(* Title: Tools/code/code_ml.ML
ID: $Id$
Author: Florian Haftmann, TU Muenchen
Serializer for SML and OCaml.
*)
signature CODE_ML =
sig
val eval_conv: string * (unit -> thm) option ref
-> theory -> cterm -> string list -> thm;
val eval_term: string * (unit -> 'a) option ref
-> theory -> term -> string list -> 'a;
val setup: theory -> theory
end;
structure Code_ML : CODE_ML =
struct
open Basic_Code_Thingol;
open Code_Printer;
infixr 5 @@;
infixr 5 @|;
val target_SML = "SML";
val target_OCaml = "OCaml";
datatype ml_stmt =
MLFuns of (string * (typscheme * ((iterm list * iterm) * (thm * bool)) list)) list
| MLDatas of (string * ((vname * sort) list * (string * itype list) list)) list
| MLClass of string * (vname * ((class * string) list * (string * itype) list))
| MLClassinst of string * ((class * (string * (vname * sort) list))
* ((class * (string * (string * dict list list))) list
* ((string * const) * (thm * bool)) list));
fun stmt_names_of (MLFuns fs) = map fst fs
| stmt_names_of (MLDatas ds) = map fst ds
| stmt_names_of (MLClass (c, _)) = [c]
| stmt_names_of (MLClassinst (i, _)) = [i];
(** SML serailizer **)
fun pr_sml_stmt syntax_tyco syntax_const labelled_name reserved_names deresolve is_cons =
let
val pr_label_classrel = translate_string (fn "." => "__" | c => c)
o NameSpace.qualifier;
val pr_label_classparam = NameSpace.base o NameSpace.qualifier;
fun pr_dicts fxy ds =
let
fun pr_dictvar (v, (_, 1)) = first_upper v ^ "_"
| pr_dictvar (v, (i, _)) = first_upper v ^ string_of_int (i+1) ^ "_";
fun pr_proj [] p =
p
| pr_proj [p'] p =
brackets [p', p]
| pr_proj (ps as _ :: _) p =
brackets [Pretty.enum " o" "(" ")" ps, p];
fun pr_dict fxy (DictConst (inst, dss)) =
brackify fxy ((str o deresolve) inst :: map (pr_dicts BR) dss)
| pr_dict fxy (DictVar (classrels, v)) =
pr_proj (map (str o deresolve) classrels) ((str o pr_dictvar) v)
in case ds
of [] => str "()"
| [d] => pr_dict fxy d
| _ :: _ => (Pretty.list "(" ")" o map (pr_dict NOBR)) ds
end;
fun pr_tyvar_dicts vs =
vs
|> map (fn (v, sort) => map_index (fn (i, _) =>
DictVar ([], (v, (i, length sort)))) sort)
|> map (pr_dicts BR);
fun pr_tycoexpr fxy (tyco, tys) =
let
val tyco' = (str o deresolve) tyco
in case map (pr_typ BR) tys
of [] => tyco'
| [p] => Pretty.block [p, Pretty.brk 1, tyco']
| (ps as _::_) => Pretty.block [Pretty.list "(" ")" ps, Pretty.brk 1, tyco']
end
and pr_typ fxy (tyco `%% tys) = (case syntax_tyco tyco
of NONE => pr_tycoexpr fxy (tyco, tys)
| SOME (i, pr) => pr pr_typ fxy tys)
| pr_typ fxy (ITyVar v) = str ("'" ^ v);
fun pr_term thm pat vars fxy (IConst c) =
pr_app thm pat vars fxy (c, [])
| pr_term thm pat vars fxy (IVar v) =
str (lookup_var vars v)
| pr_term thm pat vars fxy (t as t1 `$ t2) =
(case Code_Thingol.unfold_const_app t
of SOME c_ts => pr_app thm pat vars fxy c_ts
| NONE =>
brackify fxy [pr_term thm pat vars NOBR t1, pr_term thm pat vars BR t2])
| pr_term thm pat vars fxy (t as _ `|-> _) =
let
val (binds, t') = Code_Thingol.unfold_abs t;
fun pr ((v, pat), ty) =
pr_bind thm NOBR ((SOME v, pat), ty)
#>> (fn p => concat [str "fn", p, str "=>"]);
val (ps, vars') = fold_map pr binds vars;
in brackets (ps @ [pr_term thm pat vars' NOBR t']) end
| pr_term thm pat vars fxy (ICase (cases as (_, t0))) =
(case Code_Thingol.unfold_const_app t0
of SOME (c_ts as ((c, _), _)) => if is_none (syntax_const c)
then pr_case thm vars fxy cases
else pr_app thm pat vars fxy c_ts
| NONE => pr_case thm vars fxy cases)
and pr_app' thm pat vars (app as ((c, (iss, tys)), ts)) =
if is_cons c then let
val k = length tys
in if k < 2 then
(str o deresolve) c :: map (pr_term thm pat vars BR) ts
else if k = length ts then
[(str o deresolve) c, Pretty.enum "," "(" ")" (map (pr_term thm pat vars NOBR) ts)]
else [pr_term thm pat vars BR (Code_Thingol.eta_expand k app)] end else
(str o deresolve) c
:: (map (pr_dicts BR) o filter_out null) iss @ map (pr_term thm pat vars BR) ts
and pr_app thm pat vars = gen_pr_app pr_app' pr_term syntax_const is_cons thm pat vars
and pr_bind' ((NONE, NONE), _) = str "_"
| pr_bind' ((SOME v, NONE), _) = str v
