author | wenzelm |
Thu, 19 Mar 2009 13:28:55 +0100 | |
changeset 30585 | 6b2ba4666336 |
parent 30515 | bca05b17b618 |
child 30725 | c23a5b3cd1b9 |
permissions | -rw-r--r-- |
29361 | 1 |
(* Title: Pure/Isar/locale.ML |
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Author: Clemens Ballarin, TU Muenchen |
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Locales -- Isar proof contexts as meta-level predicates, with local |
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syntax and implicit structures. |
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Draws basic ideas from Florian Kammueller's original version of |
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locales, but uses the richer infrastructure of Isar instead of the raw |
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meta-logic. Furthermore, structured import of contexts (with merge |
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and rename operations) are provided, as well as type-inference of the |
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signature parts, and predicate definitions of the specification text. |
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Interpretation enables the reuse of theorems of locales in other |
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contexts, namely those defined by theories, structured proofs and |
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locales themselves. |
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See also: |
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[1] Clemens Ballarin. Locales and Locale Expressions in Isabelle/Isar. |
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In Stefano Berardi et al., Types for Proofs and Programs: International |
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Workshop, TYPES 2003, Torino, Italy, LNCS 3085, pages 34-50, 2004. |
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[2] Clemens Ballarin. Interpretation of Locales in Isabelle: Managing |
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Dependencies between Locales. Technical Report TUM-I0607, Technische |
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Universitaet Muenchen, 2006. |
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[3] Clemens Ballarin. Interpretation of Locales in Isabelle: Theories and |
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Proof Contexts. In J.M. Borwein and W.M. Farmer, MKM 2006, LNAI 4108, |
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pages 31-43, 2006. |
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*) |
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signature LOCALE = |
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sig |
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(* Locale specification *) |
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val register_locale: binding -> |
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(string * sort) list * (binding * typ option * mixfix) list -> |
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term option * term list -> |
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thm option * thm option -> thm list -> |
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(declaration * stamp) list * (declaration * stamp) list -> |
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((string * (Attrib.binding * (thm list * Attrib.src list) list) list) * stamp) list -> |
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((string * morphism) * stamp) list -> theory -> theory |
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val intern: theory -> xstring -> string |
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val extern: theory -> string -> xstring |
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val defined: theory -> string -> bool |
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val params_of: theory -> string -> (binding * typ option * mixfix) list |
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val intros_of: theory -> string -> thm option * thm option |
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val axioms_of: theory -> string -> thm list |
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val instance_of: theory -> string -> morphism -> term list |
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val specification_of: theory -> string -> term option * term list |
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val declarations_of: theory -> string -> declaration list * declaration list |
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val dependencies_of: theory -> string -> (string * morphism) list |
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(* Storing results *) |
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val add_thmss: string -> string -> (Attrib.binding * (thm list * Attrib.src list) list) list -> |
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Proof.context -> Proof.context |
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val add_type_syntax: string -> declaration -> Proof.context -> Proof.context |
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val add_term_syntax: string -> declaration -> Proof.context -> Proof.context |
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val add_declaration: string -> declaration -> Proof.context -> Proof.context |
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val add_dependency: string -> string * morphism -> theory -> theory |
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(* Activation *) |
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val activate_declarations: theory -> string * morphism -> |
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Proof.context -> Proof.context |
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val activate_global_facts: string * morphism -> theory -> theory |
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val activate_local_facts: string * morphism -> Proof.context -> Proof.context |
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val init: string -> theory -> Proof.context |
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(* Reasoning about locales *) |
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val witness_attrib: attribute |
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val intro_attrib: attribute |
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val unfold_attrib: attribute |
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val intro_locales_tac: bool -> Proof.context -> thm list -> tactic |
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(* Registrations *) |
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val add_registration: string * (morphism * morphism) -> |
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theory -> theory |
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val amend_registration: morphism -> string * morphism -> |
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theory -> theory |
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val get_registrations: theory -> (string * morphism) list |
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(* Diagnostic *) |
