--- a/src/Pure/codegen.ML Wed Aug 10 18:02:16 2011 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1049 +0,0 @@
-(* Title: Pure/codegen.ML
- Author: Stefan Berghofer, TU Muenchen
-
-Generic code generator.
-*)
-
-signature CODEGEN =
-sig
- val quiet_mode : bool Unsynchronized.ref
- val message : string -> unit
- val margin : int Unsynchronized.ref
- val string_of : Pretty.T -> string
- val str : string -> Pretty.T
-
- datatype 'a mixfix =
- Arg
- | Ignore
- | Module
- | Pretty of Pretty.T
- | Quote of 'a;
-
- type deftab
- type node
- type codegr
- type 'a codegen
-
- val add_codegen: string -> term codegen -> theory -> theory
- val add_tycodegen: string -> typ codegen -> theory -> theory
- val add_preprocessor: (theory -> thm list -> thm list) -> theory -> theory
- val preprocess: theory -> thm list -> thm list
- val preprocess_term: theory -> term -> term
- val print_codegens: theory -> unit
- val generate_code: theory -> string list -> string list -> string -> (string * string) list ->
- (string * string) list * codegr
- val generate_code_i: theory -> string list -> string list -> string -> (string * term) list ->
- (string * string) list * codegr
- val assoc_const: string * (term mixfix list *
- (string * string) list) -> theory -> theory
- val assoc_const_i: (string * typ) * (term mixfix list *
- (string * string) list) -> theory -> theory
- val assoc_type: xstring * (typ mixfix list *
- (string * string) list) -> theory -> theory
- val get_assoc_code: theory -> string * typ ->
- (term mixfix list * (string * string) list) option
- val get_assoc_type: theory -> string ->
- (typ mixfix list * (string * string) list) option
- val codegen_error: codegr -> string -> string -> 'a
- val invoke_codegen: theory -> string list -> deftab -> string -> string -> bool ->
- term -> codegr -> Pretty.T * codegr
- val invoke_tycodegen: theory -> string list -> deftab -> string -> string -> bool ->
- typ -> codegr -> Pretty.T * codegr
- val mk_id: string -> string
- val mk_qual_id: string -> string * string -> string
- val mk_const_id: string -> string -> codegr -> (string * string) * codegr
- val get_const_id: codegr -> string -> string * string
- val mk_type_id: string -> string -> codegr -> (string * string) * codegr
- val get_type_id: codegr -> string -> string * string
- val thyname_of_type: theory -> string -> string
- val thyname_of_const: theory -> string -> string
- val rename_terms: term list -> term list
- val rename_term: term -> term
- val new_names: term -> string list -> string list
- val new_name: term -> string -> string
- val if_library: string list -> 'a -> 'a -> 'a
- val get_defn: theory -> deftab -> string -> typ ->
- ((typ * (string * thm)) * int option) option
- val is_instance: typ -> typ -> bool
- val parens: Pretty.T -> Pretty.T
- val mk_app: bool -> Pretty.T -> Pretty.T list -> Pretty.T
- val mk_tuple: Pretty.T list -> Pretty.T
- val mk_let: (Pretty.T * Pretty.T) list -> Pretty.T -> Pretty.T
- val eta_expand: term -> term list -> int -> term
- val strip_tname: string -> string
- val mk_type: bool -> typ -> Pretty.T
- val mk_term_of: codegr -> string -> bool -> typ -> Pretty.T
- val mk_gen: codegr -> string -> bool -> string list -> string -> typ -> Pretty.T
- val poke_test_fn: (int -> term list option) -> unit
- val poke_eval_fn: (unit -> term) -> unit
- val test_term: Proof.context -> term -> int -> term list option
- val eval_term: Proof.context -> term -> term
- val evaluation_conv: Proof.context -> conv
- val parse_mixfix: (string -> 'a) -> string -> 'a mixfix list
- val quotes_of: 'a mixfix list -> 'a list
- val num_args_of: 'a mixfix list -> int
- val replace_quotes: 'b list -> 'a mixfix list -> 'b mixfix list
- val mk_deftab: theory -> deftab
- val map_unfold: (simpset -> simpset) -> theory -> theory
- val add_unfold: thm -> theory -> theory
- val del_unfold: thm -> theory -> theory
-
- val get_node: codegr -> string -> node
- val add_edge: string * string -> codegr -> codegr
- val add_edge_acyclic: string * string -> codegr -> codegr
- val del_nodes: string list -> codegr -> codegr
- val map_node: string -> (node -> node) -> codegr -> codegr
- val new_node: string * node -> codegr -> codegr
-
- val setup: theory -> theory
-end;
-
-structure Codegen : CODEGEN =
-struct
-
-val quiet_mode = Unsynchronized.ref true;
-fun message s = if !quiet_mode then () else writeln s;
-
-val margin = Unsynchronized.ref 80;
-
-fun string_of p = Print_Mode.setmp [] (Pretty.string_of_margin (!margin)) p;
-
-val str = Print_Mode.setmp [] Pretty.str;
-
-(**** Mixfix syntax ****)
-
-datatype 'a mixfix =
- Arg
- | Ignore
- | Module
- | Pretty of Pretty.T
- | Quote of 'a;
-
-fun is_arg Arg = true
