src/Pure/codegen.ML
author haftmann
Tue Sep 16 09:21:22 2008 +0200 (2008-09-16)
changeset 28227 77221ee0f7b9
parent 28054 2b84d34c5d02
child 28271 0e1b07ded55f
permissions -rw-r--r--
generic value command
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(*  Title:      Pure/codegen.ML
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    ID:         $Id$
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    Author:     Stefan Berghofer, TU Muenchen
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Generic code generator.
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*)
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signature CODEGEN =
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sig
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  val quiet_mode : bool ref
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  val message : string -> unit
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  val mode : string list ref
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  val margin : int ref
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  val string_of : Pretty.T -> string
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  val str : string -> Pretty.T
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  datatype 'a mixfix =
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      Arg
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    | Ignore
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    | Module
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    | Pretty of Pretty.T
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    | Quote of 'a;
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  type deftab
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  type node
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  type codegr
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  type 'a codegen
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  val add_codegen: string -> term codegen -> theory -> theory
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  val add_tycodegen: string -> typ codegen -> theory -> theory
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  val add_preprocessor: (theory -> thm list -> thm list) -> theory -> theory
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  val preprocess: theory -> thm list -> thm list
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  val preprocess_term: theory -> term -> term
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  val print_codegens: theory -> unit
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  val generate_code: theory -> string list -> string -> (string * string) list ->
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    (string * string) list * codegr
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  val generate_code_i: theory -> string list -> string -> (string * term) list ->
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    (string * string) list * codegr
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  val assoc_const: string * (term mixfix list *
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    (string * string) list) -> theory -> theory
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  val assoc_const_i: (string * typ) * (term mixfix list *
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    (string * string) list) -> theory -> theory
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  val assoc_type: xstring * (typ mixfix list *
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    (string * string) list) -> theory -> theory
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  val get_assoc_code: theory -> string * typ ->
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    (term mixfix list * (string * string) list) option
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  val get_assoc_type: theory -> string ->
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    (typ mixfix list * (string * string) list) option
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  val codegen_error: codegr -> string -> string -> 'a
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  val invoke_codegen: theory -> deftab -> string -> string -> bool ->
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    codegr * term -> codegr * Pretty.T
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  val invoke_tycodegen: theory -> deftab -> string -> string -> bool ->
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    codegr * typ -> codegr * Pretty.T
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  val mk_id: string -> string
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  val mk_qual_id: string -> string * string -> string
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  val mk_const_id: string -> string -> codegr -> codegr * (string * string)
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  val get_const_id: string -> codegr -> string * string
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  val mk_type_id: string -> string -> codegr -> codegr * (string * string)
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  val get_type_id: string -> codegr -> string * string
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  val thyname_of_type: theory -> string -> string
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  val thyname_of_const: theory -> string -> string
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  val rename_terms: term list -> term list
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  val rename_term: term -> term
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  val new_names: term -> string list -> string list
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  val new_name: term -> string -> string
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  val if_library: 'a -> 'a -> 'a
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  val get_defn: theory -> deftab -> string -> typ ->
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    ((typ * (string * (term list * term))) * int option) option
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  val is_instance: typ -> typ -> bool
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  val parens: Pretty.T -> Pretty.T
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  val mk_app: bool -> Pretty.T -> Pretty.T list -> Pretty.T
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  val mk_tuple: Pretty.T list -> Pretty.T
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  val mk_let: (Pretty.T * Pretty.T) list -> Pretty.T -> Pretty.T
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  val eta_expand: term -> term list -> int -> term
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  val strip_tname: string -> string
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  val mk_type: bool -> typ -> Pretty.T
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  val mk_term_of: codegr -> string -> bool -> typ -> Pretty.T
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  val mk_gen: codegr -> string -> bool -> string list -> string -> typ -> Pretty.T
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  val test_fn: (int -> (string * term) list option) ref
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  val test_term: theory -> bool -> int -> int -> term -> (string * term) list option
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  val auto_quickcheck: bool ref
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  val auto_quickcheck_time_limit: int ref
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  val eval_result: (unit -> term) ref
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  val eval_term: theory -> term -> term
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  val evaluation_conv: cterm -> thm
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  val parse_mixfix: (string -> 'a) -> string -> 'a mixfix list
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  val quotes_of: 'a mixfix list -> 'a list
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  val num_args_of: 'a mixfix list -> int
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  val replace_quotes: 'b list -> 'a mixfix list -> 'b mixfix list
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  val mk_deftab: theory -> deftab
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  val add_unfold: thm -> theory -> theory
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  val get_node: codegr -> string -> node
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  val add_edge: string * string -> codegr -> codegr
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  val add_edge_acyclic: string * string -> codegr -> codegr
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  val del_nodes: string list -> codegr -> codegr
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  val map_node: string -> (node -> node) -> codegr -> codegr
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  val new_node: string * node -> codegr -> codegr
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  val setup: theory -> theory
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end;
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structure Codegen : CODEGEN =
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struct
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val quiet_mode = ref true;
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fun message s = if !quiet_mode then () else writeln s;
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val mode = ref ([] : string list);
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val margin = ref 80;
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fun string_of p = (Pretty.string_of |>
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  PrintMode.setmp [] |>