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val print_locales: theory -> unit |
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val print_locale: theory -> bool -> xstring -> unit |
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end; |
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(*** Theorem list extensible via attribute --- to control intro_locales_tac ***) |
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(* FIXME: consider moving named_thms.ML up in the build hierarchy and using that *) |
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functor ThmsFun() = |
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struct |
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structure Data = GenericDataFun |
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( |
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type T = thm list; |
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val empty = []; |
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val extend = I; |
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fun merge _ = Thm.merge_thms; |
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); |
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val get = Data.get o Context.Proof; |
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val add = Thm.declaration_attribute (Data.map o Thm.add_thm); |
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end; |
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structure Locale: LOCALE = |
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struct |
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datatype ctxt = datatype Element.ctxt; |
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(*** Theory data ***) |
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datatype locale = Loc of { |
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(** static part **) |
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parameters: (string * sort) list * (binding * typ option * mixfix) list, |
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(* type and term parameters *) |
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spec: term option * term list, |
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(* assumptions (as a single predicate expression) and defines *) |
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intros: thm option * thm option, |
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axioms: thm list, |
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(** dynamic part **) |
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decls: (declaration * stamp) list * (declaration * stamp) list, |
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(* type and term syntax declarations *) |
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notes: ((string * (Attrib.binding * (thm list * Attrib.src list) list) list) * stamp) list, |
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(* theorem declarations *) |
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dependencies: ((string * morphism) * stamp) list |
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(* locale dependencies (sublocale relation) *) |
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}; |
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fun mk_locale ((parameters, spec, intros, axioms), ((decls, notes), dependencies)) = |
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Loc {parameters = parameters, intros = intros, axioms = axioms, spec = spec, |
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decls = decls, notes = notes, dependencies = dependencies}; |
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fun map_locale f (Loc {parameters, spec, intros, axioms, decls, notes, dependencies}) = |
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mk_locale (f ((parameters, spec, intros, axioms), ((decls, notes), dependencies))); |
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fun merge_locale (Loc {parameters, spec, intros, axioms, decls = (decls1, decls2), |
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notes, dependencies}, Loc {decls = (decls1', decls2'), notes = notes', |
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dependencies = dependencies', ...}) = mk_locale |
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((parameters, spec, intros, axioms), |
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(((merge (eq_snd op =) (decls1, decls1'), merge (eq_snd op =) (decls2, decls2')), |
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merge (eq_snd op =) (notes, notes')), |
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merge (eq_snd op =) (dependencies, dependencies'))); |
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structure LocalesData = TheoryDataFun |
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( |
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type T = locale NameSpace.table; |
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val empty = NameSpace.empty_table; |
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val copy = I; |
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val extend = I; |
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fun merge _ = NameSpace.join_tables (K merge_locale); |
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); |
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val intern = NameSpace.intern o #1 o LocalesData.get; |
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val extern = NameSpace.extern o #1 o LocalesData.get; |
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fun get_locale thy = Symtab.lookup (#2 (LocalesData.get thy)); |
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fun defined thy = is_some o get_locale thy; |
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fun the_locale thy name = case get_locale thy name |
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of SOME (Loc loc) => loc |
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| NONE => error ("Unknown locale " ^ quote name); |
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10a67c5ddddb
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parents:
30223
diff
changeset
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fun register_locale binding parameters spec intros axioms decls notes dependencies thy = |
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thy |> LocalesData.map (NameSpace.define (Sign.naming_of thy) (binding, |
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mk_locale ((parameters, spec, intros, axioms), ((decls, notes), dependencies))) #> snd); |
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fun change_locale name = |
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LocalesData.map o apsnd o Symtab.map_entry name o map_locale o apsnd; |
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fun print_locales thy = |
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Pretty.strs ("locales:" :: map #1 (NameSpace.extern_table (LocalesData.get thy))) |
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|> Pretty.writeln; |
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(*** Primitive operations ***) |