- | is_arg Ignore = true
- | is_arg _ = false;
-
-fun quotes_of [] = []
- | quotes_of (Quote q :: ms) = q :: quotes_of ms
- | quotes_of (_ :: ms) = quotes_of ms;
-
-fun args_of [] xs = ([], xs)
- | args_of (Arg :: ms) (x :: xs) = apfst (cons x) (args_of ms xs)
- | args_of (Ignore :: ms) (_ :: xs) = args_of ms xs
- | args_of (_ :: ms) xs = args_of ms xs;
-
-fun num_args_of x = length (filter is_arg x);
-
-
-(**** theory data ****)
-
-(* preprocessed definition table *)
-
-type deftab =
- (typ * (* type of constant *)
- (string * (* name of theory containing definition of constant *)
- thm)) (* definition theorem *)
- list Symtab.table;
-
-(* code dependency graph *)
-
-type nametab = (string * string) Symtab.table * unit Symtab.table;
-
-fun merge_nametabs ((tab, used) : nametab, (tab', used')) =
- (Symtab.merge op = (tab, tab'), Symtab.merge op = (used, used'));
-
-type node =
- (exn option * (* slot for arbitrary data *)
- string * (* name of structure containing piece of code *)
- string); (* piece of code *)
-
-type codegr =
- node Graph.T *
- (nametab * (* table for assigned constant names *)
- nametab); (* table for assigned type names *)
-
-val emptygr : codegr = (Graph.empty,
- ((Symtab.empty, Symtab.empty), (Symtab.empty, Symtab.empty)));
-
-(* type of code generators *)
-
-type 'a codegen =
- theory -> (* theory in which generate_code was called *)
- string list -> (* mode *)
- deftab -> (* definition table (for efficiency) *)
- string -> (* node name of caller (for recording dependencies) *)
- string -> (* module name of caller (for modular code generation) *)
- bool -> (* whether to parenthesize generated expression *)
- 'a -> (* item to generate code from *)
- codegr -> (* code dependency graph *)
- (Pretty.T * codegr) option;
-
-
-(* theory data *)
-
-structure CodegenData = Theory_Data
-(
- type T =
- {codegens : (string * term codegen) list,
- tycodegens : (string * typ codegen) list,
- consts : ((string * typ) * (term mixfix list * (string * string) list)) list,
- types : (string * (typ mixfix list * (string * string) list)) list,
- preprocs: (stamp * (theory -> thm list -> thm list)) list,
- modules: codegr Symtab.table};
-
- val empty =
- {codegens = [], tycodegens = [], consts = [], types = [],
- preprocs = [], modules = Symtab.empty};
- val extend = I;
-
- fun merge
- ({codegens = codegens1, tycodegens = tycodegens1,
- consts = consts1, types = types1,
- preprocs = preprocs1, modules = modules1} : T,
- {codegens = codegens2, tycodegens = tycodegens2,
- consts = consts2, types = types2,
- preprocs = preprocs2, modules = modules2}) : T =
- {codegens = AList.merge (op =) (K true) (codegens1, codegens2),
- tycodegens = AList.merge (op =) (K true) (tycodegens1, tycodegens2),
- consts = AList.merge (op =) (K true) (consts1, consts2),
- types = AList.merge (op =) (K true) (types1, types2),
- preprocs = AList.merge (op =) (K true) (preprocs1, preprocs2),
- modules = Symtab.merge (K true) (modules1, modules2)};
-);
-
-fun print_codegens thy =
- let val {codegens, tycodegens, ...} = CodegenData.get thy in
- Pretty.writeln (Pretty.chunks
- [Pretty.strs ("term code generators:" :: map fst codegens),
- Pretty.strs ("type code generators:" :: map fst tycodegens)])
- end;
-
-
-
-(**** access modules ****)
-
-fun get_modules thy = #modules (CodegenData.get thy);
-
-fun map_modules f thy =
- let val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy;
- in CodegenData.put {codegens = codegens, tycodegens = tycodegens,
- consts = consts, types = types, preprocs = preprocs,
- modules = f modules} thy
- end;
-
-
-(**** add new code generators to theory ****)
-
-fun add_codegen name f thy =
- let val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy
- in (case AList.lookup (op =) codegens name of
- NONE => CodegenData.put {codegens = (name, f) :: codegens,
- tycodegens = tycodegens, consts = consts, types = types,
- preprocs = preprocs, modules = modules} thy
- | SOME _ => error ("Code generator " ^ name ^ " already declared"))
- end;
-
-fun add_tycodegen name f thy =
- let val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy
- in (case AList.lookup (op =) tycodegens name of
- NONE => CodegenData.put {tycodegens = (name, f) :: tycodegens,
- codegens = codegens, consts = consts, types = types,
- preprocs = preprocs, modules = modules} thy
- | SOME _ => error ("Code generator " ^ name ^ " already declared"))
- end;
-
-
-(**** preprocessors ****)
-
-fun add_preprocessor p thy =
- let val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy
- in CodegenData.put {tycodegens = tycodegens,
- codegens = codegens, consts = consts, types = types,
- preprocs = (stamp (), p) :: preprocs,
- modules = modules} thy
- end;
-