| pr_bind' ((NONE, SOME p), _) = p
| pr_bind' ((SOME v, SOME p), _) = concat [str v, str "as", p]
and pr_bind thm = gen_pr_bind pr_bind' pr_term thm
and pr_case thm vars fxy (cases as ((_, [_]), _)) =
let
val (binds, t') = Code_Thingol.unfold_let (ICase cases);
fun pr ((pat, ty), t) vars =
vars
|> pr_bind thm NOBR ((NONE, SOME pat), ty)
|>> (fn p => semicolon [str "val", p, str "=", pr_term thm false vars NOBR t])
val (ps, vars') = fold_map pr binds vars;
in
Pretty.chunks [
[str ("let"), Pretty.fbrk, Pretty.chunks ps] |> Pretty.block,
[str ("in"), Pretty.fbrk, pr_term thm false vars' NOBR t'] |> Pretty.block,
str ("end")
]
end
| pr_case thm vars fxy (((td, ty), b::bs), _) =
let
fun pr delim (pat, t) =
let
val (p, vars') = pr_bind thm NOBR ((NONE, SOME pat), ty) vars;
in
concat [str delim, p, str "=>", pr_term thm false vars' NOBR t]
end;
in
(Pretty.enclose "(" ")" o single o brackify fxy) (
str "case"
:: pr_term thm false vars NOBR td
:: pr "of" b
:: map (pr "|") bs
)
end
| pr_case thm vars fxy ((_, []), _) = str "raise Fail \"empty case\"";
fun pr_stmt (MLFuns (funns as (funn :: funns'))) =
let
val definer =
let
fun no_args _ (((ts, _), _) :: _) = length ts
| no_args ty [] = (length o fst o Code_Thingol.unfold_fun) ty;
fun mk 0 [] = "val"
| mk 0 vs = if (null o filter_out (null o snd)) vs
then "val" else "fun"
| mk k _ = "fun";
fun chk (_, ((vs, ty), eqs)) NONE = SOME (mk (no_args ty eqs) vs)
| chk (_, ((vs, ty), eqs)) (SOME defi) =
if defi = mk (no_args ty eqs) vs then SOME defi
else error ("Mixing simultaneous vals and funs not implemented: "
^ commas (map (labelled_name o fst) funns));
in the (fold chk funns NONE) end;
fun pr_funn definer (name, ((vs, ty), [])) =
let
val vs_dict = filter_out (null o snd) vs;
val n = length vs_dict + (length o fst o Code_Thingol.unfold_fun) ty;
val exc_str =
(ML_Syntax.print_string o NameSpace.base o NameSpace.qualifier) name;
in
concat (
str definer
:: (str o deresolve) name
:: map str (replicate n "_")
@ str "="
:: str "raise"
:: str "(Fail"
@@ str (exc_str ^ ")")
)
end
| pr_funn definer (name, ((vs, ty), eqs as eq :: eqs')) =
let
val vs_dict = filter_out (null o snd) vs;
val shift = if null eqs' then I else
map (Pretty.block o single o Pretty.block o single);
fun pr_eq definer ((ts, t), (thm, _)) =
let
val consts = map_filter
(fn c => if (is_some o syntax_const) c
then NONE else (SOME o NameSpace.base o deresolve) c)
((fold o Code_Thingol.fold_constnames) (insert (op =)) (t :: ts) []);
val vars = reserved_names
|> intro_vars consts
|> intro_vars ((fold o Code_Thingol.fold_unbound_varnames)
(insert (op =)) ts []);
in
concat (
[str definer, (str o deresolve) name]
@ (if null ts andalso null vs_dict
then [str ":", pr_typ NOBR ty]
else
pr_tyvar_dicts vs_dict
@ map (pr_term thm true vars BR) ts)
@ [str "=", pr_term thm false vars NOBR t]
)
end
in
(Pretty.block o Pretty.fbreaks o shift) (
pr_eq definer eq
:: map (pr_eq "|") eqs'
)
end;
val (ps, p) = split_last (pr_funn definer funn :: map (pr_funn "and") funns');
in Pretty.chunks (ps @ [Pretty.block ([p, str ";"])]) end
| pr_stmt (MLDatas (datas as (data :: datas'))) =
let
fun pr_co (co, []) =
str (deresolve co)
| pr_co (co, tys) =
concat [
str (deresolve co),
str "of",
Pretty.enum " *" "" "" (map (pr_typ (INFX (2, X))) tys)
];
fun pr_data definer (tyco, (vs, [])) =
concat (
str definer
:: pr_tycoexpr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
@@ str "EMPTY__"
)
| pr_data definer (tyco, (vs, cos)) =
concat (
str definer
:: pr_tycoexpr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
:: separate (str "|") (map pr_co cos)
);
val (ps, p) = split_last
(pr_data "datatype" data :: map (pr_data "and") datas');
in Pretty.chunks (ps @ [Pretty.block ([p, str ";"])]) end
| pr_stmt (MLClass (class, (v, (superclasses, classparams)))) =
let
val w = first_upper v ^ "_";
fun pr_superclass_field (class, classrel) =
(concat o map str) [
pr_label_classrel classrel, ":", "'" ^ v, deresolve class
];
fun pr_classparam_field (classparam, ty) =
concat [
