_schematic_term (Logic.legacy_varify rhs')); |
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val arg = (c', Term.close_schematic_term rhs'); |
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val similar_body = Type.similar_types (rhs, rhs'); |
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(* FIXME workaround based on educated guess *) |
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val class_global = c' = NameSpace.qualified (Class.class_prefix target) c; |
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in |
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not (is_class andalso (similar_body orelse class_global)) ? |
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(Context.mapping_result |
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(Sign.add_abbrev PrintMode.internal pos legacy_arg) |
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(ProofContext.add_abbrev PrintMode.internal pos arg) |
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#-> (fn (lhs' as Const (d, _), _) => |
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|
197 |
similar_body ? |
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198 |
(Context.mapping (Sign.revert_abbrev mode d) (ProofContext.revert_abbrev mode d) #> |
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Morphism.form (ProofContext.target_notation true prmode [(lhs', mx)])))) |
24939 | 200 |
end; |
201 |
||
25485 | 202 |
fun declare_const (ta as Target {target, is_locale, is_class, ...}) depends ((c, T), mx) lthy = |
24939 | 203 |
let |
25053 | 204 |
val pos = ContextPosition.properties_of lthy; |
24939 | 205 |
val xs = filter depends (#1 (ProofContext.inferred_fixes (LocalTheory.target_of lthy))); |
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val U = map #2 xs ---> T; |
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val (mx1, mx2, mx3) = fork_mixfix ta mx; |
25519 | 208 |
fun syntax_error c = error ("Illegal mixfix syntax for overloaded constant " ^ quote c); |
25485 | 209 |
val declare_const = case Class.instantiation_param lthy c |
25519 | 210 |
of SOME c' => if mx3 <> NoSyn then syntax_error c' |
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else LocalTheory.theory_result (AxClass.declare_overloaded (c', U)) |
25485 | 212 |
##> Class.confirm_declaration c |
25519 | 213 |
| NONE => (case Overloading.operation lthy c |
214 |
of SOME (c', _) => if mx3 <> NoSyn then syntax_error c' |
|
215 |
else LocalTheory.theory_result (Overloading.declare (c', U)) |
|
216 |
##> Overloading.confirm c |
|
217 |
| NONE => LocalTheory.theory_result (Sign.declare_const pos (c, U, mx3))); |
|
25485 | 218 |
val (const, lthy') = lthy |> declare_const; |
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|
219 |
val t = Term.list_comb (const, map Free xs); |
24939 | 220 |
in |
221 |
lthy' |
|
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222 |
|> is_locale ? term_syntax ta (locale_const ta Syntax.mode_default pos ((c, mx2), t)) |
25607 | 223 |
|> is_class ? class_target ta (Class.declare target pos ((c, mx1), t)) |
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|
224 |
|> LocalDefs.add_def ((c, NoSyn), t) |
24939 | 225 |
end; |
226 |
||
227 |
||
228 |
(* abbrev *) |
|
229 |
||
25485 | 230 |
fun abbrev (ta as Target {target, is_locale, is_class, ...}) prmode ((c, mx), t) lthy = |
24939 | 231 |
let |
25053 | 232 |
val pos = ContextPosition.properties_of lthy; |
233 |
val thy_ctxt = ProofContext.init (ProofContext.theory_of lthy); |
|
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changeset
|
234 |
val target_ctxt = LocalTheory.target_of lthy; |
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parents:
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diff
changeset
|
235 |
|
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internal tuning: class_target, fork_mixfix, declare_const (singleton), abbrev;
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diff
changeset
|
236 |
val (mx1, mx2, mx3) = fork_mixfix ta mx; |
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|
237 |
val t' = Assumption.export_term lthy target_ctxt t; |
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changeset
|
238 |
val xs = map Free (rev (Variable.add_fixed target_ctxt t' [])); |
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diff
changeset
|
239 |
val u = fold_rev lambda xs t'; |
