Source file tac2print.ml
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open Util
open Pp
open Names
open Tac2expr
open Tac2env
open Tac2ffi
let pr_tacref kn =
try Libnames.pr_qualid (Tac2env.shortest_qualid_of_ltac (TacConstant kn))
with Not_found when KNmap.mem kn (Tac2env.globals()) ->
str (ModPath.to_string (KerName.modpath kn))
++ str"." ++ Label.print (KerName.label kn)
++ str " (* local *)"
(** Utils *)
let change_kn_label kn id =
let mp = KerName.modpath kn in
KerName.make mp (Label.of_id id)
let paren p = hov 2 (str "(" ++ p ++ str ")")
let t_list =
KerName.make Tac2env.coq_prefix (Label.of_id (Id.of_string "list"))
(** Type printing *)
type typ_level =
| T5_l
| T5_r
| T2
| T1
| T0
let t_unit =
KerName.make Tac2env.coq_prefix (Label.of_id (Id.of_string "unit"))
let pr_typref kn =
Libnames.pr_qualid (Tac2env.shortest_qualid_of_type kn)
let pr_glbtype_gen pr lvl c =
let rec pr_glbtype lvl = function
| GTypVar n -> str "'" ++ str (pr n)
| GTypRef (Other kn, []) -> pr_typref kn
| GTypRef (Other kn, [t]) ->
let paren = match lvl with
| T5_r | T5_l | T2 | T1 -> fun x -> x
| T0 -> paren
in
paren (pr_glbtype T1 t ++ spc () ++ pr_typref kn)
| GTypRef (Other kn, tl) ->
let paren = match lvl with
| T5_r | T5_l | T2 | T1 -> fun x -> x
| T0 -> paren
in
paren (str "(" ++ prlist_with_sep (fun () -> str ", ") (pr_glbtype lvl) tl ++ str ")" ++ spc () ++ pr_typref kn)
| GTypArrow (t1, t2) ->
let paren = match lvl with
| T5_r -> fun x -> x
| T5_l | T2 | T1 | T0 -> paren
in
paren (pr_glbtype T5_l t1 ++ spc () ++ str "->" ++ spc () ++ pr_glbtype T5_r t2)
| GTypRef (Tuple 0, []) ->
Libnames.pr_qualid (Tac2env.shortest_qualid_of_type t_unit)
| GTypRef (Tuple _, tl) ->
let paren = match lvl with
| T5_r | T5_l -> fun x -> x
| T2 | T1 | T0 -> paren
in
paren (prlist_with_sep (fun () -> str " * ") (pr_glbtype T2) tl)
in
hov 0 (pr_glbtype lvl c)
let pr_glbtype pr c = pr_glbtype_gen pr T5_r c
let int_name () =
let vars = ref Int.Map.empty in
fun n ->
if Int.Map.mem n !vars then Int.Map.find n !vars
else
let num = Int.Map.cardinal !vars in
let base = num mod 26 in
let rem = num / 26 in
let name = String.make 1 (Char.chr (97 + base)) in
let suff = if Int.equal rem 0 then "" else string_of_int rem in
let name = name ^ suff in
let () = vars := Int.Map.add n name !vars in
name
(** Term printing *)
let pr_constructor kn =
Libnames.pr_qualid (Tac2env.shortest_qualid_of_constructor kn)
let pr_projection kn =
Libnames.pr_qualid (Tac2env.shortest_qualid_of_projection kn)
type exp_level = Tac2expr.exp_level =
| E5
| E4
| E3
| E2
| E1
| E0
let pr_atom = function
| AtmInt n -> Pp.int n
| AtmStr s -> qstring s
let pr_name = function
| Name id -> Id.print id
| Anonymous -> str "_"
let find_constructor n empty def =
let rec find n = function
| [] -> assert false
| (id, []) as ans :: rem ->
if empty then
if Int.equal n 0 then ans
else find (pred n) rem
else find n rem
| (id, _ :: _) as ans :: rem ->
if not empty then
if Int.equal n 0 then ans
else find (pred n) rem
else find n rem
in
find n def