-fun preprocess thy =
- let val {preprocs, ...} = CodegenData.get thy
- in fold (fn (_, f) => f thy) preprocs end;
-
-fun preprocess_term thy t =
- let
- val x = Free (singleton (Name.variant_list (OldTerm.add_term_names (t, []))) "x", fastype_of t);
- (* fake definition *)
- val eq = Skip_Proof.make_thm thy (Logic.mk_equals (x, t));
- fun err () = error "preprocess_term: bad preprocessor"
- in case map prop_of (preprocess thy [eq]) of
- [Const ("==", _) $ x' $ t'] => if x = x' then t' else err ()
- | _ => err ()
- end;
-
-structure UnfoldData = Theory_Data
-(
- type T = simpset;
- val empty = empty_ss;
- val extend = I;
- val merge = merge_ss;
-);
-
-val map_unfold = UnfoldData.map;
-val add_unfold = map_unfold o Simplifier.add_simp;
-val del_unfold = map_unfold o Simplifier.del_simp;
-
-fun unfold_preprocessor thy =
- let val ss = Simplifier.global_context thy (UnfoldData.get thy)
- in map (Thm.transfer thy #> Simplifier.full_simplify ss) end;
-
-
-(**** associate constants with target language code ****)
-
-fun gen_assoc_const prep_const (raw_const, syn) thy =
- let
- val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy;
- val (cname, T) = prep_const thy raw_const;
- in
- if num_args_of (fst syn) > length (binder_types T) then
- error ("More arguments than in corresponding type of " ^ cname)
- else case AList.lookup (op =) consts (cname, T) of
- NONE => CodegenData.put {codegens = codegens,
- tycodegens = tycodegens,
- consts = ((cname, T), syn) :: consts,
- types = types, preprocs = preprocs,
- modules = modules} thy
- | SOME _ => error ("Constant " ^ cname ^ " already associated with code")
- end;
-
-val assoc_const_i = gen_assoc_const (K I);
-val assoc_const = gen_assoc_const Code.read_bare_const;
-
-
-(**** associate types with target language types ****)
-
-fun assoc_type (s, syn) thy =
- let
- val {codegens, tycodegens, consts, types, preprocs, modules} =
- CodegenData.get thy;
- val tc = Sign.intern_type thy s;
- in
- case Symtab.lookup (snd (#types (Type.rep_tsig (Sign.tsig_of thy)))) tc of
- SOME (Type.LogicalType i) =>
- if num_args_of (fst syn) > i then
- error ("More arguments than corresponding type constructor " ^ s)
- else
- (case AList.lookup (op =) types tc of
- NONE => CodegenData.put {codegens = codegens,
- tycodegens = tycodegens, consts = consts,
- types = (tc, syn) :: types,
- preprocs = preprocs, modules = modules} thy
- | SOME _ => error ("Type " ^ tc ^ " already associated with code"))
- | _ => error ("Not a type constructor: " ^ s)
- end;
-
-fun get_assoc_type thy = AList.lookup (op =) ((#types o CodegenData.get) thy);
-
-
-(**** make valid ML identifiers ****)
-
-fun is_ascii_letdig x = Symbol.is_ascii_letter x orelse
- Symbol.is_ascii_digit x orelse Symbol.is_ascii_quasi x;
-
-fun dest_sym s =
- (case split_last (snd (take_prefix (fn c => c = "\\") (raw_explode s))) of
- ("<" :: "^" :: xs, ">") => (true, implode xs)
- | ("<" :: xs, ">") => (false, implode xs)
- | _ => raise Fail "dest_sym");
-
-fun mk_id s = if s = "" then "" else
- let
- fun check_str [] = []
- | check_str xs = (case take_prefix is_ascii_letdig xs of
- ([], " " :: zs) => check_str zs
- | ([], z :: zs) =>
- if size z = 1 then string_of_int (ord z) :: check_str zs
- else (case dest_sym z of
- (true, "isub") => check_str zs
- | (true, "isup") => "" :: check_str zs
- | (ctrl, s') => (if ctrl then "ctrl_" ^ s' else s') :: check_str zs)
- | (ys, zs) => implode ys :: check_str zs);
- val s' = space_implode "_" (maps (check_str o Symbol.explode) (Long_Name.explode s))
- in
- if Symbol.is_ascii_letter (hd (raw_explode s')) then s' else "id_" ^ s'
- end;
-
-fun mk_long_id (p as (tab, used)) module s =
- let
- fun find_name [] = raise Fail "mk_long_id"
- | find_name (ys :: yss) =
- let
- val s' = Long_Name.implode ys
- val s'' = Long_Name.append module s'
- in case Symtab.lookup used s'' of
- NONE => ((module, s'),
- (Symtab.update_new (s, (module, s')) tab,
- Symtab.update_new (s'', ()) used))
- | SOME _ => find_name yss
- end
- in case Symtab.lookup tab s of
- NONE => find_name (Library.suffixes1 (Long_Name.explode s))
- | SOME name => (name, p)
- end;
-
-(* module: module name for caller *)
-(* module': module name for callee *)
-(* if caller and callee reside in different modules, use qualified access *)
-
-fun mk_qual_id module (module', s) =
- if module = module' orelse module' = "" then s else module' ^ "." ^ s;
-
-fun mk_const_id module cname (gr, (tab1, tab2)) =
- let
- val ((module, s), tab1') = mk_long_id tab1 module cname
- val s' = mk_id s;
- val s'' = if ML_Syntax.is_reserved s' then s' ^ "_const" else s'
- in (((module, s'')), (gr, (tab1', tab2))) end;
-
-fun get_const_id (gr, (tab1, tab2)) cname =