(str o pr_label_classparam) classparam, str ":", pr_typ NOBR ty
];
fun pr_classparam_proj (classparam, _) =
semicolon [
str "fun",
(str o deresolve) classparam,
Pretty.enclose "(" ")" [str (w ^ ":'" ^ v ^ " " ^ deresolve class)],
str "=",
str ("#" ^ pr_label_classparam classparam),
str w
];
fun pr_superclass_proj (_, classrel) =
semicolon [
str "fun",
(str o deresolve) classrel,
Pretty.enclose "(" ")" [str (w ^ ":'" ^ v ^ " " ^ deresolve class)],
str "=",
str ("#" ^ pr_label_classrel classrel),
str w
];
in
Pretty.chunks (
concat [
str ("type '" ^ v),
(str o deresolve) class,
str "=",
Pretty.enum "," "{" "};" (
map pr_superclass_field superclasses @ map pr_classparam_field classparams
)
]
:: map pr_superclass_proj superclasses
@ map pr_classparam_proj classparams
)
end
| pr_stmt (MLClassinst (inst, ((class, (tyco, arity)), (superarities, classparam_insts)))) =
let
fun pr_superclass (_, (classrel, dss)) =
concat [
(str o pr_label_classrel) classrel,
str "=",
pr_dicts NOBR [DictConst dss]
];
fun pr_classparam ((classparam, c_inst), (thm, _)) =
concat [
(str o pr_label_classparam) classparam,
str "=",
pr_app thm false reserved_names NOBR (c_inst, [])
];
in
semicolon ([
str (if null arity then "val" else "fun"),
(str o deresolve) inst ] @
pr_tyvar_dicts arity @ [
str "=",
Pretty.enum "," "{" "}"
(map pr_superclass superarities @ map pr_classparam classparam_insts),
str ":",
pr_tycoexpr NOBR (class, [tyco `%% map (ITyVar o fst) arity])
])
end;
in pr_stmt end;
fun pr_sml_module name content =
Pretty.chunks (
str ("structure " ^ name ^ " = ")
:: str "struct"
:: str ""
:: content
@ str ""
@@ str ("end; (*struct " ^ name ^ "*)")
);
val literals_sml = Literals {
literal_char = prefix "#" o quote o ML_Syntax.print_char,
literal_string = quote o translate_string ML_Syntax.print_char,
literal_numeral = fn unbounded => fn k =>
if unbounded then "(" ^ string_of_int k ^ " : IntInf.int)"
else string_of_int k,
literal_list = Pretty.enum "," "[" "]",
infix_cons = (7, "::")
};
(** OCaml serializer **)
fun pr_ocaml_stmt syntax_tyco syntax_const labelled_name reserved_names deresolve is_cons =
let
fun pr_dicts fxy ds =
let
fun pr_dictvar (v, (_, 1)) = "_" ^ first_upper v
| pr_dictvar (v, (i, _)) = "_" ^ first_upper v ^ string_of_int (i+1);
fun pr_proj ps p =
fold_rev (fn p2 => fn p1 => Pretty.block [p1, str ".", str p2]) ps p
fun pr_dict fxy (DictConst (inst, dss)) =
brackify fxy ((str o deresolve) inst :: map (pr_dicts BR) dss)
| pr_dict fxy (DictVar (classrels, v)) =
pr_proj (map deresolve classrels) ((str o pr_dictvar) v)
in case ds
of [] => str "()"
| [d] => pr_dict fxy d
| _ :: _ => (Pretty.list "(" ")" o map (pr_dict NOBR)) ds
end;
fun pr_tyvar_dicts vs =
vs
|> map (fn (v, sort) => map_index (fn (i, _) =>
DictVar ([], (v, (i, length sort)))) sort)
|> map (pr_dicts BR);
fun pr_tycoexpr fxy (tyco, tys) =
let
val tyco' = (str o deresolve) tyco
in case map (pr_typ BR) tys
of [] => tyco'
| [p] => Pretty.block [p, Pretty.brk 1, tyco']
| (ps as _::_) => Pretty.block [Pretty.list "(" ")" ps, Pretty.brk 1, tyco']
end
and pr_typ fxy (tyco `%% tys) = (case syntax_tyco tyco
of NONE => pr_tycoexpr fxy (tyco, tys)
| SOME (i, pr) => pr pr_typ fxy tys)
| pr_typ fxy (ITyVar v) = str ("'" ^ v);
fun pr_term thm pat vars fxy (IConst c) =
pr_app thm pat vars fxy (c, [])
| pr_term thm pat vars fxy (IVar v) =
str (lookup_var vars v)
| pr_term thm pat vars fxy (t as t1 `$ t2) =
(case Code_Thingol.unfold_const_app t
of SOME c_ts => pr_app thm pat vars fxy c_ts
| NONE =>
brackify fxy [pr_term thm pat vars NOBR t1, pr_term thm pat vars BR t2])
| pr_term thm pat vars fxy (t as _ `|-> _) =
let
val (binds, t') = Code_Thingol.unfold_abs t;
fun pr ((v, pat), ty) = pr_bind thm BR ((SOME v, pat), ty);
val (ps, vars') = fold_map pr binds vars;
in brackets (str "fun" :: ps @ str "->" @@ pr_term thm pat vars' NOBR t') end
| pr_term thm pat vars fxy (ICase (cases as (_, t0))) = (case Code_Thingol.unfold_const_app t0
of SOME (c_ts as ((c, _), _)) => if is_none (syntax_const c)
then pr_case thm vars fxy cases
else pr_app thm pat vars fxy c_ts