let pr_internal_constructor tpe n is_const =
let data = match Tac2env.interp_type tpe with
| (_, GTydAlg data) -> data
| _ -> assert false
in
let (id, _) = find_constructor n is_const data.galg_constructors in
let kn = change_kn_label tpe id in
pr_constructor kn
let order_branches cbr nbr def =
let rec order cidx nidx def = match def with
| [] -> []
| (id, []) :: rem ->
let ans = order (succ cidx) nidx rem in
(id, [], cbr.(cidx)) :: ans
| (id, _ :: _) :: rem ->
let ans = order cidx (succ nidx) rem in
let (vars, e) = nbr.(nidx) in
(id, Array.to_list vars, e) :: ans
in
order 0 0 def
type ('a,'b) factorization =
| FullList of 'a list
| ListPrefix of 'a list * 'a
| Other of 'b
let pr_factorized_constructor isid pr_rec lvl tpe = function
| FullList l ->
let pr e = pr_rec E4 e in
hov 2 (str "[" ++ prlist_with_sep pr_semicolon pr (List.rev l) ++ str "]")
| ListPrefix (l,e) ->
let paren = match lvl with
| E0 | E1 | E2 -> paren
| E3 | E4 | E5 -> fun x -> x
in
let pr e = pr_rec E1 e in
let pr_cons () = spc () ++ str "::" ++ spc () in
paren (hov 2 (prlist_with_sep pr_cons pr (List.rev (e :: l))))
| Other (n,cl) ->
let _, data = Tac2env.interp_type tpe in
match data with
| GTydAlg def ->
let paren = match lvl with
| E0 ->
if List.is_empty cl then fun x -> x else paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
let cstr = pr_internal_constructor tpe n (List.is_empty cl) in
let cl = match cl with
| [] -> mt ()
| _ -> spc () ++ pr_sequence (pr_rec E0) cl
in
paren (hov 2 (cstr ++ cl))
| GTydRec def ->
let args = List.combine def cl in
let pr_arg ((id, _, _), arg) =
let kn = change_kn_label tpe id in
pr_projection kn ++ spc () ++ str ":=" ++ spc () ++ pr_rec E1 arg
in
let args = prlist_with_sep pr_semicolon pr_arg args in
hv 0 (str "{" ++ spc () ++ args ++ spc () ++ str "}")
| (GTydDef _ | GTydOpn) -> assert false
let pr_partial_pat_gen =
let open PartialPat in
let rec pr_pat lvl pat = match pat.CAst.v with
| Var x -> pr_name x
| Atom a -> pr_atom a
| As (p, x) ->
let paren = match lvl with
| E0 -> paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
paren (hv 0 (pr_pat E1 p ++ spc() ++ str "as" ++ spc () ++ Id.print x))
| Ref ({ctyp=None; cnargs=0}, _) -> str "()"
| Ref ({ctyp=None}, args) ->
let paren = match lvl with
| E0 | E1 -> paren
| E2 | E3 | E4 | E5 -> fun x -> x
in
paren (prlist_with_sep (fun () -> str "," ++ spc ()) (pr_pat E1) args)
| Ref ({cindx=Open kn}, args) ->
let paren = match lvl with
| E0 -> paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
let c = pr_constructor kn in
paren (hov 0 (c ++ spc () ++ (pr_sequence (pr_pat E0) args)))
| Ref ({ctyp=Some ctyp; cindx=Closed i}, args) ->
let factorized =
if KerName.equal ctyp t_list then
let rec factorize accu pat = match pat.CAst.v with
| Ref (_, []) -> accu, None
| Ref (_, [e; l]) -> factorize (e :: accu) l
| _ -> accu, Some pat
in
let l, e = factorize [] pat in
match e with
| None -> FullList l
| Some e -> ListPrefix (l,e)
else Other (i,args)
in
let isid id = function
| {CAst.v = Var (Name id')} -> Id.equal id id'
| _ -> false
in