- case Symtab.lookup (fst tab1) cname of
- NONE => error ("get_const_id: no such constant: " ^ quote cname)
- | SOME (module, s) =>
- let
- val s' = mk_id s;
- val s'' = if ML_Syntax.is_reserved s' then s' ^ "_const" else s'
- in (module, s'') end;
-
-fun mk_type_id module tyname (gr, (tab1, tab2)) =
- let
- val ((module, s), tab2') = mk_long_id tab2 module tyname
- val s' = mk_id s;
- val s'' = if ML_Syntax.is_reserved s' then s' ^ "_type" else s'
- in ((module, s''), (gr, (tab1, tab2'))) end;
-
-fun get_type_id (gr, (tab1, tab2)) tyname =
- case Symtab.lookup (fst tab2) tyname of
- NONE => error ("get_type_id: no such type: " ^ quote tyname)
- | SOME (module, s) =>
- let
- val s' = mk_id s;
- val s'' = if ML_Syntax.is_reserved s' then s' ^ "_type" else s'
- in (module, s'') end;
-
-fun get_type_id' f tab tyname = apsnd f (get_type_id tab tyname);
-
-fun get_node (gr, x) k = Graph.get_node gr k;
-fun add_edge e (gr, x) = (Graph.add_edge e gr, x);
-fun add_edge_acyclic e (gr, x) = (Graph.add_edge_acyclic e gr, x);
-fun del_nodes ks (gr, x) = (Graph.del_nodes ks gr, x);
-fun map_node k f (gr, x) = (Graph.map_node k f gr, x);
-fun new_node p (gr, x) = (Graph.new_node p gr, x);
-
-fun thyname_of_type thy = #theory_name o Name_Space.the_entry (Sign.type_space thy);
-fun thyname_of_const thy = #theory_name o Name_Space.the_entry (Sign.const_space thy);
-
-fun rename_terms ts =
- let
- val names = List.foldr OldTerm.add_term_names
- (map (fst o fst) (rev (fold Term.add_vars ts []))) ts;
- val reserved = filter ML_Syntax.is_reserved names;
- val (illegal, alt_names) = split_list (map_filter (fn s =>
- let val s' = mk_id s in if s = s' then NONE else SOME (s, s') end) names)
- val ps = (reserved @ illegal) ~~
- Name.variant_list names (map (suffix "'") reserved @ alt_names);
-
- fun rename_id s = AList.lookup (op =) ps s |> the_default s;
-
- fun rename (Var ((a, i), T)) = Var ((rename_id a, i), T)
- | rename (Free (a, T)) = Free (rename_id a, T)
- | rename (Abs (s, T, t)) = Abs (s, T, rename t)
- | rename (t $ u) = rename t $ rename u
- | rename t = t;
- in
- map rename ts
- end;
-
-val rename_term = hd o rename_terms o single;
-
-
-(**** retrieve definition of constant ****)
-
-fun is_instance T1 T2 =
- Type.raw_instance (T1, if null (OldTerm.typ_tfrees T2) then T2 else Logic.varifyT_global T2);
-
-fun get_assoc_code thy (s, T) = Option.map snd (find_first (fn ((s', T'), _) =>
- s = s' andalso is_instance T T') (#consts (CodegenData.get thy)));
-
-fun get_aux_code mode xs = map_filter (fn (m, code) =>
- if m = "" orelse member (op =) mode m then SOME code else NONE) xs;
-
-fun dest_prim_def t =
- let
- val (lhs, rhs) = Logic.dest_equals t;
- val (c, args) = strip_comb lhs;
- val (s, T) = dest_Const c
- in if forall is_Var args then SOME (s, (T, (args, rhs))) else NONE
- end handle TERM _ => NONE;
-
-fun mk_deftab thy =
- let
- val axmss =
- map (fn thy' => (Context.theory_name thy', Theory.axiom_table thy'))
- (Theory.nodes_of thy);
- fun add_def thyname (name, t) =
- (case dest_prim_def t of
- NONE => I
- | SOME (s, (T, _)) => Symtab.map_default (s, [])
- (cons (T, (thyname, Thm.axiom thy name))));
- in
- fold (fn (thyname, axms) => Symtab.fold (add_def thyname) axms) axmss Symtab.empty
- end;
-
-fun prep_prim_def thy thm =
- let
- val prop = case preprocess thy [thm]
- of [thm'] => Thm.prop_of thm'
- | _ => error "mk_deftab: bad preprocessor"
- in ((Option.map o apsnd o apsnd)
- (fn (args, rhs) => split_last (rename_terms (args @ [rhs]))) o dest_prim_def) prop
- end;
-
-fun get_defn thy defs s T = (case Symtab.lookup defs s of
- NONE => NONE
- | SOME ds =>
- let val i = find_index (is_instance T o fst) ds
- in if i >= 0 then
- SOME (nth ds i, if length ds = 1 then NONE else SOME i)
- else NONE
- end);
-
-
-(**** invoke suitable code generator for term / type ****)
-
-fun codegen_error (gr, _) dep s =
- error (s ^ "\nrequired by:\n" ^ commas (Graph.all_succs gr [dep]));
-
-fun invoke_codegen thy mode defs dep module brack t gr = (case get_first
- (fn (_, f) => f thy mode defs dep module brack t gr) (#codegens (CodegenData.get thy)) of
- NONE => codegen_error gr dep ("Unable to generate code for term:\n" ^
- Syntax.string_of_term_global thy t)
- | SOME x => x);
-
-fun invoke_tycodegen thy mode defs dep module brack T gr = (case get_first
- (fn (_, f) => f thy mode defs dep module brack T gr ) (#tycodegens (CodegenData.get thy)) of
- NONE => codegen_error gr dep ("Unable to generate code for type:\n" ^
- Syntax.string_of_typ_global thy T)
- | SOME x => x);
-
-
-(**** code generator for mixfix expressions ****)
-
-fun parens p = Pretty.block [str "(", p, str ")"];
-
-fun pretty_fn [] p = [p]
- | pretty_fn (x::xs) p = str ("fn " ^ x ^ " =>") ::
