/usr/lib/ocaml/compiler-libs/typing/oprint.ml is in ocaml-compiler-libs 3.12.1-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* *)
(* Objective Caml *)
(* *)
(* Projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 2002 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* $Id: oprint.ml 11051 2011-05-18 15:01:07Z xclerc $ *)
open Format
open Outcometree
exception Ellipsis
let cautious f ppf arg =
try f ppf arg with
Ellipsis -> fprintf ppf "..."
let rec print_ident ppf =
function
Oide_ident s -> fprintf ppf "%s" s
| Oide_dot (id, s) -> fprintf ppf "%a.%s" print_ident id s
| Oide_apply (id1, id2) ->
fprintf ppf "%a(%a)" print_ident id1 print_ident id2
let parenthesized_ident name =
(List.mem name ["or"; "mod"; "land"; "lor"; "lxor"; "lsl"; "lsr"; "asr"])
||
(match name.[0] with
'a'..'z' | 'A'..'Z' | '\223'..'\246' | '\248'..'\255' | '_' ->
false
| _ -> true)
let value_ident ppf name =
if parenthesized_ident name then
fprintf ppf "( %s )" name
else
fprintf ppf "%s" name
(* Values *)
let valid_float_lexeme s =
let l = String.length s in
let rec loop i =
if i >= l then s ^ "." else
match s.[i] with
| '0' .. '9' | '-' -> loop (i+1)
| _ -> s
in loop 0
let float_repres f =
match classify_float f with
FP_nan -> "nan"
| FP_infinite ->
if f < 0.0 then "neg_infinity" else "infinity"
| _ ->
let float_val =
let s1 = Printf.sprintf "%.12g" f in
if f = float_of_string s1 then s1 else
let s2 = Printf.sprintf "%.15g" f in
if f = float_of_string s2 then s2 else
Printf.sprintf "%.18g" f
in valid_float_lexeme float_val
let parenthesize_if_neg ppf fmt v isneg =
if isneg then pp_print_char ppf '(';
fprintf ppf fmt v;
if isneg then pp_print_char ppf ')'
let print_out_value ppf tree =
let rec print_tree_1 ppf =
function
| Oval_constr (name, [param]) ->
fprintf ppf "@[<1>%a@ %a@]" print_ident name print_constr_param param
| Oval_constr (name, (_ :: _ as params)) ->
fprintf ppf "@[<1>%a@ (%a)@]" print_ident name
(print_tree_list print_tree_1 ",") params
| Oval_variant (name, Some param) ->
fprintf ppf "@[<2>`%s@ %a@]" name print_constr_param param
| tree -> print_simple_tree ppf tree
and print_constr_param ppf = function
| Oval_int i -> parenthesize_if_neg ppf "%i" i (i < 0)
| Oval_int32 i -> parenthesize_if_neg ppf "%lil" i (i < 0l)
| Oval_int64 i -> parenthesize_if_neg ppf "%LiL" i (i < 0L)
| Oval_nativeint i -> parenthesize_if_neg ppf "%nin" i (i < 0n)
| Oval_float f -> parenthesize_if_neg ppf "%s" (float_repres f) (f < 0.0)
| tree -> print_simple_tree ppf tree
and print_simple_tree ppf =
function
Oval_int i -> fprintf ppf "%i" i
| Oval_int32 i -> fprintf ppf "%lil" i
| Oval_int64 i -> fprintf ppf "%LiL" i
| Oval_nativeint i -> fprintf ppf "%nin" i
| Oval_float f -> fprintf ppf "%s" (float_repres f)
| Oval_char c -> fprintf ppf "%C" c
| Oval_string s ->
begin try fprintf ppf "%S" s with
Invalid_argument "String.create" -> fprintf ppf "<huge string>"
end
| Oval_list tl ->
fprintf ppf "@[<1>[%a]@]" (print_tree_list print_tree_1 ";") tl
| Oval_array tl ->