| NONE => pr_case thm vars fxy cases)
and pr_app' thm pat vars (app as ((c, (iss, tys)), ts)) =
if is_cons c then
if length tys = length ts
then case ts
of [] => [(str o deresolve) c]
| [t] => [(str o deresolve) c, pr_term thm pat vars BR t]
| _ => [(str o deresolve) c, Pretty.enum "," "(" ")"
(map (pr_term thm pat vars NOBR) ts)]
else [pr_term thm pat vars BR (Code_Thingol.eta_expand (length tys) app)]
else (str o deresolve) c
:: ((map (pr_dicts BR) o filter_out null) iss @ map (pr_term thm pat vars BR) ts)
and pr_app thm pat vars = gen_pr_app pr_app' pr_term syntax_const is_cons thm pat vars
and pr_bind' ((NONE, NONE), _) = str "_"
| pr_bind' ((SOME v, NONE), _) = str v
| pr_bind' ((NONE, SOME p), _) = p
| pr_bind' ((SOME v, SOME p), _) = brackets [p, str "as", str v]
and pr_bind thm = gen_pr_bind pr_bind' pr_term thm
and pr_case thm vars fxy (cases as ((_, [_]), _)) =
let
val (binds, t') = Code_Thingol.unfold_let (ICase cases);
fun pr ((pat, ty), t) vars =
vars
|> pr_bind thm NOBR ((NONE, SOME pat), ty)
|>> (fn p => concat
[str "let", p, str "=", pr_term thm false vars NOBR t, str "in"])
val (ps, vars') = fold_map pr binds vars;
in Pretty.chunks (ps @| pr_term thm false vars' NOBR t') end
| pr_case thm vars fxy (((td, ty), b::bs), _) =
let
fun pr delim (pat, t) =
let
val (p, vars') = pr_bind thm NOBR ((NONE, SOME pat), ty) vars;
in concat [str delim, p, str "->", pr_term thm false vars' NOBR t] end;
in
(Pretty.enclose "(" ")" o single o brackify fxy) (
str "match"
:: pr_term thm false vars NOBR td
:: pr "with" b
:: map (pr "|") bs
)
end
| pr_case thm vars fxy ((_, []), _) = str "failwith \"empty case\"";
fun fish_params vars eqs =
let
fun fish_param _ (w as SOME _) = w
| fish_param (IVar v) NONE = SOME v
| fish_param _ NONE = NONE;
fun fillup_param _ (_, SOME v) = v
| fillup_param x (i, NONE) = x ^ string_of_int i;
val fished1 = fold (map2 fish_param) eqs (replicate (length (hd eqs)) NONE);
val x = Name.variant (map_filter I fished1) "x";
val fished2 = map_index (fillup_param x) fished1;
val (fished3, _) = Name.variants fished2 Name.context;
val vars' = intro_vars fished3 vars;
in map (lookup_var vars') fished3 end;
fun pr_stmt (MLFuns (funns as funn :: funns')) =
let
fun pr_eq ((ts, t), (thm, _)) =
let
val consts = map_filter
(fn c => if (is_some o syntax_const) c
then NONE else (SOME o NameSpace.base o deresolve) c)
((fold o Code_Thingol.fold_constnames) (insert (op =)) (t :: ts) []);
val vars = reserved_names
|> intro_vars consts
|> intro_vars ((fold o Code_Thingol.fold_unbound_varnames)
(insert (op =)) ts []);
in concat [
(Pretty.block o Pretty.commas) (map (pr_term thm true vars NOBR) ts),
str "->",
pr_term thm false vars NOBR t
] end;
fun pr_eqs name ty [] =
let
val n = (length o fst o Code_Thingol.unfold_fun) ty;
val exc_str =
(ML_Syntax.print_string o NameSpace.base o NameSpace.qualifier) name;
in
concat (
map str (replicate n "_")
@ str "="
:: str "failwith"
@@ str exc_str
)
end
| pr_eqs _ _ [((ts, t), (thm, _))] =
let
val consts = map_filter
(fn c => if (is_some o syntax_const) c
then NONE else (SOME o NameSpace.base o deresolve) c)
((fold o Code_Thingol.fold_constnames) (insert (op =)) (t :: ts) []);
val vars = reserved_names
|> intro_vars consts
|> intro_vars ((fold o Code_Thingol.fold_unbound_varnames)
(insert (op =)) ts []);
in
concat (
map (pr_term thm true vars BR) ts
@ str "="
@@ pr_term thm false vars NOBR t
)
end
| pr_eqs _ _ (eqs as (eq as (([_], _), _)) :: eqs') =
Pretty.block (
str "="
:: Pretty.brk 1
:: str "function"
:: Pretty.brk 1
:: pr_eq eq
:: maps (append [Pretty.fbrk, str "|", Pretty.brk 1]
o single o pr_eq) eqs'
)
| pr_eqs _ _ (eqs as eq :: eqs') =
let
val consts = map_filter
(fn c => if (is_some o syntax_const) c
then NONE else (SOME o NameSpace.base o deresolve) c)
((fold o Code_Thingol.fold_constnames)
(insert (op =)) (map (snd o fst) eqs) []);
val vars = reserved_names
|> intro_vars consts;
val dummy_parms = (map str o fish_params vars o map (fst o fst)) eqs;
in
Pretty.block (
Pretty.breaks dummy_parms
@ Pretty.brk 1
:: str "="
:: Pretty.brk 1
