src/Tools/Code/code_thingol.ML
author haftmann
Tue Jun 15 11:38:40 2010 +0200 (2010-06-15)
changeset 37440 a5d44161ba2a
parent 37437 4202e11ae7dc
child 37445 e372fa3c7239
permissions -rw-r--r--
maintain cong rules for case combinators; more precise permissiveness
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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 fun_tyco: string
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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 option * bool)) list) * thm option)
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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) (*class and arity*) )
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          * (((class * (string * (string * dict list list))) list (*super instances*)
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            * (class * class) list list (*type argument weakening mapping*))
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        * ((string * const) * (thm * bool)) list (*class parameter instances*))
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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 is_case: stmt -> 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 read_const_exprs: theory -> string list -> string list * string list
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  val consts_program: theory -> bool -> string list -> string list * (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" ((take l o 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_type_of_constr_or_abstr thy c
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       of SOME (tyco, _) => Codegen.thyname_of_type thy tyco
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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 (sub_class, super_class) => 
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    Long_Name.base_name super_class ^ "_" ^ Long_Name.base_name sub_class)
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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@37384
   391
val fun_tyco = Long_Name.append (namify_tyco Pure.thy "fun") suffix_tyco
haftmann@37384
   392
  (*depends on add_suffix*);
haftmann@34084
   393
haftmann@28688
   394
val unfold_fun = unfoldr
haftmann@34084
   395
  (fn tyco `%% [ty1, ty2] => if tyco = fun_tyco then SOME (ty1, ty2) else NONE
haftmann@37384
   396
    | _ => NONE);
haftmann@28688
   397
haftmann@28688
   398
end; (* local *)
haftmann@28688
   399
haftmann@24219
   400
haftmann@27103
   401
(** statements, abstract programs **)
haftmann@24219
   402
haftmann@24219
   403
type typscheme = (vname * sort) list * itype;
haftmann@24918
   404
datatype stmt =
haftmann@27024
   405
    NoStmt
haftmann@37437
   406
  | Fun of string * ((typscheme * ((iterm list * iterm) * (thm option * bool)) list) * thm option)
haftmann@28663
   407
  | Datatype of string * ((vname * sort) list * (string * itype list) list)
haftmann@28663
   408
  | Datatypecons of string * string
haftmann@28663
   409
  | Class of class * (vname * ((class * string) list * (string * itype) list))
haftmann@24219
   410
  | Classrel of class * class
haftmann@28663
   411
  | Classparam of string * class
haftmann@24219
   412
  | Classinst of (class * (string * (vname * sort) list))
haftmann@37384
   413
        * (((class * (string * (string * dict list list))) list
haftmann@37384
   414
          * (class * class) list list)
haftmann@37384
   415
      * ((string * const) * (thm * bool)) list) (*see also signature*);
haftmann@24219
   416
haftmann@27103
   417
type program = stmt Graph.T;
haftmann@24219
   418
haftmann@27103
   419
fun empty_funs program =
haftmann@37437
   420
  Graph.fold (fn (name, (Fun (c, ((_, []), _)), _)) => cons c
haftmann@27103
   421
               | _ => I) program [];
haftmann@24219
   422
haftmann@27711
   423
fun map_terms_bottom_up f (t as IConst _) = f t
haftmann@27711
   424
  | map_terms_bottom_up f (t as IVar _) = f t
haftmann@27711
   425
  | map_terms_bottom_up f (t1 `$ t2) = f
haftmann@27711
   426
      (map_terms_bottom_up f t1 `$ map_terms_bottom_up f t2)
haftmann@31724
   427
  | map_terms_bottom_up f ((v, ty) `|=> t) = f
haftmann@31724
   428
      ((v, ty) `|=> map_terms_bottom_up f t)
haftmann@27711
   429
  | map_terms_bottom_up f (ICase (((t, ty), ps), t0)) = f
haftmann@27711
   430
      (ICase (((map_terms_bottom_up f t, ty), (map o pairself)
haftmann@27711
   431
        (map_terms_bottom_up f) ps), map_terms_bottom_up f t0));
haftmann@27711
   432
haftmann@27711
   433
fun map_terms_stmt f NoStmt = NoStmt
haftmann@37437
   434
  | map_terms_stmt f (Fun (c, ((tysm, eqs), case_cong))) = Fun (c, ((tysm, (map o apfst)
haftmann@37437
   435
      (fn (ts, t) => (map f ts, f t)) eqs), case_cong))
haftmann@27711
   436
  | map_terms_stmt f (stmt as Datatype _) = stmt
haftmann@27711
   437
  | map_terms_stmt f (stmt as Datatypecons _) = stmt