fprintf ppf "@[<2>[|%a|]@]" (print_tree_list print_tree_1 ";") tl
| Oval_constr (name, []) -> print_ident ppf name
| Oval_variant (name, None) -> fprintf ppf "`%s" name
| Oval_stuff s -> fprintf ppf "%s" s
| Oval_record fel ->
fprintf ppf "@[<1>{%a}@]" (cautious (print_fields true)) fel
| Oval_ellipsis -> raise Ellipsis
| Oval_printer f -> f ppf
| Oval_tuple tree_list ->
fprintf ppf "@[<1>(%a)@]" (print_tree_list print_tree_1 ",") tree_list
| tree -> fprintf ppf "@[<1>(%a)@]" (cautious print_tree_1) tree
and print_fields first ppf =
function
[] -> ()
| (name, tree) :: fields ->
if not first then fprintf ppf ";@ ";
fprintf ppf "@[<1>%a@ =@ %a@]" print_ident name (cautious print_tree_1)
tree;
print_fields false ppf fields
and print_tree_list print_item sep ppf tree_list =
let rec print_list first ppf =
function
[] -> ()
| tree :: tree_list ->
if not first then fprintf ppf "%s@ " sep;
print_item ppf tree;
print_list false ppf tree_list
in
cautious (print_list true) ppf tree_list
in
cautious print_tree_1 ppf tree
let out_value = ref print_out_value
(* Types *)
let rec print_list_init pr sep ppf =
function
[] -> ()
| a :: l -> sep ppf; pr ppf a; print_list_init pr sep ppf l
let rec print_list pr sep ppf =
function
[] -> ()
| [a] -> pr ppf a
| a :: l -> pr ppf a; sep ppf; print_list pr sep ppf l
let pr_present =
print_list (fun ppf s -> fprintf ppf "`%s" s) (fun ppf -> fprintf ppf "@ ")
let pr_vars =
print_list (fun ppf s -> fprintf ppf "'%s" s) (fun ppf -> fprintf ppf "@ ")
let rec print_out_type ppf =
function
| Otyp_alias (ty, s) ->
fprintf ppf "@[%a@ as '%s@]" print_out_type ty s
| Otyp_poly (sl, ty) ->
fprintf ppf "@[<hov 2>%a.@ %a@]"
pr_vars sl
print_out_type ty
| ty ->
print_out_type_1 ppf ty
and print_out_type_1 ppf =
function
Otyp_arrow (lab, ty1, ty2) ->
fprintf ppf "@[%s%a ->@ %a@]" (if lab <> "" then lab ^ ":" else "")
print_out_type_2 ty1 print_out_type_1 ty2
| ty -> print_out_type_2 ppf ty
and print_out_type_2 ppf =
function
Otyp_tuple tyl ->
fprintf ppf "@[<0>%a@]" (print_typlist print_simple_out_type " *") tyl
| ty -> print_simple_out_type ppf ty
and print_simple_out_type ppf =
function
Otyp_class (ng, id, tyl) ->
fprintf ppf "@[%a%s#%a@]" print_typargs tyl (if ng then "_" else "")
print_ident id
| Otyp_constr (id, tyl) ->
fprintf ppf "@[%a%a@]" print_typargs tyl print_ident id
| Otyp_object (fields, rest) ->
fprintf ppf "@[<2>< %a >@]" (print_fields rest) fields
| Otyp_stuff s -> fprintf ppf "%s" s
| Otyp_var (ng, s) -> fprintf ppf "'%s%s" (if ng then "_" else "") s
| Otyp_variant (non_gen, row_fields, closed, tags) ->
let print_present ppf =
function
None | Some [] -> ()
| Some l -> fprintf ppf "@;<1 -2>> @[<hov>%a@]" pr_present l
in
let print_fields ppf =
function
Ovar_fields fields ->
print_list print_row_field (fun ppf -> fprintf ppf "@;<1 -2>| ")
ppf fields
| Ovar_name (id, tyl) ->
fprintf ppf "@[%a%a@]" print_typargs tyl print_ident id
in
fprintf ppf "%s[%s@[<hv>@[<hv>%a@]%a ]@]" (if non_gen then "_" else "")
(if closed then if tags = None then " " else "< "
