(* Title: Tools/Code/code_ml.ML
Author: Florian Haftmann, TU Muenchen
Serializer for SML and OCaml.
*)
signature CODE_ML =
sig
val target_SML: string
val target_OCaml: string
val setup: theory -> theory
end;
structure Code_ML : CODE_ML =
struct
open Basic_Code_Thingol;
open Code_Printer;
infixr 5 @@;
infixr 5 @|;
(** generic **)
val target_SML = "SML";
val target_OCaml = "OCaml";
datatype ml_binding =
ML_Function of string * (typscheme * ((iterm list * iterm) * (thm option * bool)) list)
| ML_Instance of string * ((class * (string * (vname * sort) list))
* ((class * (string * (string * dict list list))) list
* (((string * const) * (thm * bool)) list * ((string * const) * (thm * bool)) list)));
datatype ml_stmt =
ML_Exc of string * (typscheme * int)
| ML_Val of ml_binding
| ML_Funs of ml_binding list * string list
| ML_Datas of (string * ((vname * sort) list * ((string * vname list) * itype list) list)) list
| ML_Class of string * (vname * ((class * string) list * (string * itype) list));
fun stmt_name_of_binding (ML_Function (name, _)) = name
| stmt_name_of_binding (ML_Instance (name, _)) = name;
fun stmt_names_of (ML_Exc (name, _)) = [name]
| stmt_names_of (ML_Val binding) = [stmt_name_of_binding binding]
| stmt_names_of (ML_Funs (bindings, _)) = map stmt_name_of_binding bindings
| stmt_names_of (ML_Datas ds) = map fst ds
| stmt_names_of (ML_Class (name, _)) = [name];
fun print_product _ [] = NONE
| print_product print [x] = SOME (print x)
| print_product print xs = (SOME o enum " *" "" "") (map print xs);
fun tuplify _ _ [] = NONE
| tuplify print fxy [x] = SOME (print fxy x)
| tuplify print _ xs = SOME (enum "," "(" ")" (map (print NOBR) xs));
(** SML serializer **)
fun print_sml_stmt labelled_name tyco_syntax const_syntax reserved is_cons deresolve =
let
fun print_tyco_expr fxy (tyco, []) = (str o deresolve) tyco
| print_tyco_expr fxy (tyco, [ty]) =
concat [print_typ BR ty, (str o deresolve) tyco]
| print_tyco_expr fxy (tyco, tys) =
concat [enum "," "(" ")" (map (print_typ BR) tys), (str o deresolve) tyco]
and print_typ fxy (tyco `%% tys) = (case tyco_syntax tyco
of NONE => print_tyco_expr fxy (tyco, tys)
| SOME (i, print) => print print_typ fxy tys)
| print_typ fxy (ITyVar v) = str ("'" ^ v);
fun print_dicttyp (class, ty) = print_tyco_expr NOBR (class, [ty]);
fun print_typscheme_prefix (vs, p) = enum " ->" "" ""
(map_filter (fn (v, sort) =>
(print_product (fn class => print_dicttyp (class, ITyVar v)) sort)) vs @| p);
fun print_typscheme (vs, ty) = print_typscheme_prefix (vs, print_typ NOBR ty);
fun print_dicttypscheme (vs, class_ty) = print_typscheme_prefix (vs, print_dicttyp class_ty);
fun print_dict is_pseudo_fun fxy (DictConst (inst, dss)) =
brackify fxy ((str o deresolve) inst ::
(if is_pseudo_fun inst then [str "()"]
else map_filter (print_dicts is_pseudo_fun BR) dss))
| print_dict is_pseudo_fun fxy (DictVar (classrels, (v, (i, k)))) =
let
val v_p = str (if k = 1 then first_upper v ^ "_"
else first_upper v ^ string_of_int (i+1) ^ "_");
in case classrels
of [] => v_p
| [classrel] => brackets [(str o deresolve) classrel, v_p]
| classrels => brackets
[enum " o" "(" ")" (map (str o deresolve) classrels), v_p]
end
and print_dicts is_pseudo_fun = tuplify (print_dict is_pseudo_fun);
val print_dict_args = map_filter (fn (v, sort) => print_dicts (K false) BR
(map_index (fn (i, _) => DictVar ([], (v, (i, length sort)))) sort));
fun print_term is_pseudo_fun some_thm vars fxy (IConst c) =
print_app is_pseudo_fun some_thm vars fxy (c, [])
| print_term is_pseudo_fun some_thm vars fxy (IVar NONE) =
str "_"
| print_term is_pseudo_fun some_thm vars fxy (IVar (SOME v)) =
str (lookup_var vars v)
| print_term is_pseudo_fun some_thm vars fxy (t as t1 `$ t2) =
(case Code_Thingol.unfold_const_app t