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  Pretty.setmp_margin (!margin)) p;
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val str = PrintMode.setmp [] Pretty.str;
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(**** Mixfix syntax ****)
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datatype 'a mixfix =
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    Arg
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  | Ignore
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  | Module
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  | Pretty of Pretty.T
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  | Quote of 'a;
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fun is_arg Arg = true
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  | is_arg Ignore = true
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  | is_arg _ = false;
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fun quotes_of [] = []
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  | quotes_of (Quote q :: ms) = q :: quotes_of ms
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  | quotes_of (_ :: ms) = quotes_of ms;
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fun args_of [] xs = ([], xs)
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  | args_of (Arg :: ms) (x :: xs) = apfst (cons x) (args_of ms xs)
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  | args_of (Ignore :: ms) (_ :: xs) = args_of ms xs
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  | args_of (_ :: ms) xs = args_of ms xs;
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fun num_args_of x = length (List.filter is_arg x);
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(**** theory data ****)
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(* preprocessed definition table *)
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type deftab =
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  (typ *              (* type of constant *)
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    (string *         (* name of theory containing definition of constant *)
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      (term list *    (* parameters *)
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       term)))        (* right-hand side *)
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  list Symtab.table;
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(* code dependency graph *)
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type nametab = (string * string) Symtab.table * unit Symtab.table;
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fun merge_nametabs ((tab, used) : nametab, (tab', used')) =
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  (Symtab.merge op = (tab, tab'), Symtab.merge op = (used, used'));
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type node =
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  (exn option *    (* slot for arbitrary data *)
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   string *        (* name of structure containing piece of code *)
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   string);        (* piece of code *)
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type codegr =
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  node Graph.T *
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  (nametab *       (* table for assigned constant names *)
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   nametab);       (* table for assigned type names *)
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val emptygr : codegr = (Graph.empty,
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  ((Symtab.empty, Symtab.empty), (Symtab.empty, Symtab.empty)));
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(* type of code generators *)
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type 'a codegen =
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  theory ->    (* theory in which generate_code was called *)
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  deftab ->    (* definition table (for efficiency) *)
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  codegr ->    (* code dependency graph *)
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  string ->    (* node name of caller (for recording dependencies) *)
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  string ->    (* module name of caller (for modular code generation) *)
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  bool ->      (* whether to parenthesize generated expression *)
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  'a ->        (* item to generate code from *)
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  (codegr * Pretty.T) option;
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(* parameters for random testing *)
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type test_params =
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  {size: int, iterations: int, default_type: typ option};
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fun merge_test_params
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  {size = size1, iterations = iterations1, default_type = default_type1}
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  {size = size2, iterations = iterations2, default_type = default_type2} =
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  {size = Int.max (size1, size2),
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   iterations = Int.max (iterations1, iterations2),
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   default_type = case default_type1 of
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       NONE => default_type2
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     | _ => default_type1};
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val default_test_params : test_params =
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  {size = 10, iterations = 100, default_type = NONE};
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fun set_size size ({iterations, default_type, ...} : test_params) =
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  {size = size, iterations = iterations, default_type = default_type};
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fun set_iterations iterations ({size, default_type, ...} : test_params) =
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  {size = size, iterations = iterations, default_type = default_type};
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fun set_default_type s thy ({size, iterations, ...} : test_params) =
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  {size = size, iterations = iterations,
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   default_type = SOME (Syntax.read_typ_global thy s)};
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(* theory data *)
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structure CodegenData = TheoryDataFun
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(
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  type T =
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    {codegens : (string * term codegen) list,
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     tycodegens : (string * typ codegen) list,
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     consts : ((string * typ) * (term mixfix list * (string * string) list)) list,
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     types : (string * (typ mixfix list * (string * string) list)) list,
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     preprocs: (stamp * (theory -> thm list -> thm list)) list,
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     modules: codegr Symtab.table,
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     test_params: test_params};
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  val empty =
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    {codegens = [], tycodegens = [], consts = [], types = [],
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     preprocs = [], modules = Symtab.empty, test_params = default_test_params};
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  val copy = I;
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  val extend = I;
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  fun merge _
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    ({codegens = codegens1, tycodegens = tycodegens1,
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      consts = consts1, types = types1,
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      preprocs = preprocs1, modules = modules1, test_params = test_params1} : T,
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     {codegens = codegens2, tycodegens = tycodegens2,
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      consts = consts2, types = types2,
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      preprocs = preprocs2, modules = modules2, test_params = test_params2}) =
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    {codegens = AList.merge (op =) (K true) (codegens1, codegens2),
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     tycodegens = AList.merge (op =) (K true) (tycodegens1, tycodegens2),
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     consts = AList.merge (op =) (K true) (consts1, consts2),
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     types = AList.merge (op =) (K true) (types1, types2),
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     preprocs = AList.merge (op =) (K true) (preprocs1, preprocs2),
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     modules = Symtab.merge (K true) (modules1, modules2),
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     test_params = merge_test_params test_params1 test_params2};
