haftmann@28308
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(* Title: HOL/Statespace/state_space.ML
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Author: Norbert Schirmer, TU Muenchen
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*)
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signature STATE_SPACE =
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sig
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val KN : string
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val distinct_compsN : string
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val getN : string
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val putN : string
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val injectN : string
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val namespaceN : string
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val projectN : string
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val valuetypesN : string
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val namespace_definition :
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bstring ->
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typ ->
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Expression.expression ->
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string list -> string list -> theory -> theory
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val define_statespace :
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string list ->
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string ->
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(string list * bstring * (string * string) list) list ->
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(string * string) list -> theory -> theory
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val define_statespace_i :
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string option ->
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string list ->
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string ->
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(typ list * bstring * (string * string) list) list ->
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(string * typ) list -> theory -> theory
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val statespace_decl :
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((string list * bstring) *
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((string list * xstring * (bstring * bstring) list) list *
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(bstring * string) list)) parser
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val neq_x_y : Proof.context -> term -> term -> thm option
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val distinctNameSolver : Simplifier.solver
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val distinctTree_tac : Proof.context -> int -> tactic
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val distinct_simproc : Simplifier.simproc
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val get_comp : Context.generic -> string -> (typ * string) Option.option
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val get_silent : Context.generic -> bool
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val set_silent : bool -> Context.generic -> Context.generic
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val gen_lookup_tr : Proof.context -> term -> string -> term
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val lookup_swap_tr : Proof.context -> term list -> term
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val lookup_tr : Proof.context -> term list -> term
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val lookup_tr' : Proof.context -> term list -> term
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val gen_update_tr :
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bool -> Proof.context -> string -> term -> term -> term
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val update_tr : Proof.context -> term list -> term
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val update_tr' : Proof.context -> term list -> term
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end;
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structure StateSpace : STATE_SPACE =
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struct
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(* Theorems *)
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(* Names *)
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val distinct_compsN = "distinct_names"
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val namespaceN = "_namespace"
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val valuetypesN = "_valuetypes"
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val projectN = "project"
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val injectN = "inject"
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val getN = "get"
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val putN = "put"
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val project_injectL = "StateSpaceLocale.project_inject";
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val KN = "StateFun.K_statefun"
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(* Library *)
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fun fold1 f xs = fold f (tl xs) (hd xs)
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fun fold1' f [] x = x