pr_factorized_constructor isid pr_pat lvl ctyp factorized
| Extension {example=None} -> str "*extension*"
| Extension {example=Some a} -> pr_atom a
| Or pats ->
let paren = match lvl with
| E0 -> paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
paren (hv 0 (prlist_with_sep (fun () -> spc() ++ str "|" ++ spc()) (pr_pat E1) pats))
in
fun lvl pat -> hov 0 (pr_pat lvl pat)
let pr_partial_pat pat = pr_partial_pat_gen E5 pat
let rec partial_pat_of_glb_pat pat =
let open PartialPat in
let pat = match pat with
| GPatVar x -> Var x
| GPatAtm x -> Atom x
| GPatRef (ctor,pats) -> Ref (ctor, List.map partial_pat_of_glb_pat pats)
| GPatOr pats -> Or (List.map partial_pat_of_glb_pat pats)
| GPatAs (p,x) -> As (partial_pat_of_glb_pat p, x)
in
CAst.make pat
let pr_glb_pat pat = pr_partial_pat (partial_pat_of_glb_pat pat)
let pr_glbexpr_gen lvl c =
let rec pr_glbexpr lvl = function
| GTacAtm atm -> pr_atom atm
| GTacVar id -> Id.print id
| GTacRef gr -> pr_tacref gr
| GTacFun (nas, c) ->
let nas = pr_sequence pr_name nas in
let paren = match lvl with
| E0 | E1 | E2 | E3 | E4 -> paren
| E5 -> fun x -> x
in
paren (hov 0 (hov 2 (str "fun" ++ spc () ++ nas) ++ spc () ++ str "=>" ++ spc () ++
pr_glbexpr E5 c))
| GTacApp (c, cl) ->
let paren = match lvl with
| E0 -> paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
paren (hov 2 (pr_glbexpr E1 c ++ spc () ++ (pr_sequence (pr_glbexpr E0) cl)))
| GTacLet (mut, bnd, e) ->
let paren = match lvl with
| E0 | E1 | E2 | E3 | E4 -> paren
| E5 -> fun x -> x
in
let mut = if mut then str "rec" ++ spc () else mt () in
let pr_bnd (na, e) =
pr_name na ++ spc () ++ str ":=" ++ spc () ++ hov 2 (pr_glbexpr E5 e) ++ spc ()
in
let bnd = prlist_with_sep (fun () -> str "with" ++ spc ()) pr_bnd bnd in
paren (hv 0 (hov 2 (str "let" ++ spc () ++ mut ++ bnd ++ str "in") ++ spc () ++ pr_glbexpr E5 e))
| GTacCst (Tuple 0, _, _) -> str "()"
| GTacCst (Tuple _, _, cl) ->
let paren = match lvl with
| E0 | E1 -> paren
| E2 | E3 | E4 | E5 -> fun x -> x
in
paren (prlist_with_sep (fun () -> str "," ++ spc ()) (pr_glbexpr E1) cl)
| GTacCst (Other tpe, n, cl) ->
pr_applied_constructor lvl tpe n cl
| GTacCse (e, info, cst_br, ncst_br) ->
let e = pr_glbexpr E5 e in
let br = match info with
| Other kn ->
let def = match Tac2env.interp_type kn with
| _, GTydAlg { galg_constructors = def } -> def
| _, GTydDef _ | _, GTydRec _ | _, GTydOpn -> assert false
in
let br = order_branches cst_br ncst_br def in
let pr_branch (cstr, vars, p) =
let cstr = change_kn_label kn cstr in
let cstr = pr_constructor cstr in
let vars = match vars with
| [] -> mt ()
| _ -> spc () ++ pr_sequence pr_name vars
in
hov 4 (str "|" ++ spc () ++ hov 0 (cstr ++ vars ++ spc () ++ str "=>") ++ spc () ++
hov 2 (pr_glbexpr E5 p)) ++ spc ()
in
prlist pr_branch br
| Tuple n ->
let (vars, p) = if Int.equal n 0 then ([||], cst_br.(0)) else ncst_br.(0) in
let p = pr_glbexpr E5 p in
let vars = prvect_with_sep (fun () -> str "," ++ spc ()) pr_name vars in
hov 4 (str "|" ++ spc () ++ hov 0 (paren vars ++ spc () ++ str "=>") ++ spc () ++ p)