haftmann@27711
   438
  | map_terms_stmt f (stmt as Class _) = stmt
haftmann@27711
   439
  | map_terms_stmt f (stmt as Classrel _) = stmt
haftmann@27711
   440
  | map_terms_stmt f (stmt as Classparam _) = stmt
haftmann@37384
   441
  | map_terms_stmt f (Classinst (arity, ((super_instances, weakening), classparams))) =
haftmann@37384
   442
      Classinst (arity, ((super_instances, weakening), (map o apfst o apsnd) (fn const =>
haftmann@33990
   443
        case f (IConst const) of IConst const' => const') classparams));
haftmann@27711
   444
haftmann@27103
   445
fun is_cons program name = case Graph.get_node program name
haftmann@24219
   446
 of Datatypecons _ => true
haftmann@24219
   447
  | _ => false;
haftmann@24219
   448
haftmann@37440
   449
fun is_case (Fun (_, (_, SOME _))) = true
haftmann@37440
   450
  | is_case _ = false;
haftmann@37440
   451
haftmann@27103
   452
fun contr_classparam_typs program name = case Graph.get_node program name
haftmann@28663
   453
 of Classparam (_, class) => let
haftmann@28663
   454
        val Class (_, (_, (_, params))) = Graph.get_node program class;
haftmann@25621
   455
        val SOME ty = AList.lookup (op =) params name;
haftmann@25621
   456
        val (tys, res_ty) = unfold_fun ty;
haftmann@25621
   457
        fun no_tyvar (_ `%% tys) = forall no_tyvar tys
haftmann@25621
   458
          | no_tyvar (ITyVar _) = false;
haftmann@25621
   459
      in if no_tyvar res_ty
haftmann@25621
   460
        then map (fn ty => if no_tyvar ty then NONE else SOME ty) tys
haftmann@25621
   461
        else []
haftmann@25621
   462
      end
haftmann@25621
   463
  | _ => [];
haftmann@25621
   464
haftmann@32895
   465
fun labelled_name thy program name = case Graph.get_node program name
haftmann@32895
   466
 of Fun (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   467
  | Datatype (tyco, _) => "type " ^ quote (Sign.extern_type thy tyco)
haftmann@32895
   468
  | Datatypecons (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   469
  | Class (class, _) => "class " ^ quote (Sign.extern_class thy class)
haftmann@32895
   470
  | Classrel (sub, super) => let
haftmann@32895
   471
        val Class (sub, _) = Graph.get_node program sub
haftmann@32895
   472
        val Class (super, _) = Graph.get_node program super
haftmann@32895
   473
      in quote (Sign.extern_class thy sub ^ " < " ^ Sign.extern_class thy super) end
haftmann@32895
   474
  | Classparam (c, _) => quote (Code.string_of_const thy c)
haftmann@32895
   475
  | Classinst ((class, (tyco, _)), _) => let
haftmann@32895
   476
        val Class (class, _) = Graph.get_node program class
haftmann@32895
   477
        val Datatype (tyco, _) = Graph.get_node program tyco
haftmann@32895
   478
      in quote (Sign.extern_type thy tyco ^ " :: " ^ Sign.extern_class thy class) end
haftmann@32895
   479
haftmann@37440
   480
fun linear_stmts program =
haftmann@37440
   481
  rev (Graph.strong_conn program)
haftmann@37440
   482
  |> map (AList.make (Graph.get_node program));
haftmann@37440
   483
haftmann@32895
   484
fun group_stmts thy program =
haftmann@32895
   485
  let
haftmann@32895
   486
    fun is_fun (_, Fun _) = true | is_fun _ = false;
haftmann@32895
   487
    fun is_datatypecons (_, Datatypecons _) = true | is_datatypecons _ = false;
haftmann@32895
   488
    fun is_datatype (_, Datatype _) = true | is_datatype _ = false;
haftmann@32895
   489
    fun is_class (_, Class _) = true | is_class _ = false;
haftmann@32895
   490
    fun is_classrel (_, Classrel _) = true | is_classrel _ = false;
haftmann@32895
   491
    fun is_classparam (_, Classparam _) = true | is_classparam _ = false;
haftmann@32895
   492
    fun is_classinst (_, Classinst _) = true | is_classinst _ = false;
haftmann@32895
   493
    fun group stmts =
haftmann@32895
   494
      if forall (is_datatypecons orf is_datatype) stmts
haftmann@32895
   495
      then (filter is_datatype stmts, [], ([], []))
haftmann@32895
   496
      else if forall (is_class orf is_classrel orf is_classparam) stmts
haftmann@32895
   497
      then ([], filter is_class stmts, ([], []))
haftmann@32895
   498
      else if forall (is_fun orf is_classinst) stmts
haftmann@32895
   499
      then ([], [], List.partition is_fun stmts)
haftmann@32895
   500
      else error ("Illegal mutual dependencies: " ^
haftmann@32895
   501
        (commas o map (labelled_name thy program o fst)) stmts)
haftmann@32895
   502
  in
haftmann@37440
   503
    linear_stmts program
haftmann@32895
   504
    |> map group
haftmann@32895
   505
  end;
haftmann@32895
   506
haftmann@24219
   507
haftmann@27103
   508
(** translation kernel **)
haftmann@24219
   509
haftmann@28724
   510
(* generic mechanisms *)
haftmann@28724
   511
haftmann@28663
   512
fun ensure_stmt lookup declare generate thing (dep, (naming, program)) =
haftmann@24219
   513
  let
haftmann@28706
   514