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fun params_of thy = snd o #parameters o the_locale thy; |
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fun intros_of thy = #intros o the_locale thy; |
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fun axioms_of thy = #axioms o the_locale thy; |
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fun instance_of thy name morph = params_of thy name |> |
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map ((fn (b, T, _) => Free (Name.of_binding b, the T)) #> Morphism.term morph); |
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fun specification_of thy = #spec o the_locale thy; |
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fun declarations_of thy name = the_locale thy name |> |
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#decls |> apfst (map fst) |> apsnd (map fst); |
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fun dependencies_of thy name = the_locale thy name |> |
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#dependencies |> map fst; |
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(*** Activate context elements of locale ***) |
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(** Identifiers: activated locales in theory or proof context **) |
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type identifiers = (string * term list) list; |
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val empty = ([] : identifiers); |
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fun ident_eq thy ((n: string, ts), (m, ss)) = (m = n) andalso Pattern.matchess thy (ss, ts); |
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local |
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datatype 'a delayed = Ready of 'a | ToDo of ('a delayed * 'a delayed); |
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structure IdentifiersData = GenericDataFun |
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( |
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type T = identifiers delayed; |
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val empty = Ready empty; |
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val extend = I; |
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fun merge _ = ToDo; |
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); |
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in |
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fun finish thy (ToDo (i1, i2)) = merge (ident_eq thy) (finish thy i1, finish thy i2) |
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| finish _ (Ready ids) = ids; |
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val _ = Context.>> (Context.map_theory (Theory.at_begin (fn thy => |
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(case IdentifiersData.get (Context.Theory thy) of |
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Ready _ => NONE | |
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ids => SOME (Context.theory_map (IdentifiersData.put (Ready (finish thy ids))) thy)) |
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))); |
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fun get_global_idents thy = |
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let val (Ready ids) = (IdentifiersData.get o Context.Theory) thy in ids end; |
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val put_global_idents = Context.theory_map o IdentifiersData.put o Ready; |
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fun get_local_idents ctxt = |
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let val (Ready ids) = (IdentifiersData.get o Context.Proof) ctxt in ids end; |
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val put_local_idents = Context.proof_map o IdentifiersData.put o Ready; |
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end; |
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(** Resolve locale dependencies in a depth-first fashion **) |
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local |
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val roundup_bound = 120; |
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fun add thy depth (name, morph) (deps, marked) = |
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if depth > roundup_bound |
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then error "Roundup bound exceeded (sublocale relation probably not terminating)." |
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else |
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let |
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val {parameters = (_, params), dependencies, ...} = the_locale thy name; |
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val instance = instance_of thy name morph; |
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in |
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if member (ident_eq thy) marked (name, instance) |
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then (deps, marked) |
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else |
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let |
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val dependencies' = |
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map (fn ((name, morph'), _) => (name, morph' $> morph)) dependencies; |
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val marked' = (name, instance) :: marked; |
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val (deps', marked'') = fold_rev (add thy (depth + 1)) dependencies' ([], marked'); |
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in |
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((name, morph) :: deps' @ deps, marked'') |
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end |
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end; |
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in |
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fun roundup thy activate_dep (name, morph) (marked, input) = |
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let |
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(* Find all dependencies incuding new ones (which are dependencies enriching |
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existing registrations). *) |
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val (dependencies, marked') = add thy 0 (name, morph) ([], empty); |
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(* Filter out exisiting fragments. *) |
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val dependencies' = filter_out (fn (name, morph) => |
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member (ident_eq thy) marked (name, instance_of thy name morph)) dependencies; |
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in |
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(merge (ident_eq thy) (marked, marked'), input |> fold_rev (activate_dep thy) dependencies') |
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end; |
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end; |
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(* Declarations, facts and entire locale content *) |