:: str "match"
:: Pretty.brk 1
:: (Pretty.block o Pretty.commas) dummy_parms
:: Pretty.brk 1
:: str "with"
:: Pretty.brk 1
:: pr_eq eq
:: maps (append [Pretty.fbrk, str "|", Pretty.brk 1]
o single o pr_eq) eqs'
)
end;
fun pr_funn definer (name, ((vs, ty), eqs)) =
concat (
str definer
:: (str o deresolve) name
:: pr_tyvar_dicts (filter_out (null o snd) vs)
@| pr_eqs name ty eqs
);
val (ps, p) = split_last
(pr_funn "let rec" funn :: map (pr_funn "and") funns');
in Pretty.chunks (ps @ [Pretty.block ([p, str ";;"])]) end
| pr_stmt (MLDatas (datas as (data :: datas'))) =
let
fun pr_co (co, []) =
str (deresolve co)
| pr_co (co, tys) =
concat [
str (deresolve co),
str "of",
Pretty.enum " *" "" "" (map (pr_typ (INFX (2, X))) tys)
];
fun pr_data definer (tyco, (vs, [])) =
concat (
str definer
:: pr_tycoexpr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
@@ str "EMPTY_"
)
| pr_data definer (tyco, (vs, cos)) =
concat (
str definer
:: pr_tycoexpr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
:: separate (str "|") (map pr_co cos)
);
val (ps, p) = split_last
(pr_data "type" data :: map (pr_data "and") datas');
in Pretty.chunks (ps @ [Pretty.block ([p, str ";;"])]) end
| pr_stmt (MLClass (class, (v, (superclasses, classparams)))) =
let
val w = "_" ^ first_upper v;
fun pr_superclass_field (class, classrel) =
(concat o map str) [
deresolve classrel, ":", "'" ^ v, deresolve class
];
fun pr_classparam_field (classparam, ty) =
concat [
(str o deresolve) classparam, str ":", pr_typ NOBR ty
];
fun pr_classparam_proj (classparam, _) =
concat [
str "let",
(str o deresolve) classparam,
str w,
str "=",
str (w ^ "." ^ deresolve classparam ^ ";;")
];
in Pretty.chunks (
concat [
str ("type '" ^ v),
(str o deresolve) class,
str "=",
enum_default "();;" ";" "{" "};;" (
map pr_superclass_field superclasses
@ map pr_classparam_field classparams
)
]
:: map pr_classparam_proj classparams
) end
| pr_stmt (MLClassinst (inst, ((class, (tyco, arity)), (superarities, classparam_insts)))) =
let
fun pr_superclass (_, (classrel, dss)) =
concat [
(str o deresolve) classrel,
str "=",
pr_dicts NOBR [DictConst dss]
];
fun pr_classparam_inst ((classparam, c_inst), (thm, _)) =
concat [
(str o deresolve) classparam,
str "=",
pr_app thm false reserved_names NOBR (c_inst, [])
];
in
concat (
str "let"
:: (str o deresolve) inst
:: pr_tyvar_dicts arity
@ str "="
@@ (Pretty.enclose "(" ");;" o Pretty.breaks) [
enum_default "()" ";" "{" "}" (map pr_superclass superarities
@ map pr_classparam_inst classparam_insts),
str ":",
pr_tycoexpr NOBR (class, [tyco `%% map (ITyVar o fst) arity])
]
)
end;
in pr_stmt end;
fun pr_ocaml_module name content =
Pretty.chunks (
str ("module " ^ name ^ " = ")
:: str "struct"
:: str ""
:: content
@ str ""
@@ str ("end;; (*struct " ^ name ^ "*)")
);
val literals_ocaml = let
fun chr i =
let
val xs = string_of_int i;
val ys = replicate_string (3 - length (explode xs)) "0";
in "\\" ^ ys ^ xs end;
fun char_ocaml c =
let
val i = ord c;
val s = if i < 32 orelse i = 34 orelse i = 39 orelse i = 92 orelse i > 126
then chr i else c
in s end;
in Literals {
literal_char = enclose "'" "'" o char_ocaml,
literal_string = quote o translate_string char_ocaml,
literal_numeral = fn unbounded => fn k => if k >= 0 then
if unbounded then
"(Big_int.big_int_of_int " ^ string_of_int k ^ ")"
else string_of_int k
else
if unbounded then
"(Big_int.big_int_of_int " ^ (enclose "(" ")" o prefix "-"
o string_of_int o op ~) k ^ ")"
else (enclose "(" ")" o prefix "-" o string_of_int o op ~) k,
literal_list = Pretty.enum ";" "[" "]",
infix_cons = (6, "::")
} end;
(** SML/OCaml generic part **)
local
datatype ml_node =
Dummy of string
| Stmt of string * ml_stmt
| Module of string * ((Name.context * Name.context) * ml_node Graph.T);
in
fun ml_node_of_program labelled_name module_name reserved_names raw_module_alias program =
let
val module_alias = if is_some module_name then K module_name else raw_module_alias;
val reserved_names = Name.make_context reserved_names;
val empty_module = ((reserved_names, reserved_names), Graph.empty);