    fun add_dep name = case dep of NONE => I
haftmann@28706
   515
      | SOME dep => Graph.add_edge (dep, name);
haftmann@28706
   516
    val (name, naming') = case lookup naming thing
haftmann@28706
   517
     of SOME name => (name, naming)
haftmann@28706
   518
      | NONE => declare thing naming;
haftmann@28706
   519
  in case try (Graph.get_node program) name
haftmann@28706
   520
   of SOME stmt => program
haftmann@28663
   521
        |> add_dep name
haftmann@28706
   522
        |> pair naming'
haftmann@28663
   523
        |> pair dep
haftmann@28663
   524
        |> pair name
haftmann@28706
   525
    | NONE => program
haftmann@28706
   526
        |> Graph.default_node (name, NoStmt)
haftmann@28706
   527
        |> add_dep name
haftmann@28706
   528
        |> pair naming'
haftmann@28706
   529
        |> curry generate (SOME name)
haftmann@28706
   530
        ||> snd
haftmann@28706
   531
        |-> (fn stmt => (apsnd o Graph.map_node name) (K stmt))
haftmann@28706
   532
        |> pair dep
haftmann@28706
   533
        |> pair name
haftmann@24219
   534
  end;
haftmann@24219
   535
haftmann@36272
   536
exception PERMISSIVE of unit;
haftmann@36272
   537
haftmann@36272
   538
fun translation_error thy permissive some_thm msg sub_msg =
haftmann@36272
   539
  if permissive
haftmann@36272
   540
  then raise PERMISSIVE ()
haftmann@36272
   541
  else let
haftmann@35226
   542
    val err_thm = case some_thm
haftmann@36272
   543
     of SOME thm => "\n(in code equation " ^ Display.string_of_thm_global thy thm ^ ")"
haftmann@36272
   544
      | NONE => "";
haftmann@35226
   545
  in error (msg ^ err_thm ^ ":\n" ^ sub_msg) end;
haftmann@35226
   546
haftmann@36272
   547
fun not_wellsorted thy permissive some_thm ty sort e =
haftmann@26972
   548
  let
haftmann@26972
   549
    val err_class = Sorts.class_error (Syntax.pp_global thy) e;
haftmann@26972
   550
    val err_typ = "Type " ^ Syntax.string_of_typ_global thy ty ^ " not of sort "
haftmann@26972
   551
      ^ Syntax.string_of_sort_global thy sort;
haftmann@36272
   552
  in translation_error thy permissive some_thm "Wellsortedness error" (err_typ ^ "\n" ^ err_class) end;
haftmann@26972
   553
haftmann@28724
   554
haftmann@28724
   555
(* translation *)
haftmann@28724
   556
haftmann@36272
   557
fun ensure_tyco thy algbr eqngr permissive tyco =
haftmann@30932
   558
  let
haftmann@36272
   559
    val (vs, cos) = Code.get_type thy tyco;
haftmann@30932
   560
    val stmt_datatype =
haftmann@36272
   561
      fold_map (translate_tyvar_sort thy algbr eqngr permissive) vs
haftmann@36272
   562
      ##>> fold_map (fn (c, tys) =>
haftmann@36272
   563
        ensure_const thy algbr eqngr permissive c
haftmann@36272
   564
        ##>> fold_map (translate_typ thy algbr eqngr permissive) tys) cos
haftmann@36272
   565
      #>> (fn info => Datatype (tyco, info));
haftmann@30932
   566
  in ensure_stmt lookup_tyco (declare_tyco thy) stmt_datatype tyco end
haftmann@36272
   567
and ensure_const thy algbr eqngr permissive c =
haftmann@30932
   568
  let
haftmann@30932
   569
    fun stmt_datatypecons tyco =
haftmann@36272
   570
      ensure_tyco thy algbr eqngr permissive tyco
haftmann@30932
   571
      #>> (fn tyco => Datatypecons (c, tyco));
haftmann@30932
   572
    fun stmt_classparam class =
haftmann@36272
   573
      ensure_class thy algbr eqngr permissive class
haftmann@30932
   574
      #>> (fn class => Classparam (c, class));
haftmann@34891
   575
    fun stmt_fun cert =
haftmann@32872
   576
      let
haftmann@35226
   577
        val ((vs, ty), eqns) = Code.equations_of_cert thy cert;
haftmann@37440
   578
        val some_case_cong = Code.get_case_cong thy c;
haftmann@32872
   579
      in
haftmann@36272
   580
        fold_map (translate_tyvar_sort thy algbr eqngr permissive) vs
haftmann@36272
   581
        ##>> translate_typ thy algbr eqngr permissive ty
haftmann@37440
   582
        ##>> translate_eqns thy algbr eqngr permissive eqns
haftmann@37440
   583
        #>> (fn info => Fun (c, (info, some_case_cong)))
haftmann@32872
   584
      end;
haftmann@35299
   585
    val stmt_const = case Code.get_type_of_constr_or_abstr thy c
haftmann@35226
   586
     of SOME (tyco, _) => stmt_datatypecons tyco
haftmann@30932
   587
      | NONE => (case AxClass.class_of_param thy c
haftmann@30932
   588
         of SOME class => stmt_classparam class
haftmann@34891
   589
          | NONE => stmt_fun (Code_Preproc.cert eqngr c))
haftmann@30932
   590
  in ensure_stmt lookup_const (declare_const thy) stmt_const c end
haftmann@36272
   591
and ensure_class thy (algbr as (_, algebra)) eqngr permissive class =
haftmann@24918
   592
  let
haftmann@37384
   593
    val super_classes = (Sorts.minimize_sort algebra o Sorts.super_classes algebra) class;
wenzelm@24969
   594
    val cs = #params (AxClass.get_info thy class);
haftmann@24918
   595
    val stmt_class =
haftmann@37384
   596