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| fold1' f xs _ = fold1 f xs
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fun sublist_idx eq xs ys =
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let
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fun sublist n xs ys =
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if is_prefix eq xs ys then SOME n
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else (case ys of [] => NONE
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| (y::ys') => sublist (n+1) xs ys')
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in sublist 0 xs ys end;
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fun is_sublist eq xs ys = is_some (sublist_idx eq xs ys);
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fun sorted_subset eq [] ys = true
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| sorted_subset eq (x::xs) [] = false
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| sorted_subset eq (x::xs) (y::ys) = if eq (x,y) then sorted_subset eq xs ys
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else sorted_subset eq (x::xs) ys;
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type namespace_info =
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{declinfo: (typ*string) Termtab.table, (* type, name of statespace *)
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distinctthm: thm Symtab.table,
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silent: bool
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};
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structure NameSpaceData = Generic_Data
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(
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type T = namespace_info;
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val empty = {declinfo = Termtab.empty, distinctthm = Symtab.empty, silent = false};
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val extend = I;
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fun merge
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({declinfo=declinfo1, distinctthm=distinctthm1, silent=silent1},
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{declinfo=declinfo2, distinctthm=distinctthm2, silent=silent2}) : T =
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{declinfo = Termtab.merge (K true) (declinfo1, declinfo2),
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distinctthm = Symtab.merge (K true) (distinctthm1, distinctthm2),
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silent = silent1 andalso silent2 (* FIXME odd merge *)}
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);
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fun make_namespace_data declinfo distinctthm silent =
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{declinfo=declinfo,distinctthm=distinctthm,silent=silent};
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fun delete_declinfo n ctxt =
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let val {declinfo,distinctthm,silent} = NameSpaceData.get ctxt;
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in NameSpaceData.put
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(make_namespace_data (Termtab.delete_safe n declinfo) distinctthm silent) ctxt
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end;
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fun update_declinfo (n,v) ctxt =
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let val {declinfo,distinctthm,silent} = NameSpaceData.get ctxt;
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in NameSpaceData.put
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(make_namespace_data (Termtab.update (n,v) declinfo) distinctthm silent) ctxt
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end;
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fun set_silent silent ctxt =
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let val {declinfo,distinctthm,...} = NameSpaceData.get ctxt;
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in NameSpaceData.put
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(make_namespace_data declinfo distinctthm silent) ctxt
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end;
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val get_silent = #silent o NameSpaceData.get;
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fun prove_interpretation_in ctxt_tac (name, expr) thy =
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thy
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|> Expression.sublocale_cmd I name expr []
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|> Proof.global_terminal_proof
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(Method.Basic (fn ctxt => SIMPLE_METHOD (ctxt_tac ctxt)), NONE)
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|> Proof_Context.theory_of
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fun add_locale name expr elems thy =
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thy
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|> Expression.add_locale I (Binding.name name) (Binding.name name) expr elems
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|> snd
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|> Local_Theory.exit;
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fun add_locale_cmd name expr elems thy =
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thy
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|> Expression.add_locale_cmd I (Binding.name name) Binding.empty expr elems