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);
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fun print_codegens thy =
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  let val {codegens, tycodegens, ...} = CodegenData.get thy in
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    Pretty.writeln (Pretty.chunks
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      [Pretty.strs ("term code generators:" :: map fst codegens),
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       Pretty.strs ("type code generators:" :: map fst tycodegens)])
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  end;
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(**** access parameters for random testing ****)
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fun get_test_params thy = #test_params (CodegenData.get thy);
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fun map_test_params f thy =
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  let val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
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    CodegenData.get thy;
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  in CodegenData.put {codegens = codegens, tycodegens = tycodegens,
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    consts = consts, types = types, preprocs = preprocs,
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    modules = modules, test_params = f test_params} thy
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  end;
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(**** access modules ****)
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fun get_modules thy = #modules (CodegenData.get thy);
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fun map_modules f thy =
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  let val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
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    CodegenData.get thy;
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  in CodegenData.put {codegens = codegens, tycodegens = tycodegens,
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    consts = consts, types = types, preprocs = preprocs,
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    modules = f modules, test_params = test_params} thy
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  end;
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(**** add new code generators to theory ****)
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fun add_codegen name f thy =
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  let val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
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    CodegenData.get thy
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  in (case AList.lookup (op =) codegens name of
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      NONE => CodegenData.put {codegens = (name, f) :: codegens,
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        tycodegens = tycodegens, consts = consts, types = types,
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        preprocs = preprocs, modules = modules,
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        test_params = test_params} thy
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    | SOME _ => error ("Code generator " ^ name ^ " already declared"))
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  end;
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fun add_tycodegen name f thy =
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  let val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
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    CodegenData.get thy
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  in (case AList.lookup (op =) tycodegens name of
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      NONE => CodegenData.put {tycodegens = (name, f) :: tycodegens,
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        codegens = codegens, consts = consts, types = types,
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        preprocs = preprocs, modules = modules,
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        test_params = test_params} thy
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    | SOME _ => error ("Code generator " ^ name ^ " already declared"))
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  end;
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(**** preprocessors ****)
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fun add_preprocessor p thy =
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  let val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
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    CodegenData.get thy
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  in CodegenData.put {tycodegens = tycodegens,
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    codegens = codegens, consts = consts, types = types,
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    preprocs = (stamp (), p) :: preprocs,
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    modules = modules, test_params = test_params} thy
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  end;
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fun preprocess thy =
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  let val {preprocs, ...} = CodegenData.get thy
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  in fold (fn (_, f) => f thy) preprocs end;
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fun preprocess_term thy t =
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  let
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    val x = Free (Name.variant (add_term_names (t, [])) "x", fastype_of t);
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    (* fake definition *)
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    val eq = setmp quick_and_dirty true (SkipProof.make_thm thy)
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      (Logic.mk_equals (x, t));
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    fun err () = error "preprocess_term: bad preprocessor"
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  in case map prop_of (preprocess thy [eq]) of
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      [Const ("==", _) $ x' $ t'] => if x = x' then t' else err ()
berghofe@17549
   334
    | _ => err ()
berghofe@17549
   335
  end;
haftmann@18281
   336
haftmann@19341
   337
fun add_unfold eqn =
berghofe@15261
   338
  let
haftmann@22749
   339
    val thy = Thm.theory_of_thm eqn;
haftmann@22749
   340
    val ctxt = ProofContext.init thy;
haftmann@22749
   341
    val eqn' = LocalDefs.meta_rewrite_rule ctxt eqn;
haftmann@22749
   342
    val names = term_consts (fst (Logic.dest_equals (prop_of eqn')));
berghofe@15261
   343
    fun prep thy = map (fn th =>
berghofe@17666
   344
      let val prop = prop_of th
berghofe@17666
   345
      in
berghofe@17666
   346
        if forall (fn name => exists_Const (equal name o fst) prop) names
haftmann@22749
   347
        then rewrite_rule [eqn'] (Thm.transfer thy th)
berghofe@17666
   348
        else th
berghofe@17666
   349
      end)
haftmann@19341
   350
  in add_preprocessor prep end;
berghofe@15261
   351
berghofe@15261
   352
berghofe@11520
   353
(**** associate constants with target language code ****)
berghofe@11520
   354
haftmann@22921
   355
fun gen_assoc_const prep_const (raw_const, syn) thy =
berghofe@11520
   356
  let
haftmann@24219
   357
    val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
berghofe@14105
   358
      CodegenData.get thy;
haftmann@22921
   359
    val (cname, T) = prep_const thy raw_const;
berghofe@11520
   360
  in
haftmann@22921
   361
    if num_args_of (fst syn) > length (binder_types T) then
haftmann@22921
   362
      error ("More arguments than in corresponding type of " ^ cname)
haftmann@22921
   363
    else case AList.lookup (op =) consts (cname, T) of
haftmann@22921
   364
      NONE => CodegenData.put {codegens = codegens,
haftmann@22921
   365
        tycodegens = tycodegens,
haftmann@22921
   366
        consts = ((cname, T), syn) :: consts,
haftmann@24219
   367
        types = types, preprocs = preprocs,
haftmann@22921
   368
        modules = modules, test_params = test_params} thy
haftmann@22921
   369
    | SOME _ => error ("Constant " ^ cname ^ " already associated with code")
haftmann@22921
   370
  end;
berghofe@11520
   371
haftmann@22921
   372
val assoc_const_i = gen_assoc_const (K I);
haftmann@28054
   373
val assoc_const = gen_assoc_const Code_Unit.read_bare_const;
berghofe@11520
   374
wenzelm@15801
   375
berghofe@11520
   376
(**** associate types with target language types ****)
berghofe@11520
   377
haftmann@22921
   378
fun assoc_type (s, syn) thy =
berghofe@11520
   379
  let
haftmann@24219
   380
    val {codegens, tycodegens, consts, types, preprocs, modules, test_params} =
berghofe@14105
   381
      CodegenData.get thy;
haftmann@22921
   382
    val tc = Sign.intern_type thy s;
berghofe@11520
   383
  in
berghofe@18320
   384
    case Symtab.lookup (snd (#types (Type.rep_tsig (Sign.tsig_of thy)))) tc of
haftmann@27302
   385
      SOME ((Type.LogicalType i, _), _) =>
berghofe@18320
   386
        if num_args_of (fst syn) > i then
berghofe@18320
   387
          error ("More arguments than corresponding type constructor " ^ s)
berghofe@18320
   388
        else (case AList.lookup (op =) types tc of
berghofe@18320
   389
          NONE => CodegenData.put {codegens = codegens,
berghofe@18320
   390
            tycodegens = tycodegens, consts = consts,
haftmann@24219
   391
            types = (tc, syn) :: types,
berghofe@18320
   392
            preprocs = preprocs, modules = modules, test_params = test_params} thy