      fold_map (fn super_class => ensure_class thy algbr eqngr permissive super_class
haftmann@37384
   597
        ##>> ensure_classrel thy algbr eqngr permissive (class, super_class)) super_classes
haftmann@36272
   598
      ##>> fold_map (fn (c, ty) => ensure_const thy algbr eqngr permissive c
haftmann@36272
   599
        ##>> translate_typ thy algbr eqngr permissive ty) cs
haftmann@28663
   600
      #>> (fn info => Class (class, (unprefix "'" Name.aT, info)))
haftmann@28663
   601
  in ensure_stmt lookup_class (declare_class thy) stmt_class class end
haftmann@37384
   602
and ensure_classrel thy algbr eqngr permissive (sub_class, super_class) =
haftmann@24918
   603
  let
haftmann@24918
   604
    val stmt_classrel =
haftmann@37384
   605
      ensure_class thy algbr eqngr permissive sub_class
haftmann@37384
   606
      ##>> ensure_class thy algbr eqngr permissive super_class
haftmann@24918
   607
      #>> Classrel;
haftmann@37384
   608
  in ensure_stmt lookup_classrel (declare_classrel thy) stmt_classrel (sub_class, super_class) end
haftmann@36272
   609
and ensure_inst thy (algbr as (_, algebra)) eqngr permissive (class, tyco) =
haftmann@24918
   610
  let
haftmann@37384
   611
    val super_classes = (Sorts.minimize_sort algebra o Sorts.super_classes algebra) class;
wenzelm@24969
   612
    val classparams = these (try (#params o AxClass.get_info thy) class);
haftmann@24918
   613
    val vs = Name.names Name.context "'a" (Sorts.mg_domain algebra tyco [class]);
haftmann@24918
   614
    val sorts' = Sorts.mg_domain (Sign.classes_of thy) tyco [class];
haftmann@24918
   615
    val vs' = map2 (fn (v, sort1) => fn sort2 => (v,
haftmann@24918
   616
      Sorts.inter_sort (Sign.classes_of thy) (sort1, sort2))) vs sorts';
haftmann@24918
   617
    val arity_typ = Type (tyco, map TFree vs);
haftmann@24918
   618
    val arity_typ' = Type (tyco, map (fn (v, sort) => TVar ((v, 0), sort)) vs');
haftmann@37384
   619
    fun translate_super_instance super_class =
haftmann@37384
   620
      ensure_class thy algbr eqngr permissive super_class
haftmann@37384
   621
      ##>> ensure_classrel thy algbr eqngr permissive (class, super_class)
haftmann@37384
   622
      ##>> translate_dicts thy algbr eqngr permissive NONE (arity_typ, [super_class])
haftmann@37384
   623
      #>> (fn ((super_class, classrel), [DictConst (inst, dss)]) =>
haftmann@37384
   624
            (super_class, (classrel, (inst, dss))));
haftmann@37384
   625
    fun translate_classparam_instance (c, ty) =
haftmann@24918
   626
      let
haftmann@37384
   627
        val raw_const = Const (c, map_type_tfree (K arity_typ') ty);
haftmann@37384
   628
        val thm = AxClass.unoverload_conv thy (Thm.cterm_of thy raw_const);
haftmann@37384
   629
        val const = (apsnd Logic.unvarifyT_global o dest_Const o snd
haftmann@24918
   630
          o Logic.dest_equals o Thm.prop_of) thm;
haftmann@24918
   631
      in
haftmann@36272
   632
        ensure_const thy algbr eqngr permissive c
haftmann@37384
   633
        ##>> translate_const thy algbr eqngr permissive (SOME thm) (const, NONE)
haftmann@37384
   634
        #>> (fn (c, IConst const') => ((c, const'), (thm, true)))
haftmann@24918
   635
      end;
haftmann@24918
   636
    val stmt_inst =
haftmann@36272
   637
      ensure_class thy algbr eqngr permissive class
haftmann@36272
   638
      ##>> ensure_tyco thy algbr eqngr permissive tyco
haftmann@36272
   639
      ##>> fold_map (translate_tyvar_sort thy algbr eqngr permissive) vs
haftmann@37384
   640
      ##>> fold_map translate_super_instance super_classes
haftmann@37384
   641
      ##>> fold_map translate_classparam_instance classparams
haftmann@37384
   642
      #>> (fn ((((class, tyco), arity_args), super_instances), classparam_instances) =>
haftmann@37384
   643
             Classinst ((class, (tyco, arity_args)), ((super_instances, []), classparam_instances)));
haftmann@28663
   644
  in ensure_stmt lookup_instance (declare_instance thy) stmt_inst (class, tyco) end
haftmann@36272
   645
and translate_typ thy algbr eqngr permissive (TFree (v, _)) =
haftmann@30932
   646
      pair (ITyVar (unprefix "'" v))
haftmann@36272
   647
  | translate_typ thy algbr eqngr permissive (Type (tyco, tys)) =
haftmann@36272
   648
      ensure_tyco thy algbr eqngr permissive tyco
haftmann@36272
   649
      ##>> fold_map (translate_typ thy algbr eqngr permissive) tys
haftmann@30932
   650
      #>> (fn (tyco, tys) => tyco `%% tys)
haftmann@36272
   651
and translate_term thy algbr eqngr permissive some_thm (Const (c, ty), some_abs) =
haftmann@36272
   652
      translate_app thy algbr eqngr permissive some_thm (((c, ty), []), some_abs)
haftmann@36272
   653
  | translate_term thy algbr eqngr permissive some_thm (Free (v, _), some_abs) =
haftmann@31889
   654
      pair (IVar (SOME v))
haftmann@36272
   655
  | translate_term thy algbr eqngr permissive some_thm (Abs (v, ty, t), some_abs) =
