src/Tools/Code/code_thingol.ML
author haftmann
Tue Nov 03 17:06:08 2009 +0100 (2009-11-03)
changeset 33420 17b7095ad463
parent 33187 616be6d7997e
child 33943 f31d645b4e00
child 33955 fff6f11b1f09
child 33990 febc68c02b63
permissions -rw-r--r--
pretty name for ==>
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(*  Title:      Tools/code/code_thingol.ML
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    Author:     Florian Haftmann, TU Muenchen
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Intermediate language ("Thin-gol") representing executable code.
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Representation and translation.
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*)
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infix 8 `%%;
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infix 4 `$;
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infix 4 `$$;
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infixr 3 `|=>;
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infixr 3 `|==>;
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signature BASIC_CODE_THINGOL =
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sig
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  type vname = string;
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  datatype dict =
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      DictConst of string * dict list list
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    | DictVar of string list * (vname * (int * int));
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  datatype itype =
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      `%% of string * itype list
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    | ITyVar of vname;
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  type const = string * ((itype list * dict list list) * itype list (*types of arguments*))
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  datatype iterm =
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      IConst of const
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    | IVar of vname option
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    | `$ of iterm * iterm
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    | `|=> of (vname option * itype) * iterm
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    | ICase of ((iterm * itype) * (iterm * iterm) list) * iterm;
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        (*((term, type), [(selector pattern, body term )]), primitive term)*)
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  val `$$ : iterm * iterm list -> iterm;
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  val `|==> : (vname option * itype) list * iterm -> iterm;
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  type typscheme = (vname * sort) list * itype;
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end;
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signature CODE_THINGOL =
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sig
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  include BASIC_CODE_THINGOL
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  val unfoldl: ('a -> ('a * 'b) option) -> 'a -> 'a * 'b list
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  val unfoldr: ('a -> ('b * 'a) option) -> 'a -> 'b list * 'a
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  val unfold_fun: itype -> itype list * itype
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  val unfold_app: iterm -> iterm * iterm list
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  val unfold_abs: iterm -> (vname option * itype) list * iterm
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  val split_let: iterm -> (((iterm * itype) * iterm) * iterm) option
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  val unfold_let: iterm -> ((iterm * itype) * iterm) list * iterm
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  val split_pat_abs: iterm -> ((iterm * itype) * iterm) option
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  val unfold_pat_abs: iterm -> (iterm * itype) list * iterm
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  val unfold_const_app: iterm -> (const * iterm list) option
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  val is_IVar: iterm -> bool
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  val eta_expand: int -> const * iterm list -> iterm
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  val contains_dictvar: iterm -> bool
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  val locally_monomorphic: iterm -> bool
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  val add_constnames: iterm -> string list -> string list
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  val add_tyconames: iterm -> string list -> string list
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  val fold_varnames: (string -> 'a -> 'a) -> iterm -> 'a -> 'a
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  type naming
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  val empty_naming: naming
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  val lookup_class: naming -> class -> string option
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  val lookup_classrel: naming -> class * class -> string option
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  val lookup_tyco: naming -> string -> string option
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  val lookup_instance: naming -> class * string -> string option
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  val lookup_const: naming -> string -> string option
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  val ensure_declared_const: theory -> string -> naming -> string * naming
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  datatype stmt =
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      NoStmt
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    | Fun of string * (typscheme * ((iterm list * iterm) * (thm * bool)) list)
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    | Datatype of string * ((vname * sort) list * (string * itype list) list)
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    | Datatypecons of string * string
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    | Class of class * (vname * ((class * string) list * (string * itype) list))
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    | Classrel of class * class
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    | Classparam of string * class
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    | Classinst of (class * (string * (vname * sort) list))
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          * ((class * (string * (string * dict list list))) list
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        * ((string * const) * (thm * bool)) list)
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  type program = stmt Graph.T
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  val empty_funs: program -> string list
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  val map_terms_bottom_up: (iterm -> iterm) -> iterm -> iterm
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  val map_terms_stmt: (iterm -> iterm) -> stmt -> stmt
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  val is_cons: program -> string -> bool
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  val contr_classparam_typs: program -> string -> itype option list
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  val labelled_name: theory -> program -> string -> string
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  val group_stmts: theory -> program
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    -> ((string * stmt) list * (string * stmt) list
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      * ((string * stmt) list * (string * stmt) list)) list
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  val expand_eta: theory -> int -> thm -> thm
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  val canonize_thms: theory -> thm list -> thm list
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  val read_const_exprs: theory -> string list -> string list * string list
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  val consts_program: theory -> string list -> string list * (naming * program)
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  val cached_program: theory -> naming * program