- Pretty.brk 1 :: pretty_fn xs p;
-
-fun pretty_mixfix _ _ [] [] _ = []
- | pretty_mixfix module module' (Arg :: ms) (p :: ps) qs =
- p :: pretty_mixfix module module' ms ps qs
- | pretty_mixfix module module' (Ignore :: ms) ps qs =
- pretty_mixfix module module' ms ps qs
- | pretty_mixfix module module' (Module :: ms) ps qs =
- (if module <> module'
- then cons (str (module' ^ ".")) else I)
- (pretty_mixfix module module' ms ps qs)
- | pretty_mixfix module module' (Pretty p :: ms) ps qs =
- p :: pretty_mixfix module module' ms ps qs
- | pretty_mixfix module module' (Quote _ :: ms) ps (q :: qs) =
- q :: pretty_mixfix module module' ms ps qs;
-
-fun replace_quotes [] [] = []
- | replace_quotes xs (Arg :: ms) =
- Arg :: replace_quotes xs ms
- | replace_quotes xs (Ignore :: ms) =
- Ignore :: replace_quotes xs ms
- | replace_quotes xs (Module :: ms) =
- Module :: replace_quotes xs ms
- | replace_quotes xs (Pretty p :: ms) =
- Pretty p :: replace_quotes xs ms
- | replace_quotes (x::xs) (Quote _ :: ms) =
- Quote x :: replace_quotes xs ms;
-
-
-(**** default code generators ****)
-
-fun eta_expand t ts i =
- let
- val k = length ts;
- val Ts = drop k (binder_types (fastype_of t));
- val j = i - k
- in
- List.foldr (fn (T, t) => Abs ("x", T, t))
- (list_comb (t, ts @ map Bound (j-1 downto 0))) (take j Ts)
- end;
-
-fun mk_app _ p [] = p
- | mk_app brack p ps = if brack then
- Pretty.block (str "(" ::
- separate (Pretty.brk 1) (p :: ps) @ [str ")"])
- else Pretty.block (separate (Pretty.brk 1) (p :: ps));
-
-fun new_names t xs = Name.variant_list
- (union (op =) (map (fst o fst o dest_Var) (OldTerm.term_vars t))
- (OldTerm.add_term_names (t, ML_Syntax.reserved_names))) (map mk_id xs);
-
-fun new_name t x = hd (new_names t [x]);
-
-fun if_library mode x y = if member (op =) mode "library" then x else y;
-
-fun default_codegen thy mode defs dep module brack t gr =
- let
- val (u, ts) = strip_comb t;
- fun codegens brack = fold_map (invoke_codegen thy mode defs dep module brack)
- in (case u of
- Var ((s, i), T) =>
- let
- val (ps, gr') = codegens true ts gr;
- val (_, gr'') = invoke_tycodegen thy mode defs dep module false T gr'
- in SOME (mk_app brack (str (s ^
- (if i=0 then "" else string_of_int i))) ps, gr'')
- end
-
- | Free (s, T) =>
- let
- val (ps, gr') = codegens true ts gr;
- val (_, gr'') = invoke_tycodegen thy mode defs dep module false T gr'
- in SOME (mk_app brack (str s) ps, gr'') end
-
- | Const (s, T) =>
- (case get_assoc_code thy (s, T) of
- SOME (ms, aux) =>
- let val i = num_args_of ms
- in if length ts < i then
- default_codegen thy mode defs dep module brack (eta_expand u ts i) gr
- else
- let
- val (ts1, ts2) = args_of ms ts;
- val (ps1, gr1) = codegens false ts1 gr;
- val (ps2, gr2) = codegens true ts2 gr1;
- val (ps3, gr3) = codegens false (quotes_of ms) gr2;
- val (_, gr4) = invoke_tycodegen thy mode defs dep module false
- (funpow (length ts) (hd o tl o snd o dest_Type) T) gr3;
- val (module', suffix) = (case get_defn thy defs s T of
- NONE => (if_library mode (thyname_of_const thy s) module, "")
- | SOME ((U, (module', _)), NONE) =>
- (if_library mode module' module, "")
- | SOME ((U, (module', _)), SOME i) =>
- (if_library mode module' module, " def" ^ string_of_int i));
- val node_id = s ^ suffix;
- fun p module' = mk_app brack (Pretty.block
- (pretty_mixfix module module' ms ps1 ps3)) ps2
- in SOME (case try (get_node gr4) node_id of
- NONE => (case get_aux_code mode aux of
- [] => (p module, gr4)
- | xs => (p module', add_edge (node_id, dep) (new_node
- (node_id, (NONE, module', cat_lines xs ^ "\n")) gr4)))
- | SOME (_, module'', _) =>
- (p module'', add_edge (node_id, dep) gr4))
- end
- end
- | NONE => (case get_defn thy defs s T of
- NONE => NONE
- | SOME ((U, (thyname, thm)), k) => (case prep_prim_def thy thm
- of SOME (_, (_, (args, rhs))) => let
- val module' = if_library mode thyname module;
- val suffix = (case k of NONE => "" | SOME i => " def" ^ string_of_int i);
- val node_id = s ^ suffix;
- val ((ps, def_id), gr') = gr |> codegens true ts
- ||>> mk_const_id module' (s ^ suffix);
- val p = mk_app brack (str (mk_qual_id module def_id)) ps
- in SOME (case try (get_node gr') node_id of
- NONE =>
- let
- val _ = message ("expanding definition of " ^ s);
- val Ts = binder_types U;
- val (args', rhs') =
- if not (null args) orelse null Ts then (args, rhs) else
- let val v = Free (new_name rhs "x", hd Ts)
- in ([v], betapply (rhs, v)) end;
- val (p', gr1) = invoke_codegen thy mode defs node_id module' false
- rhs' (add_edge (node_id, dep)
- (new_node (node_id, (NONE, "", "")) gr'));
- val (xs, gr2) = codegens false args' gr1;