of SOME c_ts => print_app is_pseudo_fun some_thm vars fxy c_ts
| NONE => brackify fxy [print_term is_pseudo_fun some_thm vars NOBR t1,
print_term is_pseudo_fun some_thm vars BR t2])
| print_term is_pseudo_fun some_thm vars fxy (t as _ `|=> _) =
let
val (binds, t') = Code_Thingol.unfold_pat_abs t;
fun print_abs (pat, ty) =
print_bind is_pseudo_fun some_thm NOBR pat
#>> (fn p => concat [str "fn", p, str "=>"]);
val (ps, vars') = fold_map print_abs binds vars;
in brackets (ps @ [print_term is_pseudo_fun some_thm vars' NOBR t']) end
| print_term is_pseudo_fun some_thm vars fxy (ICase (cases as (_, t0))) =
(case Code_Thingol.unfold_const_app t0
of SOME (c_ts as ((c, _), _)) => if is_none (const_syntax c)
then print_case is_pseudo_fun some_thm vars fxy cases
else print_app is_pseudo_fun some_thm vars fxy c_ts
| NONE => print_case is_pseudo_fun some_thm vars fxy cases)
and print_app_expr is_pseudo_fun some_thm vars (app as ((c, ((_, iss), function_typs)), ts)) =
if is_cons c then
let val k = length function_typs in
if k < 2 orelse length ts = k
then (str o deresolve) c
:: the_list (tuplify (print_term is_pseudo_fun some_thm vars) BR ts)
else [print_term is_pseudo_fun some_thm vars BR (Code_Thingol.eta_expand k app)]
end
else if is_pseudo_fun c
then (str o deresolve) c @@ str "()"
else (str o deresolve) c :: map_filter (print_dicts is_pseudo_fun BR) iss
@ map (print_term is_pseudo_fun some_thm vars BR) ts
and print_app is_pseudo_fun some_thm vars = gen_print_app (print_app_expr is_pseudo_fun)
(print_term is_pseudo_fun) const_syntax some_thm vars
and print_bind is_pseudo_fun = gen_print_bind (print_term is_pseudo_fun)
and print_case is_pseudo_fun some_thm vars fxy (cases as ((_, [_]), _)) =
let
val (binds, body) = Code_Thingol.unfold_let (ICase cases);
fun print_match ((pat, ty), t) vars =
vars
|> print_bind is_pseudo_fun some_thm NOBR pat
|>> (fn p => semicolon [str "val", p, str "=",
print_term is_pseudo_fun some_thm vars NOBR t])
val (ps, vars') = fold_map print_match binds vars;
in
Pretty.chunks [
Pretty.block [str "let", Pretty.fbrk, Pretty.chunks ps],
Pretty.block [str "in", Pretty.fbrk, print_term is_pseudo_fun some_thm vars' NOBR body],
str "end"
]
end
| print_case is_pseudo_fun some_thm vars fxy (((t, ty), clause :: clauses), _) =
let
fun print_select delim (pat, body) =
let
val (p, vars') = print_bind is_pseudo_fun some_thm NOBR pat vars;
in
concat [str delim, p, str "=>", print_term is_pseudo_fun some_thm vars' NOBR body]
end;
in
brackets (
str "case"
:: print_term is_pseudo_fun some_thm vars NOBR t
:: print_select "of" clause
:: map (print_select "|") clauses
)
end
| print_case is_pseudo_fun some_thm vars fxy ((_, []), _) =
(concat o map str) ["raise", "Fail", "\"empty case\""];
fun print_val_decl print_typscheme (name, typscheme) = concat
[str "val", str (deresolve name), str ":", print_typscheme typscheme];
fun print_datatype_decl definer (tyco, (vs, cos)) =
let
fun print_co ((co, _), []) = str (deresolve co)
| print_co ((co, _), tys) = concat [str (deresolve co), str "of",
enum " *" "" "" (map (print_typ (INFX (2, X))) tys)];
in
concat (
str definer
:: print_tyco_expr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
:: separate (str "|") (map print_co cos)
)
end;
fun print_def is_pseudo_fun needs_typ definer
(ML_Function (name, (vs_ty as (vs, ty), eq :: eqs))) =
let
fun print_eqn definer ((ts, t), (some_thm, _)) =
let
val consts = fold Code_Thingol.add_constnames (t :: ts) [];
val vars = reserved
|> intro_base_names
(is_none o const_syntax) deresolve consts
|> intro_vars ((fold o Code_Thingol.fold_varnames)
(insert (op =)) ts []);
val prolog = if needs_typ then
concat [str definer, (str o deresolve) name, str ":", print_typ NOBR ty]
else (concat o map str) [definer, deresolve name];
in
concat (