haftmann@24918
   656
      let
haftmann@32273
   657
        val (v', t') = Syntax.variant_abs (Name.desymbolize false v, ty, t);
haftmann@32273
   658
        val v'' = if member (op =) (Term.add_free_names t' []) v'
haftmann@32273
   659
          then SOME v' else NONE
haftmann@24918
   660
      in
haftmann@36272
   661
        translate_typ thy algbr eqngr permissive ty
haftmann@36272
   662
        ##>> translate_term thy algbr eqngr permissive some_thm (t', some_abs)
haftmann@32273
   663
        #>> (fn (ty, t) => (v'', ty) `|=> t)
haftmann@24918
   664
      end
haftmann@36272
   665
  | translate_term thy algbr eqngr permissive some_thm (t as _ $ _, some_abs) =
haftmann@24918
   666
      case strip_comb t
haftmann@24918
   667
       of (Const (c, ty), ts) =>
haftmann@36272
   668
            translate_app thy algbr eqngr permissive some_thm (((c, ty), ts), some_abs)
haftmann@24918
   669
        | (t', ts) =>
haftmann@36272
   670
            translate_term thy algbr eqngr permissive some_thm (t', some_abs)
haftmann@36272
   671
            ##>> fold_map (translate_term thy algbr eqngr permissive some_thm o rpair NONE) ts
haftmann@24918
   672
            #>> (fn (t, ts) => t `$$ ts)
haftmann@36272
   673
and translate_eqn thy algbr eqngr permissive ((args, (rhs, some_abs)), (some_thm, proper)) =
haftmann@36272
   674
  fold_map (translate_term thy algbr eqngr permissive some_thm) args
haftmann@36272
   675
  ##>> translate_term thy algbr eqngr permissive some_thm (rhs, some_abs)
haftmann@35226
   676
  #>> rpair (some_thm, proper)
haftmann@37440
   677
and translate_eqns thy algbr eqngr permissive eqns prgrm =
haftmann@37440
   678
  prgrm |> fold_map (translate_eqn thy algbr eqngr permissive) eqns
haftmann@37440
   679
    handle PERMISSIVE () => ([], prgrm)
haftmann@36272
   680
and translate_const thy algbr eqngr permissive some_thm ((c, ty), some_abs) =
haftmann@30932
   681
  let
haftmann@35226
   682
    val _ = if (case some_abs of NONE => true | SOME abs => not (c = abs))
haftmann@35226
   683
        andalso Code.is_abstr thy c
haftmann@36272
   684
        then translation_error thy permissive some_thm
haftmann@35226
   685
          "Abstraction violation" ("constant " ^ Code.string_of_const thy c)
haftmann@35226
   686
      else ()
haftmann@26972
   687
    val tys = Sign.const_typargs thy (c, ty);
haftmann@32873
   688
    val sorts = Code_Preproc.sortargs eqngr c;
haftmann@26972
   689
    val tys_args = (fst o Term.strip_type) ty;
haftmann@26972
   690
  in
haftmann@36272
   691
    ensure_const thy algbr eqngr permissive c
haftmann@36272
   692
    ##>> fold_map (translate_typ thy algbr eqngr permissive) tys
haftmann@36272
   693
    ##>> fold_map (translate_dicts thy algbr eqngr permissive some_thm) (tys ~~ sorts)
haftmann@36272
   694
    ##>> fold_map (translate_typ thy algbr eqngr permissive) tys_args
haftmann@31049
   695
    #>> (fn (((c, tys), iss), tys_args) => IConst (c, ((tys, iss), tys_args)))
haftmann@26972
   696
  end
haftmann@36272
   697
and translate_app_const thy algbr eqngr permissive some_thm ((c_ty, ts), some_abs) =
haftmann@36272
   698
  translate_const thy algbr eqngr permissive some_thm (c_ty, some_abs)
haftmann@36272
   699
  ##>> fold_map (translate_term thy algbr eqngr permissive some_thm o rpair NONE) ts
haftmann@24918
   700
  #>> (fn (t, ts) => t `$$ ts)
haftmann@36272
   701
and translate_case thy algbr eqngr permissive some_thm (num_args, (t_pos, case_pats)) (c_ty, ts) =
haftmann@24918
   702
  let
haftmann@31892
   703
    fun arg_types num_args ty = (fst o chop num_args o fst o strip_type) ty;
haftmann@31892
   704
    val tys = arg_types num_args (snd c_ty);
haftmann@29952
   705
    val ty = nth tys t_pos;
haftmann@31957
   706
    fun mk_constr c t = let val n = Code.args_number thy c
haftmann@31957
   707
      in ((c, arg_types n (fastype_of t) ---> ty), n) end;
haftmann@31892
   708
    val constrs = if null case_pats then []
haftmann@31892
   709
      else map2 mk_constr case_pats (nth_drop t_pos ts);
haftmann@31892
   710
    fun casify naming constrs ty ts =
haftmann@24918
   711
      let
haftmann@31935
   712
        val undefineds = map_filter (lookup_const naming) (Code.undefineds thy);
haftmann@31935
   713
        fun collapse_clause vs_map ts body =
haftmann@31935
   714
          let
haftmann@31935
   715
          in case body
haftmann@31935
   716
           of IConst (c, _) => if member (op =) undefineds c
haftmann@31935
   717
                then []
haftmann@31935
   718
                else [(ts, body)]
haftmann@31935
   719
            | ICase (((IVar (SOME v), _), subclauses), _) =>
haftmann@31935
   720
                if forall (fn (pat', body') => exists_var pat' v
haftmann@31935
   721
                  orelse not (exists_var body' v)) subclauses
haftmann@31935
   722
                then case AList.lookup (op =) vs_map v
haftmann@31935