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diff
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|
240 |
val global_rhs = |
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internal tuning: class_target, fork_mixfix, declare_const (singleton), abbrev;
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diff
changeset
|
241 |
singleton (Variable.export_terms (Variable.declare_term u target_ctxt) thy_ctxt) u; |
25121 | 242 |
in |
243 |
lthy |> |
|
244 |
(if is_locale then |
|
25395
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abbrev: back to PrintMode.internal, which works at least half-way;
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diff
changeset
|
245 |
LocalTheory.theory_result (Sign.add_abbrev PrintMode.internal pos (c, global_rhs)) |
25121 | 246 |
#-> (fn (lhs, _) => |
25105
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diff
changeset
|
247 |
let val lhs' = Term.list_comb (Logic.unvarify lhs, xs) in |
25212
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locale_const: in_class workaround prevents additional locale version of class consts;
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parents:
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diff
changeset
|
248 |
term_syntax ta (locale_const ta prmode pos ((c, mx2), lhs')) #> |
25607 | 249 |
is_class ? class_target ta (Class.abbrev target prmode pos ((c, mx1), t')) |
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changeset
|
250 |
end) |
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diff
changeset
|
251 |
else |
25121 | 252 |
LocalTheory.theory |
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diff
changeset
|
253 |
(Sign.add_abbrev (#1 prmode) pos (c, global_rhs) #-> (fn (lhs, _) => |
25121 | 254 |
Sign.notation true prmode [(lhs, mx3)]))) |
255 |
|> ProofContext.add_abbrev PrintMode.internal pos (c, t) |> snd |
|
256 |
|> LocalDefs.fixed_abbrev ((c, NoSyn), t) |
|
24939 | 257 |
end; |
258 |
||
259 |
||
25022 | 260 |
(* define *) |
24939 | 261 |
|
25485 | 262 |
fun define (ta as Target {target, is_locale, is_class, ...}) |
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25002
diff
changeset
|
263 |
kind ((c, mx), ((name, atts), rhs)) lthy = |
24939 | 264 |
let |
24987 | 265 |
val thy = ProofContext.theory_of lthy; |
24939 | 266 |
val thy_ctxt = ProofContext.init thy; |
267 |
||
25022 | 268 |
val name' = Thm.def_name_optional c name; |
24987 | 269 |
val (rhs', rhs_conv) = |
270 |
LocalDefs.export_cterm lthy thy_ctxt (Thm.cterm_of thy rhs) |>> Thm.term_of; |
|
271 |
val xs = Variable.add_fixed (LocalTheory.target_of lthy) rhs' []; |
|
24939 | 272 |
val T = Term.fastype_of rhs; |
273 |
||
25105
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wenzelm
parents:
25096
diff
changeset
|
274 |
(*const*) |
c9f67836c4d8
internal tuning: class_target, fork_mixfix, declare_const (singleton), abbrev;
wenzelm
parents:
25096
diff
changeset
|
275 |
val ((lhs, local_def), lthy2) = lthy |> declare_const ta (member (op =) xs) ((c, T), mx); |
25022 | 276 |
val (_, lhs') = Logic.dest_equals (Thm.prop_of local_def); |
24939 | 277 |
|
278 |
(*def*) |
|
25519 | 279 |
val define_const = case Overloading.operation lthy c |
280 |
of SOME (_, checked) => |
|
281 |
(fn name => fn (Const (c, _), rhs) => Overloading.define checked name (c, rhs)) |
|
282 |
| NONE => if is_none (Class.instantiation_param lthy c) |
|
283 |
then (fn name => fn eq => Thm.add_def false false (name, Logic.mk_equals eq)) |
|
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parents:
25542
diff
changeset
|
284 |
else (fn name => fn (Const (c, _), rhs) => AxClass.define_overloaded name (c, rhs)); |
25022 | 285 |
val (global_def, lthy3) = lthy2 |
25462 | 286 |
|> LocalTheory.theory_result (define_const name' (lhs', rhs')); |
25485 | 287 |
val def = LocalDefs.trans_terms lthy3 |
25022 | 288 |
[(*c == global.c xs*) local_def, |
289 |
(*global.c xs == rhs'*) global_def, |
|
25485 | 290 |
(*rhs' == rhs*) Thm.symmetric rhs_conv]; |
24939 | 291 |
|
25105
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parents:
25096
diff
changeset
|
292 |
(*note*) |
24939 | 293 |
val ([(res_name, [res])], lthy4) = lthy3 |
25022 | 294 |
|> notes ta kind [((name', atts), [([def], [])])]; |
24939 | 295 |
in ((lhs, (res_name, res)), lthy4) end; |
296 |
||
297 |
||
298 |
(* axioms *) |
|
299 |
||
25022 | 300 |