berghofe@18320
   393
        | SOME _ => error ("Type " ^ tc ^ " already associated with code"))
berghofe@18320
   394
    | _ => error ("Not a type constructor: " ^ s)
haftmann@22921
   395
  end;
berghofe@11520
   396
haftmann@21098
   397
fun get_assoc_type thy = AList.lookup (op =) ((#types o CodegenData.get) thy);
wenzelm@11546
   398
berghofe@11520
   399
berghofe@11520
   400
(**** make valid ML identifiers ****)
berghofe@11520
   401
berghofe@14858
   402
fun is_ascii_letdig x = Symbol.is_ascii_letter x orelse
berghofe@14858
   403
  Symbol.is_ascii_digit x orelse Symbol.is_ascii_quasi x;
berghofe@14858
   404
berghofe@14858
   405
fun dest_sym s = (case split_last (snd (take_prefix (equal "\\") (explode s))) of
berghofe@14858
   406
    ("<" :: "^" :: xs, ">") => (true, implode xs)
berghofe@14858
   407
  | ("<" :: xs, ">") => (false, implode xs)
berghofe@14858
   408
  | _ => sys_error "dest_sym");
wenzelm@16458
   409
berghofe@14858
   410
fun mk_id s = if s = "" then "" else
berghofe@11520
   411
  let
berghofe@14858
   412
    fun check_str [] = []
berghofe@14858
   413
      | check_str xs = (case take_prefix is_ascii_letdig xs of
berghofe@14858
   414
          ([], " " :: zs) => check_str zs
berghofe@14858
   415
        | ([], z :: zs) =>
berghofe@14858
   416
          if size z = 1 then string_of_int (ord z) :: check_str zs
berghofe@14858
   417
          else (case dest_sym z of
berghofe@14858
   418
              (true, "isub") => check_str zs
berghofe@14858
   419
            | (true, "isup") => "" :: check_str zs
berghofe@14858
   420
            | (ctrl, s') => (if ctrl then "ctrl_" ^ s' else s') :: check_str zs)
berghofe@14858
   421
        | (ys, zs) => implode ys :: check_str zs);
wenzelm@21858
   422
    val s' = space_implode "_" (maps (check_str o Symbol.explode) (NameSpace.explode s))
berghofe@11520
   423
  in
berghofe@14858
   424
    if Symbol.is_ascii_letter (hd (explode s')) then s' else "id_" ^ s'
berghofe@11520
   425
  end;
berghofe@11520
   426
berghofe@17144
   427
fun mk_long_id (p as (tab, used)) module s =
berghofe@16649
   428
  let
berghofe@17144
   429
    fun find_name [] = sys_error "mk_long_id"
berghofe@17144
   430
      | find_name (ys :: yss) =
berghofe@17144
   431
          let
wenzelm@21858
   432
            val s' = NameSpace.implode ys
berghofe@17144
   433
            val s'' = NameSpace.append module s'
wenzelm@17412
   434
          in case Symtab.lookup used s'' of
wenzelm@17261
   435
              NONE => ((module, s'),
wenzelm@17412
   436
                (Symtab.update_new (s, (module, s')) tab,
wenzelm@17412
   437
                 Symtab.update_new (s'', ()) used))
berghofe@17144
   438
            | SOME _ => find_name yss
berghofe@17144
   439
          end
wenzelm@17412
   440
  in case Symtab.lookup tab s of
wenzelm@21858
   441
      NONE => find_name (Library.suffixes1 (NameSpace.explode s))
berghofe@17144
   442
    | SOME name => (name, p)
berghofe@16649
   443
  end;
berghofe@16649
   444
berghofe@17144
   445
(* module:  module name for caller                                        *)
berghofe@17144
   446
(* module': module name for callee                                        *)
berghofe@17144
   447
(* if caller and callee reside in different modules, use qualified access *)
berghofe@16649
   448
berghofe@17144
   449
fun mk_qual_id module (module', s) =
berghofe@17144
   450
  if module = module' orelse module' = "" then s else module' ^ "." ^ s;
berghofe@17144
   451
berghofe@17144
   452
fun mk_const_id module cname (gr, (tab1, tab2)) =
berghofe@16649
   453
  let
berghofe@17144
   454
    val ((module, s), tab1') = mk_long_id tab1 module cname
berghofe@17144
   455
    val s' = mk_id s;
wenzelm@21478
   456
    val s'' = if ML_Syntax.is_reserved s' then s' ^ "_const" else s'
berghofe@17144
   457
  in ((gr, (tab1', tab2)), (module, s'')) end;
berghofe@13073
   458
berghofe@17144
   459
fun get_const_id cname (gr, (tab1, tab2)) =
wenzelm@17412
   460
  case Symtab.lookup (fst tab1) cname of
berghofe@17144
   461
    NONE => error ("get_const_id: no such constant: " ^ quote cname)
berghofe@17144
   462
  | SOME (module, s) =>
berghofe@17144
   463
      let
berghofe@17144
   464
        val s' = mk_id s;
wenzelm@21478
   465
        val s'' = if ML_Syntax.is_reserved s' then s' ^ "_const" else s'
berghofe@17144
   466
      in (module, s'') end;
berghofe@17144
   467
berghofe@17144
   468
fun mk_type_id module tyname (gr, (tab1, tab2)) =
berghofe@16649
   469
  let
berghofe@17144
   470
    val ((module, s), tab2') = mk_long_id tab2 module tyname
berghofe@17144
   471
    val s' = mk_id s;
wenzelm@21478
   472
    val s'' = if ML_Syntax.is_reserved s' then s' ^ "_type" else s'
berghofe@17144
   473
  in ((gr, (tab1, tab2')), (module, s'')) end;
berghofe@16649
   474
berghofe@17144
   475
fun get_type_id tyname (gr, (tab1, tab2)) =
wenzelm@17412
   476
  case Symtab.lookup (fst tab2) tyname of
berghofe@17144
   477
    NONE => error ("get_type_id: no such type: " ^ quote tyname)
berghofe@17144
   478
  | SOME (module, s) =>
berghofe@17144
   479
      let
berghofe@17144
   480
        val s' = mk_id s;
wenzelm@21478
   481
        val s'' = if ML_Syntax.is_reserved s' then s' ^ "_type" else s'
berghofe@17144
   482
      in (module, s'') end;
berghofe@17144
   483
berghofe@17144
   484
fun get_type_id' f tyname tab = apsnd f (get_type_id tyname tab);
berghofe@17144
   485
berghofe@17144
   486
fun get_node (gr, x) k = Graph.get_node gr k;
berghofe@17144
   487
fun add_edge e (gr, x) = (Graph.add_edge e gr, x);
berghofe@17144
   488
fun add_edge_acyclic e (gr, x) = (Graph.add_edge_acyclic e gr, x);
berghofe@17144
   489
fun del_nodes ks (gr, x) = (Graph.del_nodes ks gr, x);
berghofe@17144
   490
fun map_node k f (gr, x) = (Graph.map_node k f gr, x);
berghofe@17144
   491
fun new_node p (gr, x) = (Graph.new_node p gr, x);
berghofe@16649
   492
haftmann@27398
   493
fun thyname_of thy f x = the (AList.lookup (op =) (f x) Markup.theory_nameN);
berghofe@16649
   494
haftmann@27398
   495
fun thyname_of_type thy =
haftmann@27398
   496
  thyname_of thy (Type.the_tags (Sign.tsig_of thy));
berghofe@16649
   497
haftmann@27398
   498
fun thyname_of_const thy =
haftmann@27398
   499
  thyname_of thy (Consts.the_tags (Sign.consts_of thy));
berghofe@11520
   500
berghofe@13731
   501
fun rename_terms ts =
berghofe@11520
   502
  let
wenzelm@23178
   503
    val names = List.foldr add_term_names
wenzelm@20286
   504
      (map (fst o fst) (rev (fold Term.add_vars ts []))) ts;
wenzelm@21478
   505
    val reserved = filter ML_Syntax.is_reserved names;
wenzelm@19482
   506
    val (illegal, alt_names) = split_list (map_filter (fn s =>
skalberg@15531
   507
      let val s' = mk_id s in if s = s' then NONE else SOME (s, s') end) names)
berghofe@14858
   508
    val ps = (reserved @ illegal) ~~
wenzelm@20071
   509
      Name.variant_list names (map (suffix "'") reserved @ alt_names);
berghofe@11520
   510
haftmann@17521
   511
    fun rename_id s = AList.lookup (op =) ps s |> the_default s;
berghofe@14858
   512
berghofe@14858
   513
    fun rename (Var ((a, i), T)) = Var ((rename_id a, i), T)
berghofe@14858
   514
      | rename (Free (a, T)) = Free (rename_id a, T)
berghofe@11520
   515
      | rename (Abs (s, T, t)) = Abs (s, T, rename t)
berghofe@11520
   516
      | rename (t $ u) = rename t $ rename u
berghofe@11520
   517
      | rename t = t;
berghofe@11520
   518
  in
berghofe@13731
   519
    map rename ts
berghofe@13731
   520
  end;
berghofe@13731
   521
berghofe@13731
   522
val rename_term = hd o rename_terms o single;
berghofe@13731
   523
berghofe@13731
   524
berghofe@13731
   525
(**** retrieve definition of constant ****)
berghofe@13731
   526
wenzelm@24908
   527
fun is_instance T1 T2 =
wenzelm@24908
   528
  Type.raw_instance (T1, Logic.legacy_varifyT T2);
berghofe@13731
   529
haftmann@22921
   530
fun get_assoc_code thy (s, T) = Option.map snd (find_first (fn ((s', T'), _) =>
wenzelm@24908
   531
  s = s' andalso is_instance T T') (#consts (CodegenData.get thy)));
berghofe@13731
   532
wenzelm@19482
   533
fun get_aux_code xs = map_filter (fn (m, code) =>
wenzelm@20665
   534
  if m = "" orelse member (op =) (!mode) m then SOME code else NONE) xs;
berghofe@16769
   535
berghofe@16649
   536
fun mk_deftab thy =
berghofe@13731
   537
  let
wenzelm@22680
   538
    val axmss = map (fn thy' => (Context.theory_name thy', Theory.axiom_table thy'))
berghofe@16649
   539
      (thy :: Theory.ancestors_of thy);
berghofe@15261
   540
    fun prep_def def = (case preprocess thy [def] of
berghofe@16649
   541
      [def'] => prop_of def' | _ => error "mk_deftab: bad preprocessor");
berghofe@15261
   542
    fun dest t =
berghofe@15261
   543
      let
berghofe@15261
   544
        val (lhs, rhs) = Logic.dest_equals t;
berghofe@15261
   545
        val (c, args) = strip_comb lhs;
berghofe@16649
   546
        val (s, T) = dest_Const c
berghofe@16649
   547
      in if forall is_Var args then SOME (s, (T, (args, rhs))) else NONE
skalberg@15531
   548
      end handle TERM _ => NONE;
haftmann@21056
   549
    fun add_def thyname (name, t) = (case dest t of
haftmann@21056
   550
        NONE => I
wenzelm@24908
   551
      | SOME _ => (case dest (prep_def (Thm.get_axiom_i thy name)) of
haftmann@21056
   552
          NONE => I
haftmann@21056
   553
        | SOME (s, (T, (args, rhs))) => Symtab.map_default (s, [])
haftmann@21056
   554
            (cons (T, (thyname, split_last (rename_terms (args @ [rhs])))))))
berghofe@13731
   555
  in
haftmann@21056
   556
    fold (fn (thyname, axms) => Symtab.fold (add_def thyname) axms) axmss Symtab.empty
berghofe@11520
   557
  end;
berghofe@11520
   558
wenzelm@17412
   559
fun get_defn thy defs s T = (case Symtab.lookup defs s of
berghofe@16649
   560
    NONE => NONE
berghofe@16649
   561