prolog
:: (if is_pseudo_fun name then [str "()"]
else print_dict_args vs
@ map (print_term is_pseudo_fun some_thm vars BR) ts)
@ str "="
@@ print_term is_pseudo_fun some_thm vars NOBR t
)
end
val shift = if null eqs then I else
map (Pretty.block o single o Pretty.block o single);
in pair
(print_val_decl print_typscheme (name, vs_ty))
((Pretty.block o Pretty.fbreaks o shift) (
print_eqn definer eq
:: map (print_eqn "|") eqs
))
end
| print_def is_pseudo_fun _ definer
(ML_Instance (inst, ((class, (tyco, vs)), (super_instances, (classparam_instances, _))))) =
let
fun print_super_instance (_, (classrel, dss)) =
concat [
(str o Long_Name.base_name o deresolve) classrel,
str "=",
print_dict is_pseudo_fun NOBR (DictConst dss)
];
fun print_classparam_instance ((classparam, const), (thm, _)) =
concat [
(str o Long_Name.base_name o deresolve) classparam,
str "=",
print_app (K false) (SOME thm) reserved NOBR (const, [])
];
in pair
(print_val_decl print_dicttypscheme
(inst, (vs, (class, tyco `%% map (ITyVar o fst) vs))))
(concat (
str definer
:: (str o deresolve) inst
:: (if is_pseudo_fun inst then [str "()"]
else print_dict_args vs)
@ str "="
:: enum "," "{" "}"
(map print_super_instance super_instances
@ map print_classparam_instance classparam_instances)
:: str ":"
@@ print_tyco_expr NOBR (class, [tyco `%% map (ITyVar o fst) vs])
))
end;
fun print_stmt (ML_Exc (name, (vs_ty, n))) = pair
[print_val_decl print_typscheme (name, vs_ty)]
((semicolon o map str) (
(if n = 0 then "val" else "fun")
:: deresolve name
:: replicate n "_"
@ "="
:: "raise"
:: "Fail"
@@ (ML_Syntax.print_string o Long_Name.base_name o Long_Name.qualifier) name
))
| print_stmt (ML_Val binding) =
let
val (sig_p, p) = print_def (K false) true "val" binding
in pair
[sig_p]
(semicolon [p])
end
| print_stmt (ML_Funs (binding :: bindings, pseudo_funs)) =
let
val print_def' = print_def (member (op =) pseudo_funs) false;
fun print_pseudo_fun name = concat [
str "val",
(str o deresolve) name,
str "=",
(str o deresolve) name,
str "();"
];
val (sig_ps, (ps, p)) = (apsnd split_last o split_list)
(print_def' "fun" binding :: map (print_def' "and") bindings);
val pseudo_ps = map print_pseudo_fun pseudo_funs;
in pair
sig_ps
(Pretty.chunks (ps @ semicolon [p] :: pseudo_ps))
end
| print_stmt (ML_Datas [(tyco, (vs, []))]) =
let
val ty_p = print_tyco_expr NOBR (tyco, map (ITyVar o fst) vs);
in
pair
[concat [str "type", ty_p]]
(concat [str "datatype", ty_p, str "=", str "EMPTY__"])
end
| print_stmt (ML_Datas (data :: datas)) =
let
val sig_ps = print_datatype_decl "datatype" data
:: map (print_datatype_decl "and") datas;
val (ps, p) = split_last sig_ps;
in pair
sig_ps
(Pretty.chunks (ps @| semicolon [p]))
end
| print_stmt (ML_Class (class, (v, (super_classes, classparams)))) =
let
fun print_field s p = concat [str s, str ":", p];
fun print_proj s p = semicolon
(map str ["val", s, "=", "#" ^ s, ":"] @| p);
fun print_super_class_decl (super_class, classrel) =
print_val_decl print_dicttypscheme
(classrel, ([(v, [class])], (super_class, ITyVar v)));
fun print_super_class_field (super_class, classrel) =
print_field (deresolve classrel) (print_dicttyp (super_class, ITyVar v));
fun print_super_class_proj (super_class, classrel) =
print_proj (deresolve classrel)
(print_dicttypscheme ([(v, [class])], (super_class, ITyVar v)));
fun print_classparam_decl (classparam, ty) =
print_val_decl print_typscheme
(classparam, ([(v, [class])], ty));
fun print_classparam_field (classparam, ty) =
print_field (deresolve classparam) (print_typ NOBR ty);
fun print_classparam_proj (classparam, ty) =
print_proj (deresolve classparam)
(print_typscheme ([(v, [class])], ty));
in pair
(concat [str "type", print_dicttyp (class, ITyVar v)]
:: map print_super_class_decl super_classes