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|> snd
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|> Local_Theory.exit;
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type statespace_info =
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{args: (string * sort) list, (* type arguments *)
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parents: (typ list * string * string option list) list,
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(* type instantiation, state-space name, component renamings *)
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components: (string * typ) list,
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types: typ list (* range types of state space *)
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};
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structure StateSpaceData = Generic_Data
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(
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type T = statespace_info Symtab.table;
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val empty = Symtab.empty;
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val extend = I;
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fun merge data : T = Symtab.merge (K true) data;
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);
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fun add_statespace name args parents components types ctxt =
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StateSpaceData.put
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(Symtab.update_new (name, {args=args,parents=parents,
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components=components,types=types}) (StateSpaceData.get ctxt))
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ctxt;
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fun get_statespace ctxt name =
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Symtab.lookup (StateSpaceData.get ctxt) name;
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fun mk_free ctxt name =
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if Variable.is_fixed ctxt name orelse Variable.is_declared ctxt name
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then
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let val n' = Variable.intern_fixed ctxt name
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in SOME (Free (n', Proof_Context.infer_type ctxt (n', dummyT))) end
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else NONE
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fun get_dist_thm ctxt name = Symtab.lookup (#distinctthm (NameSpaceData.get ctxt)) name;
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fun get_comp ctxt name =
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Option.mapPartial
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(Termtab.lookup (#declinfo (NameSpaceData.get ctxt)))
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(mk_free (Context.proof_of ctxt) name);
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(*** Tactics ***)
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fun neq_x_y ctxt x y =
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(let
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val dist_thm = the (get_dist_thm (Context.Proof ctxt) (#1 (dest_Free x)));
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val ctree = cprop_of dist_thm |> Thm.dest_comb |> #2 |> Thm.dest_comb |> #2;
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val tree = term_of ctree;
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val x_path = the (DistinctTreeProver.find_tree x tree);
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val y_path = the (DistinctTreeProver.find_tree y tree);
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val thm = DistinctTreeProver.distinctTreeProver dist_thm x_path y_path;
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in SOME thm
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end handle Option => NONE)
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fun distinctTree_tac ctxt = SUBGOAL (fn (goal, i) =>
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(case goal of
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Const (@{const_name Trueprop}, _) $
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(Const (@{const_name Not}, _) $
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(Const (@{const_name HOL.eq}, _) $ (x as Free _) $ (y as Free _))) =>
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(case neq_x_y ctxt x y of
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SOME neq => rtac neq i
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| NONE => no_tac)
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| _ => no_tac));
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val distinctNameSolver = mk_solver' "distinctNameSolver"
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(fn ss => case try Simplifier.the_context ss of
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SOME ctxt => distinctTree_tac ctxt
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| NONE => K no_tac)
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val distinct_simproc =
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Simplifier.simproc_global @{theory HOL} "StateSpace.distinct_simproc" ["x = y"]
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(fn thy => fn ss => (fn (Const (@{const_name HOL.eq},_)$(x as Free _)$(y as Free _)) =>