- val (_, gr3) = invoke_tycodegen thy mode defs dep module false T gr2;
- val (ty, gr4) = invoke_tycodegen thy mode defs node_id module' false U gr3;
- in (p, map_node node_id (K (NONE, module', string_of
- (Pretty.block (separate (Pretty.brk 1)
- (if null args' then
- [str ("val " ^ snd def_id ^ " :"), ty]
- else str ("fun " ^ snd def_id) :: xs) @
- [str " =", Pretty.brk 1, p', str ";"])) ^ "\n\n")) gr4)
- end
- | SOME _ => (p, add_edge (node_id, dep) gr'))
- end
- | NONE => NONE)))
-
- | Abs _ =>
- let
- val (bs, Ts) = ListPair.unzip (strip_abs_vars u);
- val t = strip_abs_body u
- val bs' = new_names t bs;
- val (ps, gr1) = codegens true ts gr;
- val (p, gr2) = invoke_codegen thy mode defs dep module false
- (subst_bounds (map Free (rev (bs' ~~ Ts)), t)) gr1;
- in
- SOME (mk_app brack (Pretty.block (str "(" :: pretty_fn bs' p @
- [str ")"])) ps, gr2)
- end
-
- | _ => NONE)
- end;
-
-fun default_tycodegen thy mode defs dep module brack (TVar ((s, i), _)) gr =
- SOME (str (s ^ (if i = 0 then "" else string_of_int i)), gr)
- | default_tycodegen thy mode defs dep module brack (TFree (s, _)) gr =
- SOME (str s, gr)
- | default_tycodegen thy mode defs dep module brack (Type (s, Ts)) gr =
- (case AList.lookup (op =) ((#types o CodegenData.get) thy) s of
- NONE => NONE
- | SOME (ms, aux) =>
- let
- val (ps, gr') = fold_map
- (invoke_tycodegen thy mode defs dep module false)
- (fst (args_of ms Ts)) gr;
- val (qs, gr'') = fold_map
- (invoke_tycodegen thy mode defs dep module false)
- (quotes_of ms) gr';
- val module' = if_library mode (thyname_of_type thy s) module;
- val node_id = s ^ " (type)";
- fun p module' = Pretty.block (pretty_mixfix module module' ms ps qs)
- in SOME (case try (get_node gr'') node_id of
- NONE => (case get_aux_code mode aux of
- [] => (p module', gr'')
- | xs => (p module', snd (mk_type_id module' s
- (add_edge (node_id, dep) (new_node (node_id,
- (NONE, module', cat_lines xs ^ "\n")) gr'')))))
- | SOME (_, module'', _) =>
- (p module'', add_edge (node_id, dep) gr''))
- end);
-
-fun mk_tuple [p] = p
- | mk_tuple ps = Pretty.block (str "(" ::
- flat (separate [str ",", Pretty.brk 1] (map single ps)) @ [str ")"]);
-
-fun mk_let bindings body =
- Pretty.blk (0, [str "let", Pretty.brk 1,
- Pretty.blk (0, separate Pretty.fbrk (map (fn (pat, rhs) =>
- Pretty.block [str "val ", pat, str " =", Pretty.brk 1,
- rhs, str ";"]) bindings)),
- Pretty.brk 1, str "in", Pretty.brk 1, body,
- Pretty.brk 1, str "end"]);
-
-fun mk_struct name s = "structure " ^ name ^ " =\nstruct\n\n" ^ s ^ "end;\n";
-
-fun add_to_module name s = AList.map_entry (op =) (name : string) (suffix s);
-
-fun output_code gr module xs =
- let
- val code = map_filter (fn s =>
- let val c as (_, module', _) = Graph.get_node gr s
- in if module = "" orelse module = module' then SOME (s, c) else NONE end)
- (rev (Graph.all_preds gr xs));
- fun string_of_cycle (a :: b :: cs) =
- let val SOME (x, y) = get_first (fn (x, (_, a', _)) =>
- if a = a' then Option.map (pair x)
- (find_first ((fn (_, b', _) => b' = b) o Graph.get_node gr)
- (Graph.imm_succs gr x))
- else NONE) code
- in x ^ " called by " ^ y ^ "\n" ^ string_of_cycle (b :: cs) end
- | string_of_cycle _ = ""
- in
- if module = "" then
- let
- val modules = distinct (op =) (map (#2 o snd) code);
- val mod_gr = fold_rev Graph.add_edge_acyclic
- (maps (fn (s, (_, module, _)) => map (pair module)
- (filter_out (fn s => s = module) (map (#2 o Graph.get_node gr)
- (Graph.imm_succs gr s)))) code)
- (fold_rev (Graph.new_node o rpair ()) modules Graph.empty);
- val modules' =
- rev (Graph.all_preds mod_gr (map (#2 o Graph.get_node gr) xs))
- in
- List.foldl (fn ((_, (_, module, s)), ms) => add_to_module module s ms)
- (map (rpair "") modules') code
- end handle Graph.CYCLES (cs :: _) =>
- error ("Cyclic dependency of modules:\n" ^ commas cs ^
- "\n" ^ string_of_cycle cs)
- else [(module, implode (map (#3 o snd) code))]
- end;
-
-fun gen_generate_code prep_term thy mode modules module xs =
- let
- val _ = (module <> "" orelse
- member (op =) mode "library" andalso forall (fn (s, _) => s = "") xs)
- orelse error "missing module name";
- val graphs = get_modules thy;
- val defs = mk_deftab thy;
- val gr = new_node ("<Top>", (NONE, module, ""))
- (List.foldl (fn ((gr, (tab1, tab2)), (gr', (tab1', tab2'))) =>
- (Graph.merge (fn ((_, module, _), (_, module', _)) =>
- module = module') (gr, gr'),
- (merge_nametabs (tab1, tab1'), merge_nametabs (tab2, tab2')))) emptygr
- (map (fn s => case Symtab.lookup graphs s of
- NONE => error ("Undefined code module: " ^ s)
- | SOME gr => gr) modules))
- handle Graph.DUP k => error ("Duplicate code for " ^ k);
- fun expand (t as Abs _) = t
- | expand t = (case fastype_of t of