@ map print_classparam_decl classparams)
(Pretty.chunks (
concat [
str ("type '" ^ v),
(str o deresolve) class,
str "=",
enum "," "{" "};" (
map print_super_class_field super_classes
@ map print_classparam_field classparams
)
]
:: map print_super_class_proj super_classes
@ map print_classparam_proj classparams
))
end;
in print_stmt end;
fun print_sml_module name some_decls body =
Pretty.chunks2 (
Pretty.chunks (
str ("structure " ^ name ^ (if is_some some_decls then " : sig" else " ="))
:: (the_list o Option.map (indent 2 o Pretty.chunks)) some_decls
@| (if is_some some_decls then str "end = struct" else str "struct")
)
:: body
@| 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 k => "(" ^ string_of_int k ^ " : IntInf.int)",
literal_positive_numeral = fn k => "(" ^ string_of_int k ^ " : IntInf.int)",
literal_alternative_numeral = fn k => "(" ^ string_of_int k ^ " : IntInf.int)",
literal_naive_numeral = string_of_int,
literal_list = enum "," "[" "]",
infix_cons = (7, "::")
};
(** OCaml serializer **)
fun print_ocaml_stmt labelled_name tyco_syntax const_syntax reserved is_cons deresolve =
let
fun print_tyco_expr fxy (tyco, []) = (str o deresolve) tyco
| print_tyco_expr fxy (tyco, [ty]) =
concat [print_typ BR ty, (str o deresolve) tyco]
| print_tyco_expr fxy (tyco, tys) =
concat [enum "," "(" ")" (map (print_typ BR) tys), (str o deresolve) tyco]
and print_typ fxy (tyco `%% tys) = (case tyco_syntax tyco
of NONE => print_tyco_expr fxy (tyco, tys)
| SOME (i, print) => print print_typ fxy tys)
| print_typ fxy (ITyVar v) = str ("'" ^ v);
fun print_dicttyp (class, ty) = print_tyco_expr NOBR (class, [ty]);
fun print_typscheme_prefix (vs, p) = enum " ->" "" ""
(map_filter (fn (v, sort) =>
(print_product (fn class => print_dicttyp (class, ITyVar v)) sort)) vs @| p);
fun print_typscheme (vs, ty) = print_typscheme_prefix (vs, print_typ NOBR ty);
fun print_dicttypscheme (vs, class_ty) = print_typscheme_prefix (vs, print_dicttyp class_ty);
fun print_dict is_pseudo_fun fxy (DictConst (inst, dss)) =
brackify fxy ((str o deresolve) inst ::
(if is_pseudo_fun inst then [str "()"]
else map_filter (print_dicts is_pseudo_fun BR) dss))
| print_dict is_pseudo_fun fxy (DictVar (classrels, (v, (i, k)))) =
str (if k = 1 then "_" ^ first_upper v
else "_" ^ first_upper v ^ string_of_int (i+1))
|> fold_rev (fn classrel => fn p =>
Pretty.block [p, str ".", (str o deresolve) classrel]) classrels
and print_dicts is_pseudo_fun = tuplify (print_dict is_pseudo_fun);
val print_dict_args = map_filter (fn (v, sort) => print_dicts (K false) BR
(map_index (fn (i, _) => DictVar ([], (v, (i, length sort)))) sort));
fun print_term is_pseudo_fun some_thm vars fxy (IConst c) =
print_app is_pseudo_fun some_thm vars fxy (c, [])
| print_term is_pseudo_fun some_thm vars fxy (IVar NONE) =
str "_"
| print_term is_pseudo_fun some_thm vars fxy (IVar (SOME v)) =
str (lookup_var vars v)
| print_term is_pseudo_fun some_thm vars fxy (t as t1 `$ t2) =
(case Code_Thingol.unfold_const_app t
of SOME c_ts => print_app is_pseudo_fun some_thm vars fxy c_ts
| NONE => brackify fxy [print_term is_pseudo_fun some_thm vars NOBR t1,
print_term is_pseudo_fun some_thm vars BR t2])
| print_term is_pseudo_fun some_thm vars fxy (t as _ `|=> _) =
let
val (binds, t') = Code_Thingol.unfold_pat_abs t;
val (ps, vars') = fold_map (print_bind is_pseudo_fun some_thm BR o fst) binds vars;
in brackets (str "fun" :: ps @ str "->" @@ print_term is_pseudo_fun some_thm vars' NOBR t') end
| print_term is_pseudo_fun some_thm vars fxy (ICase (cases as (_, t0))) =
(case Code_Thingol.unfold_const_app t0
of SOME (c_ts as ((c, _), _)) => if is_none (const_syntax c)
then print_case is_pseudo_fun some_thm vars fxy cases
else print_app is_pseudo_fun some_thm vars fxy c_ts