in
v 0 (hv 0 (str "match" ++ spc () ++ e ++ spc () ++ str "with") ++ spc () ++ br ++ spc () ++ str "end")
| GTacWth wth ->
let e = pr_glbexpr E5 wth.opn_match in
let pr_pattern c self vars p =
let self = match self with
| Anonymous -> mt ()
| Name id -> spc () ++ str "as" ++ spc () ++ Id.print id
in
hov 4 (str "|" ++ spc () ++ hov 0 (c ++ vars ++ self ++ spc () ++ str "=>") ++ spc () ++
hov 2 (pr_glbexpr E5 p)) ++ spc ()
in
let pr_branch (cstr, (self, vars, p)) =
let cstr = pr_constructor cstr in
let vars = match Array.to_list vars with
| [] -> mt ()
| vars -> spc () ++ pr_sequence pr_name vars
in
pr_pattern cstr self vars p
in
let br = prlist pr_branch (KNmap.bindings wth.opn_branch) in
let (def_as, def_p) = wth.opn_default in
let def = pr_pattern (str "_") def_as (mt ()) def_p in
let br = br ++ def in
v 0 (hv 0 (str "match" ++ spc () ++ e ++ spc () ++ str "with") ++ spc () ++ br ++ str "end")
| GTacFullMatch (e, brs) ->
let e = pr_glbexpr E5 e in
let pr_one_branch (pat,br) =
hov 4 (str "|" ++ spc() ++ hov 0 (pr_glb_pat pat ++ spc() ++ str "=>") ++ spc() ++
hov 2 (pr_glbexpr E5 br))
in
let brs = prlist_with_sep spc pr_one_branch brs in
v 0 (hv 0 (str "match" ++ spc () ++ e ++ spc () ++ str "with") ++ spc () ++ brs ++ spc() ++ str "end")
| GTacPrj (kn, e, n) ->
let def = match Tac2env.interp_type kn with
| _, GTydRec def -> def
| _, GTydDef _ | _, GTydAlg _ | _, GTydOpn -> assert false
in
let (proj, _, _) = List.nth def n in
let proj = change_kn_label kn proj in
let proj = pr_projection proj in
let e = pr_glbexpr E0 e in
hov 0 (e ++ str "." ++ paren proj)
| GTacSet (kn, e, n, r) ->
let def = match Tac2env.interp_type kn with
| _, GTydRec def -> def
| _, GTydDef _ | _, GTydAlg _ | _, GTydOpn -> assert false
in
let (proj, _, _) = List.nth def n in
let proj = change_kn_label kn proj in
let proj = pr_projection proj in
let e = pr_glbexpr E0 e in
let r = pr_glbexpr E1 r in
hov 0 (e ++ str "." ++ paren proj ++ spc () ++ str ":=" ++ spc () ++ r)
| GTacOpn (kn, cl) ->
let paren = match lvl with
| E0 -> paren
| E1 | E2 | E3 | E4 | E5 -> fun x -> x
in
let c = pr_constructor kn in
paren (hov 0 (c ++ spc () ++ (pr_sequence (pr_glbexpr E0) cl)))
| GTacExt (tag, arg) ->
let tpe = interp_ml_object tag in
let env = Global.env() in
let sigma = Evd.from_env env in
hov 0 (tpe.ml_print env sigma arg)
| GTacPrm (prm, args) ->
let args = match args with
| [] -> mt ()
| _ -> spc () ++ pr_sequence (pr_glbexpr E0) args
in
hov 0 (str "@external" ++ spc () ++ qstring prm.mltac_plugin ++ spc () ++
qstring prm.mltac_tactic ++ args)
and pr_applied_constructor lvl tpe n cl =
let factorized =
if KerName.equal tpe t_list then
let rec factorize accu = function
| GTacCst (_, 0, []) -> accu, None
| GTacCst (_, 0, [e; l]) -> factorize (e :: accu) l
| e -> accu, Some e
in
let l, e = factorize [] (GTacCst (Other tpe, n, cl)) in
match e with
| None -> FullList l
| Some e -> ListPrefix (l,e)
else Other (n,cl)
in
let isid id = function
| GTacVar id' -> Id.equal id id'
| _ -> false
in