fun axioms ta kind (vars, specs) lthy = |
24939 | 301 |
let |
25022 | 302 |
val thy_ctxt = ProofContext.init (ProofContext.theory_of lthy); |
303 |
val expanded_props = map (Assumption.export_term lthy thy_ctxt) (maps snd specs); |
|
304 |
val xs = fold Term.add_frees expanded_props []; |
|
24989
e656aeaa8b28
local_axioms: impose hyps stemming from local consts as well
wenzelm
parents:
24987
diff
changeset
|
305 |
|
25022 | 306 |
(*consts*) |
25105
c9f67836c4d8
internal tuning: class_target, fork_mixfix, declare_const (singleton), abbrev;
wenzelm
parents:
25096
diff
changeset
|
307 |
val (consts, lthy') = fold_map (declare_const ta (member (op =) xs)) vars lthy; |
25022 | 308 |
val global_consts = map (Term.dest_Const o Term.head_of o Thm.term_of o Thm.rhs_of o #2) consts; |
309 |
||
310 |
(*axioms*) |
|
25514 | 311 |
val hyps = map Thm.term_of (Assumption.assms_of lthy'); |
24939 | 312 |
fun axiom ((name, atts), props) thy = thy |
24983 | 313 |
|> fold_map (Thm.add_axiom hyps) (PureThy.name_multi name props) |
24939 | 314 |
|-> (fn ths => pair ((name, atts), [(ths, [])])); |
315 |
in |
|
24987 | 316 |
lthy' |
25022 | 317 |
|> fold Variable.declare_term expanded_props |
318 |
|> LocalTheory.theory (fold (fn c => Theory.add_deps "" c []) global_consts) |
|
24939 | 319 |
|> LocalTheory.theory_result (fold_map axiom specs) |
25022 | 320 |
|-> notes ta kind |
24987 | 321 |
|>> pair (map #1 consts) |
24939 | 322 |
end; |
323 |
||
324 |
||
25291 | 325 |
(* init *) |
326 |
||
327 |
local |
|
20894 | 328 |
|
25291 | 329 |
fun init_target _ NONE = global_target |
25542 | 330 |
| init_target thy (SOME target) = make_target target true (Class.is_class thy target) |
331 |
([], [], []) []; |
|
25519 | 332 |
|
333 |
fun init_instantiation arities = make_target "" false false arities []; |
|
25462 | 334 |
|
25542 | 335 |
fun init_overloading operations = make_target "" false false ([], [], []) operations; |
25291 | 336 |
|
25519 | 337 |
fun init_ctxt (Target {target, is_locale, is_class, instantiation, overloading}) = |
25542 | 338 |
if (not o null o #1) instantiation then Class.init_instantiation instantiation |
25519 | 339 |
else if not (null overloading) then Overloading.init overloading |
25485 | 340 |
else if not is_locale then ProofContext.init |
341 |
else if not is_class then Locale.init target |
|
342 |
else Class.init target; |
|
25269 | 343 |
|
25542 | 344 |
fun init_lthy (ta as Target {target, instantiation, overloading, ...}) = |
25291 | 345 |
Data.put ta #> |
346 |
LocalTheory.init (NameSpace.base target) |
|
347 |
{pretty = pretty ta, |
|
348 |
axioms = axioms ta, |
|
349 |
abbrev = abbrev ta, |
|
350 |
define = define ta, |
|
351 |
notes = notes ta, |
|
352 |
type_syntax = type_syntax ta, |
|
353 |
term_syntax = term_syntax ta, |
|
354 |
declaration = declaration ta, |
|
355 |
reinit = fn lthy => init_lthy_ctxt ta (ProofContext.theory_of lthy), |
|
25542 | 356 |
exit = (if (not o null o #1) instantiation then Class.conclude_instantiation |
357 |
else if not (null overloading) then Overloading.conclude |
|
358 |
else I) #> LocalTheory.target_of} |
|
25291 | 359 |
and init_lthy_ctxt ta = init_lthy ta o init_ctxt ta; |
20894 | 360 |
|
25291 | 361 |
in |
20894 | 362 |
|
25291 | 363 |
fun init target thy = init_lthy_ctxt (init_target thy target) thy; |
364 |
fun begin target ctxt = init_lthy (init_target (ProofContext.theory_of ctxt) (SOME target)) ctxt; |
|
25269 | 365 |
|
25291 | 366 |
fun context "-" thy = init NONE thy |
367 |
| context target thy = init (SOME (Locale.intern thy target)) thy; |
|
20894 | 368 |
|
25519 | 369 |
val instantiation = init_lthy_ctxt o init_instantiation; |
370 |
||
25607 | 371 |
fun gen_overloading prep_operation raw_operations thy = |
372 |
let |
|
373 |
val check_const = dest_Const o Syntax.check_term (ProofContext.init thy) o Const; |
|
374 |
val operations = raw_operations |
|
375 |
|> map (prep_operation thy) |
|
376 |
|> (map o apfst) check_const; |
|
377 |
in |
|
378 |
thy |
|
379 |
|> init_lthy_ctxt (init_overloading operations) |
|
380 |
end; |
|
25519 | 381 |
|
382 |
val overloading = gen_overloading (K I); |
|
383 |
val overloading_cmd = gen_overloading (fn thy => fn (((raw_c, rawT), v), checked) => |
|
384 |
((Sign.intern_const thy raw_c, Sign.read_typ thy rawT), (v, checked))); |
|
25462 | 385 |
|
20894 | 386 |
end; |
25291 | 387 |
|
388 |
end; |
|
389 |