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  val eval_conv: theory
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    -> (naming -> program -> ((string * sort) list * typscheme) * iterm -> string list -> cterm -> thm)
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    -> cterm -> thm
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  val eval: theory -> ((term -> term) -> 'a -> 'a)
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    -> (naming -> program -> ((string * sort) list * typscheme) * iterm -> string list -> 'a)
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    -> term -> 'a
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end;
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structure Code_Thingol: CODE_THINGOL =
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struct
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(** auxiliary **)
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fun unfoldl dest x =
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  case dest x
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   of NONE => (x, [])
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    | SOME (x1, x2) =>
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        let val (x', xs') = unfoldl dest x1 in (x', xs' @ [x2]) end;
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fun unfoldr dest x =
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  case dest x
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   of NONE => ([], x)
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    | SOME (x1, x2) =>
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        let val (xs', x') = unfoldr dest x2 in (x1::xs', x') end;
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(** language core - types, terms **)
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type vname = string;
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datatype dict =
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    DictConst of string * dict list list
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  | DictVar of string list * (vname * (int * int));
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datatype itype =
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    `%% of string * itype list
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  | ITyVar of vname;
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type const = string * ((itype list * dict list list) * itype list (*types of arguments*))
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datatype iterm =
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    IConst of const
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  | IVar of vname option
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  | `$ of iterm * iterm
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  | `|=> of (vname option * itype) * iterm
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  | ICase of ((iterm * itype) * (iterm * iterm) list) * iterm;
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    (*see also signature*)
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fun is_IVar (IVar _) = true
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  | is_IVar _ = false;
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val op `$$ = Library.foldl (op `$);
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val op `|==> = Library.foldr (op `|=>);
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val unfold_app = unfoldl
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  (fn op `$ t => SOME t
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    | _ => NONE);
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val unfold_abs = unfoldr
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  (fn op `|=> t => SOME t
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    | _ => NONE);
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val split_let = 
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  (fn ICase (((td, ty), [(p, t)]), _) => SOME (((p, ty), td), t)
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    | _ => NONE);
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val unfold_let = unfoldr split_let;
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fun unfold_const_app t =
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 case unfold_app t
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  of (IConst c, ts) => SOME (c, ts)
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   | _ => NONE;
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fun fold_constexprs f =
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  let
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    fun fold' (IConst c) = f c
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      | fold' (IVar _) = I
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      | fold' (t1 `$ t2) = fold' t1 #> fold' t2
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      | fold' (_ `|=> t) = fold' t
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      | fold' (ICase (((t, _), ds), _)) = fold' t
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          #> fold (fn (pat, body) => fold' pat #> fold' body) ds
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  in fold' end;
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val add_constnames = fold_constexprs (fn (c, _) => insert (op =) c);
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fun add_tycos (tyco `%% tys) = insert (op =) tyco #> fold add_tycos tys
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  | add_tycos (ITyVar _) = I;
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val add_tyconames = fold_constexprs (fn (_, ((tys, _), _)) => fold add_tycos tys);
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fun fold_varnames f =
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  let
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    fun fold_aux add f =
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      let
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        fun fold_term _ (IConst _) = I
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          | fold_term vs (IVar (SOME v)) = if member (op =) vs v then I else f v
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          | fold_term _ (IVar NONE) = I
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          | fold_term vs (t1 `$ t2) = fold_term vs t1 #> fold_term vs t2
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          | fold_term vs ((SOME v, _) `|=> t) = fold_term (insert (op =) v vs) t
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          | fold_term vs ((NONE, _) `|=> t) = fold_term vs t
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          | fold_term vs (ICase (((t, _), ds), _)) = fold_term vs t #> fold (fold_case vs) ds
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        and fold_case vs (p, t) = fold_term (add p vs) t;
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      in fold_term [] end;
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    fun add t = fold_aux add (insert (op =)) t;
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  in fold_aux add f end;
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fun exists_var t v = fold_varnames (fn w => fn b => v = w orelse b) t false;
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fun split_pat_abs ((NONE, ty) `|=> t) = SOME ((IVar NONE, ty), t)
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  | split_pat_abs ((SOME v, ty) `|=> t) = SOME (case t
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     of ICase (((IVar (SOME w), _), [(p, t')]), _) =>
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          if v = w andalso (exists_var p v orelse not (exists_var t' v))
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          then ((p, ty), t')
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          else ((IVar (SOME v), ty), t)
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      | _ => ((IVar (SOME v), ty), t))
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  | split_pat_abs _ = NONE;
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val unfold_pat_abs = unfoldr split_pat_abs;
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fun unfold_abs_eta [] t = ([], t)