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(case try Simplifier.the_context ss of
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SOME ctxt => Option.map (fn neq => DistinctTreeProver.neq_to_eq_False OF [neq])
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(neq_x_y ctxt x y)
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| NONE => NONE)
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| _ => NONE))
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local
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val ss = HOL_basic_ss
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in
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fun interprete_parent name dist_thm_name parent_expr thy =
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let
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fun solve_tac ctxt = CSUBGOAL (fn (goal, i) =>
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let
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val distinct_thm = Proof_Context.get_thm ctxt dist_thm_name;
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val rule = DistinctTreeProver.distinct_implProver distinct_thm goal;
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in rtac rule i end);
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fun tac ctxt =
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Locale.intro_locales_tac true ctxt [] THEN ALLGOALS (solve_tac ctxt);
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in thy
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|> prove_interpretation_in tac (name,parent_expr)
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end;
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end;
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fun namespace_definition name nameT parent_expr parent_comps new_comps thy =
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let
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val all_comps = parent_comps @ new_comps;
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val vars = (map (fn n => (Binding.name n, NONE, NoSyn)) all_comps);
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val full_name = Sign.full_bname thy name;
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val dist_thm_name = distinct_compsN;
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val dist_thm_full_name = dist_thm_name;
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fun comps_of_thm thm = prop_of thm
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|> (fn (_$(_$t)) => DistinctTreeProver.dest_tree t) |> map (fst o dest_Free);
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fun type_attr phi = Thm.declaration_attribute (fn thm => fn context =>
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(case context of
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Context.Theory _ => context
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| Context.Proof ctxt =>
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let
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val {declinfo,distinctthm=tt,silent} = NameSpaceData.get context;
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val all_names = comps_of_thm thm;
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fun upd name tt =
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wenzelm@39081
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(case Symtab.lookup tt name of
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SOME dthm => if sorted_subset (op =) (comps_of_thm dthm) all_names
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then Symtab.update (name,thm) tt else tt
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| NONE => Symtab.update (name,thm) tt)
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286 |
|
schirmer@25171
|
287 |
val tt' = tt |> fold upd all_names;
|
schirmer@25171
|
288 |
val activate_simproc =
|
wenzelm@39081
|
289 |
Simplifier.map_ss
|
wenzelm@39081
|
290 |
(Simplifier.with_context (Context_Position.set_visible false ctxt)
|
wenzelm@39081
|
291 |
(fn ss => ss addsimprocs [distinct_simproc]));
|
wenzelm@39081
|
292 |
val context' =
|
wenzelm@39081
|
293 |
context
|
schirmer@25171
|
294 |
|> NameSpaceData.put {declinfo=declinfo,distinctthm=tt',silent=silent}
|
wenzelm@39081
|
295 |
|> activate_simproc;
|
wenzelm@39081
|
296 |
in context' end));
|
wenzelm@26478
|
297 |
|
schirmer@25171
|
298 |
val attr = Attrib.internal type_attr;
|
schirmer@25171
|
299 |
|
haftmann@28965
|
300 |
val assumes = Element.Assumes [((Binding.name dist_thm_name,[attr]),
|
schirmer@25171
|
301 |
[(HOLogic.Trueprop $
|
schirmer@25171
|
302 |
(Const ("DistinctTreeProver.all_distinct",
|
schirmer@25171
|
303 |
Type ("DistinctTreeProver.tree",[nameT]) --> HOLogic.boolT) $
|
wenzelm@26478
|
304 |
DistinctTreeProver.mk_tree (fn n => Free (n,nameT)) nameT
|
schirmer@25171
|
305 |
(sort fast_string_ord all_comps)),
|
schirmer@25171
|
306 |
([]))])];
|
wenzelm@26478
|
307 |
in thy
|
norbert@29247
|
308 |
|> add_locale name ([],vars) [assumes]
|
wenzelm@43232
|
309 |
|> Proof_Context.theory_of
|
norbert@29247
|
310 |
|> interprete_parent name dist_thm_full_name parent_expr
|
schirmer@25171
|
311 |
end;
|
schirmer@25171
|
312 |
|
hoelzl@32651
|
313 |
fun encode_dot x = if x= #"." then #"_" else x;
|
schirmer@25171
|
314 |
|
schirmer@25171
|
315 |
fun encode_type (TFree (s, _)) = s
|
schirmer@25171
|
316 |
| encode_type (TVar ((s,i),_)) = "?" ^ s ^ string_of_int i