  | SOME ds =>
wenzelm@24908
   562
      let val i = find_index (is_instance T o fst) ds
berghofe@16649
   563
      in if i >= 0 then
berghofe@16649
   564
          SOME (List.nth (ds, i), if length ds = 1 then NONE else SOME i)
berghofe@16649
   565
        else NONE
berghofe@16649
   566
      end);
berghofe@16649
   567
berghofe@11520
   568
berghofe@12452
   569
(**** invoke suitable code generator for term / type ****)
berghofe@11520
   570
berghofe@17144
   571
fun codegen_error (gr, _) dep s =
berghofe@17144
   572
  error (s ^ "\nrequired by:\n" ^ commas (Graph.all_succs gr [dep]));
berghofe@17144
   573
berghofe@17144
   574
fun invoke_codegen thy defs dep module brack (gr, t) = (case get_first
berghofe@17144
   575
   (fn (_, f) => f thy defs gr dep module brack t) (#codegens (CodegenData.get thy)) of
berghofe@17144
   576
      NONE => codegen_error gr dep ("Unable to generate code for term:\n" ^
wenzelm@26939
   577
        Syntax.string_of_term_global thy t)
skalberg@15531
   578
    | SOME x => x);
berghofe@12452
   579
berghofe@17144
   580
fun invoke_tycodegen thy defs dep module brack (gr, T) = (case get_first
berghofe@17144
   581
   (fn (_, f) => f thy defs gr dep module brack T) (#tycodegens (CodegenData.get thy)) of
berghofe@17144
   582
      NONE => codegen_error gr dep ("Unable to generate code for type:\n" ^
wenzelm@26939
   583
        Syntax.string_of_typ_global thy T)
skalberg@15531
   584
    | SOME x => x);
berghofe@11520
   585
berghofe@11520
   586
berghofe@11520
   587
(**** code generator for mixfix expressions ****)
berghofe@11520
   588
berghofe@26974
   589
fun parens p = Pretty.block [str "(", p, str ")"];
berghofe@11520
   590
berghofe@11520
   591
fun pretty_fn [] p = [p]
berghofe@26974
   592
  | pretty_fn (x::xs) p = str ("fn " ^ x ^ " =>") ::
berghofe@11520
   593
      Pretty.brk 1 :: pretty_fn xs p;
berghofe@11520
   594
berghofe@16769
   595
fun pretty_mixfix _ _ [] [] _ = []
berghofe@16769
   596
  | pretty_mixfix module module' (Arg :: ms) (p :: ps) qs =
berghofe@16769
   597
      p :: pretty_mixfix module module' ms ps qs
berghofe@16769
   598
  | pretty_mixfix module module' (Ignore :: ms) ps qs =
berghofe@16769
   599
      pretty_mixfix module module' ms ps qs
berghofe@16769
   600
  | pretty_mixfix module module' (Module :: ms) ps qs =
berghofe@17144
   601
      (if module <> module'
berghofe@26974
   602
       then cons (str (module' ^ ".")) else I)
berghofe@16769
   603
      (pretty_mixfix module module' ms ps qs)
berghofe@16769
   604
  | pretty_mixfix module module' (Pretty p :: ms) ps qs =
berghofe@16769
   605
      p :: pretty_mixfix module module' ms ps qs
berghofe@16769
   606
  | pretty_mixfix module module' (Quote _ :: ms) ps (q :: qs) =
berghofe@16769
   607
      q :: pretty_mixfix module module' ms ps qs;
berghofe@11520
   608
haftmann@18102
   609
fun replace_quotes [] [] = []
haftmann@18102
   610
  | replace_quotes xs (Arg :: ms) =
haftmann@18102
   611
      Arg :: replace_quotes xs ms
haftmann@18102
   612
  | replace_quotes xs (Ignore :: ms) =
haftmann@18102
   613
      Ignore :: replace_quotes xs ms
haftmann@18102
   614
  | replace_quotes xs (Module :: ms) =
haftmann@18102
   615
      Module :: replace_quotes xs ms
haftmann@18102
   616
  | replace_quotes xs (Pretty p :: ms) =
haftmann@18102
   617
      Pretty p :: replace_quotes xs ms
haftmann@18102
   618
  | replace_quotes (x::xs) (Quote _ :: ms) =
haftmann@18102
   619
      Quote x :: replace_quotes xs ms;
haftmann@18102
   620
berghofe@11520
   621
berghofe@12452
   622
(**** default code generators ****)
berghofe@11520
   623
berghofe@11520
   624
fun eta_expand t ts i =
berghofe@11520
   625
  let
berghofe@24456
   626
    val k = length ts;
berghofe@24456
   627
    val Ts = Library.drop (k, binder_types (fastype_of t));
berghofe@24456
   628
    val j = i - k
berghofe@11520
   629
  in
wenzelm@23178
   630
    List.foldr (fn (T, t) => Abs ("x", T, t))
skalberg@15574
   631
      (list_comb (t, ts @ map Bound (j-1 downto 0))) (Library.take (j, Ts))
berghofe@11520
   632
  end;
berghofe@11520
   633
berghofe@11520
   634
fun mk_app _ p [] = p
berghofe@11520
   635
  | mk_app brack p ps = if brack then
berghofe@26974
   636
       Pretty.block (str "(" ::
berghofe@26974
   637
         separate (Pretty.brk 1) (p :: ps) @ [str ")"])
berghofe@11520
   638
     else Pretty.block (separate (Pretty.brk 1) (p :: ps));
berghofe@11520
   639
wenzelm@20071
   640
fun new_names t xs = Name.variant_list
wenzelm@20071
   641
  (map (fst o fst o dest_Var) (term_vars t) union
wenzelm@21719
   642
    add_term_names (t, ML_Syntax.reserved_names)) (map mk_id xs);
berghofe@11520
   643
berghofe@11520
   644
fun new_name t x = hd (new_names t [x]);
berghofe@11520
   645
wenzelm@20665
   646
fun if_library x y = if member (op =) (!mode) "library" then x else y;
berghofe@17144
   647
berghofe@17144
   648
fun default_codegen thy defs gr dep module brack t =
berghofe@11520
   649
  let
berghofe@11520
   650
    val (u, ts) = strip_comb t;
berghofe@17144
   651
    fun codegens brack = foldl_map (invoke_codegen thy defs dep module brack)
berghofe@11520
   652
  in (case u of
berghofe@14105
   653
      Var ((s, i), T) =>
berghofe@14105
   654
        let
berghofe@14105
   655
          val (gr', ps) = codegens true (gr, ts);
berghofe@17144
   656
          val (gr'', _) = invoke_tycodegen thy defs dep module false (gr', T)
berghofe@26974
   657
        in SOME (gr'', mk_app brack (str (s ^
berghofe@11520
   658
           (if i=0 then "" else string_of_int i))) ps)
berghofe@11520
   659
        end
berghofe@11520
   660
berghofe@14105
   661
    | Free (s, T) =>
berghofe@14105
   662
        let
berghofe@14105
   663
          val (gr', ps) = codegens true (gr, ts);
berghofe@17144
   664
          val (gr'', _) = invoke_tycodegen thy defs dep module false (gr', T)
berghofe@26974
   665
        in SOME (gr'', mk_app brack (str s) ps) end
berghofe@11520
   666
berghofe@11520
   667
    | Const (s, T) =>
haftmann@22921
   668
      (case get_assoc_code thy (s, T) of
berghofe@16769
   669
         SOME (ms, aux) =>
haftmann@18281
   670
           let val i = num_args_of ms
berghofe@11520
   671
           in if length ts < i then
berghofe@17144
   672
               default_codegen thy defs gr dep module brack (eta_expand u ts i)
berghofe@11520
   673
             else
berghofe@11520
   674
               let
berghofe@12452
   675
                 val (ts1, ts2) = args_of ms ts;
berghofe@12452
   676
                 val (gr1, ps1) = codegens false (gr, ts1);
berghofe@12452
   677
                 val (gr2, ps2) = codegens true (gr1, ts2);
berghofe@27758
   678
                 val (gr3, ps3) = codegens false (gr2, quotes_of ms);
berghofe@17549
   679
                 val (gr4, _) = invoke_tycodegen thy defs dep module false
berghofe@17549
   680
                   (gr3, funpow (length ts) (hd o tl o snd o dest_Type) T);
berghofe@17144
   681
                 val (module', suffix) = (case get_defn thy defs s T of
haftmann@27398
   682
                     NONE => (if_library (thyname_of_const thy s) module, "")
berghofe@17144
   683
                   | SOME ((U, (module', _)), NONE) =>
berghofe@17144
   684
                       (if_library module' module, "")
berghofe@17144
   685
                   | SOME ((U, (module', _)), SOME i) =>
berghofe@17144
   686
                       (if_library module' module, " def" ^ string_of_int i));
berghofe@16769
   687
                 val node_id = s ^ suffix;
berghofe@17144
   688
                 fun p module' = mk_app brack (Pretty.block
berghofe@17144
   689
                   (pretty_mixfix module module' ms ps1 ps3)) ps2
berghofe@17549
   690
               in SOME (case try (get_node gr4) node_id of
berghofe@16769
   691
                   NONE => (case get_aux_code aux of
berghofe@17549
   692
                       [] => (gr4, p module)
berghofe@17144
   693
                     | xs => (add_edge (node_id, dep) (new_node
wenzelm@26931
   694
                         (node_id, (NONE, module', cat_lines xs ^ "\n")) gr4),
berghofe@17144
   695
                           p module'))
berghofe@17144
   696
                 | SOME (_, module'', _) =>
berghofe@17549
   697
                     (add_edge (node_id, dep) gr4, p module''))
berghofe@11520
   698
               end
berghofe@11520
   699
           end
berghofe@16649
   700
       | NONE => (case get_defn thy defs s T of
skalberg@15531
   701
           NONE => NONE
berghofe@17144
   702
         | SOME ((U, (thyname, (args, rhs))), k) =>
berghofe@11520
   703
             let
berghofe@17144
   704
               val module' = if_library thyname module;
berghofe@17144
   705
               val suffix = (case k of NONE => "" | SOME i => " def" ^ string_of_int i);
berghofe@16649
   706
               val node_id = s ^ suffix;
berghofe@17144
   707
               val (gr', (ps, def_id)) = codegens true (gr, ts) |>>>
berghofe@17144
   708
                 mk_const_id module' (s ^ suffix);
berghofe@26974
   709
               val p = mk_app brack (str (mk_qual_id module def_id)) ps
berghofe@17144
   710
             in SOME (case try (get_node gr') node_id of
berghofe@17144
   711
                 NONE =>
berghofe@17144
   712
                   let
berghofe@17144
   713
                     val _ = message ("expanding definition of " ^ s);
berghofe@18788
   714
                     val (Ts, _) = strip_type U;
berghofe@17144
   715
                     val (args', rhs') =
berghofe@17144
   716
                       if not (null args) orelse null Ts then (args, rhs) else
berghofe@17144
   717
                         let val v = Free (new_name rhs "x", hd Ts)
berghofe@17144
   718
                         in ([v], betapply (rhs, v)) end;
berghofe@17144
   719
                     val (gr1, p') = invoke_codegen thy defs node_id module' false