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  | unfold_abs_eta (_ :: tys) (v_ty `|=> t) =
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      let
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        val (vs_tys, t') = unfold_abs_eta tys t;
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      in (v_ty :: vs_tys, t') end
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  | unfold_abs_eta tys t =
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      let
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        val ctxt = fold_varnames Name.declare t Name.context;
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        val vs_tys = (map o apfst) SOME (Name.names ctxt "a" tys);
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      in (vs_tys, t `$$ map (IVar o fst) vs_tys) end;
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fun eta_expand k (c as (_, (_, tys)), ts) =
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  let
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    val j = length ts;
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    val l = k - j;
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    val ctxt = (fold o fold_varnames) Name.declare ts Name.context;
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    val vs_tys = (map o apfst) SOME
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      (Name.names ctxt "a" ((curry Library.take l o curry Library.drop j) tys));
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  in vs_tys `|==> IConst c `$$ ts @ map (IVar o fst) vs_tys end;
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fun contains_dictvar t =
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  let
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    fun cont_dict (DictConst (_, dss)) = (exists o exists) cont_dict dss
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      | cont_dict (DictVar _) = true;
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    fun cont_term (IConst (_, ((_, dss), _))) = (exists o exists) cont_dict dss
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      | cont_term (IVar _) = false
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      | cont_term (t1 `$ t2) = cont_term t1 orelse cont_term t2
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      | cont_term (_ `|=> t) = cont_term t
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      | cont_term (ICase (_, t)) = cont_term t;
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  in cont_term t end;
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fun locally_monomorphic (IConst _) = false
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  | locally_monomorphic (IVar _) = true
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  | locally_monomorphic (t `$ _) = locally_monomorphic t
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  | locally_monomorphic (_ `|=> t) = locally_monomorphic t
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  | locally_monomorphic (ICase ((_, ds), _)) = exists (locally_monomorphic o snd) ds;
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(** namings **)
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(* policies *)
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local
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  fun thyname_of_class thy = #theory_name o Name_Space.the_entry (Sign.class_space thy);
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  fun thyname_of_instance thy inst = case AxClass.thynames_of_arity thy inst
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   of [] => error ("No such instance: " ^ quote (snd inst ^ " :: " ^ fst inst))
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    | thyname :: _ => thyname;
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  fun thyname_of_const thy c = case AxClass.class_of_param thy c
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   of SOME class => thyname_of_class thy class
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    | NONE => (case Code.get_datatype_of_constr thy c
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       of SOME dtco => Codegen.thyname_of_type thy dtco
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        | NONE => Codegen.thyname_of_const thy c);
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  fun purify_base "==>" = "follows"
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    | purify_base "op &" = "and"
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    | purify_base "op |" = "or"
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    | purify_base "op -->" = "implies"
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    | purify_base "op :" = "member"
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    | purify_base "op =" = "eq"
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    | purify_base "*" = "product"
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    | purify_base "+" = "sum"
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    | purify_base s = Name.desymbolize false s;
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  fun namify thy get_basename get_thyname name =
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    let
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      val prefix = get_thyname thy name;
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      val base = (purify_base o get_basename) name;
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    in Long_Name.append prefix base end;
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in
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fun namify_class thy = namify thy Long_Name.base_name thyname_of_class;
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fun namify_classrel thy = namify thy (fn (class1, class2) => 
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    Long_Name.base_name class2 ^ "_" ^ Long_Name.base_name class1)
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  (fn thy => thyname_of_class thy o fst);
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  (*order fits nicely with composed projections*)
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fun namify_tyco thy "fun" = "Pure.fun"
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  | namify_tyco thy tyco = namify thy Long_Name.base_name Codegen.thyname_of_type tyco;
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fun namify_instance thy = namify thy (fn (class, tyco) => 
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  Long_Name.base_name class ^ "_" ^ Long_Name.base_name tyco) thyname_of_instance;
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fun namify_const thy = namify thy Long_Name.base_name thyname_of_const;
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end; (* local *)
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(* data *)
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datatype naming = Naming of {
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  class: class Symtab.table * Name.context,
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  classrel: string Symreltab.table * Name.context,
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  tyco: string Symtab.table * Name.context,
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  instance: string Symreltab.table * Name.context,
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  const: string Symtab.table * Name.context
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}
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fun dest_Naming (Naming naming) = naming;
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val empty_naming = Naming {
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  class = (Symtab.empty, Name.context),
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  classrel = (Symreltab.empty, Name.context),
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  tyco = (Symtab.empty, Name.context),
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  instance = (Symreltab.empty, Name.context),
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  const = (Symtab.empty, Name.context)
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};
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local
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  fun mk_naming (class, classrel, tyco, instance, const) =
haftmann@28663
   316
    Naming { class = class, classrel = classrel,
haftmann@28663
   317