else if tags = None then "> " else "? ")
print_fields row_fields
print_present tags
| Otyp_alias _ | Otyp_poly _ | Otyp_arrow _ | Otyp_tuple _ as ty ->
fprintf ppf "@[<1>(%a)@]" print_out_type ty
| Otyp_abstract | Otyp_sum _ | Otyp_record _ | Otyp_manifest (_, _) -> ()
| Otyp_module (p, n, tyl) ->
fprintf ppf "@[<1>(module %s" p;
let first = ref true in
List.iter2
(fun s t ->
let sep = if !first then (first := false; "with") else "and" in
fprintf ppf " %s type %s = %a" sep s print_out_type t
)
n tyl;
fprintf ppf ")@]"
and print_fields rest ppf =
function
[] ->
begin match rest with
Some non_gen -> fprintf ppf "%s.." (if non_gen then "_" else "")
| None -> ()
end
| [s, t] ->
fprintf ppf "%s : %a" s print_out_type t;
begin match rest with
Some _ -> fprintf ppf ";@ "
| None -> ()
end;
print_fields rest ppf []
| (s, t) :: l ->
fprintf ppf "%s : %a;@ %a" s print_out_type t (print_fields rest) l
and print_row_field ppf (l, opt_amp, tyl) =
let pr_of ppf =
if opt_amp then fprintf ppf " of@ &@ "
else if tyl <> [] then fprintf ppf " of@ "
else fprintf ppf ""
in
fprintf ppf "@[<hv 2>`%s%t%a@]" l pr_of (print_typlist print_out_type " &")
tyl
and print_typlist print_elem sep ppf =
function
[] -> ()
| [ty] -> print_elem ppf ty
| ty :: tyl ->
fprintf ppf "%a%s@ %a" print_elem ty sep (print_typlist print_elem sep)
tyl
and print_typargs ppf =
function
[] -> ()
| [ty1] -> fprintf ppf "%a@ " print_simple_out_type ty1
| tyl -> fprintf ppf "@[<1>(%a)@]@ " (print_typlist print_out_type ",") tyl
let out_type = ref print_out_type
(* Class types *)
let type_parameter ppf (ty, (co, cn)) =
fprintf ppf "%s'%s" (if not cn then "+" else if not co then "-" else "")
(*if co then if cn then "!" else "+" else if cn then "-" else "?"*)
ty
let print_out_class_params ppf =
function
[] -> ()
| tyl ->
fprintf ppf "@[<1>[%a]@]@ "
(print_list type_parameter (fun ppf -> fprintf ppf ", "))
tyl
let rec print_out_class_type ppf =
function
Octy_constr (id, tyl) ->
let pr_tyl ppf =
function
[] -> ()
| tyl ->
fprintf ppf "@[<1>[%a]@]@ " (print_typlist !out_type ",") tyl
in
fprintf ppf "@[%a%a@]" pr_tyl tyl print_ident id
| Octy_fun (lab, ty, cty) ->
fprintf ppf "@[%s%a ->@ %a@]" (if lab <> "" then lab ^ ":" else "")
print_out_type_2 ty print_out_class_type cty
| Octy_signature (self_ty, csil) ->
let pr_param ppf =
function
Some ty -> fprintf ppf "@ @[(%a)@]" !out_type ty
| None -> ()
in
fprintf ppf "@[<hv 2>@[<2>object%a@]@ %a@;<1 -2>end@]" pr_param self_ty
(print_list print_out_class_sig_item (fun ppf -> fprintf ppf "@ "))
csil
and print_out_class_sig_item ppf =
function
Ocsg_constraint (ty1, ty2) ->
fprintf ppf "@[<2>constraint %a =@ %a@]" !out_type ty1
!out_type ty2
| Ocsg_method (name, priv, virt, ty) ->
fprintf ppf "@[<2>method %s%s%s :@ %a@]"
(if priv then "private " else "") (if virt then "virtual " else "")
name !out_type ty
| Ocsg_value (name, mut, vr, ty) ->
fprintf ppf "@[<2>val %s%s%s :@ %a@]"
(if mut then "mutable " else "")
(if vr then "virtual " else "")
name !out_type ty
let out_class_type = ref print_out_class_type