|
wenzelm@26478
|
317 |
| encode_type (Type (n,Ts)) =
|
schirmer@25171
|
318 |
let
|
schirmer@25171
|
319 |
val Ts' = fold1' (fn x => fn y => x ^ "_" ^ y) (map encode_type Ts) "";
|
hoelzl@32651
|
320 |
val n' = String.map encode_dot n;
|
schirmer@25171
|
321 |
in if Ts'="" then n' else Ts' ^ "_" ^ n' end;
|
schirmer@25171
|
322 |
|
schirmer@25171
|
323 |
fun project_name T = projectN ^"_"^encode_type T;
|
schirmer@25171
|
324 |
fun inject_name T = injectN ^"_"^encode_type T;
|
schirmer@25171
|
325 |
|
schirmer@25171
|
326 |
fun project_free T pT V = Free (project_name T, V --> pT);
|
schirmer@25171
|
327 |
fun inject_free T pT V = Free (inject_name T, pT --> V);
|
schirmer@25171
|
328 |
|
schirmer@25171
|
329 |
fun get_name n = getN ^ "_" ^ n;
|
schirmer@25171
|
330 |
fun put_name n = putN ^ "_" ^ n;
|
schirmer@25171
|
331 |
fun get_const n T nT V = Free (get_name n, (nT --> V) --> T);
|
schirmer@25171
|
332 |
fun put_const n T nT V = Free (put_name n, T --> (nT --> V) --> (nT --> V));
|
schirmer@25171
|
333 |
|
schirmer@25171
|
334 |
fun lookup_const T nT V = Const ("StateFun.lookup",(V --> T) --> nT --> (nT --> V) --> T);
|
wenzelm@26478
|
335 |
fun update_const T nT V =
|
schirmer@25171
|
336 |
Const ("StateFun.update",
|
schirmer@25171
|
337 |
(V --> T) --> (T --> V) --> nT --> (T --> T) --> (nT --> V) --> (nT --> V));
|
schirmer@25171
|
338 |
|
schirmer@25171
|
339 |
fun K_const T = Const ("StateFun.K_statefun",T --> T --> T);
|
schirmer@25171
|
340 |
|
schirmer@25171
|
341 |
|
schirmer@25171
|
342 |
fun add_declaration name decl thy =
|
schirmer@25171
|
343 |
thy
|
wenzelm@41833
|
344 |
|> Named_Target.init I name
|
wenzelm@33673
|
345 |
|> (fn lthy => Local_Theory.declaration false (decl lthy) lthy)
|
wenzelm@33673
|
346 |
|> Local_Theory.exit_global;
|
schirmer@25171
|
347 |
|
schirmer@25171
|
348 |
fun parent_components thy (Ts, pname, renaming) =
|
schirmer@25171
|
349 |
let
|
schirmer@25171
|
350 |
val ctxt = Context.Theory thy;
|
schirmer@25171
|
351 |
fun rename [] xs = xs
|
schirmer@25171
|
352 |
| rename (NONE::rs) (x::xs) = x::rename rs xs
|
schirmer@25171
|
353 |
| rename (SOME r::rs) ((x,T)::xs) = (r,T)::rename rs xs;
|
wenzelm@26478
|
354 |
val {args,parents,components,...} =
|
wenzelm@32962
|
355 |
the (Symtab.lookup (StateSpaceData.get ctxt) pname);
|
schirmer@25171
|
356 |
val inst = map fst args ~~ Ts;
|
schirmer@25171
|
357 |
val subst = Term.map_type_tfree (the o AList.lookup (op =) inst o fst);
|
wenzelm@26478
|
358 |
val parent_comps =
|
wenzelm@32952
|
359 |
maps (fn (Ts',n,rs) => parent_components thy (map subst Ts',n,rs)) parents;
|
schirmer@25171
|
360 |
val all_comps = rename renaming (parent_comps @ map (apsnd subst) components);
|
schirmer@25171
|
361 |
in all_comps end;
|
schirmer@25171
|
362 |
|
wenzelm@44158
|
363 |
fun take_upto i xs = List.take(xs,i) handle General.Subscript => xs;
|
schirmer@25171
|
364 |
|
schirmer@25171
|
365 |
fun statespace_definition state_type args name parents parent_comps components thy =
|
wenzelm@26478
|
366 |
let
|
haftmann@28965
|
367 |
val full_name = Sign.full_bname thy name;
|
schirmer@25171
|
368 |
val all_comps = parent_comps @ components;
|
schirmer@25171
|
369 |
|
schirmer@25171
|
370 |
val components' = map (fn (n,T) => (n,(T,full_name))) components;
|
wenzelm@26478
|
371 |
val all_comps' = map (fn (n,T) => (n,(T,full_name))) all_comps;
|
schirmer@25171
|
372 |
|
norbert@29247
|
373 |
fun parent_expr (_,n,rs) = (suffix namespaceN n,((n,false),Expression.Positional rs));
|
norbert@29247
|
374 |
(* FIXME: a more specific renaming-prefix (including parameter names) may be nicer *)
|
norbert@29247
|
375 |
val parents_expr = map parent_expr parents;
|
schirmer@25171
|
376 |
fun distinct_types Ts =
|
wenzelm@27276
|
377 |
let val tab = fold (fn T => fn tab => Typtab.update (T,()) tab) Ts Typtab.empty;
|
wenzelm@27276
|
378 |
in map fst (Typtab.dest tab) end;
|
schirmer@25171
|
379 |
|
schirmer@25171
|
380 |
val Ts = distinct_types (map snd all_comps);
|
schirmer@25171
|
381 |
val arg_names = map fst args;
|
wenzelm@44206
|
382 |
val valueN = singleton (Name.variant_list arg_names) "'value";
|
wenzelm@44206
|
383 |
val nameN = singleton (Name.variant_list (valueN :: arg_names)) "'name";
|
schirmer@25171
|
384 |
val valueT = TFree (valueN, Sign.defaultS thy);
|
schirmer@25171
|
385 |
val nameT = TFree (nameN, Sign.defaultS thy);
|
schirmer@25171
|
386 |
val stateT = nameT --> valueT;
|
schirmer@25171
|
387 |
fun projectT T = valueT --> T;
|
wenzelm@26478
|
388 |
fun injectT T = T --> valueT;
|
norbert@29247
|
389 |
val locinsts = map (fn T => (project_injectL,
|
norbert@29247
|
390 |
(("",false),Expression.Positional
|
norbert@29247
|
391 |
[SOME (Free (project_name T,projectT T)),
|
norbert@29247
|
392 |
SOME (Free ((inject_name T,injectT T)))]))) Ts;
|
wenzelm@32952
|
393 |
val locs = maps (fn T => [(Binding.name (project_name T),NONE,NoSyn),
|
wenzelm@32952
|
394 |
(Binding.name (inject_name T),NONE,NoSyn)]) Ts;
|
wenzelm@32952
|
395 |
val constrains = maps (fn T => [(project_name T,projectT T),(inject_name T,injectT T)]) Ts;
|
schirmer@25171
|
396 |
|
norbert@29247
|
397 |
fun interprete_parent_valuetypes (Ts, pname, _) thy =
|
schirmer@25171
|
398 |
let
|
wenzelm@26478
|
399 |
val {args,types,...} =
|
schirmer@25171
|
400 |
the (Symtab.lookup (StateSpaceData.get (Context.Theory thy)) pname);
|
schirmer@25171
|
401 |
val inst = map fst args ~~ Ts;
|
schirmer@25171
|
402 |
val subst = Term.map_type_tfree (the o AList.lookup (op =) inst o fst);
|