      tyco = tyco, instance = instance, const = const };
haftmann@28663
   318
  fun map_naming f (Naming { class, classrel, tyco, instance, const }) =
haftmann@28663
   319
    mk_naming (f (class, classrel, tyco, instance, const));
haftmann@28663
   320
in
haftmann@28663
   321
  fun map_class f = map_naming
haftmann@28663
   322
    (fn (class, classrel, tyco, inst, const) =>
haftmann@28663
   323
      (f class, classrel, tyco, inst, const));
haftmann@28663
   324
  fun map_classrel f = map_naming
haftmann@28663
   325
    (fn (class, classrel, tyco, inst, const) =>
haftmann@28663
   326
      (class, f classrel, tyco, inst, const));
haftmann@28663
   327
  fun map_tyco f = map_naming
haftmann@28663
   328
    (fn (class, classrel, tyco, inst, const) =>
haftmann@28663
   329
      (class, classrel, f tyco, inst, const));
haftmann@28663
   330
  fun map_instance f = map_naming
haftmann@28663
   331
    (fn (class, classrel, tyco, inst, const) =>
haftmann@28663
   332
      (class, classrel, tyco, f inst, const));
haftmann@28663
   333
  fun map_const f = map_naming
haftmann@28663
   334
    (fn (class, classrel, tyco, inst, const) =>
haftmann@28663
   335
      (class, classrel, tyco, inst, f const));
haftmann@28663
   336
end; (*local*)
haftmann@28663
   337
haftmann@28663
   338
fun add_variant update (thing, name) (tab, used) =
haftmann@28663
   339
  let
haftmann@28663
   340
    val (name', used') = yield_singleton Name.variants name used;
haftmann@28663
   341
    val tab' = update (thing, name') tab;
haftmann@28663
   342
  in (tab', used') end;
haftmann@28663
   343
haftmann@28663
   344
fun declare thy mapp lookup update namify thing =
haftmann@28663
   345
  mapp (add_variant update (thing, namify thy thing))
haftmann@28663
   346
  #> `(fn naming => the (lookup naming thing));
haftmann@28663
   347
haftmann@28688
   348
haftmann@28688
   349
(* lookup and declare *)
haftmann@28688
   350
haftmann@28688
   351
local
haftmann@28688
   352
haftmann@28688
   353
val suffix_class = "class";
haftmann@28688
   354
val suffix_classrel = "classrel"
haftmann@28688
   355
val suffix_tyco = "tyco";
haftmann@28688
   356
val suffix_instance = "inst";
haftmann@28688
   357
val suffix_const = "const";
haftmann@28688
   358
haftmann@28688
   359
fun add_suffix nsp NONE = NONE
wenzelm@30364
   360
  | add_suffix nsp (SOME name) = SOME (Long_Name.append name nsp);
haftmann@28688
   361
haftmann@28688
   362
in
haftmann@28688
   363
haftmann@28663
   364
val lookup_class = add_suffix suffix_class
haftmann@28663
   365
  oo Symtab.lookup o fst o #class o dest_Naming;
haftmann@28663
   366
val lookup_classrel = add_suffix suffix_classrel
haftmann@30648
   367
  oo Symreltab.lookup o fst o #classrel o dest_Naming;
haftmann@28663
   368
val lookup_tyco = add_suffix suffix_tyco
haftmann@28663
   369
  oo Symtab.lookup o fst o #tyco o dest_Naming;
haftmann@28663
   370
val lookup_instance = add_suffix suffix_instance
haftmann@30648
   371
  oo Symreltab.lookup o fst o #instance o dest_Naming;
haftmann@28663
   372
val lookup_const = add_suffix suffix_const
haftmann@28663
   373
  oo Symtab.lookup o fst o #const o dest_Naming;
haftmann@28663
   374
haftmann@28663
   375
fun declare_class thy = declare thy map_class
haftmann@28663
   376
  lookup_class Symtab.update_new namify_class;
haftmann@28663
   377
fun declare_classrel thy = declare thy map_classrel
haftmann@30648
   378
  lookup_classrel Symreltab.update_new namify_classrel;
haftmann@28663
   379
fun declare_tyco thy = declare thy map_tyco
haftmann@28663
   380
  lookup_tyco Symtab.update_new namify_tyco;
haftmann@28663
   381
fun declare_instance thy = declare thy map_instance
haftmann@30648
   382
  lookup_instance Symreltab.update_new namify_instance;
haftmann@28663
   383
fun declare_const thy = declare thy map_const
haftmann@28663
   384
  lookup_const Symtab.update_new namify_const;
haftmann@28663
   385
haftmann@31054
   386
fun ensure_declared_const thy const naming =
haftmann@31054
   387
  case lookup_const naming const
haftmann@31054
   388
   of SOME const' => (const', naming)
haftmann@31054
   389
    | NONE => declare_const thy const naming;
haftmann@31054
   390
haftmann@28688
   391
val unfold_fun = unfoldr
haftmann@28688
   392
  (fn "Pure.fun.tyco" `%% [ty1, ty2] => SOME (ty1, ty2)
haftmann@28688
   393
    | _ => NONE); (*depends on suffix_tyco and namify_tyco!*)
haftmann@28688
   394
haftmann@28688
   395
end; (* local *)
haftmann@28688
   396
haftmann@24219
   397
haftmann@32353
   398
(** technical transformations of code equations **)
haftmann@32353
   399
haftmann@32353
   400
fun expand_eta thy k thm =
haftmann@32353
   401
  let
haftmann@32353
   402
    val (lhs, rhs) = (Logic.dest_equals o Thm.plain_prop_of) thm;
haftmann@33187
   403
    val (_, args) = strip_comb lhs;
haftmann@32353
   404
    val l = if k = ~1
haftmann@32353
   405
      then (length o fst o strip_abs) rhs
haftmann@32353
   406
      else Int.max (0, k - length args);
haftmann@32353
   407
    val (raw_vars, _) = Term.strip_abs_eta l rhs;
haftmann@32353
   408
    val vars = burrow_fst (Name.variant_list (map (fst o fst) (Term.add_vars lhs [])))
haftmann@32353
   409
      raw_vars;
haftmann@32353
   410
    fun expand (v, ty) thm = Drule.fun_cong_rule thm
haftmann@32353
   411
      (Thm.cterm_of thy (Var ((v, 0), ty)));
haftmann@32353
   412
  in
haftmann@32353
   413
    thm
haftmann@32353
   414
    |> fold expand vars
haftmann@32353
   415
    |> Conv.fconv_rule Drule.beta_eta_conversion
haftmann@32353
   416
  end;
haftmann@32353
   417
haftmann@32353
   418
fun same_arity thy thms =
haftmann@32353
   419
  let
haftmann@32353
   420
    val num_args_of = length o snd o strip_comb o fst o Logic.dest_equals;
wenzelm@33029
   421
    val k = fold (Integer.max o num_args_of o Thm.prop_of) thms 0;
haftmann@32353
   422
  in map (expand_eta thy k) thms end;
haftmann@32353
   423
haftmann@32353
   424
fun mk_desymbolization pre post mk vs =
haftmann@32353
   425
  let
haftmann@32353
   426
    val names = map (pre o fst o fst) vs
haftmann@32353
   427
      |> map (Name.desymbolize false)
haftmann@32353
   428
      |> Name.variant_list []
haftmann@32353
   429
      |> map post;
haftmann@32353
   430
  in map_filter (fn (((v, i), x), v') =>
haftmann@32353
   431
    if v = v' andalso i = 0 then NONE
haftmann@32353
   432
    else SOME (((v, i), x), mk ((v', 0), x))) (vs ~~ names)
haftmann@32353
   433
  end;
haftmann@32353
   434
haftmann@32353
   435
fun desymbolize_tvars thy thms =
haftmann@32353
   436
  let
haftmann@32353
   437
    val tvs = fold (Term.add_tvars o Thm.prop_of) thms [];
haftmann@32353
   438
    val tvar_subst = mk_desymbolization (unprefix "'") (prefix "'") TVar tvs;
haftmann@32353
   439
  in map (Thm.certify_instantiate (tvar_subst, [])) thms end;
haftmann@32353
   440
haftmann@32353
   441
fun desymbolize_vars thy thm =
haftmann@32353
   442
  let
haftmann@32353
   443
    val vs = Term.add_vars (Thm.prop_of thm) [];
haftmann@32353
   444
    val var_subst = mk_desymbolization I I Var vs;
haftmann@32353
   445
  in Thm.certify_instantiate ([], var_subst) thm end;
haftmann@32353
   446
haftmann@32928
   447
fun canonize_thms thy = map (Thm.transfer thy)
haftmann@32929
   448
  #> Code.standard_typscheme thy #> desymbolize_tvars thy
haftmann@32928
   449
  #> same_arity thy #> map (desymbolize_vars thy);
haftmann@32353
   450
haftmann@32353
   451
haftmann@27103
   452
(** statements, abstract programs **)
haftmann@24219
   453
haftmann@24219
   454
type typscheme = (vname * sort) list * itype;
haftmann@24918
   455
datatype stmt =
haftmann@27024
   456
    NoStmt
haftmann@28663
   457
  | Fun of string * (typscheme * ((iterm list * iterm) * (thm * bool)) list)
haftmann@28663
   458
  | Datatype of string * ((vname * sort) list * (string * itype list) list)
haftmann@28663
   459
  | Datatypecons of string * string
haftmann@28663
   460
  | Class of class * (vname * ((class * string) list * (string * itype) list))
haftmann@24219
   461
  | Classrel of class * class
haftmann@28663
   462
  | Classparam of string * class
haftmann@24219
   463
  | Classinst of (class * (string * (vname * sort) list))
haftmann@24219
   464
        * ((class * (string * (string * dict list list))) list
haftmann@28350
   465
      * ((string * const) * (thm * bool)) list);
haftmann@24219
   466
haftmann@27103
   467
type program = stmt Graph.T;
haftmann@24219
   468
haftmann@27103
   469
fun empty_funs program =
haftmann@28663