berghofe@17144
   720
                       (add_edge (node_id, dep)
berghofe@17144
   721
                          (new_node (node_id, (NONE, "", "")) gr'), rhs');
berghofe@17144
   722
                     val (gr2, xs) = codegens false (gr1, args');
berghofe@17144
   723
                     val (gr3, _) = invoke_tycodegen thy defs dep module false (gr2, T);
berghofe@17144
   724
                     val (gr4, ty) = invoke_tycodegen thy defs node_id module' false (gr3, U);
berghofe@26974
   725
                   in (map_node node_id (K (NONE, module', string_of
berghofe@17144
   726
                       (Pretty.block (separate (Pretty.brk 1)
berghofe@17144
   727
                         (if null args' then
berghofe@26974
   728
                            [str ("val " ^ snd def_id ^ " :"), ty]
berghofe@26974
   729
                          else str ("fun " ^ snd def_id) :: xs) @
berghofe@26974
   730
                        [str " =", Pretty.brk 1, p', str ";"])) ^ "\n\n")) gr4,
berghofe@17144
   731
                     p)
berghofe@17144
   732
                   end
berghofe@17144
   733
               | SOME _ => (add_edge (node_id, dep) gr', p))
berghofe@11520
   734
             end))
berghofe@11520
   735
berghofe@11520
   736
    | Abs _ =>
berghofe@11520
   737
      let
berghofe@11520
   738
        val (bs, Ts) = ListPair.unzip (strip_abs_vars u);
berghofe@11520
   739
        val t = strip_abs_body u
berghofe@11520
   740
        val bs' = new_names t bs;
berghofe@12452
   741
        val (gr1, ps) = codegens true (gr, ts);
berghofe@17144
   742
        val (gr2, p) = invoke_codegen thy defs dep module false
berghofe@12452
   743
          (gr1, subst_bounds (map Free (rev (bs' ~~ Ts)), t));
berghofe@11520
   744
      in
berghofe@26974
   745
        SOME (gr2, mk_app brack (Pretty.block (str "(" :: pretty_fn bs' p @
berghofe@26974
   746
          [str ")"])) ps)
berghofe@11520
   747
      end
berghofe@11520
   748
skalberg@15531
   749
    | _ => NONE)
berghofe@11520
   750
  end;
berghofe@11520
   751
berghofe@17144
   752
fun default_tycodegen thy defs gr dep module brack (TVar ((s, i), _)) =
berghofe@26974
   753
      SOME (gr, str (s ^ (if i = 0 then "" else string_of_int i)))
berghofe@17144
   754
  | default_tycodegen thy defs gr dep module brack (TFree (s, _)) =
berghofe@26974
   755
      SOME (gr, str s)
berghofe@17144
   756
  | default_tycodegen thy defs gr dep module brack (Type (s, Ts)) =
haftmann@17521
   757
      (case AList.lookup (op =) ((#types o CodegenData.get) thy) s of
skalberg@15531
   758
         NONE => NONE
berghofe@16769
   759
       | SOME (ms, aux) =>
berghofe@12452
   760
           let
berghofe@12452
   761
             val (gr', ps) = foldl_map
berghofe@17144
   762
               (invoke_tycodegen thy defs dep module false)
berghofe@16649
   763
               (gr, fst (args_of ms Ts));
berghofe@12452
   764
             val (gr'', qs) = foldl_map
berghofe@17144
   765
               (invoke_tycodegen thy defs dep module false)
berghofe@16769
   766
               (gr', quotes_of ms);
haftmann@27398
   767
             val module' = if_library (thyname_of_type thy s) module;
berghofe@16769
   768
             val node_id = s ^ " (type)";
berghofe@17144
   769
             fun p module' = Pretty.block (pretty_mixfix module module' ms ps qs)
berghofe@17144
   770
           in SOME (case try (get_node gr'') node_id of
berghofe@16769
   771
               NONE => (case get_aux_code aux of
berghofe@17144
   772
                   [] => (gr'', p module')
berghofe@17144
   773
                 | xs => (fst (mk_type_id module' s
berghofe@17144
   774
                       (add_edge (node_id, dep) (new_node (node_id,
wenzelm@26931
   775
                         (NONE, module', cat_lines xs ^ "\n")) gr''))),
berghofe@17144
   776
                     p module'))
berghofe@17144
   777
             | SOME (_, module'', _) =>
berghofe@17144
   778
                 (add_edge (node_id, dep) gr'', p module''))
berghofe@16769
   779
           end);
berghofe@12452
   780
berghofe@25892
   781
fun mk_tuple [p] = p
berghofe@26974
   782
  | mk_tuple ps = Pretty.block (str "(" ::
berghofe@26974
   783
      List.concat (separate [str ",", Pretty.brk 1] (map single ps)) @
berghofe@26974
   784
        [str ")"]);
berghofe@25892
   785
berghofe@25892
   786
fun mk_let bindings body =
berghofe@26974
   787
  Pretty.blk (0, [str "let", Pretty.brk 1,
berghofe@25892
   788
    Pretty.blk (0, separate Pretty.fbrk (map (fn (pat, rhs) =>
berghofe@26974
   789
      Pretty.block [str "val ", pat, str " =", Pretty.brk 1,
berghofe@26974
   790
      rhs, str ";"]) bindings)),
berghofe@26974
   791
    Pretty.brk 1, str "in", Pretty.brk 1, body,
berghofe@26974
   792
    Pretty.brk 1, str "end"]);
berghofe@25892
   793
berghofe@16649
   794
fun mk_struct name s = "structure " ^ name ^ " =\nstruct\n\n" ^ s ^ "end;\n";
berghofe@16649
   795
haftmann@28227
   796
fun add_to_module name s = AList.map_entry (op =) (name : string) (suffix s);
berghofe@16649
   797
berghofe@17144
   798
fun output_code gr module xs =
berghofe@16649
   799
  let
wenzelm@19482
   800
    val code = map_filter (fn s =>
berghofe@17144
   801
      let val c as (_, module', _) = Graph.get_node gr s
berghofe@17144
   802
      in if module = "" orelse module = module' then SOME (s, c) else NONE end)
berghofe@17144
   803
        (rev (Graph.all_preds gr xs));
berghofe@16649
   804
    fun string_of_cycle (a :: b :: cs) =
berghofe@16649
   805
          let val SOME (x, y) = get_first (fn (x, (_, a', _)) =>
berghofe@16649
   806
            if a = a' then Option.map (pair x)
haftmann@21056
   807
              (find_first (equal b o #2 o Graph.get_node gr)
berghofe@16649
   808
                (Graph.imm_succs gr x))
berghofe@16649
   809
            else NONE) code
berghofe@16649
   810
          in x ^ " called by " ^ y ^ "\n" ^ string_of_cycle (b :: cs) end
berghofe@16649
   811
      | string_of_cycle _ = ""
berghofe@16649
   812
  in
berghofe@17144
   813
    if module = "" then
berghofe@16649
   814
      let
wenzelm@19046
   815
        val modules = distinct (op =) (map (#2 o snd) code);
wenzelm@23178
   816
        val mod_gr = fold_rev Graph.add_edge_acyclic
wenzelm@19482
   817
          (maps (fn (s, (_, module, _)) => map (pair module)
berghofe@17144
   818
            (filter_out (equal module) (map (#2 o Graph.get_node gr)
wenzelm@23178
   819
              (Graph.imm_succs gr s)))) code)
wenzelm@23178
   820
          (fold_rev (Graph.new_node o rpair ()) modules Graph.empty);
berghofe@16649
   821
        val modules' =
berghofe@16649
   822
          rev (Graph.all_preds mod_gr (map (#2 o Graph.get_node gr) xs))
berghofe@16649
   823
      in
wenzelm@23178
   824
        List.foldl (fn ((_, (_, module, s)), ms) => add_to_module module s ms)
berghofe@16649
   825
          (map (rpair "") modules') code
berghofe@16649
   826
      end handle Graph.CYCLES (cs :: _) =>
berghofe@16649
   827
        error ("Cyclic dependency of modules:\n" ^ commas cs ^
berghofe@16649
   828
          "\n" ^ string_of_cycle cs)
berghofe@17144
   829
    else [(module, implode (map (#3 o snd) code))]
berghofe@16649
   830
  end;
berghofe@11520
   831
berghofe@26974
   832
fun gen_generate_code prep_term thy modules module xs =
berghofe@11520
   833
  let
wenzelm@21858
   834
    val _ = (module <> "" orelse
wenzelm@20665
   835
        member (op =) (!mode) "library" andalso forall (equal "" o fst) xs)
wenzelm@21858
   836
      orelse error "missing module name";
berghofe@17144
   837
    val graphs = get_modules thy;
berghofe@16649
   838
    val defs = mk_deftab thy;
berghofe@17144
   839
    val gr = new_node ("<Top>", (NONE, module, ""))
wenzelm@23178
   840
      (List.foldl (fn ((gr, (tab1, tab2)), (gr', (tab1', tab2'))) =>
berghofe@17144
   841
        (Graph.merge (fn ((_, module, _), (_, module', _)) =>
berghofe@17144
   842
           module = module') (gr, gr'),
berghofe@17144
   843
         (merge_nametabs (tab1, tab1'), merge_nametabs (tab2, tab2')))) emptygr
wenzelm@17412
   844
           (map (fn s => case Symtab.lookup graphs s of
berghofe@17144
   845
                NONE => error ("Undefined code module: " ^ s)
berghofe@17144
   846
              | SOME gr => gr) modules))
wenzelm@23655
   847
      handle Graph.DUP k => error ("Duplicate code for " ^ k);
berghofe@16649
   848
    fun expand (t as Abs _) = t
berghofe@16649
   849
      | expand t = (case fastype_of t of
berghofe@16649
   850
          Type ("fun", [T, U]) => Abs ("x", T, t $ Bound 0) | _ => t);
berghofe@11520
   851
    val (gr', ps) = foldl_map (fn (gr, (s, t)) => apsnd (pair s)
berghofe@17144
   852
      (invoke_codegen thy defs "<Top>" module false (gr, t)))
berghofe@17549
   853
        (gr, map (apsnd (expand o preprocess_term thy o prep_term thy)) xs);
wenzelm@19482
   854
    val code = map_filter
berghofe@17144
   855
      (fn ("", _) => NONE
berghofe@26974
   856
        | (s', p) => SOME (string_of (Pretty.block
berghofe@26974
   857
          [str ("val " ^ s' ^ " ="), Pretty.brk 1, p, str ";"]))) ps;
berghofe@17144
   858
    val code' = space_implode "\n\n" code ^ "\n\n";
berghofe@17144
   859
    val code'' =
wenzelm@19482
   860
      map_filter (fn (name, s) =>
wenzelm@20665
   861
          if member (op =) (!mode) "library" andalso name = module andalso null code
berghofe@17144
   862
          then NONE
berghofe@17144
   863
          else SOME (name, mk_struct name s))
berghofe@17144
   864
        ((if null code then I
berghofe@17144
   865
          else add_to_module module code')
berghofe@17144
   866
           (output_code (fst gr') (if_library "" module) ["<Top>"]))
berghofe@16649
   867
  in
berghofe@17144
   868
    (code'', del_nodes ["<Top>"] gr')
berghofe@26974
   869