wenzelm@32952
|
403 |
val pars = maps ((fn T => [project_name T,inject_name T]) o subst) types;
|
norbert@29247
|
404 |
|
norbert@29247
|
405 |
val expr = ([(suffix valuetypesN name,
|
norbert@29247
|
406 |
(("",false),Expression.Positional (map SOME pars)))],[]);
|
wenzelm@29291
|
407 |
in
|
wenzelm@30479
|
408 |
prove_interpretation_in (ALLGOALS o solve_tac o Assumption.all_prems_of)
|
wenzelm@29291
|
409 |
(suffix valuetypesN name, expr) thy
|
wenzelm@29291
|
410 |
end;
|
schirmer@25171
|
411 |
|
schirmer@25171
|
412 |
fun interprete_parent (_, pname, rs) =
|
schirmer@25171
|
413 |
let
|
norbert@29247
|
414 |
val expr = ([(pname, (("",false), Expression.Positional rs))],[])
|
wenzelm@26478
|
415 |
in prove_interpretation_in
|
haftmann@29360
|
416 |
(fn ctxt => Locale.intro_locales_tac false ctxt [])
|
schirmer@25171
|
417 |
(full_name, expr) end;
|
schirmer@25171
|
418 |
|
schirmer@25171
|
419 |
fun declare_declinfo updates lthy phi ctxt =
|
schirmer@25171
|
420 |
let
|
wenzelm@26478
|
421 |
fun upd_prf ctxt =
|
schirmer@25171
|
422 |
let
|
schirmer@25171
|
423 |
fun upd (n,v) =
|
schirmer@25171
|
424 |
let
|
wenzelm@43232
|
425 |
val nT = Proof_Context.infer_type (Local_Theory.target_of lthy) (n, dummyT)
|
wenzelm@26478
|
426 |
in Context.proof_map
|
wenzelm@26478
|
427 |
(update_declinfo (Morphism.term phi (Free (n,nT)),v))
|
schirmer@25171
|
428 |
end;
|
schirmer@25171
|
429 |
in ctxt |> fold upd updates end;
|
schirmer@25171
|
430 |
|
schirmer@25171
|
431 |
in Context.mapping I upd_prf ctxt end;
|
schirmer@25171
|
432 |
|
wenzelm@26478
|
433 |
fun string_of_typ T =
|
wenzelm@39393
|
434 |
Print_Mode.setmp []
|
wenzelm@39393
|
435 |
(Syntax.string_of_typ (Config.put show_sorts true (Syntax.init_pretty_global thy))) T;
|
schirmer@25171
|
436 |
val fixestate = (case state_type of
|
schirmer@25171
|
437 |
NONE => []
|
wenzelm@26478
|
438 |
| SOME s =>
|
wenzelm@26478
|
439 |
let
|
wenzelm@32962
|
440 |
val fx = Element.Fixes [(Binding.name s,SOME (string_of_typ stateT),NoSyn)];
|
wenzelm@26478
|
441 |
val cs = Element.Constrains
|
schirmer@25171
|
442 |
(map (fn (n,T) => (n,string_of_typ T))
|
schirmer@25171
|
443 |
((map (fn (n,_) => (n,nameT)) all_comps) @
|
schirmer@25171
|
444 |
constrains))
|
schirmer@25171
|
445 |
in [fx,cs] end
|
schirmer@25171
|
446 |
)
|
schirmer@25171
|
447 |
|
wenzelm@26478
|
448 |
|
wenzelm@26478
|
449 |
in thy
|
wenzelm@26478
|
450 |
|> namespace_definition
|
norbert@29247
|
451 |
(suffix namespaceN name) nameT (parents_expr,[])
|
schirmer@25171
|
452 |
(map fst parent_comps) (map fst components)
|
schirmer@25171
|
453 |
|> Context.theory_map (add_statespace full_name args parents components [])
|
norbert@29247
|
454 |
|> add_locale (suffix valuetypesN name) (locinsts,locs) []
|
wenzelm@43232
|
455 |
|> Proof_Context.theory_of
|
wenzelm@26478
|
456 |
|> fold interprete_parent_valuetypes parents
|
norbert@29247
|
457 |
|> add_locale_cmd name
|
norbert@29247
|
458 |
([(suffix namespaceN full_name ,(("",false),Expression.Named [])),
|
norbert@29247
|
459 |
(suffix valuetypesN full_name,(("",false),Expression.Named []))],[]) fixestate
|
wenzelm@43232
|
460 |
|> Proof_Context.theory_of
|
schirmer@25171
|
461 |
|> fold interprete_parent parents
|
haftmann@38615
|
462 |
|> add_declaration full_name (declare_declinfo components')
|
schirmer@25171
|
463 |
end;
|
schirmer@25171
|
464 |
|
schirmer@25171
|
465 |
|
schirmer@25171
|
466 |
(* prepare arguments *)
|
schirmer@25171
|
467 |
|
wenzelm@27283
|
468 |
fun read_raw_parent ctxt raw_T =
|
wenzelm@43232
|
469 |
(case Proof_Context.read_typ_abbrev ctxt raw_T of
|
schirmer@25171
|
470 |
Type (name, Ts) => (Ts, name)
|
wenzelm@27283
|
471 |
| T => error ("Bad parent statespace specification: " ^ Syntax.string_of_typ ctxt T));
|
schirmer@25171
|
472 |
|
wenzelm@36150
|
473 |
fun read_typ ctxt raw_T env =
|
wenzelm@36150
|
474 |
let
|
wenzelm@36150
|
475 |
val ctxt' = fold (Variable.declare_typ o TFree) env ctxt;
|
wenzelm@36150
|
476 |
val T = Syntax.read_typ ctxt' raw_T;
|
wenzelm@36150
|
477 |
val env' = OldTerm.add_typ_tfrees (T, env);
|
wenzelm@36150
|
478 |
in (T, env') end;
|
wenzelm@36150
|
479 |
|
wenzelm@36150
|
480 |
fun cert_typ ctxt raw_T env =
|
wenzelm@36150
|
481 |
let
|
wenzelm@43232
|
482 |
val thy = Proof_Context.theory_of ctxt;
|
wenzelm@36150
|
483 |
val T = Type.no_tvars (Sign.certify_typ thy raw_T)
|
wenzelm@36150
|
484 |
handle TYPE (msg, _, _) => error msg;
|
wenzelm@36150
|
485 |
val env' = OldTerm.add_typ_tfrees (T, env);
|
wenzelm@36150
|
486 |
in (T, env') end;
|
wenzelm@36150
|
487 |
|
schirmer@25171
|
488 |
fun gen_define_statespace prep_typ state_space args name parents comps thy =
|
schirmer@25171
|
489 |
let (* - args distinct
|
schirmer@25171
|
490 |
- only args may occur in comps and parent-instantiations
|
wenzelm@26478
|
491 |
- number of insts must match parent args
|
schirmer@25171
|
492 |
- no duplicate renamings
|
schirmer@25171
|
493 |
- renaming should occur in namespace
|
schirmer@25171
|
494 |
*)
|
wenzelm@26478
|
495 |
val _ = writeln ("Defining statespace " ^ quote name ^ " ...");
|
schirmer@25171
|
496 |
|
wenzelm@43232
|
497 |
val ctxt = Proof_Context.init_global thy;
|
wenzelm@27283
|
498 |
|
schirmer@25171
|
499 |
fun add_parent (Ts,pname,rs) env =
|
schirmer@25171
|
500 |
let
|
haftmann@28965
|
501 |
val full_pname = Sign.full_bname thy pname;
|
wenzelm@26478
|
502 |
val {args,components,...} =
|
schirmer@25171
|
503 |
(case get_statespace (Context.Theory thy) full_pname of
|
schirmer@25171
|
504 |