   470
  Graph.fold (fn (name, (Fun (c, (_, [])), _)) => cons c
haftmann@27103
   471
               | _ => I) program [];
haftmann@24219
   472
haftmann@27711
   473
fun map_terms_bottom_up f (t as IConst _) = f t
haftmann@27711
   474
  | map_terms_bottom_up f (t as IVar _) = f t
haftmann@27711
   475
  | map_terms_bottom_up f (t1 `$ t2) = f
haftmann@27711
   476
      (map_terms_bottom_up f t1 `$ map_terms_bottom_up f t2)
haftmann@31724
   477
  | map_terms_bottom_up f ((v, ty) `|=> t) = f
haftmann@31724
   478
      ((v, ty) `|=> map_terms_bottom_up f t)
haftmann@27711
   479
  | map_terms_bottom_up f (ICase (((t, ty), ps), t0)) = f
haftmann@27711
   480
      (ICase (((map_terms_bottom_up f t, ty), (map o pairself)
haftmann@27711
   481
        (map_terms_bottom_up f) ps), map_terms_bottom_up f t0));
haftmann@27711
   482
haftmann@27711
   483
fun map_terms_stmt f NoStmt = NoStmt
haftmann@28663
   484
  | map_terms_stmt f (Fun (c, (tysm, eqs))) = Fun (c, (tysm, (map o apfst)
haftmann@28663
   485
      (fn (ts, t) => (map f ts, f t)) eqs))
haftmann@27711
   486
  | map_terms_stmt f (stmt as Datatype _) = stmt
haftmann@27711
   487
  | map_terms_stmt f (stmt as Datatypecons _) = stmt
haftmann@27711
   488
  | map_terms_stmt f (stmt as Class _) = stmt
haftmann@27711
   489
  | map_terms_stmt f (stmt as Classrel _) = stmt
haftmann@27711
   490
  | map_terms_stmt f (stmt as Classparam _) = stmt
haftmann@27711
   491
  | map_terms_stmt f (Classinst (arity, (superarities, classparms))) =
haftmann@27711
   492
      Classinst (arity, (superarities, (map o apfst o apsnd) (fn const =>
haftmann@27711
   493
        case f (IConst const) of IConst const' => const') classparms));
haftmann@27711
   494
haftmann@27103
   495
fun is_cons program name = case Graph.get_node program name
haftmann@24219
   496
 of Datatypecons _ => true
haftmann@24219
   497
  | _ => false;
haftmann@24219
   498
haftmann@27103
   499
fun contr_classparam_typs program name = case Graph.get_node program name
haftmann@28663
   500
 of Classparam (_, class) => let
haftmann@28663
   501
        val Class (_, (_, (_, params))) = Graph.get_node program class;
haftmann@25621
   502
        val SOME ty = AList.lookup (op =) params name;
haftmann@25621
   503
        val (tys, res_ty) = unfold_fun ty;
haftmann@25621
   504
        fun no_tyvar (_ `%% tys) = forall no_tyvar tys
haftmann@25621
   505
          | no_tyvar (ITyVar _) = false;
haftmann@25621
   506
      in if no_tyvar res_ty
haftmann@25621
   507
        then map (fn ty => if no_tyvar ty then NONE else SOME ty) tys
haftmann@25621
   508
        else []
haftmann@25621
   509
      end
haftmann@25621
   510
  | _ => [];
haftmann@25621
   511
haftmann@32895
   512
fun labelled_name thy program name = case Graph.get_node program name
haftmann@32895
   513
 of Fun (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   514
  | Datatype (tyco, _) => "type " ^ quote (Sign.extern_type thy tyco)
haftmann@32895
   515
  | Datatypecons (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   516
  | Class (class, _) => "class " ^ quote (Sign.extern_class thy class)
haftmann@32895
   517
  | Classrel (sub, super) => let
haftmann@32895
   518
        val Class (sub, _) = Graph.get_node program sub
haftmann@32895
   519
        val Class (super, _) = Graph.get_node program super
haftmann@32895
   520
      in quote (Sign.extern_class thy sub ^ " < " ^ Sign.extern_class thy super) end
haftmann@32895
   521
  | Classparam (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   522
  | Classinst ((class, (tyco, _)), _) => let
haftmann@32895
   523
        val Class (class, _) = Graph.get_node program class
haftmann@32895
   524
        val Datatype (tyco, _) = Graph.get_node program tyco
haftmann@32895
   525
      in quote (Sign.extern_type thy tyco ^ " :: " ^ Sign.extern_class thy class) end
haftmann@32895
   526
haftmann@32895
   527
fun group_stmts thy program =
haftmann@32895
   528
  let
haftmann@32895
   529
    fun is_fun (_, Fun _) = true | is_fun _ = false;
haftmann@32895
   530
    fun is_datatypecons (_, Datatypecons _) = true | is_datatypecons _ = false;
haftmann@32895
   531
    fun is_datatype (_, Datatype _) = true | is_datatype _ = false;
haftmann@32895
   532
    fun is_class (_, Class _) = true | is_class _ = false;
haftmann@32895
   533
    fun is_classrel (_, Classrel _) = true | is_classrel _ = false;
haftmann@32895
   534
    fun is_classparam (_, Classparam _) = true | is_classparam _ = false;
haftmann@32895
   535
    fun is_classinst (_, Classinst _) = true | is_classinst _ = false;
haftmann@32895
   536
    fun group stmts =
haftmann@32895
   537
      if forall (is_datatypecons orf is_datatype) stmts
haftmann@32895
   538
      then (filter is_datatype stmts, [], ([], []))
haftmann@32895
   539
      else if forall (is_class orf is_classrel orf is_classparam) stmts
haftmann@32895
   540
      then ([], filter is_class stmts, ([], []))
haftmann@32895
   541
      else if forall (is_fun orf is_classinst) stmts
haftmann@32895
   542
      then ([], [], List.partition is_fun stmts)
haftmann@32895
   543
      else error ("Illegal mutual dependencies: " ^
haftmann@32895
   544
        (commas o map (labelled_name thy program o fst)) stmts)
haftmann@32895
   545
  in
haftmann@32895
   546
    rev (Graph.strong_conn program)
haftmann@32895
   547
    |> map (AList.make (Graph.get_node program))
haftmann@32895
   548
    |> map group
haftmann@32895
   549
  end;
haftmann@32895
   550
haftmann@24219
   551
haftmann@27103
   552
(** translation kernel **)
haftmann@24219
   553
haftmann@28724
   554
(* generic mechanisms *)
haftmann@28724
   555
haftmann@28663
   556
fun ensure_stmt lookup declare generate thing (dep, (naming, program)) =
haftmann@24219
   557
  let
haftmann@28706
   558
    fun add_dep name = case dep of NONE => I
haftmann@28706
   559
      | SOME dep => Graph.add_edge (dep, name);
haftmann@28706
   560
    val (name, naming') = case lookup naming thing
haftmann@28706
   561
     of SOME name => (name, naming)
haftmann@28706
   562
      | NONE => declare thing naming;
haftmann@28706
   563
  in case try (Graph.get_node program) name
haftmann@28706
   564
   of SOME stmt => program
haftmann@28663
   565
        |> add_dep name
haftmann@28706
   566
        |> pair naming'
haftmann@28663
   567
        |> pair dep
haftmann@28663
   568
        |> pair name
haftmann@28706
   569
    | NONE => program
haftmann@28706
   570
        |> Graph.default_node (name, NoStmt)
haftmann@28706
   571
        |> add_dep name
haftmann@28706
   572
        |> pair naming'
haftmann@28706
   573
        |> curry generate (SOME name)
haftmann@28706
   574
        ||> snd
haftmann@28706
   575
        |-> (fn stmt => (apsnd o Graph.map_node name) (K stmt))
haftmann@28706
   576
        |> pair dep
haftmann@28706
   577
        |> pair name
haftmann@24219
   578
  end;
haftmann@24219
   579
haftmann@26972
   580
fun not_wellsorted thy thm ty sort e =
haftmann@26972
   581
  let
haftmann@26972
   582
    val err_class = Sorts.class_error (Syntax.pp_global thy) e;
haftmann@26972
   583
    val err_thm = case thm
wenzelm@32091
   584
     of SOME thm => "\n(in code equation " ^ Display.string_of_thm_global thy thm ^ ")" | NONE => "";
haftmann@26972
   585
    val err_typ = "Type " ^ Syntax.string_of_typ_global thy ty ^ " not of sort "
haftmann@26972
   586
      ^ Syntax.string_of_sort_global thy sort;
haftmann@26972
   587
  in error ("Wellsortedness error" ^ err_thm ^ ":\n" ^ err_typ ^ "\n" ^ err_class) end;
haftmann@26972
   588
haftmann@28724
   589
haftmann@28724
   590
(* translation *)
haftmann@28724
   591
haftmann@32873
   592
fun ensure_tyco thy algbr eqngr tyco =
haftmann@30932
   593
  let
haftmann@30932
   594
    val stmt_datatype =
haftmann@30932
   595
      let
haftmann@30932
   596
        val (vs, cos) = Code.get_datatype thy tyco;
haftmann@30932
   597
      in
haftmann@32873
   598
        fold_map (translate_tyvar_sort thy algbr eqngr) vs
haftmann@30932
   599
        ##>> fold_map (fn (c, tys) =>
haftmann@32873
   600
          ensure_const thy algbr eqngr c
haftmann@32873
   601
          ##>> fold_map (translate_typ thy algbr eqngr) tys) cos
haftmann@30932
   602
        #>> (fn info => Datatype (tyco, info))
haftmann@30932
   603
      end;
haftmann@30932
   604
  in ensure_stmt lookup_tyco (declare_tyco thy) stmt_datatype tyco end
haftmann@32873
   605
and ensure_const thy algbr eqngr c =
haftmann@30932
   606