fun map_node [] f = f
| map_node (m::ms) f =
Graph.default_node (m, Module (m, empty_module))
#> Graph.map_node m (fn (Module (module_name, (nsp, nodes))) =>
Module (module_name, (nsp, map_node ms f nodes)));
fun map_nsp_yield [] f (nsp, nodes) =
let
val (x, nsp') = f nsp
in (x, (nsp', nodes)) end
| map_nsp_yield (m::ms) f (nsp, nodes) =
let
val (x, nodes') =
nodes
|> Graph.default_node (m, Module (m, empty_module))
|> Graph.map_node_yield m (fn Module (d_module_name, nsp_nodes) =>
let
val (x, nsp_nodes') = map_nsp_yield ms f nsp_nodes
in (x, Module (d_module_name, nsp_nodes')) end)
in (x, (nsp, nodes')) end;
fun map_nsp_fun_yield f (nsp_fun, nsp_typ) =
let
val (x, nsp_fun') = f nsp_fun
in (x, (nsp_fun', nsp_typ)) end;
fun map_nsp_typ_yield f (nsp_fun, nsp_typ) =
let
val (x, nsp_typ') = f nsp_typ
in (x, (nsp_fun, nsp_typ')) end;
val mk_name_module = mk_name_module reserved_names NONE module_alias program;
fun mk_name_stmt upper name nsp =
let
val (_, base) = dest_name name;
val base' = if upper then first_upper base else base;
val ([base''], nsp') = Name.variants [base'] nsp;
in (base'', nsp') end;
fun add_funs stmts =
fold_map
(fn (name, Code_Thingol.Fun stmt) =>
map_nsp_fun_yield (mk_name_stmt false name) #>>
rpair (name, stmt |> apsnd (filter (snd o snd)))
| (name, _) =>
error ("Function block containing illegal statement: " ^ labelled_name name)
) stmts
#>> (split_list #> apsnd MLFuns);
fun add_datatypes stmts =
fold_map
(fn (name, Code_Thingol.Datatype stmt) =>
map_nsp_typ_yield (mk_name_stmt false name) #>> rpair (SOME (name, stmt))
| (name, Code_Thingol.Datatypecons _) =>
map_nsp_fun_yield (mk_name_stmt true name) #>> rpair NONE
| (name, _) =>
error ("Datatype block containing illegal statement: " ^ labelled_name name)
) stmts
#>> (split_list #> apsnd (map_filter I
#> (fn [] => error ("Datatype block without data statement: "
^ (commas o map (labelled_name o fst)) stmts)
| stmts => MLDatas stmts)));
fun add_class stmts =
fold_map
(fn (name, Code_Thingol.Class info) =>
map_nsp_typ_yield (mk_name_stmt false name) #>> rpair (SOME (name, info))
| (name, Code_Thingol.Classrel _) =>
map_nsp_fun_yield (mk_name_stmt false name) #>> rpair NONE
| (name, Code_Thingol.Classparam _) =>
map_nsp_fun_yield (mk_name_stmt false name) #>> rpair NONE
| (name, _) =>
error ("Class block containing illegal statement: " ^ labelled_name name)
) stmts
#>> (split_list #> apsnd (map_filter I
#> (fn [] => error ("Class block without class statement: "
^ (commas o map (labelled_name o fst)) stmts)
| [stmt] => MLClass stmt)));
fun add_inst [(name, Code_Thingol.Classinst stmt)] =
map_nsp_fun_yield (mk_name_stmt false name)
#>> (fn base => ([base], MLClassinst (name, stmt)));
fun add_stmts ((stmts as (_, Code_Thingol.Fun _)::_)) =
add_funs stmts
| add_stmts ((stmts as (_, Code_Thingol.Datatypecons _)::_)) =
add_datatypes stmts
| add_stmts ((stmts as (_, Code_Thingol.Datatype _)::_)) =
add_datatypes stmts
| add_stmts ((stmts as (_, Code_Thingol.Class _)::_)) =
add_class stmts
| add_stmts ((stmts as (_, Code_Thingol.Classrel _)::_)) =
add_class stmts
| add_stmts ((stmts as (_, Code_Thingol.Classparam _)::_)) =
add_class stmts
| add_stmts ((stmts as [(_, Code_Thingol.Classinst _)])) =
add_inst stmts
| add_stmts stmts = error ("Illegal mutual dependencies: " ^
(commas o map (labelled_name o fst)) stmts);
fun add_stmts' stmts nsp_nodes =
let
val names as (name :: names') = map fst stmts;
val deps =
[]
|> fold (fold (insert (op =)) o Graph.imm_succs program) names
|> subtract (op =) names;
val (module_names, _) = (split_list o map dest_name) names;
val module_name = (the_single o distinct (op =) o map mk_name_module) module_names
handle Empty =>
error ("Different namespace prefixes for mutual dependencies:\n"
^ commas (map labelled_name names)
^ "\n"
^ commas module_names);
val module_name_path = NameSpace.explode module_name;
fun add_dep name name' =
let
val module_name' = (mk_name_module o fst o dest_name) name';
in if module_name = module_name' then
map_node module_name_path (Graph.add_edge (name, name'))
