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 peek: local_theory -> {target: string, is_locale: bool, is_class: bool}
11 val init: string option -> theory -> local_theory
12 val context_cmd: xstring -> theory -> local_theory
15 structure Named_Target: NAMED_TARGET =
20 datatype target = Target of {target: string, is_locale: bool, is_class: bool};
22 fun make_target target is_locale is_class =
23 Target {target = target, is_locale = is_locale, is_class = is_class};
25 val global_target = Target {target = "", is_locale = false, is_class = false};
27 fun named_target _ NONE = global_target
28 | named_target thy (SOME locale) =
29 if Locale.defined thy locale
30 then Target {target = locale, is_locale = true, is_class = Class.is_class thy locale}
31 else error ("No such locale: " ^ quote locale);
33 structure Data = Proof_Data
36 fun init _ = global_target;
39 val peek = (fn Target args => args) o Data.get;
42 (* generic declarations *)
44 fun locale_declaration locale { syntax, pervasive } decl lthy =
46 val add = if syntax then Locale.add_syntax_declaration else Locale.add_declaration;
47 val locale_decl = Morphism.transform (Local_Theory.target_morphism lthy) decl;
50 |> pervasive ? Generic_Target.theory_declaration decl
51 |> Local_Theory.target (add locale locale_decl)
54 fun target_declaration (Target {target, ...}) { syntax, pervasive } =
55 if target = "" then Generic_Target.theory_declaration
56 else locale_declaration target { syntax = syntax, pervasive = pervasive };
59 (* consts in locales *)
61 fun locale_const (Target {target, is_class, ...}) (prmode as (mode, _)) ((b, mx), rhs) phi =
63 val b' = Morphism.binding phi b;
64 val rhs' = Morphism.term phi rhs;
65 val arg = (b', Term.close_schematic_term rhs');
66 val same_shape = Term.aconv_untyped (rhs, rhs');
67 (* FIXME workaround based on educated guess *)
68 val prefix' = Binding.prefix_of b';
69 val is_canonical_class = is_class andalso
70 (Binding.eq_name (b, b')
71 andalso not (null prefix')
72 andalso List.last prefix' = (Class.class_prefix target, false)
75 not is_canonical_class ?
76 (Context.mapping_result
77 (Sign.add_abbrev Print_Mode.internal arg)
78 (ProofContext.add_abbrev Print_Mode.internal arg)
79 #-> (fn (lhs' as Const (d, _), _) =>
82 (Sign.revert_abbrev mode d) (ProofContext.revert_abbrev mode d) #>
83 Morphism.form (ProofContext.target_notation true prmode [(lhs', mx)]))))
86 fun locale_const_declaration (ta as Target {target, ...}) prmode arg =
87 locale_declaration target { syntax = true, pervasive = false } (locale_const ta prmode arg);
89 fun class_target (Target {target, ...}) f =
90 Local_Theory.raw_theory f #>
91 Local_Theory.target (Class.refresh_syntax target);
96 fun locale_foundation ta (((b, U), mx), (b_def, rhs)) (type_params, term_params) =
97 Generic_Target.theory_foundation (((b, U), NoSyn), (b_def, rhs)) (type_params, term_params)
98 #-> (fn (lhs, def) => locale_const_declaration ta Syntax.mode_default ((b, mx), lhs)
101 fun class_foundation (ta as Target {target, ...})
102 (((b, U), mx), (b_def, rhs)) (type_params, term_params) =
103 Generic_Target.theory_foundation (((b, U), NoSyn), (b_def, rhs)) (type_params, term_params)
104 #-> (fn (lhs, def) => locale_const_declaration ta Syntax.mode_default ((b, NoSyn), lhs)
105 #> class_target ta (Class.declare target ((b, mx), (type_params, lhs)))
108 fun target_foundation (ta as Target {target, is_locale, is_class, ...}) =
109 if is_class then class_foundation ta
110 else if is_locale then locale_foundation ta
111 else Generic_Target.theory_foundation;
116 fun locale_notes locale kind global_facts local_facts lthy =
118 val global_facts' = Attrib.map_facts (K I) global_facts;
119 val local_facts' = Element.facts_map
120 (Element.morph_ctxt (Local_Theory.target_morphism lthy)) local_facts;
123 |> Local_Theory.theory (PureThy.note_thmss kind global_facts' #> snd)
124 |> Local_Theory.target (Locale.add_thmss locale kind local_facts')
127 fun target_notes (ta as Target {target, is_locale, ...}) =
128 if is_locale then locale_notes target
129 else fn kind => fn global_facts => fn _ => Generic_Target.theory_notes kind global_facts;
134 fun locale_abbrev ta prmode ((b, mx), t) xs = Local_Theory.theory_result
135 (Sign.add_abbrev Print_Mode.internal (b, t)) #->
136 (fn (lhs, _) => locale_const_declaration ta prmode
137 ((b, mx), Term.list_comb (Logic.unvarify_global lhs, xs)));
139 fun target_abbrev (ta as Target {target, is_locale, is_class, ...})
140 prmode (b, mx) (global_rhs, t') xs lthy =
143 |> locale_abbrev ta prmode ((b, if is_class then NoSyn else mx), global_rhs) xs
144 |> is_class ? class_target ta (Class.abbrev target prmode ((b, mx), t'))
146 |> Generic_Target.theory_abbrev prmode ((b, mx), global_rhs);
151 fun pretty_thy ctxt target is_class =
153 val thy = ProofContext.theory_of ctxt;
155 [Pretty.command (if is_class then "class" else "locale"),
156 Pretty.str (" " ^ Locale.extern thy target)];
157 val fixes = map (fn (x, T) => (Binding.name x, SOME T, NoSyn))
158 (#1 (ProofContext.inferred_fixes ctxt));
159 val assumes = map (fn A => (Attrib.empty_binding, [(Thm.term_of A, [])]))
160 (Assumption.all_assms_of ctxt);
162 (if null fixes then [] else [Element.Fixes fixes]) @
163 (if null assumes then [] else [Element.Assumes assumes]);
165 if target = "" then []
166 else if null elems then [Pretty.block target_name]
167 else [Pretty.block (Pretty.fbreaks (Pretty.block (target_name @ [Pretty.str " ="]) ::
168 map (Pretty.chunks o Element.pretty_ctxt ctxt) elems))]
171 fun pretty (Target {target, is_class, ...}) ctxt =
172 Pretty.block [Pretty.command "theory", Pretty.brk 1,
173 Pretty.str (Context.theory_name (ProofContext.theory_of ctxt))] ::
174 pretty_thy ctxt target is_class;
181 fun init_context (Target {target, is_locale, is_class}) =
182 if not is_locale then ProofContext.init_global
183 else if not is_class then Locale.init target
184 else Class.init target;
186 fun init_target (ta as Target {target, ...}) thy =
190 |> Local_Theory.init NONE (Long_Name.base_name target)
191 {define = Generic_Target.define (target_foundation ta),
192 notes = Generic_Target.notes (target_notes ta),
193 abbrev = Generic_Target.abbrev (target_abbrev ta),
194 declaration = fn pervasive => target_declaration ta
195 { syntax = false, pervasive = pervasive },
196 syntax_declaration = fn pervasive => target_declaration ta
197 { syntax = true, pervasive = pervasive },
199 exit = Local_Theory.target_of};
203 fun init target thy = init_target (named_target thy target) thy;
205 fun context_cmd "-" thy = init NONE thy
206 | context_cmd target thy = init (SOME (Locale.intern thy target)) thy;