  let
haftmann@30932
   607
    fun stmt_datatypecons tyco =
haftmann@32873
   608
      ensure_tyco thy algbr eqngr tyco
haftmann@30932
   609
      #>> (fn tyco => Datatypecons (c, tyco));
haftmann@30932
   610
    fun stmt_classparam class =
haftmann@32873
   611
      ensure_class thy algbr eqngr class
haftmann@30932
   612
      #>> (fn class => Classparam (c, class));
haftmann@32872
   613
    fun stmt_fun raw_eqns =
haftmann@32872
   614
      let
haftmann@32928
   615
        val eqns = burrow_fst (canonize_thms thy) raw_eqns;
haftmann@32873
   616
        val (vs, ty) = Code.typscheme_eqns thy c (map fst eqns);
haftmann@32872
   617
      in
haftmann@32873
   618
        fold_map (translate_tyvar_sort thy algbr eqngr) vs
haftmann@32873
   619
        ##>> translate_typ thy algbr eqngr ty
haftmann@32873
   620
        ##>> fold_map (translate_eqn thy algbr eqngr) eqns
haftmann@32872
   621
        #>> (fn info => Fun (c, info))
haftmann@32872
   622
      end;
haftmann@30932
   623
    val stmt_const = case Code.get_datatype_of_constr thy c
haftmann@30932
   624
     of SOME tyco => stmt_datatypecons tyco
haftmann@30932
   625
      | NONE => (case AxClass.class_of_param thy c
haftmann@30932
   626
         of SOME class => stmt_classparam class
haftmann@32873
   627
          | NONE => stmt_fun (Code_Preproc.eqns eqngr c))
haftmann@30932
   628
  in ensure_stmt lookup_const (declare_const thy) stmt_const c end
haftmann@32873
   629
and ensure_class thy (algbr as (_, algebra)) eqngr class =
haftmann@24918
   630
  let
haftmann@28924
   631
    val superclasses = (Sorts.minimize_sort algebra o Sorts.super_classes algebra) class;
wenzelm@24969
   632
    val cs = #params (AxClass.get_info thy class);
haftmann@24918
   633
    val stmt_class =
haftmann@32873
   634
      fold_map (fn superclass => ensure_class thy algbr eqngr superclass
haftmann@32873
   635
        ##>> ensure_classrel thy algbr eqngr (class, superclass)) superclasses
haftmann@32873
   636
      ##>> fold_map (fn (c, ty) => ensure_const thy algbr eqngr c
haftmann@32873
   637
        ##>> translate_typ thy algbr eqngr ty) cs
haftmann@28663
   638
      #>> (fn info => Class (class, (unprefix "'" Name.aT, info)))
haftmann@28663
   639
  in ensure_stmt lookup_class (declare_class thy) stmt_class class end
haftmann@32873
   640
and ensure_classrel thy algbr eqngr (subclass, superclass) =
haftmann@24918
   641
  let
haftmann@24918
   642
    val stmt_classrel =
haftmann@32873
   643
      ensure_class thy algbr eqngr subclass
haftmann@32873
   644
      ##>> ensure_class thy algbr eqngr superclass
haftmann@24918
   645
      #>> Classrel;
haftmann@28663
   646
  in ensure_stmt lookup_classrel (declare_classrel thy) stmt_classrel (subclass, superclass) end
haftmann@32873
   647
and ensure_inst thy (algbr as (_, algebra)) eqngr (class, tyco) =
haftmann@24918
   648
  let
haftmann@28924
   649
    val superclasses = (Sorts.minimize_sort algebra o Sorts.super_classes algebra) class;
wenzelm@24969
   650
    val classparams = these (try (#params o AxClass.get_info thy) class);
haftmann@24918
   651
    val vs = Name.names Name.context "'a" (Sorts.mg_domain algebra tyco [class]);
haftmann@24918
   652
    val sorts' = Sorts.mg_domain (Sign.classes_of thy) tyco [class];
haftmann@24918
   653
    val vs' = map2 (fn (v, sort1) => fn sort2 => (v,
haftmann@24918
   654
      Sorts.inter_sort (Sign.classes_of thy) (sort1, sort2))) vs sorts';
haftmann@24918
   655
    val arity_typ = Type (tyco, map TFree vs);
haftmann@24918
   656
    val arity_typ' = Type (tyco, map (fn (v, sort) => TVar ((v, 0), sort)) vs');
haftmann@28688
   657
    fun translate_superarity superclass =
haftmann@32873
   658
      ensure_class thy algbr eqngr superclass
haftmann@32873
   659
      ##>> ensure_classrel thy algbr eqngr (class, superclass)
haftmann@32873
   660
      ##>> translate_dicts thy algbr eqngr NONE (arity_typ, [superclass])
haftmann@24918
   661
      #>> (fn ((superclass, classrel), [DictConst (inst, dss)]) =>
haftmann@24918
   662
            (superclass, (classrel, (inst, dss))));
haftmann@28688
   663
    fun translate_classparam_inst (c, ty) =
haftmann@24918
   664
      let
haftmann@24918
   665
        val c_inst = Const (c, map_type_tfree (K arity_typ') ty);
haftmann@25597
   666
        val thm = AxClass.unoverload_conv thy (Thm.cterm_of thy c_inst);
haftmann@24918
   667
        val c_ty = (apsnd Logic.unvarifyT o dest_Const o snd
haftmann@24918
   668
          o Logic.dest_equals o Thm.prop_of) thm;
haftmann@24918
   669
      in
haftmann@32873
   670
        ensure_const thy algbr eqngr c
haftmann@32873
   671
        ##>> translate_const thy algbr eqngr (SOME thm) c_ty
haftmann@28350
   672
        #>> (fn (c, IConst c_inst) => ((c, c_inst), (thm, true)))
haftmann@24918
   673
      end;
haftmann@24918
   674
    val stmt_inst =
haftmann@32873
   675
      ensure_class thy algbr eqngr class
haftmann@32873
   676
      ##>> ensure_tyco thy algbr eqngr tyco
haftmann@32873
   677
      ##>> fold_map (translate_tyvar_sort thy algbr eqngr) vs
haftmann@28688
   678
      ##>> fold_map translate_superarity superclasses
haftmann@28688
   679
      ##>> fold_map translate_classparam_inst classparams
haftmann@24918
   680
      #>> (fn ((((class, tyco), arity), superarities), classparams) =>
haftmann@24918
   681
             Classinst ((class, (tyco, arity)), (superarities, classparams)));
haftmann@28663
   682
  in ensure_stmt lookup_instance (declare_instance thy) stmt_inst (class, tyco) end
haftmann@32873
   683
and translate_typ thy algbr eqngr (TFree (v, _)) =
haftmann@30932
   684
      pair (ITyVar (unprefix "'" v))
haftmann@32873
   685
  | translate_typ thy algbr eqngr (Type (tyco, tys)) =
haftmann@32873
   686
      ensure_tyco thy algbr eqngr tyco
haftmann@32873
   687
      ##>> fold_map (translate_typ thy algbr eqngr) tys
haftmann@30932
   688
      #>> (fn (tyco, tys) => tyco `%% tys)
haftmann@32873
   689
and translate_term thy algbr eqngr thm (Const (c, ty)) =
haftmann@32873
   690
      translate_app thy algbr eqngr thm ((c, ty), [])
haftmann@32873
   691
  | translate_term thy algbr eqngr thm (Free (v, _)) =
haftmann@31889
   692
      pair (IVar (SOME v))
haftmann@32873
   693
  | translate_term thy algbr eqngr thm (Abs (v, ty, t)) =
haftmann@24918
   694
      let
haftmann@32273
   695
        val (v', t') = Syntax.variant_abs (Name.desymbolize false v, ty, t);
haftmann@32273
   696
        val v'' = if member (op =) (Term.add_free_names t' []) v'
haftmann@32273
   697
          then SOME v' else NONE
haftmann@24918
   698
      in
haftmann@32873
   699
        translate_typ thy algbr eqngr ty
haftmann@32873
   700
        ##>> translate_term thy algbr eqngr thm t'
haftmann@32273
   701
        #>> (fn (ty, t) => (v'', ty) `|=> t)
haftmann@24918
   702
      end
haftmann@32873
   703
  | translate_term thy algbr eqngr thm (t as _ $ _) =
haftmann@24918
   704
      case strip_comb t
haftmann@24918
   705
       of (Const (c, ty), ts) =>
haftmann@32873
   706
            translate_app thy algbr eqngr thm ((c, ty), ts)
haftmann@24918
   707
        | (t', ts) =>
haftmann@32873
   708
            translate_term thy algbr eqngr thm t'
haftmann@32873
   709
            ##>> fold_map (translate_term thy algbr eqngr thm) ts
haftmann@24918
   710
            #>> (fn (t, ts) => t `$$ ts)
haftmann@32873
   711
and translate_eqn thy algbr eqngr (thm, proper) =
haftmann@30932
   712
  let
haftmann@30932
   713
    val (args, rhs) = (apfst (snd o strip_comb) o Logic.dest_equals
haftmann@30932
   714
      o Logic.unvarify o prop_of) thm;
haftmann@30932
   715
  in
haftmann@32873
   716
    fold_map (translate_term thy algbr eqngr (SOME thm)) args
haftmann@32873
   717
    ##>> translate_term thy algbr eqngr (SOME thm) rhs
haftmann@31088
   718
    #>> rpair (thm, proper)
haftmann@30932
   719
  end
haftmann@32873
   720
and translate_const thy algbr eqngr thm (c, ty) =
haftmann@26972
   721
  let
haftmann@26972
   722
    val tys = Sign.const_typargs thy (c, ty);
haftmann@32873
   723
    val sorts = Code_Preproc.sortargs eqngr c;
haftmann@26972
   724
    val tys_args = (fst o Term.strip_type) ty;
haftmann@26972
   725
  in
haftmann@32873
   726
    ensure_const thy algbr eqngr c
haftmann@32873
   727
    ##>> fold_map (translate_typ thy algbr eqngr) tys
haftmann@32873
   728
    ##>> fold_map (translate_dicts thy algbr eqngr thm) (tys ~~ sorts)
haftmann@32873
   729