- Type ("fun", [T, U]) => Abs ("x", T, t $ Bound 0) | _ => t);
- val (ps, gr') = fold_map (fn (s, t) => fn gr => apfst (pair s)
- (invoke_codegen thy mode defs "<Top>" module false t gr))
- (map (apsnd (expand o preprocess_term thy o prep_term thy)) xs) gr;
- val code = map_filter
- (fn ("", _) => NONE
- | (s', p) => SOME (string_of (Pretty.block
- [str ("val " ^ s' ^ " ="), Pretty.brk 1, p, str ";"]))) ps;
- val code' = space_implode "\n\n" code ^ "\n\n";
- val code'' =
- map_filter (fn (name, s) =>
- if member (op =) mode "library" andalso name = module andalso null code
- then NONE
- else SOME (name, mk_struct name s))
- ((if null code then I
- else add_to_module module code')
- (output_code (fst gr') (if_library mode "" module) ["<Top>"]))
- in
- (code'', del_nodes ["<Top>"] gr')
- end;
-
-val generate_code_i = gen_generate_code Sign.cert_term;
-val generate_code =
- gen_generate_code (Syntax.read_term o Proof_Context.allow_dummies o Proof_Context.init_global);
-
-
-(**** Reflection ****)
-
-val strip_tname = implode o tl o raw_explode;
-
-fun pretty_list xs = Pretty.block (str "[" ::
- flat (separate [str ",", Pretty.brk 1] (map single xs)) @
- [str "]"]);
-
-fun mk_type p (TVar ((s, i), _)) = str
- (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "T")
- | mk_type p (TFree (s, _)) = str (strip_tname s ^ "T")
- | mk_type p (Type (s, Ts)) = (if p then parens else I) (Pretty.block
- [str "Type", Pretty.brk 1, str ("(\"" ^ s ^ "\","),
- Pretty.brk 1, pretty_list (map (mk_type false) Ts), str ")"]);
-
-fun mk_term_of gr module p (TVar ((s, i), _)) = str
- (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "F")
- | mk_term_of gr module p (TFree (s, _)) = str (strip_tname s ^ "F")
- | mk_term_of gr module p (Type (s, Ts)) = (if p then parens else I)
- (Pretty.block (separate (Pretty.brk 1)
- (str (mk_qual_id module
- (get_type_id' (fn s' => "term_of_" ^ s') gr s)) ::
- maps (fn T =>
- [mk_term_of gr module true T, mk_type true T]) Ts)));
-
-
-(**** Implicit results ****)
-
-structure Result = Proof_Data
-(
- type T = (int -> term list option) * (unit -> term);
- fun init _ = (fn _ => NONE, fn () => Bound 0);
-);
-
-val get_test_fn = #1 o Result.get;
-val get_eval_fn = #2 o Result.get;
-
-fun poke_test_fn f = Context.>> (Context.map_proof (Result.map (fn (_, g) => (f, g))));
-fun poke_eval_fn g = Context.>> (Context.map_proof (Result.map (fn (f, _) => (f, g))));
-
-
-(**** Test data generators ****)
-
-fun mk_gen gr module p xs a (TVar ((s, i), _)) = str
- (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "G")
- | mk_gen gr module p xs a (TFree (s, _)) = str (strip_tname s ^ "G")
- | mk_gen gr module p xs a (Type (tyc as (s, Ts))) = (if p then parens else I)
- (Pretty.block (separate (Pretty.brk 1)
- (str (mk_qual_id module (get_type_id' (fn s' => "gen_" ^ s') gr s) ^
- (if member (op =) xs s then "'" else "")) ::
- (case tyc of
- ("fun", [T, U]) =>
- [mk_term_of gr module true T, mk_type true T,
- mk_gen gr module true xs a U, mk_type true U]
- | _ => maps (fn T =>
- [mk_gen gr module true xs a T, mk_type true T]) Ts) @
- (if member (op =) xs s then [str a] else []))));
-
-fun test_term ctxt t =
- let
- val thy = Proof_Context.theory_of ctxt;
- val (code, gr) = generate_code_i thy ["term_of", "test"] [] "Generated" [("testf", t)];
- val Ts = map snd (fst (strip_abs t));
- val args = map_index (fn (i, T) => ("arg" ^ string_of_int i, T)) Ts;
- val s = "structure Test_Term =\nstruct\n\n" ^
- cat_lines (map snd code) ^
- "\nopen Generated;\n\n" ^ string_of
- (Pretty.block [str "val () = Codegen.poke_test_fn",
- Pretty.brk 1, str ("(fn i =>"), Pretty.brk 1,
- mk_let (map (fn (s, T) =>
- (mk_tuple [str s, str (s ^ "_t")],
- Pretty.block [mk_gen gr "Generated" false [] "" T, Pretty.brk 1,
- str "i"])) args)
- (Pretty.block [str "if ",
- mk_app false (str "testf") (map (str o fst) args),
- Pretty.brk 1, str "then NONE",
- Pretty.brk 1, str "else ",
- Pretty.block [str "SOME ",
- Pretty.enum "," "[" "]" (map (fn (s, _) => str (s ^ "_t ()")) args)]]),
- str ");"]) ^
- "\n\nend;\n";
- in
- ctxt
- |> Context.proof_map (ML_Context.exec (fn () => ML_Context.eval_text false Position.none s))
- |> get_test_fn
- end;
-
-
-(**** Evaluator for terms ****)
-
-fun eval_term ctxt t =
- let
- val _ =
- legacy_feature
- "Old evaluation mechanism -- use evaluator \"code\" or method \"eval\" instead";
- val thy = Proof_Context.theory_of ctxt;
- val _ = (null (Term.add_tvars t []) andalso null (Term.add_tfrees t [])) orelse
- error "Term to be evaluated contains type variables";
- val _ = (null (Term.add_vars t []) andalso null (Term.add_frees t [])) orelse
- error "Term to be evaluated contains variables";
- val (code, gr) =