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fun activate_decls thy (name, morph) ctxt = |
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let |
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val {decls = (typ_decls, term_decls), ...} = the_locale thy name; |
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in |
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ctxt |> fold_rev (fn (decl, _) => Context.proof_map (decl morph)) typ_decls |> |
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fold_rev (fn (decl, _) => Context.proof_map (decl morph)) term_decls |
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end; |
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fun activate_notes activ_elem transfer thy (name, morph) input = |
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let |
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val {notes, ...} = the_locale thy name; |
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fun activate ((kind, facts), _) input = |
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let |
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val facts' = facts |> Element.facts_map (Element.morph_ctxt (transfer input $> morph)) |
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in activ_elem (Notes (kind, facts')) input end; |
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in |
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fold_rev activate notes input |
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end; |
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fun activate_all name thy activ_elem transfer (marked, input) = |
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let |
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val {parameters = (_, params), spec = (asm, defs), ...} = |
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the_locale thy name; |
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in |
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input |> |
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(if not (null params) then activ_elem (Fixes params) else I) |> |
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(* FIXME type parameters *) |
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(if is_some asm then activ_elem (Assumes [(Attrib.empty_binding, [(the asm, [])])]) else I) |> |
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(if not (null defs) |
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then activ_elem (Defines (map (fn def => (Attrib.empty_binding, (def, []))) defs)) |
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else I) |> |
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pair marked |> roundup thy (activate_notes activ_elem transfer) (name, Morphism.identity) |
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end; |
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(** Public activation functions **) |
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local |
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fun init_global_elem (Notes (kind, facts)) thy = |
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let |
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val facts' = Attrib.map_facts (Attrib.attribute_i thy) facts |
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30438
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eliminated qualified_names naming policy: qualified names are only permitted via explicit Binding.qualify/qualified_name etc. (NB: user-level outer syntax should never do this);
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parents:
30344
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changeset
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in PureThy.note_thmss kind facts' thy |> snd end |
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fun init_local_elem (Fixes fixes) ctxt = ctxt |> |
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ProofContext.add_fixes_i fixes |> snd |
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| init_local_elem (Assumes assms) ctxt = |
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let |
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val assms' = Attrib.map_specs (Attrib.attribute_i (ProofContext.theory_of ctxt)) assms |
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in |
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ctxt |> fold Variable.auto_fixes (maps (map fst o snd) assms') |> |
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ProofContext.add_assms_i Assumption.assume_export assms' |> snd |
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end |
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| init_local_elem (Defines defs) ctxt = |
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let |
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val defs' = Attrib.map_specs (Attrib.attribute_i (ProofContext.theory_of ctxt)) defs |
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in |
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ctxt |> fold Variable.auto_fixes (map (fst o snd) defs') |> |
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ProofContext.add_assms_i LocalDefs.def_export (map (fn (attn, t) => (attn, [t])) defs') |> |
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snd |
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end |
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| init_local_elem (Notes (kind, facts)) ctxt = |
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let |
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val facts' = Attrib.map_facts (Attrib.attribute_i (ProofContext.theory_of ctxt)) facts |
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30438
c2d49315b93b
eliminated qualified_names naming policy: qualified names are only permitted via explicit Binding.qualify/qualified_name etc. (NB: user-level outer syntax should never do this);
wenzelm
parents:
30344
diff
changeset
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in ProofContext.note_thmss_i kind facts' ctxt |> snd end |
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fun cons_elem false (Notes notes) elems = elems |
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| cons_elem _ elem elems = elem :: elems |
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in |
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fun activate_declarations thy dep ctxt = |
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roundup thy activate_decls dep (get_local_idents ctxt, ctxt) |-> put_local_idents; |
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fun activate_global_facts dep thy = |
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roundup thy (activate_notes init_global_elem Element.transfer_morphism) |
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dep (get_global_idents thy, thy) |-> put_global_idents; |
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fun activate_local_facts dep ctxt = |
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roundup (ProofContext.theory_of ctxt) |
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(activate_notes init_local_elem (Element.transfer_morphism o ProofContext.theory_of)) dep |