    ##>> fold_map (translate_typ thy algbr eqngr) tys_args
haftmann@31049
   730
    #>> (fn (((c, tys), iss), tys_args) => IConst (c, ((tys, iss), tys_args)))
haftmann@26972
   731
  end
haftmann@32873
   732
and translate_app_const thy algbr eqngr thm (c_ty, ts) =
haftmann@32873
   733
  translate_const thy algbr eqngr thm c_ty
haftmann@32873
   734
  ##>> fold_map (translate_term thy algbr eqngr thm) ts
haftmann@24918
   735
  #>> (fn (t, ts) => t `$$ ts)
haftmann@32873
   736
and translate_case thy algbr eqngr thm (num_args, (t_pos, case_pats)) (c_ty, ts) =
haftmann@24918
   737
  let
haftmann@31892
   738
    fun arg_types num_args ty = (fst o chop num_args o fst o strip_type) ty;
haftmann@31892
   739
    val tys = arg_types num_args (snd c_ty);
haftmann@29952
   740
    val ty = nth tys t_pos;
haftmann@31957
   741
    fun mk_constr c t = let val n = Code.args_number thy c
haftmann@31957
   742
      in ((c, arg_types n (fastype_of t) ---> ty), n) end;
haftmann@31892
   743
    val constrs = if null case_pats then []
haftmann@31892
   744
      else map2 mk_constr case_pats (nth_drop t_pos ts);
haftmann@31892
   745
    fun casify naming constrs ty ts =
haftmann@24918
   746
      let
haftmann@31935
   747
        val undefineds = map_filter (lookup_const naming) (Code.undefineds thy);
haftmann@31935
   748
        fun collapse_clause vs_map ts body =
haftmann@31935
   749
          let
haftmann@31935
   750
          in case body
haftmann@31935
   751
           of IConst (c, _) => if member (op =) undefineds c
haftmann@31935
   752
                then []
haftmann@31935
   753
                else [(ts, body)]
haftmann@31935
   754
            | ICase (((IVar (SOME v), _), subclauses), _) =>
haftmann@31935
   755
                if forall (fn (pat', body') => exists_var pat' v
haftmann@31935
   756
                  orelse not (exists_var body' v)) subclauses
haftmann@31935
   757
                then case AList.lookup (op =) vs_map v
haftmann@31935
   758
                 of SOME i => maps (fn (pat', body') =>
haftmann@31935
   759
                      collapse_clause (AList.delete (op =) v vs_map)
haftmann@31935
   760
                        (nth_map i (K pat') ts) body') subclauses
haftmann@31935
   761
                  | NONE => [(ts, body)]
haftmann@31935
   762
                else [(ts, body)]
haftmann@31935
   763
            | _ => [(ts, body)]
haftmann@31935
   764
          end;
haftmann@31935
   765
        fun mk_clause mk tys t =
haftmann@31935
   766
          let
haftmann@31935
   767
            val (vs, body) = unfold_abs_eta tys t;
haftmann@31935
   768
            val vs_map = fold_index (fn (i, (SOME v, _)) => cons (v, i) | _ => I) vs [];
haftmann@31935
   769
            val ts = map (IVar o fst) vs;
haftmann@31935
   770
          in map mk (collapse_clause vs_map ts body) end;
haftmann@31892
   771
        val t = nth ts t_pos;
haftmann@31892
   772
        val ts_clause = nth_drop t_pos ts;
haftmann@31935
   773
        val clauses = if null case_pats
haftmann@31935
   774
          then mk_clause (fn ([t], body) => (t, body)) [ty] (the_single ts_clause)
haftmann@31935
   775
          else maps (fn ((constr as IConst (_, (_, tys)), n), t) =>
haftmann@31935
   776
            mk_clause (fn (ts, body) => (constr `$$ ts, body)) (curry Library.take n tys) t)
haftmann@31935
   777
              (constrs ~~ ts_clause);
haftmann@31892
   778
      in ((t, ty), clauses) end;
haftmann@24918
   779
  in
haftmann@32873
   780
    translate_const thy algbr eqngr thm c_ty
haftmann@32873
   781
    ##>> fold_map (fn (constr, n) => translate_const thy algbr eqngr thm constr #>> rpair n) constrs
haftmann@32873
   782
    ##>> translate_typ thy algbr eqngr ty
haftmann@32873
   783
    ##>> fold_map (translate_term thy algbr eqngr thm) ts
haftmann@31892
   784
    #-> (fn (((t, constrs), ty), ts) =>
haftmann@31892
   785
      `(fn (_, (naming, _)) => ICase (casify naming constrs ty ts, t `$$ ts)))
haftmann@24918
   786
  end
haftmann@32873
   787
and translate_app_case thy algbr eqngr thm (case_scheme as (num_args, _)) ((c, ty), ts) =
haftmann@29973
   788
  if length ts < num_args then
haftmann@29973
   789
    let
haftmann@29973
   790
      val k = length ts;
haftmann@29973
   791
      val tys = (curry Library.take (num_args - k) o curry Library.drop k o fst o strip_type) ty;
haftmann@29973
   792
      val ctxt = (fold o fold_aterms) Term.declare_term_frees ts Name.context;
haftmann@29973
   793
      val vs = Name.names ctxt "a" tys;
haftmann@29973
   794
    in
haftmann@32873
   795
      fold_map (translate_typ thy algbr eqngr) tys
haftmann@32873
   796
      ##>> translate_case thy algbr eqngr thm case_scheme ((c, ty), ts @ map Free vs)
haftmann@31888
   797
      #>> (fn (tys, t) => map2 (fn (v, _) => pair (SOME v)) vs tys `|==> t)
haftmann@29973
   798
    end
haftmann@29973
   799
  else if length ts > num_args then
haftmann@32873
   800
    translate_case thy algbr eqngr thm case_scheme ((c, ty), Library.take (num_args, ts))
haftmann@32873
   801
    ##>> fold_map (translate_term thy algbr eqngr thm) (Library.drop (num_args, ts))
haftmann@29973
   802
    #>> (fn (t, ts) => t `$$ ts)
haftmann@29973
   803
  else
haftmann@32873
   804
    translate_case thy algbr eqngr thm case_scheme ((c, ty), ts)
haftmann@32873
   805
and translate_app thy algbr eqngr thm (c_ty_ts as ((c, _), _)) =
haftmann@29973
   806
  case Code.get_case_scheme thy c
haftmann@32873
   807
   of SOME case_scheme => translate_app_case thy algbr eqngr thm case_scheme c_ty_ts
haftmann@32873
   808
    | NONE => translate_app_const thy algbr eqngr thm c_ty_ts
haftmann@32873
   809
and translate_tyvar_sort thy (algbr as (proj_sort, _)) eqngr (v, sort) =
haftmann@32873
   810
  fold_map (ensure_class thy algbr eqngr) (proj_sort sort)
haftmann@30932
   811
  #>> (fn sort => (unprefix "'" v, sort))
haftmann@32873
   812
and translate_dicts thy (algbr as (proj_sort, algebra)) eqngr thm (ty, sort) =
haftmann@30932
   813
  let
haftmann@30932
   814
    datatype typarg =
haftmann@30932
   815
        Global of (class * string) * typarg list list
haftmann@30932
   816
      | Local of (class * class) list * (string * (int * sort));
haftmann@30932
   817
    fun class_relation (Global ((_, tyco), yss), _) class =
haftmann@30932
   818
          Global ((class, tyco), yss)
haftmann@30932
   819
      | class_relation (Local (classrels, v), subclass) superclass =
haftmann@30932
   820
          Local ((subclass, superclass) :: classrels, v);
haftmann@30932
   821
    fun type_constructor tyco yss class =
haftmann@30932
   822
      Global ((class, tyco), (map o map) fst yss);
haftmann@30932
   823
    fun type_variable (TFree (v, sort)) =
haftmann@30932
   824
      let
haftmann@30932
   825
        val sort' = proj_sort sort;
haftmann@30932
   826
      in map_index (fn (n, class) => (Local ([], (v, (n, sort'))), class)) sort' end;
wenzelm@32795
   827
    val typargs = Sorts.of_sort_derivation algebra
haftmann@30932
   828
      {class_relation = class_relation, type_constructor = type_constructor,
haftmann@30932
   829
       type_variable = type_variable} (ty, proj_sort sort)
haftmann@30932
   830
      handle Sorts.CLASS_ERROR e => not_wellsorted thy thm ty sort e;
haftmann@30932
   831
    fun mk_dict (Global (inst, yss)) =
haftmann@32873
   832
          ensure_inst thy algbr eqngr inst
haftmann@30932
   833
          ##>> (fold_map o fold_map) mk_dict yss
haftmann@30932
   834
          #>> (fn (inst, dss) => DictConst (inst, dss))
haftmann@31962
   835
      | mk_dict (Local (classrels, (v, (n, sort)))) =
haftmann@32873
   836
          fold_map (ensure_classrel thy algbr eqngr) classrels
haftmann@31962
   837
          #>> (fn classrels => DictVar (classrels, (unprefix "'" v, (n, length sort))))
haftmann@30932
   838
  in fold_map mk_dict typargs end;
haftmann@24918
   839
haftmann@25969
   840
haftmann@27103
   841
(* store *)
haftmann@27103
   842
haftmann@31962
   843
structure Program = Code_Data_Fun
haftmann@27103
   844
(
haftmann@28663
   845
  type T = naming * program;
haftmann@28663
   846
  val empty = (empty_naming, Graph.empty);
haftmann@28706
   847
  fun purge thy cs (naming, program) =
haftmann@27609
   848
    let
haftmann@28706
   849
      val names_delete = cs
haftmann@28706
   850
        |> map_filter (lookup_const naming)
haftmann@28706
   851
        |> filter (can (Graph.get_node program))
haftmann@28706
   852
        |> Graph.all_preds program;
haftmann@28706