else let
val (common, (diff1::_, diff2::_)) = chop_prefix (op =)
(module_name_path, NameSpace.explode module_name');
in
map_node common
(fn node => Graph.add_edge_acyclic (diff1, diff2) node
handle Graph.CYCLES _ => error ("Dependency "
^ quote name ^ " -> " ^ quote name'
^ " would result in module dependency cycle"))
end end;
in
nsp_nodes
|> map_nsp_yield module_name_path (add_stmts stmts)
|-> (fn (base' :: bases', stmt') =>
apsnd (map_node module_name_path (Graph.new_node (name, (Stmt (base', stmt')))
#> fold2 (fn name' => fn base' =>
Graph.new_node (name', (Dummy base'))) names' bases')))
|> apsnd (fold (fn name => fold (add_dep name) deps) names)
|> apsnd (fold_product (curry (map_node module_name_path o Graph.add_edge)) names names)
end;
val (_, nodes) = empty_module
|> fold add_stmts' (map (AList.make (Graph.get_node program))
(rev (Graph.strong_conn program)));
fun deresolver prefix name =
let
val module_name = (fst o dest_name) name;
val module_name' = (NameSpace.explode o mk_name_module) module_name;
val (_, (_, remainder)) = chop_prefix (op =) (prefix, module_name');
val stmt_name =
nodes
|> fold (fn name => fn node => case Graph.get_node node name
of Module (_, (_, node)) => node) module_name'
|> (fn node => case Graph.get_node node name of Stmt (stmt_name, _) => stmt_name
| Dummy stmt_name => stmt_name);
in
NameSpace.implode (remainder @ [stmt_name])
end handle Graph.UNDEF _ =>
error ("Unknown statement name: " ^ labelled_name name);
in (deresolver, nodes) end;
fun serialize_ml target compile pr_module pr_stmt raw_module_name labelled_name reserved_names includes raw_module_alias
_ syntax_tyco syntax_const program cs destination =
let
val is_cons = Code_Thingol.is_cons program;
val stmt_names = Code_Target.stmt_names_of_destination destination;
val module_name = if null stmt_names then raw_module_name else SOME "Code";
val (deresolver, nodes) = ml_node_of_program labelled_name module_name
reserved_names raw_module_alias program;
val reserved_names = make_vars reserved_names;
fun pr_node prefix (Dummy _) =
NONE
| pr_node prefix (Stmt (_, stmt)) = if null stmt_names orelse
(not o null o filter (member (op =) stmt_names) o stmt_names_of) stmt then SOME
(pr_stmt syntax_tyco syntax_const labelled_name reserved_names
(deresolver prefix) is_cons stmt)
else NONE
| pr_node prefix (Module (module_name, (_, nodes))) =
separate (str "")
((map_filter (pr_node (prefix @ [module_name]) o Graph.get_node nodes)
o rev o flat o Graph.strong_conn) nodes)
|> (if null stmt_names then pr_module module_name else Pretty.chunks)
|> SOME;
val cs' = map_filter (try (deresolver (if is_some module_name then the_list module_name else [])))
cs;
val p = Pretty.chunks (separate (str "") (map snd includes @ (map_filter
(pr_node [] o Graph.get_node nodes) o rev o flat o Graph.strong_conn) nodes));
in
Code_Target.mk_serialization target
(case compile of SOME compile => SOME (compile o Code_Target.code_of_pretty) | NONE => NONE)
(fn NONE => Code_Target.code_writeln | SOME file => File.write file o Code_Target.code_of_pretty)
(rpair cs' o Code_Target.code_of_pretty) p destination
end;
end; (*local*)
(** ML (system language) code for evaluation and instrumentalization **)
fun ml_code_of thy = Code_Target.serialize_custom thy
(target_SML, (fn _ => fn [] => serialize_ml target_SML (SOME (K ())) (K Pretty.chunks) pr_sml_stmt (SOME ""),
literals_sml));
(* evaluation *)
fun eval eval'' term_of reff thy ct args =
let
val ctxt = ProofContext.init thy;
val _ = if null (term_frees (term_of ct)) then () else error ("Term "
^ quote (Syntax.string_of_term_global thy (term_of ct))
^ " to be evaluated contains free variables");
fun eval' program ((vs, ty), t) deps =
let
val _ = if Code_Thingol.contains_dictvar t then
error "Term to be evaluated constains free dictionaries" else ();
val program' = program
|> Graph.new_node (Code_Name.value_name,
Code_Thingol.Fun (([], ty), [(([], t), (Drule.dummy_thm, true))]))
|> fold (curry Graph.add_edge Code_Name.value_name) deps;