| NONE => print_case is_pseudo_fun some_thm vars fxy cases)
and print_app_expr is_pseudo_fun some_thm vars (app as ((c, ((_, iss), tys)), ts)) =
if is_cons c then
let val k = length tys in
if length ts = k
then (str o deresolve) c
:: the_list (tuplify (print_term is_pseudo_fun some_thm vars) BR ts)
else [print_term is_pseudo_fun some_thm vars BR (Code_Thingol.eta_expand k app)]
end
else if is_pseudo_fun c
then (str o deresolve) c @@ str "()"
else (str o deresolve) c :: map_filter (print_dicts is_pseudo_fun BR) iss
@ map (print_term is_pseudo_fun some_thm vars BR) ts
and print_app is_pseudo_fun some_thm vars = gen_print_app (print_app_expr is_pseudo_fun)
(print_term is_pseudo_fun) const_syntax some_thm vars
and print_bind is_pseudo_fun = gen_print_bind (print_term is_pseudo_fun)
and print_case is_pseudo_fun some_thm vars fxy (cases as ((_, [_]), _)) =
let
val (binds, body) = Code_Thingol.unfold_let (ICase cases);
fun print_let ((pat, ty), t) vars =
vars
|> print_bind is_pseudo_fun some_thm NOBR pat
|>> (fn p => concat
[str "let", p, str "=", print_term is_pseudo_fun some_thm vars NOBR t, str "in"])
val (ps, vars') = fold_map print_let binds vars;
in
brackify_block fxy (Pretty.chunks ps) []
(print_term is_pseudo_fun some_thm vars' NOBR body)
end
| print_case is_pseudo_fun some_thm vars fxy (((t, ty), clause :: clauses), _) =
let
fun print_select delim (pat, body) =
let
val (p, vars') = print_bind is_pseudo_fun some_thm NOBR pat vars;
in concat [str delim, p, str "->", print_term is_pseudo_fun some_thm vars' NOBR body] end;
in
brackets (
str "match"
:: print_term is_pseudo_fun some_thm vars NOBR t
:: print_select "with" clause
:: map (print_select "|") clauses
)
end
| print_case is_pseudo_fun some_thm vars fxy ((_, []), _) =
(concat o map str) ["failwith", "\"empty case\""];
fun print_val_decl print_typscheme (name, typscheme) = concat
[str "val", str (deresolve name), str ":", print_typscheme typscheme];
fun print_datatype_decl definer (tyco, (vs, cos)) =
let
fun print_co ((co, _), []) = str (deresolve co)
| print_co ((co, _), tys) = concat [str (deresolve co), str "of",
enum " *" "" "" (map (print_typ (INFX (2, X))) tys)];
in
concat (
str definer
:: print_tyco_expr NOBR (tyco, map (ITyVar o fst) vs)
:: str "="
:: separate (str "|") (map print_co cos)
)
end;
fun print_def is_pseudo_fun needs_typ definer
(ML_Function (name, (vs_ty as (vs, ty), eqs))) =
let
fun print_eqn ((ts, t), (some_thm, _)) =
let
val consts = fold Code_Thingol.add_constnames (t :: ts) [];
val vars = reserved
|> intro_vars ((fold o Code_Thingol.fold_varnames)
(insert (op =)) ts []);
in concat [
(Pretty.block o commas)
(map (print_term is_pseudo_fun some_thm vars NOBR) ts),
str "->",
print_term is_pseudo_fun some_thm vars NOBR t
] end;
fun print_eqns is_pseudo [((ts, t), (some_thm, _))] =
let
val consts = fold Code_Thingol.add_constnames (t :: ts) [];
val vars = reserved
|> intro_base_names
(is_none o const_syntax) deresolve consts
|> intro_vars ((fold o Code_Thingol.fold_varnames)
(insert (op =)) ts []);
in
concat (
(if is_pseudo then [str "()"]
else map (print_term is_pseudo_fun some_thm vars BR) ts)
@ str "="
@@ print_term is_pseudo_fun some_thm vars NOBR t
)
end
| print_eqns _ ((eq as (([_], _), _)) :: eqs) =
Pretty.block (
str "="
:: Pretty.brk 1
:: str "function"
:: Pretty.brk 1
:: print_eqn eq
:: maps (append [Pretty.fbrk, str "|", Pretty.brk 1]
o single o print_eqn) eqs
)
| print_eqns _ (eqs as eq :: eqs') =
let
val consts = fold Code_Thingol.add_constnames (map (snd o fst) eqs) [];
val vars = reserved
|> intro_base_names
(is_none o const_syntax) deresolve consts;
val dummy_parms = (map str o aux_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 commas) dummy_parms
:: Pretty.brk 1
:: str "with"
:: Pretty.brk 1
:: print_eqn eq