   853
      val program' = Graph.del_nodes names_delete program;
haftmann@28706
   854
    in (naming, program') end;
haftmann@27103
   855
);
haftmann@27103
   856
haftmann@27103
   857
val cached_program = Program.get;
haftmann@25969
   858
haftmann@32873
   859
fun invoke_generation thy (algebra, eqngr) f name =
haftmann@28663
   860
  Program.change_yield thy (fn naming_program => (NONE, naming_program)
haftmann@32873
   861
    |> f thy algebra eqngr name
haftmann@28663
   862
    |-> (fn name => fn (_, naming_program) => (name, naming_program)));
haftmann@27103
   863
haftmann@27103
   864
haftmann@27103
   865
(* program generation *)
haftmann@27103
   866
haftmann@27103
   867
fun consts_program thy cs =
haftmann@27103
   868
  let
haftmann@28663
   869
    fun project_consts cs (naming, program) =
haftmann@27103
   870
      let
haftmann@27103
   871
        val cs_all = Graph.all_succs program cs;
haftmann@28663
   872
      in (cs, (naming, Graph.subgraph (member (op =) cs_all) program)) end;
haftmann@32873
   873
    fun generate_consts thy algebra eqngr =
haftmann@32873
   874
      fold_map (ensure_const thy algebra eqngr);
haftmann@27103
   875
  in
haftmann@31125
   876
    invoke_generation thy (Code_Preproc.obtain thy cs []) generate_consts cs
haftmann@27103
   877
    |-> project_consts
haftmann@27103
   878
  end;
haftmann@27103
   879
haftmann@27103
   880
haftmann@27103
   881
(* value evaluation *)
haftmann@25969
   882
haftmann@32873
   883
fun ensure_value thy algbr eqngr t =
haftmann@24918
   884
  let
haftmann@24918
   885
    val ty = fastype_of t;
haftmann@24918
   886
    val vs = fold_term_types (K (fold_atyps (insert (eq_fst op =)
haftmann@24918
   887
      o dest_TFree))) t [];
haftmann@24918
   888
    val stmt_value =
haftmann@32873
   889
      fold_map (translate_tyvar_sort thy algbr eqngr) vs
haftmann@32873
   890
      ##>> translate_typ thy algbr eqngr ty
haftmann@32873
   891
      ##>> translate_term thy algbr eqngr NONE t
haftmann@28663
   892
      #>> (fn ((vs, ty), t) => Fun
haftmann@28663
   893
        (Term.dummy_patternN, ((vs, ty), [(([], t), (Drule.dummy_thm, true))])));
haftmann@31063
   894
    fun term_value (dep, (naming, program1)) =
haftmann@25969
   895
      let
haftmann@30947
   896
        val Fun (_, (vs_ty, [(([], t), _)])) =
haftmann@28663
   897
          Graph.get_node program1 Term.dummy_patternN;
haftmann@28663
   898
        val deps = Graph.imm_succs program1 Term.dummy_patternN;
haftmann@28663
   899
        val program2 = Graph.del_nodes [Term.dummy_patternN] program1;
haftmann@27103
   900
        val deps_all = Graph.all_succs program2 deps;
haftmann@27103
   901
        val program3 = Graph.subgraph (member (op =) deps_all) program2;
haftmann@31063
   902
      in (((naming, program3), ((vs_ty, t), deps)), (dep, (naming, program2))) end;
haftmann@26011
   903
  in
haftmann@28663
   904
    ensure_stmt ((K o K) NONE) pair stmt_value Term.dummy_patternN
haftmann@26011
   905
    #> snd
haftmann@31063
   906
    #> term_value
haftmann@26011
   907
  end;
haftmann@24219
   908
haftmann@32873
   909
fun base_evaluator thy evaluator algebra eqngr vs t =
haftmann@30942
   910
  let
haftmann@31063
   911
    val (((naming, program), (((vs', ty'), t'), deps)), _) =
haftmann@32873
   912
      invoke_generation thy (algebra, eqngr) ensure_value t;
haftmann@30947
   913
    val vs'' = map (fn (v, _) => (v, (the o AList.lookup (op =) vs o prefix "'") v)) vs';
haftmann@31063
   914
  in evaluator naming program ((vs'', (vs', ty')), t') deps end;
haftmann@30942
   915
haftmann@32123
   916
fun eval_conv thy = Code_Preproc.eval_conv thy o base_evaluator thy;
haftmann@32123
   917
fun eval thy postproc = Code_Preproc.eval thy postproc o base_evaluator thy;
haftmann@30942
   918
haftmann@30942
   919
haftmann@30942
   920
(** diagnostic commands **)
haftmann@30942
   921
haftmann@31036
   922
fun read_const_exprs thy =
haftmann@31036
   923
  let
haftmann@31036
   924
    fun consts_of some_thyname =
haftmann@31036
   925
      let
haftmann@31036
   926
        val thy' = case some_thyname
haftmann@31036
   927
         of SOME thyname => ThyInfo.the_theory thyname thy
haftmann@31036
   928
          | NONE => thy;
haftmann@31036
   929
        val cs = Symtab.fold (fn (c, (_, NONE)) => cons c | _ => I)
haftmann@31036
   930
          ((snd o #constants o Consts.dest o #consts o Sign.rep_sg) thy') [];
haftmann@31036
   931
        fun belongs_here c =
haftmann@31036
   932
          not (exists (fn thy'' => Sign.declared_const thy'' c) (Theory.parents_of thy'))
haftmann@31036
   933
      in case some_thyname
haftmann@31036
   934
       of NONE => cs
haftmann@31036
   935
        | SOME thyname => filter belongs_here cs
haftmann@31036
   936
      end;
haftmann@31036
   937
    fun read_const_expr "*" = ([], consts_of NONE)
haftmann@31036
   938
      | read_const_expr s = if String.isSuffix ".*" s
haftmann@31036
   939
          then ([], consts_of (SOME (unsuffix ".*" s)))
haftmann@31156
   940
          else ([Code.read_const thy s], []);
haftmann@31036
   941
  in pairself flat o split_list o map read_const_expr end;
haftmann@31036
   942
haftmann@30942
   943
fun code_depgr thy consts =
haftmann@30942
   944
  let
haftmann@31125
   945
    val (_, eqngr) = Code_Preproc.obtain thy consts [];
haftmann@30942
   946
    val select = Graph.all_succs eqngr consts;
haftmann@30942
   947
  in
haftmann@30942
   948
    eqngr
haftmann@30942
   949
    |> not (null consts) ? Graph.subgraph (member (op =) select) 
haftmann@30942
   950
    |> Graph.map_nodes ((apsnd o map o apfst) (AxClass.overload thy))
haftmann@30942
   951
  end;
haftmann@30942
   952
haftmann@31125
   953
fun code_thms thy = Pretty.writeln o Code_Preproc.pretty thy o code_depgr thy;
haftmann@30942
   954
haftmann@30942
   955
fun code_deps thy consts =
haftmann@27103
   956
  let
haftmann@30942
   957
    val eqngr = code_depgr thy consts;
haftmann@30942
   958
    val constss = Graph.strong_conn eqngr;
haftmann@30942
   959
    val mapping = Symtab.empty |> fold (fn consts => fold (fn const =>
haftmann@30942
   960
      Symtab.update (const, consts)) consts) constss;
haftmann@30942
   961
    fun succs consts = consts
haftmann@30942
   962
      |> maps (Graph.imm_succs eqngr)
haftmann@30942
   963
      |> subtract (op =) consts
haftmann@30942
   964
      |> map (the o Symtab.lookup mapping)
haftmann@30942
   965
      |> distinct (op =);
haftmann@30942
   966
    val conn = [] |> fold (fn consts => cons (consts, succs consts)) constss;
haftmann@31156
   967
    fun namify consts = map (Code.string_of_const thy) consts
haftmann@30942
   968
      |> commas;
haftmann@30942
   969
    val prgr = map (fn (consts, constss) =>
haftmann@30942
   970
      { name = namify consts, ID = namify consts, dir = "", unfold = true,
haftmann@30942
   971
        path = "", parents = map namify constss }) conn;
haftmann@30942
   972
  in Present.display_graph prgr end;
haftmann@30942
   973
haftmann@30942
   974
local
haftmann@27103
   975
haftmann@30942
   976
structure P = OuterParse
haftmann@30942
   977
and K = OuterKeyword
haftmann@30942
   978
haftmann@31036
   979
fun code_thms_cmd thy = code_thms thy o op @ o read_const_exprs thy;
haftmann@31036
   980
fun code_deps_cmd thy = code_deps thy o op @ o read_const_exprs thy;
haftmann@30942
   981
haftmann@30942
   982
in
haftmann@30942
   983
haftmann@30942
   984
val _ =
haftmann@30942
   985
  OuterSyntax.improper_command "code_thms" "print system of code equations for code" OuterKeyword.diag
haftmann@30942
   986
    (Scan.repeat P.term_group
haftmann@30942
   987
      >> (fn cs => Toplevel.no_timing o Toplevel.unknown_theory
haftmann@30942
   988
        o Toplevel.keep ((fn thy => code_thms_cmd thy cs) o Toplevel.theory_of)));
haftmann@30942
   989
haftmann@30942
   990
val _ =
haftmann@30942
   991
  OuterSyntax.improper_command "code_deps" "visualize dependencies of code equations for code" OuterKeyword.diag
haftmann@30942
   992
    (Scan.repeat P.term_group
haftmann@30942
   993
      >> (fn cs => Toplevel.no_timing o Toplevel.unknown_theory
haftmann@30942
   994
        o Toplevel.keep ((fn thy => code_deps_cmd thy cs) o Toplevel.theory_of)));
haftmann@30942
   995
haftmann@30942
   996
end;
haftmann@27103
   997
haftmann@24219
   998
end; (*struct*)
haftmann@24219
   999
haftmann@24219
  1000
haftmann@28054
  1001
structure Basic_Code_Thingol: BASIC_CODE_THINGOL = Code_Thingol;