pr_factorized_constructor isid pr_glbexpr lvl tpe factorized
in
hov 0 (pr_glbexpr lvl c)
let pr_glbexpr c =
pr_glbexpr_gen E5 c
(** Toplevel printers *)
let rec subst_type subst (t : 'a glb_typexpr) = match t with
| GTypVar id -> subst.(id)
| GTypArrow (t1, t2) -> GTypArrow (subst_type subst t1, subst_type subst t2)
| GTypRef (qid, args) ->
GTypRef (qid, List.map (fun t -> subst_type subst t) args)
let unfold kn args =
let (nparams, def) = Tac2env.interp_type kn in
match def with
| GTydDef (Some def) ->
let args = Array.of_list args in
Some (subst_type args def)
| _ -> None
let rec kind t = match t with
| GTypVar id -> GTypVar id
| GTypRef (Other kn, tl) ->
begin match unfold kn tl with
| None -> t
| Some t -> kind t
end
| GTypArrow _ | GTypRef (Tuple _, _) -> t
type val_printer =
{ val_printer : 'a. Environ.env -> Evd.evar_map -> valexpr -> 'a glb_typexpr list -> Pp.t }
let printers = ref KNmap.empty
let register_val_printer kn pr =
printers := KNmap.add kn pr !printers
open Tac2ffi
let rec pr_valexpr env sigma v t = match kind t with
| GTypVar _ -> str "<poly>"
| GTypRef (Other kn, params) ->
let pr = try Some (KNmap.find kn !printers) with Not_found -> None in
begin match pr with
| Some pr -> pr.val_printer env sigma v params
| None ->
let n, repr = Tac2env.interp_type kn in
if KerName.equal kn t_list then
pr_val_list env sigma (to_list (fun v -> repr_to valexpr v) v) (List.hd params)
else match repr with
| GTydDef None -> str "<abstr>"
| GTydDef (Some _) ->
assert false
| GTydAlg alg ->
if Valexpr.is_int v then
pr_internal_constructor kn (Tac2ffi.to_int v) true
else
let (n, args) = Tac2ffi.to_block v in
let (id, tpe) = find_constructor n false alg.galg_constructors in
let knc = change_kn_label kn id in
let args = pr_constrargs env sigma params args tpe in
hv 2 (pr_constructor knc ++ spc () ++ str "(" ++ args ++ str ")")
| GTydRec rcd ->
let (_, args) = Tac2ffi.to_block v in
pr_record env sigma params args rcd
| GTydOpn ->
begin match Tac2ffi.to_open v with
| (knc, [||]) -> pr_constructor knc
| (knc, args) ->
let data = Tac2env.interp_constructor knc in
let args = pr_constrargs env sigma params args data.Tac2env.cdata_args in
hv 2 (pr_constructor knc ++ spc () ++ str "(" ++ args ++ str ")")
end
end
| GTypArrow _ -> str "<fun>"
| GTypRef (Tuple 0, []) -> str "()"
| GTypRef (Tuple _, tl) ->
let blk = Array.to_list (snd (to_block v)) in
if List.length blk == List.length tl then
let prs = List.map2 (fun v t -> pr_valexpr env sigma v t) blk tl in
hv 2 (str "(" ++ prlist_with_sep pr_comma (fun p -> p) prs ++ str ")")
else
str "<unknown>"
and pr_constrargs env sigma params args tpe =
let subst = Array.of_list params in
let tpe = List.map (fun t -> subst_type subst t) tpe in
let args = Array.to_list args in
let args = List.combine args tpe in
prlist_with_sep pr_comma (fun (v, t) -> pr_valexpr env sigma v t) args
and pr_record env sigma params args rcd =
let subst = Array.of_list params in
let map (id, _, tpe) = (id, subst_type subst tpe) in
let rcd = List.map map rcd in
let args = Array.to_list args in