SOME r => r
|
schirmer@25171
|
505 |
| NONE => error ("Undefined statespace " ^ quote pname));
|
schirmer@25171
|
506 |
|
schirmer@25171
|
507 |
|
wenzelm@27283
|
508 |
val (Ts',env') = fold_map (prep_typ ctxt) Ts env
|
wenzelm@26478
|
509 |
handle ERROR msg => cat_error msg
|
wenzelm@36150
|
510 |
("The error(s) above occurred in parent statespace specification "
|
schirmer@25171
|
511 |
^ quote pname);
|
schirmer@25171
|
512 |
val err_insts = if length args <> length Ts' then
|
schirmer@25171
|
513 |
["number of type instantiation(s) does not match arguments of parent statespace "
|
schirmer@25171
|
514 |
^ quote pname]
|
schirmer@25171
|
515 |
else [];
|
wenzelm@26478
|
516 |
|
schirmer@25171
|
517 |
val rnames = map fst rs
|
schirmer@25171
|
518 |
val err_dup_renamings = (case duplicates (op =) rnames of
|
schirmer@25171
|
519 |
[] => []
|
schirmer@25171
|
520 |
| dups => ["Duplicate renaming(s) for " ^ commas dups])
|
schirmer@25171
|
521 |
|
schirmer@25171
|
522 |
val cnames = map fst components;
|
haftmann@36677
|
523 |
val err_rename_unknowns = (case subtract (op =) cnames rnames of
|
schirmer@25171
|
524 |
[] => []
|
schirmer@25171
|
525 |
| rs => ["Unknown components " ^ commas rs]);
|
wenzelm@26478
|
526 |
|
schirmer@25171
|
527 |
|
schirmer@25171
|
528 |
val rs' = map (AList.lookup (op =) rs o fst) components;
|
schirmer@25171
|
529 |
val errs =err_insts @ err_dup_renamings @ err_rename_unknowns
|
schirmer@25171
|
530 |
in if null errs then ((Ts',full_pname,rs'),env')
|
schirmer@25171
|
531 |
else error (cat_lines (errs @ ["in parent statespace " ^ quote pname]))
|
schirmer@25171
|
532 |
end;
|
wenzelm@26478
|
533 |
|
schirmer@25171
|
534 |
val (parents',env) = fold_map add_parent parents [];
|
schirmer@25171
|
535 |
|
schirmer@25171
|
536 |
val err_dup_args =
|
schirmer@25171
|
537 |
(case duplicates (op =) args of
|
schirmer@25171
|
538 |
[] => []
|
schirmer@25171
|
539 |
| dups => ["Duplicate type argument(s) " ^ commas dups]);
|
schirmer@25171
|
540 |
|
wenzelm@26478
|
541 |
|
wenzelm@26478
|
542 |
val err_dup_components =
|
schirmer@25171
|
543 |
(case duplicates (op =) (map fst comps) of
|
schirmer@25171
|
544 |
[] => []
|
schirmer@25171
|
545 |
| dups => ["Duplicate state-space components " ^ commas dups]);
|
schirmer@25171
|
546 |
|
schirmer@25171
|
547 |
fun prep_comp (n,T) env =
|
wenzelm@27283
|
548 |
let val (T', env') = prep_typ ctxt T env handle ERROR msg =>
|
wenzelm@36150
|
549 |
cat_error msg ("The error(s) above occurred in component " ^ quote n)
|
schirmer@25171
|
550 |
in ((n,T'), env') end;
|
schirmer@25171
|
551 |
|
schirmer@25171
|
552 |
val (comps',env') = fold_map prep_comp comps env;
|
schirmer@25171
|
553 |
|
schirmer@25171
|
554 |
val err_extra_frees =
|
schirmer@25171
|
555 |
(case subtract (op =) args (map fst env') of
|
schirmer@25171
|
556 |
[] => []
|
schirmer@25171
|
557 |
| extras => ["Extra free type variable(s) " ^ commas extras]);
|
schirmer@25171
|
558 |
|
schirmer@25171
|
559 |
val defaultS = Sign.defaultS thy;
|
schirmer@25171
|
560 |
val args' = map (fn x => (x, AList.lookup (op =) env x |> the_default defaultS)) args;
|
schirmer@25171
|
561 |
|
schirmer@25171
|
562 |
|
schirmer@25171
|
563 |
fun fst_eq ((x:string,_),(y,_)) = x = y;
|
wenzelm@26478
|
564 |
fun snd_eq ((_,t:typ),(_,u)) = t = u;
|
schirmer@25171
|
565 |
|
wenzelm@32952
|
566 |
val raw_parent_comps = maps (parent_components thy) parents';
|
wenzelm@26478
|
567 |
fun check_type (n,T) =
|
schirmer@25171
|
568 |
(case distinct (snd_eq) (filter (curry fst_eq (n,T)) raw_parent_comps) of
|
schirmer@25171
|
569 |
[] => []
|
schirmer@25171
|
570 |
| [_] => []
|
wenzelm@32445
|
571 |
| rs => ["Different types for component " ^ n ^": " ^
|
wenzelm@32445
|
572 |
commas (map (Syntax.string_of_typ ctxt o snd) rs)])
|
wenzelm@26478
|
573 |
|
wenzelm@32952
|
574 |
val err_dup_types = maps check_type (duplicates fst_eq raw_parent_comps)
|
schirmer@25171
|
575 |
|
schirmer@25171
|
576 |
val parent_comps = distinct (fst_eq) raw_parent_comps;
|
schirmer@25171
|
577 |
val all_comps = parent_comps @ comps';
|
schirmer@25171
|
578 |
val err_comp_in_parent = (case duplicates (op =) (map fst all_comps) of
|
schirmer@25171
|
579 |
[] => []
|
schirmer@25171
|
580 |
| xs => ["Components already defined in parents: " ^ commas xs]);
|
schirmer@25171
|
581 |
val errs = err_dup_args @ err_dup_components @ err_extra_frees @
|
schirmer@25171
|
582 |
err_dup_types @ err_comp_in_parent;
|
wenzelm@26478
|
583 |
in if null errs
|
schirmer@25171
|
584 |
then thy |> statespace_definition state_space args' name parents' parent_comps comps'
|
wenzelm@26478
|
585 |
else error (cat_lines errs)
|
schirmer@25171
|
586 |
end
|
schirmer@25171
|
587 |
handle ERROR msg => cat_error msg ("Failed to define statespace " ^ quote name);
|
wenzelm@26478
|
588 |
|
wenzelm@36150
|
589 |
val define_statespace = gen_define_statespace read_typ NONE;
|
wenzelm@36150
|
590 |
val define_statespace_i = gen_define_statespace cert_typ;
|
wenzelm@26478
|
591 |
|
schirmer@25171
|
592 |
|
schirmer@25171
|
593 |
(*** parse/print - translations ***)
|
schirmer@25171
|
594 |
|
schirmer@25171
|
595 |
|
schirmer@25171
|
596 |
local
|
wenzelm@26478
|
597 |
fun map_get_comp f ctxt (Free (name,_)) =
|
wenzelm@26478
|
598 |
(case (get_comp ctxt name) of
|
wenzelm@26478
|
599 |
SOME (T,_) => f T T dummyT
|
schirmer@25171
|
600 |
| NONE => (Syntax.free "arbitrary"(*; error "context not ready"*)))
|
schirmer@25171
|
601 |
| map_get_comp _ _ _ = Syntax.free "arbitrary";
|
schirmer@25171
|
602 |