  end;
berghofe@11520
   870
wenzelm@22680
   871
val generate_code_i = gen_generate_code Sign.cert_term;
wenzelm@27251
   872
val generate_code = gen_generate_code OldGoals.read_term;
berghofe@11520
   873
berghofe@12452
   874
berghofe@13753
   875
(**** Reflection ****)
berghofe@13753
   876
berghofe@13753
   877
val strip_tname = implode o tl o explode;
berghofe@13753
   878
berghofe@26974
   879
fun pretty_list xs = Pretty.block (str "[" ::
berghofe@26974
   880
  flat (separate [str ",", Pretty.brk 1] (map single xs)) @
berghofe@26974
   881
  [str "]"]);
berghofe@13753
   882
berghofe@26974
   883
fun mk_type p (TVar ((s, i), _)) = str
berghofe@13753
   884
      (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "T")
berghofe@26974
   885
  | mk_type p (TFree (s, _)) = str (strip_tname s ^ "T")
berghofe@13753
   886
  | mk_type p (Type (s, Ts)) = (if p then parens else I) (Pretty.block
berghofe@26974
   887
      [str "Type", Pretty.brk 1, str ("(\"" ^ s ^ "\","),
berghofe@26974
   888
       Pretty.brk 1, pretty_list (map (mk_type false) Ts), str ")"]);
berghofe@13753
   889
berghofe@26974
   890
fun mk_term_of gr module p (TVar ((s, i), _)) = str
berghofe@13753
   891
      (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "F")
berghofe@26974
   892
  | mk_term_of gr module p (TFree (s, _)) = str (strip_tname s ^ "F")
berghofe@17144
   893
  | mk_term_of gr module p (Type (s, Ts)) = (if p then parens else I)
berghofe@16649
   894
      (Pretty.block (separate (Pretty.brk 1)
berghofe@26974
   895
        (str (mk_qual_id module
berghofe@17144
   896
          (get_type_id' (fn s' => "term_of_" ^ s') s gr)) ::
wenzelm@19482
   897
        maps (fn T =>
wenzelm@19482
   898
          [mk_term_of gr module true T, mk_type true T]) Ts)));
berghofe@13753
   899
berghofe@13753
   900
berghofe@14105
   901
(**** Test data generators ****)
berghofe@14105
   902
berghofe@26974
   903
fun mk_gen gr module p xs a (TVar ((s, i), _)) = str
berghofe@14105
   904
      (strip_tname s ^ (if i = 0 then "" else string_of_int i) ^ "G")
berghofe@26974
   905
  | mk_gen gr module p xs a (TFree (s, _)) = str (strip_tname s ^ "G")
berghofe@25892
   906
  | mk_gen gr module p xs a (Type (tyc as (s, Ts))) = (if p then parens else I)
berghofe@16649
   907
      (Pretty.block (separate (Pretty.brk 1)
berghofe@26974
   908
        (str (mk_qual_id module (get_type_id' (fn s' => "gen_" ^ s') s gr) ^
wenzelm@20665
   909
          (if member (op =) xs s then "'" else "")) ::
berghofe@25892
   910
         (case tyc of
berghofe@25892
   911
            ("fun", [T, U]) =>
berghofe@25892
   912
              [mk_term_of gr module true T, mk_type true T,
berghofe@25892
   913
               mk_gen gr module true xs a U, mk_type true U]
berghofe@25892
   914
          | _ => maps (fn T =>
berghofe@25892
   915
              [mk_gen gr module true xs a T, mk_type true T]) Ts) @
berghofe@26974
   916
         (if member (op =) xs s then [str a] else []))));
berghofe@14105
   917
skalberg@15531
   918
val test_fn : (int -> (string * term) list option) ref = ref (fn _ => NONE);
berghofe@14105
   919
berghofe@24456
   920
fun test_term thy quiet sz i t =
berghofe@14105
   921
  let
wenzelm@21858
   922
    val _ = (null (term_tvars t) andalso null (term_tfrees t)) orelse
wenzelm@21858
   923
      error "Term to be tested contains type variables";
wenzelm@21858
   924
    val _ = null (term_vars t) orelse
wenzelm@21858
   925
      error "Term to be tested contains schematic variables";
berghofe@14105
   926
    val frees = map dest_Free (term_frees t);
berghofe@17549
   927
    val frees' = frees ~~
berghofe@17549
   928
      map (fn i => "arg" ^ string_of_int i) (1 upto length frees);
berghofe@17144
   929
    val (code, gr) = setmp mode ["term_of", "test"]
berghofe@17144
   930
      (generate_code_i thy [] "Generated") [("testf", list_abs_free (frees, t))];
berghofe@26974
   931
    val s = "structure TestTerm =\nstruct\n\n" ^
wenzelm@26931
   932
      cat_lines (map snd code) ^
berghofe@26974
   933
      "\nopen Generated;\n\n" ^ string_of
berghofe@26974
   934
        (Pretty.block [str "val () = Codegen.test_fn :=",
berghofe@26974
   935
          Pretty.brk 1, str ("(fn i =>"), Pretty.brk 1,
berghofe@25892
   936
          mk_let (map (fn ((s, T), s') =>
berghofe@26974
   937
              (mk_tuple [str s', str (s' ^ "_t")],
berghofe@25892
   938
               Pretty.block [mk_gen gr "Generated" false [] "" T, Pretty.brk 1,
berghofe@26974
   939
                 str "i"])) frees')
berghofe@26974
   940
            (Pretty.block [str "if ",
berghofe@26974
   941
              mk_app false (str "testf") (map (str o snd) frees'),
berghofe@26974
   942
              Pretty.brk 1, str "then NONE",
berghofe@26974
   943
              Pretty.brk 1, str "else ",
berghofe@26974
   944
              Pretty.block [str "SOME ", Pretty.block (str "[" ::
berghofe@26974
   945
                flat (separate [str ",", Pretty.brk 1]
berghofe@17549
   946
                  (map (fn ((s, T), s') => [Pretty.block
berghofe@26974
   947
                    [str ("(" ^ quote (Symbol.escape s) ^ ","), Pretty.brk 1,
berghofe@26974
   948
                     str (s' ^ "_t ())")]]) frees')) @
berghofe@26974
   949
                  [str "]"])]]),
berghofe@26974
   950
          str ");"]) ^
berghofe@26974
   951
      "\n\nend;\n";
wenzelm@26455
   952
    val _ = ML_Context.eval_in (SOME (Context.Theory thy)) false Position.none s;
skalberg@15531
   953
    fun iter f k = if k > i then NONE
berghofe@14135
   954
      else (case (f () handle Match =>
berghofe@24456
   955
          (if quiet then ()
berghofe@24456
   956
           else warning "Exception Match raised in generated code"; NONE)) of
skalberg@15531
   957
        NONE => iter f (k+1) | SOME x => SOME x);
skalberg@15531
   958
    fun test k = if k > sz then NONE
berghofe@24456
   959
      else (if quiet then () else priority ("Test data size: " ^ string_of_int k);
berghofe@14105
   960
        case iter (fn () => !test_fn k) 1 of
skalberg@15531
   961
          NONE => test (k+1) | SOME x => SOME x);
berghofe@17638
   962
  in test 0 end;
berghofe@14105
   963
berghofe@24565
   964
fun test_goal quiet ({size, iterations, default_type}, tvinsts) i assms state =
berghofe@14105
   965
  let
berghofe@24456
   966
    val thy = Proof.theory_of state;
berghofe@14105
   967
    fun strip (Const ("all", _) $ Abs (_, _, t)) = strip t
berghofe@14105
   968
      | strip t = t;
berghofe@24565
   969
    val (_, (_, st)) = Proof.get_goal state;
berghofe@24565
   970
    val (gi, frees) = Logic.goal_params (prop_of st) i;
wenzelm@20548
   971
    val gi' = ObjectLogic.atomize_term thy (map_types
berghofe@24655
   972
      (map_type_tfree (fn p as (s, S) =>
berghofe@24655
   973
        let val T = the_default (the_default (TFree p) default_type)
berghofe@24655
   974
          (AList.lookup (op =) tvinsts s)
berghofe@24655
   975
        in if Sign.of_sort thy (T, S) then T
wenzelm@26939
   976
          else error ("Type " ^ Syntax.string_of_typ_global thy T ^
berghofe@24655
   977
            " to be substituted for variable " ^
wenzelm@26939
   978
            Syntax.string_of_typ_global thy (TFree p) ^ "\ndoes not have sort " ^
wenzelm@26939
   979
            Syntax.string_of_sort_global thy S)
berghofe@24655
   980
        end))
berghofe@24456
   981
      (Logic.list_implies (assms, subst_bounds (frees, strip gi))));
berghofe@24565
   982
  in test_term thy quiet size iterations gi' end;
berghofe@24565
   983
berghofe@24565
   984
fun pretty_counterex ctxt NONE = Pretty.str "No counterexamples found."
berghofe@24565
   985
  | pretty_counterex ctxt (SOME cex) =
berghofe@24565
   986
      Pretty.chunks (Pretty.str "Counterexample found:\n" ::
berghofe@24565
   987
        map (fn (s, t) =>
wenzelm@24920
   988
          Pretty.block [Pretty.str (s ^ " ="), Pretty.brk 1, Syntax.pretty_term ctxt t]) cex);
berghofe@24456
   989
wenzelm@25376
   990
val auto_quickcheck = ref false;
wenzelm@24805
   991
val auto_quickcheck_time_limit = ref 5000;
berghofe@24456
   992
berghofe@24456
   993
fun test_goal' int state =
berghofe@24565
   994
  let
berghofe@24565
   995
    val ctxt = Proof.context_of state;
wenzelm@25376
   996
    val assms = map term_of (Assumption.assms_of ctxt);
wenzelm@25376
   997
    val params = get_test_params (Proof.theory_of state);
wenzelm@25376
   998
    fun test () =
wenzelm@25376
   999
      let
wenzelm@25376
  1000
        val res = TimeLimit.timeLimit (Time.fromMilliseconds (!auto_quickcheck_time_limit))
wenzelm@25376
  1001
          (try (test_goal true (params, []) 1 assms)) state;
wenzelm@25376
  1002
      in
wenzelm@25376
  1003
        case res of
wenzelm@25400
  1004
          NONE => state
wenzelm@25400
  1005
        | SOME NONE => state
wenzelm@25376
  1006
        | SOME cex => Proof.goal_message (fn () => Pretty.chunks [Pretty.str "",
wenzelm@26700
  1007
            Pretty.mark Markup.hilite (pretty_counterex ctxt cex)]) state
wenzelm@25400
  1008
      end handle TimeLimit.TimeOut => (warning "Auto quickcheck: timeout."; state);
berghofe@24456
  1009
  in
berghofe@24565
  1010
    if int andalso !auto_quickcheck andalso not (!Toplevel.quiet)
wenzelm@25376
  1011
    then test ()
berghofe@24565
  1012
    else state
wenzelm@24805
  1013
  end;
berghofe@24456
  1014
berghofe@14105
  1015
berghofe@17549
  1016
(**** Evaluator for terms ****)
berghofe@17549
  1017
berghofe@24655
  1018
val eval_result = ref (fn () => Bound 0);
berghofe@17549
  1019
wenzelm@25009
  1020
fun eval_term thy t =
berghofe@26974
  1021
  let val e =
wenzelm@25009
  1022
    let
wenzelm@25009
  1023
      val _ = (null (term_tvars t) andalso null (term_tfrees t)) orelse
wenzelm@25009
  1024
        error "Term to be evaluated contains type variables";
wenzelm@25009
  1025