:: maps (append [Pretty.fbrk, str "|", Pretty.brk 1]
o single o print_eqn) eqs'
)
end;
val prolog = if needs_typ then
concat [str definer, (str o deresolve) name, str ":", print_typ NOBR ty]
else (concat o map str) [definer, deresolve name];
in pair
(print_val_decl print_typscheme (name, vs_ty))
(concat (
prolog
:: print_dict_args vs
@| print_eqns (is_pseudo_fun name) eqs
))
end
| print_def is_pseudo_fun _ definer
(ML_Instance (inst, ((class, (tyco, vs)), (super_instances, (classparam_instances, _))))) =
let
fun print_super_instance (_, (classrel, dss)) =
concat [
(str o deresolve) classrel,
str "=",
print_dict is_pseudo_fun NOBR (DictConst dss)
];
fun print_classparam_instance ((classparam, const), (thm, _)) =
concat [
(str o deresolve) classparam,
str "=",
print_app (K false) (SOME thm) reserved NOBR (const, [])
];
in pair
(print_val_decl print_dicttypscheme
(inst, (vs, (class, tyco `%% map (ITyVar o fst) vs))))
(concat (
str definer
:: (str o deresolve) inst
:: print_dict_args vs
@ str "="
@@ brackets [
enum_default "()" ";" "{" "}" (map print_super_instance super_instances
@ map print_classparam_instance classparam_instances),
str ":",
print_tyco_expr NOBR (class, [tyco `%% map (ITyVar o fst) vs])
]
))
end;
fun print_stmt (ML_Exc (name, (vs_ty, n))) = pair
[print_val_decl print_typscheme (name, vs_ty)]
((doublesemicolon o map str) (
"let"
:: deresolve name
:: replicate n "_"
@ "="
:: "failwith"
@@ (ML_Syntax.print_string o Long_Name.base_name o Long_Name.qualifier) name
))
| print_stmt (ML_Val binding) =
let
val (sig_p, p) = print_def (K false) true "let" binding
in pair
[sig_p]
(doublesemicolon [p])
end
| print_stmt (ML_Funs (binding :: bindings, pseudo_funs)) =
let
val print_def' = print_def (member (op =) pseudo_funs) false;
fun print_pseudo_fun name = concat [
str "let",
(str o deresolve) name,
str "=",
(str o deresolve) name,
str "();;"
];
val (sig_ps, (ps, p)) = (apsnd split_last o split_list)
(print_def' "let rec" binding :: map (print_def' "and") bindings);
val pseudo_ps = map print_pseudo_fun pseudo_funs;
in pair
sig_ps
(Pretty.chunks (ps @ doublesemicolon [p] :: pseudo_ps))
end
| print_stmt (ML_Datas [(tyco, (vs, []))]) =
let
val ty_p = print_tyco_expr NOBR (tyco, map (ITyVar o fst) vs);
in
pair
[concat [str "type", ty_p]]
(concat [str "type", ty_p, str "=", str "EMPTY__"])
end
| print_stmt (ML_Datas (data :: datas)) =
let
val sig_ps = print_datatype_decl "type" data
:: map (print_datatype_decl "and") datas;
val (ps, p) = split_last sig_ps;
in pair
sig_ps
(Pretty.chunks (ps @| doublesemicolon [p]))
end
| print_stmt (ML_Class (class, (v, (super_classes, classparams)))) =
let
fun print_field s p = concat [str s, str ":", p];
fun print_super_class_field (super_class, classrel) =
print_field (deresolve classrel) (print_dicttyp (super_class, ITyVar v));
fun print_classparam_decl (classparam, ty) =
print_val_decl print_typscheme
(classparam, ([(v, [class])], ty));
fun print_classparam_field (classparam, ty) =
print_field (deresolve classparam) (print_typ NOBR ty);
val w = "_" ^ first_upper v;
fun print_classparam_proj (classparam, _) =
(concat o map str) ["let", deresolve classparam, w, "=",
w ^ "." ^ deresolve classparam ^ ";;"];
val type_decl_p = concat [
str ("type '" ^ v),
(str o deresolve) class,
str "=",
enum_default "unit" ";" "{" "}" (
map print_super_class_field super_classes
@ map print_classparam_field classparams
)
];
in pair
(type_decl_p :: map print_classparam_decl classparams)
(Pretty.chunks (
doublesemicolon [type_decl_p]
:: map print_classparam_proj classparams
))
end;
in print_stmt end;
fun print_ocaml_module name some_decls body =
Pretty.chunks2 (
Pretty.chunks (
str ("module " ^ name ^ (if is_some some_decls then " : sig" else " ="))
:: (the_list o Option.map (indent 2 o Pretty.chunks)) some_decls