- generate_code_i thy ["term_of"] [] "Generated"
- [("result", Abs ("x", TFree ("'a", []), t))];
- val s = "structure Eval_Term =\nstruct\n\n" ^
- cat_lines (map snd code) ^
- "\nopen Generated;\n\n" ^ string_of
- (Pretty.block [str "val () = Codegen.poke_eval_fn (fn () =>",
- Pretty.brk 1,
- mk_app false (mk_term_of gr "Generated" false (fastype_of t))
- [str "(result ())"],
- str ");"]) ^
- "\n\nend;\n";
- val eval_fn =
- ctxt
- |> Context.proof_map (ML_Context.exec (fn () => ML_Context.eval_text false Position.none s))
- |> get_eval_fn;
- in eval_fn () end;
-
-val (_, evaluation_oracle) = Context.>>> (Context.map_theory_result
- (Thm.add_oracle (Binding.name "evaluation", fn (ctxt, ct) =>
- let
- val thy = Proof_Context.theory_of ctxt;
- val t = Thm.term_of ct;
- in
- if Theory.subthy (Thm.theory_of_cterm ct, thy) then
- Thm.cterm_of thy (Logic.mk_equals (t, eval_term ctxt t))
- else raise CTERM ("evaluation_oracle: bad theory", [ct])
- end)));
-
-fun evaluation_conv ctxt ct = evaluation_oracle (ctxt, ct);
-
-
-(**** Interface ****)
-
-fun parse_mixfix rd s =
- (case Scan.finite Symbol.stopper (Scan.repeat
- ( $$ "_" >> K Arg
- || $$ "?" >> K Ignore
- || $$ "\\<module>" >> K Module
- || $$ "/" |-- Scan.repeat ($$ " ") >> (Pretty o Pretty.brk o length)
- || $$ "{" |-- $$ "*" |-- Scan.repeat1
- ( $$ "'" |-- Scan.one Symbol.is_regular
- || Scan.unless ($$ "*" -- $$ "}") (Scan.one Symbol.is_regular)) --|
- $$ "*" --| $$ "}" >> (Quote o rd o implode)
- || Scan.repeat1
- ( $$ "'" |-- Scan.one Symbol.is_regular
- || Scan.unless ($$ "_" || $$ "?" || $$ "\\<module>" || $$ "/" || $$ "{" |-- $$ "*")
- (Scan.one Symbol.is_regular)) >> (Pretty o str o implode)))
- (Symbol.explode s) of
- (p, []) => p
- | _ => error ("Malformed annotation: " ^ quote s));
-
-
-val _ = List.app Keyword.keyword ["attach", "file", "contains"];
-
-fun strip_whitespace s = implode (fst (take_suffix (fn c => c = "\n" orelse c = " ")
- (snd (take_prefix (fn c => c = "\n" orelse c = " ") (raw_explode s))))) ^ "\n";
-
-val parse_attach = Scan.repeat (Parse.$$$ "attach" |--
- Scan.optional (Parse.$$$ "(" |-- Parse.xname --| Parse.$$$ ")") "" --
- (Parse.verbatim >> strip_whitespace));
-
-val _ =
- Outer_Syntax.command "types_code"
- "associate types with target language types" Keyword.thy_decl
- (Scan.repeat1 (Parse.xname --| Parse.$$$ "(" -- Parse.string --| Parse.$$$ ")" -- parse_attach) >>
- (fn xs => Toplevel.theory (fn thy => fold (assoc_type o
- (fn ((name, mfx), aux) => (name, (parse_mixfix
- (Syntax.read_typ_global thy) mfx, aux)))) xs thy)));
-
-val _ =
- Outer_Syntax.command "consts_code"
- "associate constants with target language code" Keyword.thy_decl
- (Scan.repeat1
- (Parse.term --|
- Parse.$$$ "(" -- Parse.string --| Parse.$$$ ")" -- parse_attach) >>
- (fn xs => Toplevel.theory (fn thy => fold (assoc_const o
- (fn ((const, mfx), aux) =>
- (const, (parse_mixfix (Syntax.read_term_global thy) mfx, aux)))) xs thy)));
-
-fun parse_code lib =
- Scan.optional (Parse.$$$ "(" |-- Parse.enum "," Parse.xname --| Parse.$$$ ")") [] --
- (if lib then Scan.optional Parse.name "" else Parse.name) --
- Scan.option (Parse.$$$ "file" |-- Parse.name) --
- (if lib then Scan.succeed []
- else Scan.optional (Parse.$$$ "imports" |-- Scan.repeat1 Parse.name) []) --|
- Parse.$$$ "contains" --
- ( Scan.repeat1 (Parse.name --| Parse.$$$ "=" -- Parse.term)
- || Scan.repeat1 (Parse.term >> pair "")) >>
- (fn ((((mode, module), opt_fname), modules), xs) => Toplevel.theory (fn thy =>
- let
- val _ = legacy_feature "Old code generation command -- use 'export_code' instead";
- val mode' = (if lib then insert (op =) "library" else I) (remove (op =) "library" mode);
- val (code, gr) = generate_code thy mode' modules module xs;
- val thy' = thy |> Context.theory_map (ML_Context.exec (fn () =>
- (case opt_fname of
- NONE => ML_Context.eval_text false Position.none (cat_lines (map snd code))
- | SOME fname =>
- if lib then app (fn (name, s) => File.write
- (Path.append (Path.explode fname) (Path.basic (name ^ ".ML"))) s)
- (("ROOT", implode (map (fn (name, _) =>
- "use \"" ^ name ^ ".ML\";\n") code)) :: code)
- else File.write (Path.explode fname) (snd (hd code)))));
- in
- if lib then thy'
- else map_modules (Symtab.update (module, gr)) thy'
- end));
-
-val setup = add_codegen "default" default_codegen
- #> add_tycodegen "default" default_tycodegen
- #> add_preprocessor unfold_preprocessor;
-
-val _ =
- Outer_Syntax.command "code_library"
- "generate code for terms (one structure for each theory)" Keyword.thy_decl
- (parse_code true);
-
-val _ =
- Outer_Syntax.command "code_module"
- "generate code for terms (single structure, incremental)" Keyword.thy_decl
- (parse_code false);
-
-end;