      val _ = (null (term_vars t) andalso null (term_frees t)) orelse
wenzelm@25009
  1026
        error "Term to be evaluated contains variables";
wenzelm@25009
  1027
      val (code, gr) = setmp mode ["term_of"]
wenzelm@25009
  1028
        (generate_code_i thy [] "Generated")
wenzelm@25009
  1029
        [("result", Abs ("x", TFree ("'a", []), t))];
wenzelm@25009
  1030
      val s = "structure EvalTerm =\nstruct\n\n" ^
wenzelm@26931
  1031
        cat_lines (map snd code) ^
berghofe@26974
  1032
        "\nopen Generated;\n\n" ^ string_of
berghofe@26974
  1033
          (Pretty.block [str "val () = Codegen.eval_result := (fn () =>",
wenzelm@25009
  1034
            Pretty.brk 1,
wenzelm@25009
  1035
            mk_app false (mk_term_of gr "Generated" false (fastype_of t))
berghofe@26974
  1036
              [str "(result ())"],
berghofe@26974
  1037
            str ");"]) ^
wenzelm@25009
  1038
        "\n\nend;\n";
wenzelm@26455
  1039
      val _ = ML_Context.eval_in (SOME (Context.Theory thy)) false Position.none s;
berghofe@26974
  1040
    in !eval_result end;
wenzelm@25009
  1041
  in e () end;
berghofe@17549
  1042
haftmann@20599
  1043
exception Evaluation of term;
haftmann@20599
  1044
haftmann@20599
  1045
fun evaluation_oracle (thy, Evaluation t) =
haftmann@20599
  1046
  Logic.mk_equals (t, eval_term thy t);
haftmann@20599
  1047
haftmann@20599
  1048
fun evaluation_conv ct =
wenzelm@26626
  1049
  let val thy = Thm.theory_of_cterm ct
haftmann@28227
  1050
  in Thm.invoke_oracle_i thy "HOL.evaluation" (thy, Evaluation (Thm.term_of ct)) end;
haftmann@20599
  1051
berghofe@17549
  1052
berghofe@12452
  1053
(**** Interface ****)
berghofe@12452
  1054
berghofe@11520
  1055
fun parse_mixfix rd s =
berghofe@11520
  1056
  (case Scan.finite Symbol.stopper (Scan.repeat
berghofe@11520
  1057
     (   $$ "_" >> K Arg
berghofe@11520
  1058
      || $$ "?" >> K Ignore
berghofe@16769
  1059
      || $$ "\\<module>" >> K Module
berghofe@11520
  1060
      || $$ "/" |-- Scan.repeat ($$ " ") >> (Pretty o Pretty.brk o length)
berghofe@11520
  1061
      || $$ "{" |-- $$ "*" |-- Scan.repeat1
wenzelm@23784
  1062
           (   $$ "'" |-- Scan.one Symbol.is_regular
wenzelm@23784
  1063
            || Scan.unless ($$ "*" -- $$ "}") (Scan.one Symbol.is_regular)) --|
berghofe@12452
  1064
         $$ "*" --| $$ "}" >> (Quote o rd o implode)
berghofe@11520
  1065
      || Scan.repeat1
wenzelm@23784
  1066
           (   $$ "'" |-- Scan.one Symbol.is_regular
berghofe@16769
  1067
            || Scan.unless ($$ "_" || $$ "?" || $$ "\\<module>" || $$ "/" || $$ "{" |-- $$ "*")
wenzelm@23784
  1068
                 (Scan.one Symbol.is_regular)) >> (Pretty o str o implode)))
berghofe@11520
  1069
       (Symbol.explode s) of
berghofe@11520
  1070
     (p, []) => p
berghofe@11520
  1071
   | _ => error ("Malformed annotation: " ^ quote s));
berghofe@11520
  1072
wenzelm@15801
  1073
wenzelm@17057
  1074
structure P = OuterParse and K = OuterKeyword;
berghofe@11520
  1075
wenzelm@27353
  1076
val _ = List.app OuterKeyword.keyword ["attach", "file", "contains"];
wenzelm@24867
  1077
berghofe@17144
  1078
fun strip_whitespace s = implode (fst (take_suffix (equal "\n" orf equal " ")
berghofe@17144
  1079
  (snd (take_prefix (equal "\n" orf equal " ") (explode s))))) ^ "\n";
berghofe@16769
  1080
berghofe@16769
  1081
val parse_attach = Scan.repeat (P.$$$ "attach" |--
berghofe@16769
  1082
  Scan.optional (P.$$$ "(" |-- P.xname --| P.$$$ ")") "" --
berghofe@17144
  1083
    (P.verbatim >> strip_whitespace));
berghofe@16769
  1084
wenzelm@24867
  1085
val _ =
berghofe@11520
  1086
  OuterSyntax.command "types_code"
wenzelm@11546
  1087
  "associate types with target language types" K.thy_decl
berghofe@16769
  1088
    (Scan.repeat1 (P.xname --| P.$$$ "(" -- P.string --| P.$$$ ")" -- parse_attach) >>
haftmann@22921
  1089
     (fn xs => Toplevel.theory (fn thy => fold (assoc_type o
haftmann@22921
  1090
       (fn ((name, mfx), aux) => (name, (parse_mixfix
wenzelm@24707
  1091
         (Syntax.read_typ_global thy) mfx, aux)))) xs thy)));
berghofe@11520
  1092
wenzelm@24867
  1093
val _ =
berghofe@11520
  1094
  OuterSyntax.command "consts_code"
wenzelm@11546
  1095
  "associate constants with target language code" K.thy_decl
berghofe@11520
  1096
    (Scan.repeat1
haftmann@22921
  1097
       (P.term --|
berghofe@16769
  1098
        P.$$$ "(" -- P.string --| P.$$$ ")" -- parse_attach) >>
wenzelm@25376
  1099
     (fn xs => Toplevel.theory (fn thy => fold (assoc_const o
haftmann@22921
  1100
       (fn ((const, mfx), aux) =>
wenzelm@27251
  1101
         (const, (parse_mixfix (OldGoals.read_term thy) mfx, aux)))) xs thy)));
berghofe@11520
  1102
berghofe@17144
  1103
fun parse_code lib =
berghofe@17144
  1104
  Scan.optional (P.$$$ "(" |-- P.enum "," P.xname --| P.$$$ ")") (!mode) --
berghofe@17144
  1105
  (if lib then Scan.optional P.name "" else P.name) --
berghofe@17144
  1106
  Scan.option (P.$$$ "file" |-- P.name) --
berghofe@17144
  1107
  (if lib then Scan.succeed []
berghofe@17144
  1108
   else Scan.optional (P.$$$ "imports" |-- Scan.repeat1 P.name) []) --|
berghofe@17144
  1109
  P.$$$ "contains" --
berghofe@17144
  1110
  (   Scan.repeat1 (P.name --| P.$$$ "=" -- P.term)
berghofe@17144
  1111
   || Scan.repeat1 (P.term >> pair "")) >>
berghofe@17144
  1112
  (fn ((((mode', module), opt_fname), modules), xs) => Toplevel.theory (fn thy =>
berghofe@17144
  1113
     let
wenzelm@19299
  1114
       val mode'' = (if lib then insert (op =) "library" else I) (remove (op =) "library" mode');
berghofe@17144
  1115
       val (code, gr) = setmp mode mode'' (generate_code thy modules module) xs
berghofe@17144
  1116
     in ((case opt_fname of
wenzelm@26455
  1117
         NONE =>
wenzelm@26455
  1118
           ML_Context.eval_in (SOME (Context.Theory thy)) false Position.none
wenzelm@26931
  1119
             (cat_lines (map snd code))
berghofe@17144
  1120
       | SOME fname =>
berghofe@17144
  1121
           if lib then
berghofe@17144
  1122
             app (fn (name, s) => File.write
wenzelm@21858
  1123
                 (Path.append (Path.explode fname) (Path.basic (name ^ ".ML"))) s)
berghofe@17144
  1124
               (("ROOT", implode (map (fn (name, _) =>
berghofe@17144
  1125
                   "use \"" ^ name ^ ".ML\";\n") code)) :: code)
wenzelm@21858
  1126
           else File.write (Path.explode fname) (snd (hd code)));
berghofe@17144
  1127
           if lib then thy
wenzelm@17412
  1128
           else map_modules (Symtab.update (module, gr)) thy)
berghofe@17144
  1129
     end));
berghofe@17144
  1130
haftmann@28227
  1131
val setup = add_codegen "default" default_codegen
haftmann@28227
  1132
  #> add_tycodegen "default" default_tycodegen
haftmann@28227
  1133
  #> Theory.add_oracle ("evaluation", evaluation_oracle)
haftmann@28227
  1134
  #> Value.add_evaluator ("SML", eval_term o ProofContext.theory_of)
haftmann@28227
  1135
  #> Code.add_attribute ("unfold", Scan.succeed (Thm.declaration_attribute
haftmann@28227
  1136
       (fn thm => Context.mapping (add_unfold thm #> Code.add_inline thm) I)));
haftmann@28227
  1137
haftmann@28227
  1138
val _ = Context.>> (Specification.add_theorem_hook test_goal');
haftmann@28227
  1139
wenzelm@24867
  1140
val _ =
berghofe@17144
  1141
  OuterSyntax.command "code_library"
berghofe@17144
  1142
    "generates code for terms (one structure for each theory)" K.thy_decl
berghofe@17144
  1143
    (parse_code true);
berghofe@17144
  1144
wenzelm@24867
  1145
val _ =
berghofe@17144
  1146
  OuterSyntax.command "code_module"
berghofe@17144
  1147
    "generates code for terms (single structure, incremental)" K.thy_decl
berghofe@17144
  1148
    (parse_code false);
berghofe@11520
  1149
berghofe@14105
  1150
val params =
berghofe@14105
  1151
  [("size", P.nat >> (K o set_size)),
berghofe@14105
  1152
   ("iterations", P.nat >> (K o set_iterations)),
berghofe@14105
  1153
   ("default_type", P.typ >> set_default_type)];
berghofe@14105
  1154
wenzelm@24022
  1155
val parse_test_params = P.short_ident :|-- (fn s =>
wenzelm@24022
  1156
  P.$$$ "=" |-- (AList.lookup (op =) params s |> the_default Scan.fail));
berghofe@14105
  1157
berghofe@14105
  1158
fun parse_tyinst xs =
wenzelm@16458
  1159
  (P.type_ident --| P.$$$ "=" -- P.typ >> (fn (v, s) => fn thy =>
wenzelm@24707
  1160
    fn (x, ys) => (x, (v, Syntax.read_typ_global thy s) :: ys))) xs;
berghofe@14105
  1161
wenzelm@24867
  1162
val _ =
berghofe@14105
  1163
  OuterSyntax.command "quickcheck_params" "set parameters for random testing" K.thy_decl
berghofe@14105
  1164
    (P.$$$ "[" |-- P.list1 parse_test_params --| P.$$$ "]" >>
berghofe@14105
  1165
      (fn fs => Toplevel.theory (fn thy =>
berghofe@24456
  1166
         map_test_params (Library.apply (map (fn f => f thy) fs)) thy)));
berghofe@14105
  1167
wenzelm@24867
  1168
val _ =
berghofe@14105
  1169
  OuterSyntax.command "quickcheck" "try to find counterexample for subgoal" K.diag
berghofe@14105
  1170
  (Scan.option (P.$$$ "[" |-- P.list1
wenzelm@16458
  1171
    (   parse_test_params >> (fn f => fn thy => apfst (f thy))
berghofe@14105
  1172
     || parse_tyinst) --| P.$$$ "]") -- Scan.optional P.nat 1 >>
berghofe@24565
  1173
    (fn (ps, g) => Toplevel.keep (fn st => Toplevel.proof_of st |>
berghofe@24565
  1174
      test_goal false (Library.apply (the_default []
berghofe@24565
  1175
          (Option.map (map (fn f => f (Toplevel.theory_of st))) ps))
berghofe@24565
  1176
        (get_test_params (Toplevel.theory_of st), [])) g [] |>
berghofe@24565
  1177
      pretty_counterex (Toplevel.context_of st) |> Pretty.writeln)));
berghofe@14105
  1178
berghofe@11520
  1179
end;
wenzelm@24805
  1180
wenzelm@24805
  1181
val auto_quickcheck = Codegen.auto_quickcheck;
wenzelm@24805
  1182
val auto_quickcheck_time_limit = Codegen.auto_quickcheck_time_limit;
wenzelm@24805
  1183