1 (* Title: Pure/Isar/theory_target.ML
3 Author: Florian Haftmann, TU Muenchen
5 Targets for theory, locale and class.
8 signature NAMED_TARGET =
10 val init: string -> theory -> local_theory
11 val theory_init: theory -> local_theory
12 val reinit: local_theory -> local_theory -> local_theory
13 val context_cmd: xstring -> theory -> local_theory
14 val peek: local_theory -> {target: string, is_locale: bool, is_class: bool} option
17 structure Named_Target: NAMED_TARGET =
22 datatype target = Target of {target: string, is_locale: bool, is_class: bool};
24 fun make_target target is_locale is_class =
25 Target {target = target, is_locale = is_locale, is_class = is_class};
27 val global_target = Target {target = "", is_locale = false, is_class = false};
29 fun named_target _ "" = global_target
30 | named_target thy locale =
31 if Locale.defined thy locale
32 then Target {target = locale, is_locale = true, is_class = Class.is_class thy locale}
33 else error ("No such locale: " ^ quote locale);
35 structure Data = Proof_Data
37 type T = target option;
41 val peek = Option.map (fn Target args => args) o Data.get;
44 (* generic declarations *)
46 fun locale_declaration locale { syntax, pervasive } decl lthy =
48 val add = if syntax then Locale.add_syntax_declaration else Locale.add_declaration;
49 val locale_decl = Morphism.transform (Local_Theory.target_morphism lthy) decl;
52 |> pervasive ? Generic_Target.theory_declaration decl
53 |> Local_Theory.target (add locale locale_decl)
56 fun target_declaration (Target {target, ...}) { syntax, pervasive } =
57 if target = "" then Generic_Target.theory_declaration
58 else locale_declaration target { syntax = syntax, pervasive = pervasive };
61 (* consts in locales *)
63 fun locale_const (Target {target, is_class, ...}) (prmode as (mode, _)) ((b, mx), rhs) phi =
65 val b' = Morphism.binding phi b;
66 val rhs' = Morphism.term phi rhs;
67 val arg = (b', Term.close_schematic_term rhs');
68 val same_shape = Term.aconv_untyped (rhs, rhs');
69 (* FIXME workaround based on educated guess *)
70 val prefix' = Binding.prefix_of b';
71 val is_canonical_class = is_class andalso
72 (Binding.eq_name (b, b')
73 andalso not (null prefix')
74 andalso List.last prefix' = (Class.class_prefix target, false)
77 not is_canonical_class ?
78 (Context.mapping_result
79 (Sign.add_abbrev Print_Mode.internal arg)
80 (ProofContext.add_abbrev Print_Mode.internal arg)
81 #-> (fn (lhs' as Const (d, _), _) =>
84 (Sign.revert_abbrev mode d) (ProofContext.revert_abbrev mode d) #>
85 Morphism.form (ProofContext.target_notation true prmode [(lhs', mx)]))))
88 fun locale_const_declaration (ta as Target {target, ...}) prmode arg =
89 locale_declaration target { syntax = true, pervasive = false } (locale_const ta prmode arg);
94 fun locale_foundation ta (((b, U), mx), (b_def, rhs)) (type_params, term_params) =
95 Generic_Target.theory_foundation (((b, U), NoSyn), (b_def, rhs)) (type_params, term_params)
96 #-> (fn (lhs, def) => locale_const_declaration ta Syntax.mode_default ((b, mx), lhs)
99 fun class_foundation (ta as Target {target, ...})
100 (((b, U), mx), (b_def, rhs)) (type_params, term_params) =
101 Generic_Target.theory_foundation (((b, U), NoSyn), (b_def, rhs)) (type_params, term_params)
102 #-> (fn (lhs, def) => locale_const_declaration ta Syntax.mode_default ((b, NoSyn), lhs)
103 #> Class.const target ((b, mx), (type_params, lhs))
106 fun target_foundation (ta as Target {target, is_locale, is_class, ...}) =