|
schirmer@25171
|
603 |
val get_comp_projection = map_get_comp project_free;
|
schirmer@25171
|
604 |
val get_comp_injection = map_get_comp inject_free;
|
schirmer@25171
|
605 |
|
schirmer@25171
|
606 |
fun name_of (Free (n,_)) = n;
|
schirmer@25171
|
607 |
in
|
schirmer@25171
|
608 |
|
wenzelm@26478
|
609 |
fun gen_lookup_tr ctxt s n =
|
schirmer@25171
|
610 |
(case get_comp (Context.Proof ctxt) n of
|
wenzelm@26478
|
611 |
SOME (T,_) =>
|
schirmer@25171
|
612 |
Syntax.const "StateFun.lookup"$Syntax.free (project_name T)$Syntax.free n$s
|
wenzelm@26478
|
613 |
| NONE =>
|
schirmer@25171
|
614 |
if get_silent (Context.Proof ctxt)
|
wenzelm@32962
|
615 |
then Syntax.const "StateFun.lookup" $ Syntax.const "undefined" $ Syntax.free n $ s
|
schirmer@25171
|
616 |
else raise TERM ("StateSpace.gen_lookup_tr: component " ^ n ^ " not defined",[]));
|
schirmer@25171
|
617 |
|
wenzelm@42933
|
618 |
fun lookup_tr ctxt [s, x] =
|
wenzelm@43142
|
619 |
(case Term_Position.strip_positions x of
|
wenzelm@42933
|
620 |
Free (n,_) => gen_lookup_tr ctxt s n
|
wenzelm@42933
|
621 |
| _ => raise Match);
|
wenzelm@42933
|
622 |
|
schirmer@25171
|
623 |
fun lookup_swap_tr ctxt [Free (n,_),s] = gen_lookup_tr ctxt s n;
|
schirmer@25171
|
624 |
|
schirmer@25171
|
625 |
fun lookup_tr' ctxt [_$Free (prj,_),n as (_$Free (name,_)),s] =
|
schirmer@25171
|
626 |
( case get_comp (Context.Proof ctxt) name of
|
schirmer@25171
|
627 |
SOME (T,_) => if prj=project_name T then
|
wenzelm@26478
|
628 |
Syntax.const "_statespace_lookup" $ s $ n
|
schirmer@25171
|
629 |
else raise Match
|
schirmer@25171
|
630 |
| NONE => raise Match)
|
schirmer@25171
|
631 |
| lookup_tr' _ ts = raise Match;
|
schirmer@25171
|
632 |
|
wenzelm@26478
|
633 |
fun gen_update_tr id ctxt n v s =
|
schirmer@25171
|
634 |
let
|
schirmer@25171
|
635 |
fun pname T = if id then "Fun.id" else project_name T
|
schirmer@25171
|
636 |
fun iname T = if id then "Fun.id" else inject_name T
|
schirmer@25171
|
637 |
in
|
schirmer@25171
|
638 |
(case get_comp (Context.Proof ctxt) n of
|
schirmer@25171
|
639 |
SOME (T,_) => Syntax.const "StateFun.update"$
|
schirmer@25171
|
640 |
Syntax.free (pname T)$Syntax.free (iname T)$
|
schirmer@25171
|
641 |
Syntax.free n$(Syntax.const KN $ v)$s
|
wenzelm@26478
|
642 |
| NONE =>
|
wenzelm@26478
|
643 |
if get_silent (Context.Proof ctxt)
|
schirmer@25171
|
644 |
then Syntax.const "StateFun.update"$
|
haftmann@30249
|
645 |
Syntax.const "undefined" $ Syntax.const "undefined" $
|
haftmann@30249
|
646 |
Syntax.free n $ (Syntax.const KN $ v) $ s
|
schirmer@25171
|
647 |
else raise TERM ("StateSpace.gen_update_tr: component " ^ n ^ " not defined",[]))
|
schirmer@25171
|
648 |
end;
|
schirmer@25171
|
649 |
|
wenzelm@42933
|
650 |
fun update_tr ctxt [s, x, v] =
|
wenzelm@43142
|
651 |
(case Term_Position.strip_positions x of
|
wenzelm@42933
|
652 |
Free (n, _) => gen_update_tr false ctxt n v s
|
wenzelm@42933
|
653 |
| _ => raise Match);
|
schirmer@25171
|
654 |
|
schirmer@25171
|
655 |
fun update_tr' ctxt [_$Free (prj,_),_$Free (inj,_),n as (_$Free (name,_)),(Const (k,_)$v),s] =
|
wenzelm@30364
|
656 |
if Long_Name.base_name k = Long_Name.base_name KN then
|
schirmer@25171
|
657 |
(case get_comp (Context.Proof ctxt) name of
|
schirmer@25171
|
658 |
SOME (T,_) => if inj=inject_name T andalso prj=project_name T then
|
wenzelm@26478
|
659 |
Syntax.const "_statespace_update" $ s $ n $ v
|
schirmer@25171
|
660 |
else raise Match
|
schirmer@25171
|
661 |
| NONE => raise Match)
|
schirmer@25171
|
662 |
else raise Match
|
schirmer@25171
|
663 |
| update_tr' _ _ = raise Match;
|
schirmer@25171
|
664 |
|
schirmer@25171
|
665 |
end;
|
schirmer@25171
|
666 |
|
schirmer@25171
|
667 |
|
schirmer@25171
|
668 |
(*** outer syntax *)
|
schirmer@25171
|
669 |
|
wenzelm@36970
|
670 |
val type_insts =
|
wenzelm@36970
|
671 |
Parse.typ >> single ||
|
wenzelm@36970
|
672 |
Parse.$$$ "(" |-- Parse.!!! (Parse.list1 Parse.typ --| Parse.$$$ ")")
|
schirmer@25171
|
673 |
|
wenzelm@36970
|
674 |
val comp = Parse.name -- (Parse.$$$ "::" |-- Parse.!!! Parse.typ);
|
wenzelm@36970
|
675 |
fun plus1_unless test scan =
|
wenzelm@36970
|
676 |
scan ::: Scan.repeat (Parse.$$$ "+" |-- Scan.unless test (Parse.!!! scan));
|
schirmer@25171
|
677 |
|
wenzelm@36970
|
678 |
val mapsto = Parse.$$$ "=";
|
wenzelm@36970
|
679 |
val rename = Parse.name -- (mapsto |-- Parse.name);
|
wenzelm@36970
|
680 |
val renames = Scan.optional (Parse.$$$ "[" |-- Parse.!!! (Parse.list1 rename --| Parse.$$$ "]")) [];
|
schirmer@25171
|
681 |
|
schirmer@25171
|
682 |
|
wenzelm@36970
|
683 |
val parent = ((type_insts -- Parse.xname) || (Parse.xname >> pair [])) -- renames
|
schirmer@25171
|
684 |
>> (fn ((insts,name),renames) => (insts,name,renames))
|
schirmer@25171
|
685 |
|
schirmer@25171
|
686 |
|
schirmer@25171
|
687 |
val statespace_decl =
|
wenzelm@36970
|
688 |
Parse.type_args -- Parse.name --
|
wenzelm@36970
|
689 |
(Parse.$$$ "=" |--
|
schirmer@25171
|
690 |
((Scan.repeat1 comp >> pair []) ||
|
schirmer@25171
|
691 |
(plus1_unless comp parent --
|
wenzelm@36970
|
692 |
Scan.optional (Parse.$$$ "+" |-- Parse.!!! (Scan.repeat1 comp)) [])))
|
schirmer@25171
|
693 |
|
schirmer@25171
|
694 |
val statespace_command =
|
wenzelm@36970
|
695 |
Outer_Syntax.command "statespace" "define state space" Keyword.thy_decl
|
wenzelm@26478
|
696 |
(statespace_decl >> (fn ((args,name),(parents,comps)) =>
|
schirmer@25171
|
697 |
Toplevel.theory (define_statespace args name parents comps)))
|
schirmer@25171
|
698 |
|
hoelzl@32651
|
699 |
end; |