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(get_local_idents ctxt, ctxt) |-> put_local_idents; |
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fun init name thy = |
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activate_all name thy init_local_elem (Element.transfer_morphism o ProofContext.theory_of) |
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(empty, ProofContext.init thy) |-> put_local_idents; |
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fun print_locale thy show_facts name = |
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let |
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val name' = intern thy name; |
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val ctxt = init name' thy |
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in |
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Pretty.big_list "locale elements:" |
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(activate_all name' thy (cons_elem show_facts) (K (Element.transfer_morphism thy)) |
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(empty, []) |> snd |> rev |> |
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map (Element.pretty_ctxt ctxt) |> map Pretty.chunks) |> Pretty.writeln |
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end |
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end; |
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(*** Registrations: interpretations in theories ***) |
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structure RegistrationsData = TheoryDataFun |
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( |
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type T = ((string * (morphism * morphism)) * stamp) list; |
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(* FIXME mixins need to be stamped *) |
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(* registrations, in reverse order of declaration *) |
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val empty = []; |
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val extend = I; |
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val copy = I; |
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fun merge _ data : T = Library.merge (eq_snd op =) data; |
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(* FIXME consolidate with dependencies, consider one data slot only *) |
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); |
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val get_registrations = |
401 |
RegistrationsData.get #> map fst #> map (apsnd op $>); |
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fun add_registration (name, (base_morph, export)) thy = |
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roundup thy (fn _ => fn (name', morph') => |
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(RegistrationsData.map o cons) ((name', (morph', export)), stamp ())) |
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(name, base_morph) (get_global_idents thy, thy) |> snd |
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(* FIXME |-> put_global_idents ?*); |
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|
29392 | 409 |
fun amend_registration morph (name, base_morph) thy = |
29361 | 410 |
let |
29392 | 411 |
val regs = (RegistrationsData.get #> map fst) thy; |
29361 | 412 |
val base = instance_of thy name base_morph; |
413 |
fun match (name', (morph', _)) = |
|
414 |
name = name' andalso eq_list (op aconv) (base, instance_of thy name' morph'); |
|
415 |
val i = find_index match (rev regs); |
|
29392 | 416 |
val _ = if i = ~1 then error ("No registration of locale " ^ |
29361 | 417 |
quote (extern thy name) ^ " and parameter instantiation " ^ |
418 |
space_implode " " (map (quote o Syntax.string_of_term_global thy) base) ^ " available.") |
|
419 |
else (); |
|
420 |
in |
|
29392 | 421 |
RegistrationsData.map (nth_map (length regs - 1 - i) |
29361 | 422 |
(fn ((name, (base, export)), stamp) => ((name, (base $> morph, export)), stamp))) thy |
423 |
end; |
|
424 |
||
425 |
||
29502 | 426 |
|
29361 | 427 |
(*** Storing results ***) |
428 |
||
429 |
(* Theorems *) |
|
430 |
||
431 |
fun add_thmss loc kind args ctxt = |
|
432 |
let |
|
433 |
val ([Notes args'], ctxt') = Element.activate_i [Notes (kind, args)] ctxt; |
|
434 |
val ctxt'' = ctxt' |> ProofContext.theory ( |
|
29392 | 435 |
(change_locale loc o apfst o apsnd) (cons (args', stamp ())) |
436 |
#> |
|
29361 | 437 |
(* Registrations *) |
438 |
(fn thy => fold_rev (fn (name, morph) => |
|
439 |
let |
|
440 |
val args'' = snd args' |> Element.facts_map (Element.morph_ctxt morph) |> |
|
441 |
Attrib.map_facts (Attrib.attribute_i thy) |
|
30438
c2d49315b93b
eliminated qualified_names naming policy: qualified names are only permitted via explicit Binding.qualify/qualified_name etc. (NB: user-level outer syntax should never do this);
wenzelm
parents:
30344
diff
changeset
|
442 |
in PureThy.note_thmss kind args'' #> snd end) |
29392 | 443 |
(get_registrations thy |> filter (fn (name, _) => name = loc)) thy)) |
29361 | 444 |
in ctxt'' end; |
445 |
||
446 |
||
447 |
(* Declarations *) |
|
448 |
||
449 |
local |
|
450 |
||
451 |
fun decl_attrib decl phi = Thm.declaration_attribute (K (decl phi)); |
|
452 |
||
453 |
fun add_decls add loc decl = |
|
30223
24d975352879
renamed Binding.name_pos to Binding.make, renamed Binding.base_name to Binding.name_of, renamed Binding.map_base to Binding.map_name, added mandatory flag to Binding.qualify;
wenzelm
parents:
29576
diff
changeset
|
454 |
ProofContext.theory ((change_locale loc o apfst o apfst) (add (decl, stamp ()))) #> |
29361 | 455 |
add_thmss loc Thm.internalK |
456 |
[((Binding.empty, [Attrib.internal (decl_attrib decl)]), [([Drule.dummy_thm], [])])]; |
|
457 |
||
458 |
in |
|
459 |
||
460 |
val add_type_syntax = add_decls (apfst o cons); |
|
461 |
val add_term_syntax = add_decls (apsnd o cons); |
|
462 |
val add_declaration = add_decls (K I); |
|
463 |
||
464 |
end; |
|
465 |
||
466 |
(* Dependencies *) |
|
467 |
||
29392 | 468 |
fun add_dependency loc dep = (change_locale loc o apsnd) (cons (dep, stamp ())); |
29361 | 469 |
|
470 |
||
471 |
(*** Reasoning about locales ***) |
|
472 |
||
473 |
(** Storage for witnesses, intro and unfold rules **) |
|
474 |
||
475 |
structure Witnesses = ThmsFun(); |
|
476 |
structure Intros = ThmsFun(); |
|
477 |
structure Unfolds = ThmsFun(); |
|
478 |
||
479 |
val witness_attrib = Witnesses.add; |
|
480 |
val intro_attrib = Intros.add; |
|
481 |
val unfold_attrib = Unfolds.add; |
|
482 |
||
483 |
(** Tactic **) |
|
484 |
||
485 |
fun intro_locales_tac eager ctxt facts st = |
|
486 |
Method.intros_tac |
|
487 |
(Witnesses.get ctxt @ Intros.get ctxt @ (if eager then Unfolds.get ctxt else [])) facts st; |
|
488 |
||
489 |
val _ = Context.>> (Context.map_theory |
|
30515 | 490 |
(Method.setup (Binding.name "intro_locales") (Scan.succeed (METHOD o intro_locales_tac false)) |
491 |
"back-chain introduction rules of locales without unfolding predicates" #> |
|
492 |
Method.setup (Binding.name "unfold_locales") (Scan.succeed (METHOD o intro_locales_tac true)) |
|
493 |
"back-chain all introduction rules of locales")); |
|
29361 | 494 |
|
495 |
end; |
|
496 |