let fields = List.combine rcd args in
let pr_field ((id, t), arg) =
Id.print id ++ spc () ++ str ":=" ++ spc () ++ pr_valexpr env sigma arg t
in
str "{" ++ spc () ++ prlist_with_sep pr_semicolon pr_field fields ++ spc () ++ str "}"
and pr_val_list env sigma args tpe =
let pr v = pr_valexpr env sigma v tpe in
str "[" ++ prlist_with_sep pr_semicolon pr args ++ str "]"
let register_init n f =
let kn = KerName.make Tac2env.coq_prefix (Label.make n) in
register_val_printer kn { val_printer = fun env sigma v _ -> f env sigma v }
let () = register_init "int" begin fun _ _ n ->
let n = to_int n in
Pp.int n
end
let () = register_init "string" begin fun _ _ s ->
let s = to_string s in
Pp.quote (str s)
end
let () = register_init "ident" begin fun _ _ id ->
let id = to_ident id in
str "@" ++ Id.print id
end
let () = register_init "constr" begin fun env sigma c ->
let c = to_constr c in
let c = try Printer.pr_leconstr_env env sigma c with _ -> str "..." in
str "constr:(" ++ c ++ str ")"
end
let () = register_init "preterm" begin fun env sigma c ->
let c = to_ext val_preterm c in
let c = try Printer.pr_closed_glob_env env sigma c with _ -> str "..." in
str "preterm:(" ++ c ++ str ")"
end
let () = register_init "pattern" begin fun env sigma c ->
let c = to_pattern c in
let c = try Printer.pr_lconstr_pattern_env env sigma c with _ -> str "..." in
str "pat:(" ++ c ++ str ")"
end
let () = register_init "message" begin fun _ _ pp ->
str "message:(" ++ to_pp pp ++ str ")"
end
let () = register_init "err" begin fun _ _ e ->
let e = to_ext val_exn e in
str "err:(" ++ CErrors.iprint_no_report e ++ str ")"
end
let () =
let kn = KerName.make Tac2env.coq_prefix (Label.make "array") in
let val_printer env sigma v arg = match arg with
| [arg] ->
let (_, v) = to_block v in
str "[|" ++ spc () ++
prvect_with_sep pr_semicolon (fun a -> pr_valexpr env sigma a arg) v ++
spc () ++ str "|]"
| _ -> assert false
in
register_val_printer kn { val_printer }
(** {5 Ltac2 primitive} *)
type format =
| FmtString
| FmtInt
| FmtConstr
| FmtIdent
| FmtLiteral of string
| FmtAlpha
let val_format = Tac2dyn.Val.create "format"
exception InvalidFormat
let parse_format (s : string) : format list =
let len = String.length s in
let buf = Buffer.create len in
let rec parse i accu =
if len <= i then accu
else match s.[i] with
| '%' -> parse_argument (i + 1) accu
| _ ->
let i' = parse_literal i in
if Int.equal i i' then parse i' accu
else
let lit = Buffer.contents buf in
let () = Buffer.clear buf in
parse i' (FmtLiteral lit :: accu)
and parse_literal i =
if len <= i then i
else match s.[i] with
| '%' -> i
| c ->
let () = Buffer.add_char buf c in
parse_literal (i + 1)
and parse_argument i accu =
if len <= i then raise InvalidFormat
else match s.[i] with
| '%' -> parse (i + 1) (FmtLiteral "%" :: accu)
| 's' -> parse (i + 1) (FmtString :: accu)
| 'i' -> parse (i + 1) (FmtInt :: accu)
| 'I' -> parse (i + 1) (FmtIdent :: accu)
| 't' -> parse (i + 1) (FmtConstr :: accu)
| 'a' -> parse (i + 1) (FmtAlpha :: accu)
| _ -> raise InvalidFormat
in
parse 0 []