@| (if is_some some_decls then str "end = struct" else str "struct")
)
:: body
@| 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;
fun numeral_ocaml k = if k < 0
then "(Big_int.minus_big_int " ^ numeral_ocaml (~ k) ^ ")"
else if k <= 1073741823
then "(Big_int.big_int_of_int " ^ string_of_int k ^ ")"
else "(Big_int.big_int_of_string " ^ quote (string_of_int k) ^ ")"
in Literals {
literal_char = Library.enclose "'" "'" o char_ocaml,
literal_string = quote o translate_string char_ocaml,
literal_numeral = numeral_ocaml,
literal_positive_numeral = numeral_ocaml,
literal_alternative_numeral = numeral_ocaml,
literal_naive_numeral = numeral_ocaml,
literal_list = enum ";" "[" "]",
infix_cons = (6, "::")
} end;
(** SML/OCaml generic part **)
fun ml_program_of_program labelled_name reserved module_alias program =
let
fun namify_const upper base (nsp_const, nsp_type) =
let
val (base', nsp_const') = yield_singleton Name.variants
(if upper then first_upper base else base) nsp_const
in (base', (nsp_const', nsp_type)) end;
fun namify_type base (nsp_const, nsp_type) =
let
val (base', nsp_type') = yield_singleton Name.variants base nsp_type
in (base', (nsp_const, nsp_type')) end;
fun namify_stmt (Code_Thingol.Fun _) = namify_const false
| namify_stmt (Code_Thingol.Datatype _) = namify_type
| namify_stmt (Code_Thingol.Datatypecons _) = namify_const true
| namify_stmt (Code_Thingol.Class _) = namify_type
| namify_stmt (Code_Thingol.Classrel _) = namify_const false
| namify_stmt (Code_Thingol.Classparam _) = namify_const false
| namify_stmt (Code_Thingol.Classinst _) = namify_const false;
fun ml_binding_of_stmt (name, Code_Thingol.Fun (_, ((tysm as (vs, ty), raw_eqs), _))) =
let
val eqs = filter (snd o snd) raw_eqs;
val (eqs', some_value_name) = if null (filter_out (null o snd) vs) then case eqs
of [(([], t), some_thm)] => if (not o null o fst o Code_Thingol.unfold_fun) ty
then ([(([IVar (SOME "x")], t `$ IVar (SOME "x")), some_thm)], NONE)
else (eqs, SOME (name, member (op =) (Code_Thingol.add_constnames t []) name))
| _ => (eqs, NONE)
else (eqs, NONE)
in (ML_Function (name, (tysm, eqs')), some_value_name) end
| ml_binding_of_stmt (name, Code_Thingol.Classinst (stmt as ((_, (_, vs)), _))) =
(ML_Instance (name, stmt), if forall (null o snd) vs then SOME (name, false) else NONE)
| ml_binding_of_stmt (name, _) =
error ("Binding block containing illegal statement: " ^ labelled_name name)
fun modify_fun (name, stmt) =
let
val (binding, some_value_name) = ml_binding_of_stmt (name, stmt);
val ml_stmt = case binding
of ML_Function (name, ((vs, ty), [])) =>
ML_Exc (name, ((vs, ty),
(length o filter_out (null o snd)) vs + (length o fst o Code_Thingol.unfold_fun) ty))
| _ => case some_value_name
of NONE => ML_Funs ([binding], [])
| SOME (name, true) => ML_Funs ([binding], [name])
| SOME (name, false) => ML_Val binding
in SOME ml_stmt end;
fun modify_funs stmts = single (SOME
(ML_Funs (map_split ml_binding_of_stmt stmts |> (apsnd o map_filter o Option.map) fst)))
fun modify_datatypes stmts = single (SOME
(ML_Datas (map_filter
(fn (name, Code_Thingol.Datatype (_, stmt)) => SOME (name, stmt) | _ => NONE) stmts)))
fun modify_class stmts = single (SOME
(ML_Class (the_single (map_filter
(fn (name, Code_Thingol.Class (_, stmt)) => SOME (name, stmt) | _ => NONE) stmts))))
fun modify_stmts ([stmt as (name, stmt' as Code_Thingol.Fun _)]) =
if Code_Thingol.is_case stmt' then [] else [modify_fun stmt]
| modify_stmts ((stmts as (_, Code_Thingol.Fun _)::_)) =
modify_funs (filter_out (Code_Thingol.is_case o snd) stmts)
| modify_stmts ((stmts as (_, Code_Thingol.Datatypecons _)::_)) =
modify_datatypes stmts
| modify_stmts ((stmts as (_, Code_Thingol.Datatype _)::_)) =
modify_datatypes stmts
| modify_stmts ((stmts as (_, Code_Thingol.Class _)::_)) =