   723
                 of SOME i => maps (fn (pat', body') =>
haftmann@31935
   724
                      collapse_clause (AList.delete (op =) v vs_map)
haftmann@31935
   725
                        (nth_map i (K pat') ts) body') subclauses
haftmann@31935
   726
                  | NONE => [(ts, body)]
haftmann@31935
   727
                else [(ts, body)]
haftmann@31935
   728
            | _ => [(ts, body)]
haftmann@31935
   729
          end;
haftmann@31935
   730
        fun mk_clause mk tys t =
haftmann@31935
   731
          let
haftmann@31935
   732
            val (vs, body) = unfold_abs_eta tys t;
haftmann@31935
   733
            val vs_map = fold_index (fn (i, (SOME v, _)) => cons (v, i) | _ => I) vs [];
haftmann@31935
   734
            val ts = map (IVar o fst) vs;
haftmann@31935
   735
          in map mk (collapse_clause vs_map ts body) end;
haftmann@31892
   736
        val t = nth ts t_pos;
haftmann@31892
   737
        val ts_clause = nth_drop t_pos ts;
haftmann@31935
   738
        val clauses = if null case_pats
haftmann@31935
   739
          then mk_clause (fn ([t], body) => (t, body)) [ty] (the_single ts_clause)
haftmann@31935
   740
          else maps (fn ((constr as IConst (_, (_, tys)), n), t) =>
haftmann@33957
   741
            mk_clause (fn (ts, body) => (constr `$$ ts, body)) (take n tys) t)
haftmann@31935
   742
              (constrs ~~ ts_clause);
haftmann@31892
   743
      in ((t, ty), clauses) end;
haftmann@24918
   744
  in
haftmann@36272
   745
    translate_const thy algbr eqngr permissive some_thm (c_ty, NONE)
haftmann@36272
   746
    ##>> fold_map (fn (constr, n) => translate_const thy algbr eqngr permissive some_thm (constr, NONE)
haftmann@36272
   747
      #>> rpair n) constrs
haftmann@36272
   748
    ##>> translate_typ thy algbr eqngr permissive ty
haftmann@36272
   749
    ##>> fold_map (translate_term thy algbr eqngr permissive some_thm o rpair NONE) ts
haftmann@31892
   750
    #-> (fn (((t, constrs), ty), ts) =>
haftmann@31892
   751
      `(fn (_, (naming, _)) => ICase (casify naming constrs ty ts, t `$$ ts)))
haftmann@24918
   752
  end
haftmann@36272
   753
and translate_app_case thy algbr eqngr permissive some_thm (case_scheme as (num_args, _)) ((c, ty), ts) =
haftmann@29973
   754
  if length ts < num_args then
haftmann@29973
   755
    let
haftmann@29973
   756
      val k = length ts;
haftmann@33957
   757
      val tys = (take (num_args - k) o drop k o fst o strip_type) ty;
haftmann@29973
   758
      val ctxt = (fold o fold_aterms) Term.declare_term_frees ts Name.context;
haftmann@29973
   759
      val vs = Name.names ctxt "a" tys;
haftmann@29973
   760
    in
haftmann@36272
   761
      fold_map (translate_typ thy algbr eqngr permissive) tys
haftmann@36272
   762
      ##>> translate_case thy algbr eqngr permissive some_thm case_scheme ((c, ty), ts @ map Free vs)
haftmann@31888
   763
      #>> (fn (tys, t) => map2 (fn (v, _) => pair (SOME v)) vs tys `|==> t)
haftmann@29973
   764
    end
haftmann@29973
   765
  else if length ts > num_args then
haftmann@36272
   766
    translate_case thy algbr eqngr permissive some_thm case_scheme ((c, ty), take num_args ts)
haftmann@36272
   767
    ##>> fold_map (translate_term thy algbr eqngr permissive some_thm o rpair NONE) (drop num_args ts)
haftmann@29973
   768
    #>> (fn (t, ts) => t `$$ ts)
haftmann@29973
   769
  else
haftmann@36272
   770
    translate_case thy algbr eqngr permissive some_thm case_scheme ((c, ty), ts)
haftmann@36272
   771
and translate_app thy algbr eqngr permissive some_thm (c_ty_ts as ((c, _), _), some_abs) =
haftmann@29973
   772
  case Code.get_case_scheme thy c
haftmann@36272
   773
   of SOME case_scheme => translate_app_case thy algbr eqngr permissive some_thm case_scheme c_ty_ts
haftmann@36272
   774
    | NONE => translate_app_const thy algbr eqngr permissive some_thm (c_ty_ts, some_abs)
haftmann@36272
   775
and translate_tyvar_sort thy (algbr as (proj_sort, _)) eqngr permissive (v, sort) =
haftmann@36272
   776
  fold_map (ensure_class thy algbr eqngr permissive) (proj_sort sort)
haftmann@30932
   777
  #>> (fn sort => (unprefix "'" v, sort))
haftmann@36272
   778
and translate_dicts thy (algbr as (proj_sort, algebra)) eqngr permissive some_thm (ty, sort) =
haftmann@30932
   779
  let
haftmann@30932
   780
    datatype typarg =
haftmann@30932
   781
        Global of (class * string) * typarg list list
haftmann@30932
   782
      | Local of (class * class) list * (string * (int * sort));
haftmann@30932
   783
    fun class_relation (Global ((_, tyco), yss), _) class =
haftmann@30932
   784
          Global ((class, tyco), yss)
haftmann@37384
   785
      | class_relation (Local (classrels, v), sub_class) super_class =
haftmann@37384
   786
          Local ((sub_class, super_class) :: classrels, v);
wenzelm@36102
   787
    fun type_constructor (tyco, _) yss class =
haftmann@30932
   788