val (value_code, [value_name']) = ml_code_of thy program' [Code_Name.value_name];
val sml_code = "let\n" ^ value_code ^ "\nin " ^ value_name'
^ space_implode " " (map (enclose "(" ")") args) ^ " end";
in ML_Context.evaluate ctxt Output.ml_output false reff sml_code end;
in eval'' thy (fn t => (t, eval')) ct end;
fun eval_conv reff = eval Code_Thingol.eval_conv Thm.term_of reff;
fun eval_term reff = eval Code_Thingol.eval_term I reff;
(* instrumentalization by antiquotation *)
local
structure CodeAntiqData = ProofDataFun
(
type T = string list * (bool * (string * (string * (string * string) list) Susp.T));
fun init _ = ([], (true, ("", Susp.value ("", []))));
);
val is_first_occ = fst o snd o CodeAntiqData.get;
fun delayed_code thy consts () =
let
val (consts', program) = Code_Thingol.consts_program thy consts;
val (ml_code, consts'') = ml_code_of thy program consts';
val _ = if length consts <> length consts'' then
error ("One of the constants " ^ commas (map (quote o Code_Unit.string_of_const thy) consts)
^ "\nhas a user-defined serialization") else ();
in (ml_code, consts ~~ consts'') end;
fun register_const const ctxt =
let
val (consts, (_, (struct_name, _))) = CodeAntiqData.get ctxt;
val consts' = insert (op =) const consts;
val (struct_name', ctxt') = if struct_name = ""
then ML_Antiquote.variant "Code" ctxt
else (struct_name, ctxt);
val acc_code = Susp.delay (delayed_code (ProofContext.theory_of ctxt) consts');
in CodeAntiqData.put (consts', (false, (struct_name', acc_code))) ctxt' end;
fun print_code struct_name is_first const ctxt =
let
val (consts, (_, (struct_code_name, acc_code))) = CodeAntiqData.get ctxt;
val (raw_ml_code, consts_map) = Susp.force acc_code;
val const'' = NameSpace.append (NameSpace.append struct_name struct_code_name)
((the o AList.lookup (op =) consts_map) const);
val ml_code = if is_first then "\nstructure " ^ struct_code_name
^ " =\nstruct\n\n" ^ raw_ml_code ^ "\nend;\n\n"
else "";
in (ml_code, const'') end;
in
fun ml_code_antiq raw_const {struct_name, background} =
let
val const = Code_Unit.check_const (ProofContext.theory_of background) raw_const;
val is_first = is_first_occ background;
val background' = register_const const background;
in (print_code struct_name is_first const, background') end;
end; (*local*)
(** Isar setup **)
val _ = ML_Context.add_antiq "code" (fn _ => Args.term >> ml_code_antiq);
fun isar_seri_sml module_name =
Code_Target.parse_args (Scan.succeed ())
#> (fn () => serialize_ml target_SML
(SOME (use_text ML_Context.name_space (1, "generated code") Output.ml_output false))
pr_sml_module pr_sml_stmt module_name);
fun isar_seri_ocaml module_name =
Code_Target.parse_args (Scan.succeed ())
#> (fn () => serialize_ml target_OCaml NONE
pr_ocaml_module pr_ocaml_stmt module_name);
val setup =
Code_Target.add_target (target_SML, (isar_seri_sml, literals_sml))
#> Code_Target.add_target (target_OCaml, (isar_seri_ocaml, literals_ocaml))
#> Code_Target.add_syntax_tyco target_SML "fun" (SOME (2, fn pr_typ => fn fxy => fn [ty1, ty2] =>
brackify_infix (1, R) fxy [
pr_typ (INFX (1, X)) ty1,
str "->",
pr_typ (INFX (1, R)) ty2
]))
#> Code_Target.add_syntax_tyco target_OCaml "fun" (SOME (2, fn pr_typ => fn fxy => fn [ty1, ty2] =>
brackify_infix (1, R) fxy [
pr_typ (INFX (1, X)) ty1,
str "->",
pr_typ (INFX (1, R)) ty2
]))
#> fold (Code_Target.add_reserved target_SML) ML_Syntax.reserved_names
#> fold (Code_Target.add_reserved target_SML)
["o" (*dictionary projections use it already*), "Fail", "div", "mod" (*standard infixes*)]
#> fold (Code_Target.add_reserved target_OCaml) [
"and", "as", "assert", "begin", "class",
"constraint", "do", "done", "downto", "else", "end", "exception",
"external", "false", "for", "fun", "function", "functor", "if",
"in", "include", "inherit", "initializer", "lazy", "let", "match", "method",
"module", "mutable", "new", "object", "of", "open", "or", "private", "rec",
"sig", "struct", "then", "to", "true", "try", "type", "val",
"virtual", "when", "while", "with"
]
#> fold (Code_Target.add_reserved target_OCaml) ["failwith", "mod"];
end; (*struct*)