modify_class stmts
| modify_stmts ((stmts as (_, Code_Thingol.Classrel _)::_)) =
modify_class stmts
| modify_stmts ((stmts as (_, Code_Thingol.Classparam _)::_)) =
modify_class stmts
| modify_stmts ([stmt as (_, Code_Thingol.Classinst _)]) =
[modify_fun stmt]
| modify_stmts ((stmts as (_, Code_Thingol.Classinst _)::_)) =
modify_funs stmts
| modify_stmts stmts = error ("Illegal mutual dependencies: " ^
(Library.commas o map (labelled_name o fst)) stmts);
in
Code_Namespace.hierarchical_program labelled_name { module_alias = module_alias, reserved = reserved,
empty_nsp = (reserved, reserved), namify_module = pair, namify_stmt = namify_stmt,
cyclic_modules = false, empty_data = (), memorize_data = K I, modify_stmts = modify_stmts } program
end;
fun serialize_ml target print_ml_module print_ml_stmt with_signatures { labelled_name,
reserved_syms, includes, module_alias, class_syntax, tyco_syntax,
const_syntax, program, names } =
let
(* build program *)
val { deresolver, hierarchical_program = ml_program } =
ml_program_of_program labelled_name (Name.make_context reserved_syms) module_alias program;
(* print statements *)
fun print_stmt prefix_fragments (_, stmt) = print_ml_stmt
labelled_name tyco_syntax const_syntax (make_vars reserved_syms)
(Code_Thingol.is_cons program) (deresolver prefix_fragments) stmt
|> apfst SOME;
(* print modules *)
fun print_module prefix_fragments base _ xs =
let
val (raw_decls, body) = split_list xs;
val decls = if with_signatures then SOME (maps these raw_decls) else NONE
in (NONE, print_ml_module base decls body) end;
(* serialization *)
val p = Pretty.chunks2 (map snd includes
@ map snd (Code_Namespace.print_hierarchical {
print_module = print_module, print_stmt = print_stmt,
lift_markup = apsnd } ml_program));
fun write width NONE = writeln o format [] width
| write width (SOME p) = File.write p o format [] width;
in
Code_Target.serialization write (rpair (try (deresolver [])) ooo format) p
end;
val serializer_sml : Code_Target.serializer =
Code_Target.parse_args (Scan.optional (Args.$$$ "no_signatures" >> K false) true
>> (fn with_signatures => serialize_ml target_SML
print_sml_module print_sml_stmt with_signatures));
val serializer_ocaml : Code_Target.serializer =
Code_Target.parse_args (Scan.optional (Args.$$$ "no_signatures" >> K false) true
>> (fn with_signatures => serialize_ml target_OCaml
print_ocaml_module print_ocaml_stmt with_signatures));
(** Isar setup **)
val setup =
Code_Target.add_target
(target_SML, { serializer = serializer_sml, literals = literals_sml,
check = { env_var = "ISABELLE_PROCESS", make_destination = fn p => Path.append p (Path.explode "ROOT.ML"),
make_command = fn isabelle => fn _ => isabelle ^ " -r -q -u Pure" } })
#> Code_Target.add_target
(target_OCaml, { serializer = serializer_ocaml, literals = literals_ocaml,
check = { env_var = "EXEC_OCAML", make_destination = fn p => Path.append p (Path.explode "ROOT.ocaml"),
make_command = fn ocaml => fn _ => ocaml ^ " -w pu nums.cma ROOT.ocaml" } })
#> Code_Target.add_tyco_syntax target_SML "fun" (SOME (2, fn print_typ => fn fxy => fn [ty1, ty2] =>
brackify_infix (1, R) fxy (
print_typ (INFX (1, X)) ty1,
str "->",
print_typ (INFX (1, R)) ty2
)))
#> Code_Target.add_tyco_syntax target_OCaml "fun" (SOME (2, fn print_typ => fn fxy => fn [ty1, ty2] =>
brackify_infix (1, R) fxy (
print_typ (INFX (1, X)) ty1,
str "->",
print_typ (INFX (1, R)) ty2
)))
#> fold (Code_Target.add_reserved target_SML) ML_Syntax.reserved_names
#> fold (Code_Target.add_reserved target_SML)
["ref" (*rebinding is illegal*), "o" (*dictionary projections use it already*),
"Fail", "div", "mod" (*standard infixes*), "IntInf"]
#> 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", "Big_int"];
end; (*struct*)