      Global ((class, tyco), (map o map) fst yss);
haftmann@30932
   789
    fun type_variable (TFree (v, sort)) =
haftmann@30932
   790
      let
haftmann@30932
   791
        val sort' = proj_sort sort;
haftmann@30932
   792
      in map_index (fn (n, class) => (Local ([], (v, (n, sort'))), class)) sort' end;
wenzelm@32795
   793
    val typargs = Sorts.of_sort_derivation algebra
wenzelm@36102
   794
      {class_relation = K (Sorts.classrel_derivation algebra class_relation),
wenzelm@35961
   795
       type_constructor = type_constructor,
haftmann@30932
   796
       type_variable = type_variable} (ty, proj_sort sort)
haftmann@36272
   797
      handle Sorts.CLASS_ERROR e => not_wellsorted thy permissive some_thm ty sort e;
haftmann@30932
   798
    fun mk_dict (Global (inst, yss)) =
haftmann@36272
   799
          ensure_inst thy algbr eqngr permissive inst
haftmann@30932
   800
          ##>> (fold_map o fold_map) mk_dict yss
haftmann@30932
   801
          #>> (fn (inst, dss) => DictConst (inst, dss))
haftmann@31962
   802
      | mk_dict (Local (classrels, (v, (n, sort)))) =
haftmann@36272
   803
          fold_map (ensure_classrel thy algbr eqngr permissive) classrels
haftmann@31962
   804
          #>> (fn classrels => DictVar (classrels, (unprefix "'" v, (n, length sort))))
haftmann@30932
   805
  in fold_map mk_dict typargs end;
haftmann@24918
   806
haftmann@25969
   807
haftmann@27103
   808
(* store *)
haftmann@27103
   809
haftmann@34173
   810
structure Program = Code_Data
haftmann@27103
   811
(
haftmann@28663
   812
  type T = naming * program;
haftmann@28663
   813
  val empty = (empty_naming, Graph.empty);
haftmann@27103
   814
);
haftmann@27103
   815
haftmann@36272
   816
fun cache_generation thy (algebra, eqngr) f name =
haftmann@34251
   817
  Program.change_yield thy (fn naming_program => (NONE, naming_program)
haftmann@32873
   818
    |> f thy algebra eqngr name
haftmann@28663
   819
    |-> (fn name => fn (_, naming_program) => (name, naming_program)));
haftmann@27103
   820
haftmann@36272
   821
fun transient_generation thy (algebra, eqngr) f name =
haftmann@36272
   822
  (NONE, (empty_naming, Graph.empty))
haftmann@36272
   823
  |> f thy algebra eqngr name
haftmann@36272
   824
  |-> (fn name => fn (_, naming_program) => (name, naming_program));
haftmann@36272
   825
haftmann@27103
   826
haftmann@27103
   827
(* program generation *)
haftmann@27103
   828
haftmann@36272
   829
fun consts_program thy permissive cs =
haftmann@27103
   830
  let
haftmann@28663
   831
    fun project_consts cs (naming, program) =
haftmann@27103
   832
      let
haftmann@27103
   833
        val cs_all = Graph.all_succs program cs;
haftmann@28663
   834
      in (cs, (naming, Graph.subgraph (member (op =) cs_all) program)) end;
haftmann@32873
   835
    fun generate_consts thy algebra eqngr =
haftmann@36272
   836
      fold_map (ensure_const thy algebra eqngr permissive);
haftmann@36272
   837
    val invoke_generation = if permissive
haftmann@36272
   838
      then transient_generation else cache_generation
haftmann@27103
   839
  in
haftmann@31125
   840
    invoke_generation thy (Code_Preproc.obtain thy cs []) generate_consts cs
haftmann@27103
   841
    |-> project_consts
haftmann@27103
   842
  end;
haftmann@27103
   843
haftmann@27103
   844
haftmann@27103
   845
(* value evaluation *)
haftmann@25969
   846
haftmann@32873
   847
fun ensure_value thy algbr eqngr t =
haftmann@24918
   848
  let
haftmann@24918
   849
    val ty = fastype_of t;
haftmann@24918
   850
    val vs = fold_term_types (K (fold_atyps (insert (eq_fst op =)
haftmann@24918
   851
      o dest_TFree))) t [];
haftmann@24918
   852
    val stmt_value =
haftmann@36272
   853
      fold_map (translate_tyvar_sort thy algbr eqngr false) vs
haftmann@36272
   854
      ##>> translate_typ thy algbr eqngr false ty
haftmann@36272
   855
      ##>> translate_term thy algbr eqngr false NONE (Code.subst_signatures thy t, NONE)
haftmann@28663
   856
      #>> (fn ((vs, ty), t) => Fun
haftmann@37437
   857
        (Term.dummy_patternN, (((vs, ty), [(([], t), (NONE, true))]), NONE)));
haftmann@31063
   858
    fun term_value (dep, (naming, program1)) =
haftmann@25969
   859
      let
haftmann@37437
   860
        val Fun (_, ((vs_ty, [(([], t), _)]), _)) =
haftmann@28663
   861
          Graph.get_node program1 Term.dummy_patternN;
haftmann@28663
   862
        val deps = Graph.imm_succs program1 Term.dummy_patternN;
haftmann@28663
   863
        val program2 = Graph.del_nodes [Term.dummy_patternN] program1;
haftmann@27103
   864
        val deps_all = Graph.all_succs program2 deps;
haftmann@27103
   865
        val program3 = Graph.subgraph (member (op =) deps_all) program2;
haftmann@31063
   866
      in (((naming, program3), ((vs_ty, t), deps)), (dep, (naming, program2))) end;
haftmann@26011
   867
  in
haftmann@28663
   868
    ensure_stmt ((K o K) NONE) pair stmt_value Term.dummy_patternN