107 if is_class then class_foundation ta
108 else if is_locale then locale_foundation ta
109 else Generic_Target.theory_foundation;
114 fun locale_notes locale kind global_facts local_facts lthy =
116 val global_facts' = Attrib.map_facts (K I) global_facts;
117 val local_facts' = Element.facts_map
118 (Element.morph_ctxt (Local_Theory.target_morphism lthy)) local_facts;
121 |> Local_Theory.theory (PureThy.note_thmss kind global_facts' #> snd)
122 |> Local_Theory.target (Locale.add_thmss locale kind local_facts')
125 fun target_notes (ta as Target {target, is_locale, ...}) =
126 if is_locale then locale_notes target
127 else fn kind => fn global_facts => fn _ => Generic_Target.theory_notes kind global_facts;
132 fun locale_abbrev ta prmode ((b, mx), t) xs = Local_Theory.theory_result
133 (Sign.add_abbrev Print_Mode.internal (b, t)) #->
134 (fn (lhs, _) => locale_const_declaration ta prmode
135 ((b, mx), Term.list_comb (Logic.unvarify_global lhs, xs)));
137 fun target_abbrev (ta as Target {target, is_locale, is_class, ...})
138 prmode (b, mx) (global_rhs, t') xs lthy =
141 |> locale_abbrev ta prmode ((b, if is_class then NoSyn else mx), global_rhs) xs
142 |> is_class ? Class.abbrev target prmode ((b, mx), t')
144 |> Generic_Target.theory_abbrev prmode ((b, mx), global_rhs);
149 fun pretty_thy ctxt target is_class =
151 val thy = ProofContext.theory_of ctxt;
153 [Pretty.command (if is_class then "class" else "locale"),
154 Pretty.str (" " ^ Locale.extern thy target)];
155 val fixes = map (fn (x, T) => (Binding.name x, SOME T, NoSyn))
156 (#1 (ProofContext.inferred_fixes ctxt));
157 val assumes = map (fn A => (Attrib.empty_binding, [(Thm.term_of A, [])]))
158 (Assumption.all_assms_of ctxt);
160 (if null fixes then [] else [Element.Fixes fixes]) @
161 (if null assumes then [] else [Element.Assumes assumes]);
163 if target = "" then []
164 else if null elems then [Pretty.block target_name]
165 else [Pretty.block (Pretty.fbreaks (Pretty.block (target_name @ [Pretty.str " ="]) ::
166 map (Pretty.chunks o Element.pretty_ctxt ctxt) elems))]
169 fun pretty (Target {target, is_class, ...}) ctxt =
170 Pretty.block [Pretty.command "theory", Pretty.brk 1,
171 Pretty.str (Context.theory_name (ProofContext.theory_of ctxt))] ::
172 pretty_thy ctxt target is_class;
179 fun init_context (Target {target, is_locale, is_class}) =
180 if not is_locale then ProofContext.init_global
181 else if not is_class then Locale.init target
182 else Class.init target;
184 fun init_target (ta as Target {target, ...}) thy =
187 |> Data.put (SOME ta)
188 |> Local_Theory.init NONE (Long_Name.base_name target)
189 {define = Generic_Target.define (target_foundation ta),
190 notes = Generic_Target.notes (target_notes ta),
191 abbrev = Generic_Target.abbrev (target_abbrev ta),
192 declaration = fn pervasive => target_declaration ta
193 { syntax = false, pervasive = pervasive },
194 syntax_declaration = fn pervasive => target_declaration ta
195 { syntax = true, pervasive = pervasive },
197 exit = Local_Theory.target_of};
201 fun init target thy = init_target (named_target thy target) thy;
203 fun reinit lthy = case peek lthy
204 of SOME {target, ...} => init target o Local_Theory.exit_global
205 | NONE => error "Not in a named target";
207 val theory_init = init_target global_target;
209 fun context_cmd "-" thy = init "" thy
210 | context_cmd target thy = init (Locale.intern thy target) thy;