haftmann@26011
   869
    #> snd
haftmann@31063
   870
    #> term_value
haftmann@26011
   871
  end;
haftmann@24219
   872
haftmann@32873
   873
fun base_evaluator thy evaluator algebra eqngr vs t =
haftmann@30942
   874
  let
haftmann@31063
   875
    val (((naming, program), (((vs', ty'), t'), deps)), _) =
haftmann@36272
   876
      cache_generation thy (algebra, eqngr) ensure_value t;
haftmann@30947
   877
    val vs'' = map (fn (v, _) => (v, (the o AList.lookup (op =) vs o prefix "'") v)) vs';
haftmann@31063
   878
  in evaluator naming program ((vs'', (vs', ty')), t') deps end;
haftmann@30942
   879
haftmann@32123
   880
fun eval_conv thy = Code_Preproc.eval_conv thy o base_evaluator thy;
haftmann@32123
   881
fun eval thy postproc = Code_Preproc.eval thy postproc o base_evaluator thy;
haftmann@30942
   882
haftmann@30942
   883
haftmann@30942
   884
(** diagnostic commands **)
haftmann@30942
   885
haftmann@31036
   886
fun read_const_exprs thy =
haftmann@31036
   887
  let
haftmann@36272
   888
    fun consts_of thy' = Symtab.fold (fn (c, (_, NONE)) => cons c | _ => I)
haftmann@36272
   889
      ((snd o #constants o Consts.dest o #consts o Sign.rep_sg) thy') [];
haftmann@36272
   890
    fun belongs_here thy' c = forall
haftmann@36272
   891
      (fn thy'' => not (Sign.declared_const thy'' c)) (Theory.parents_of thy');
haftmann@36272
   892
    fun consts_of_select thy' = filter (belongs_here thy') (consts_of thy');
haftmann@36272
   893
    fun read_const_expr "*" = ([], consts_of thy)
haftmann@31036
   894
      | read_const_expr s = if String.isSuffix ".*" s
wenzelm@37216
   895
          then ([], consts_of_select (Thy_Info.the_theory (unsuffix ".*" s) thy))
haftmann@31156
   896
          else ([Code.read_const thy s], []);
haftmann@31036
   897
  in pairself flat o split_list o map read_const_expr end;
haftmann@31036
   898
haftmann@30942
   899
fun code_depgr thy consts =
haftmann@30942
   900
  let
haftmann@31125
   901
    val (_, eqngr) = Code_Preproc.obtain thy consts [];
haftmann@34173
   902
    val all_consts = Graph.all_succs eqngr consts;
haftmann@34891
   903
  in Graph.subgraph (member (op =) all_consts) eqngr end;
haftmann@30942
   904
haftmann@31125
   905
fun code_thms thy = Pretty.writeln o Code_Preproc.pretty thy o code_depgr thy;
haftmann@30942
   906
haftmann@30942
   907
fun code_deps thy consts =
haftmann@27103
   908
  let
haftmann@30942
   909
    val eqngr = code_depgr thy consts;
haftmann@30942
   910
    val constss = Graph.strong_conn eqngr;
haftmann@30942
   911
    val mapping = Symtab.empty |> fold (fn consts => fold (fn const =>
haftmann@30942
   912
      Symtab.update (const, consts)) consts) constss;
haftmann@30942
   913
    fun succs consts = consts
haftmann@30942
   914
      |> maps (Graph.imm_succs eqngr)
haftmann@30942
   915
      |> subtract (op =) consts
haftmann@30942
   916
      |> map (the o Symtab.lookup mapping)
haftmann@30942
   917
      |> distinct (op =);
haftmann@30942
   918
    val conn = [] |> fold (fn consts => cons (consts, succs consts)) constss;
haftmann@31156
   919
    fun namify consts = map (Code.string_of_const thy) consts
haftmann@30942
   920
      |> commas;
haftmann@30942
   921
    val prgr = map (fn (consts, constss) =>
haftmann@30942
   922
      { name = namify consts, ID = namify consts, dir = "", unfold = true,
haftmann@30942
   923
        path = "", parents = map namify constss }) conn;
haftmann@30942
   924
  in Present.display_graph prgr end;
haftmann@30942
   925
haftmann@30942
   926
local
haftmann@27103
   927
haftmann@31036
   928
fun code_thms_cmd thy = code_thms thy o op @ o read_const_exprs thy;
haftmann@31036
   929
fun code_deps_cmd thy = code_deps thy o op @ o read_const_exprs thy;
haftmann@30942
   930
haftmann@30942
   931
in
haftmann@30942
   932
haftmann@30942
   933
val _ =
wenzelm@36960
   934
  Outer_Syntax.improper_command "code_thms" "print system of code equations for code" Keyword.diag
wenzelm@36960
   935
    (Scan.repeat1 Parse.term_group
haftmann@30942
   936
      >> (fn cs => Toplevel.no_timing o Toplevel.unknown_theory
haftmann@30942
   937
        o Toplevel.keep ((fn thy => code_thms_cmd thy cs) o Toplevel.theory_of)));
haftmann@30942
   938
haftmann@30942
   939
val _ =
wenzelm@36960
   940
  Outer_Syntax.improper_command "code_deps" "visualize dependencies of code equations for code"
wenzelm@36960
   941
    Keyword.diag
wenzelm@36960
   942
    (Scan.repeat1 Parse.term_group
haftmann@30942
   943
      >> (fn cs => Toplevel.no_timing o Toplevel.unknown_theory
haftmann@30942
   944
        o Toplevel.keep ((fn thy => code_deps_cmd thy cs) o Toplevel.theory_of)));
haftmann@30942
   945
haftmann@30942
   946
end;
haftmann@27103
   947
haftmann@24219
   948
end; (*struct*)
haftmann@24219
   949
haftmann@24219
   950
haftmann@28054
   951
structure Basic_Code_Thingol: BASIC_CODE_THINGOL = Code_Thingol;