(* Signature *)
let out_module_type = ref (fun _ -> failwith "Oprint.out_module_type")
let out_sig_item = ref (fun _ -> failwith "Oprint.out_sig_item")
let out_signature = ref (fun _ -> failwith "Oprint.out_signature")
let rec print_out_module_type ppf =
function
Omty_abstract -> ()
| Omty_functor (name, mty_arg, mty_res) ->
fprintf ppf "@[<2>functor@ (%s : %a) ->@ %a@]" name
print_out_module_type mty_arg print_out_module_type mty_res
| Omty_ident id -> fprintf ppf "%a" print_ident id
| Omty_signature sg ->
fprintf ppf "@[<hv 2>sig@ %a@;<1 -2>end@]" !out_signature sg
and print_out_signature ppf =
function
[] -> ()
| [item] -> !out_sig_item ppf item
| item :: items ->
fprintf ppf "%a@ %a" !out_sig_item item print_out_signature items
and print_out_sig_item ppf =
function
Osig_class (vir_flag, name, params, clt, rs) ->
fprintf ppf "@[<2>%s%s@ %a%s@ :@ %a@]"
(if rs = Orec_next then "and" else "class")
(if vir_flag then " virtual" else "") print_out_class_params params
name !out_class_type clt
| Osig_class_type (vir_flag, name, params, clt, rs) ->
fprintf ppf "@[<2>%s%s@ %a%s@ =@ %a@]"
(if rs = Orec_next then "and" else "class type")
(if vir_flag then " virtual" else "") print_out_class_params params
name !out_class_type clt
| Osig_exception (id, tyl) ->
fprintf ppf "@[<2>exception %a@]" print_out_constr (id, tyl)
| Osig_modtype (name, Omty_abstract) ->
fprintf ppf "@[<2>module type %s@]" name
| Osig_modtype (name, mty) ->
fprintf ppf "@[<2>module type %s =@ %a@]" name !out_module_type mty
| Osig_module (name, mty, rs) ->
fprintf ppf "@[<2>%s %s :@ %a@]"
(match rs with Orec_not -> "module"
| Orec_first -> "module rec"
| Orec_next -> "and")
name !out_module_type mty
| Osig_type(td, rs) ->
print_out_type_decl
(if rs = Orec_next then "and" else "type")
ppf td
| Osig_value (name, ty, prims) ->
let kwd = if prims = [] then "val" else "external" in
let pr_prims ppf =
function
[] -> ()
| s :: sl ->
fprintf ppf "@ = \"%s\"" s;
List.iter (fun s -> fprintf ppf "@ \"%s\"" s) sl
in
fprintf ppf "@[<2>%s %a :@ %a%a@]" kwd value_ident name !out_type
ty pr_prims prims
and print_out_type_decl kwd ppf (name, args, ty, priv, constraints) =
let print_constraints ppf params =
List.iter
(fun (ty1, ty2) ->
fprintf ppf "@ @[<2>constraint %a =@ %a@]" !out_type ty1
!out_type ty2)
params
in
let type_defined ppf =
match args with
[] -> fprintf ppf "%s" name
| [arg] -> fprintf ppf "@[%a@ %s@]" type_parameter arg name
| _ ->
fprintf ppf "@[(@[%a)@]@ %s@]"
(print_list type_parameter (fun ppf -> fprintf ppf ",@ ")) args name
in
let print_manifest ppf =
function
Otyp_manifest (ty, _) -> fprintf ppf " =@ %a" !out_type ty
| _ -> ()
in
let print_name_args ppf =
fprintf ppf "%s %t%a" kwd type_defined print_manifest ty
in
let ty =
match ty with
Otyp_manifest (_, ty) -> ty
| _ -> ty
in
let print_private ppf = function
Asttypes.Private -> fprintf ppf " private"
| Asttypes.Public -> () in
let rec print_out_tkind ppf = function
| Otyp_abstract -> ()
| Otyp_record lbls ->
fprintf ppf " =%a {%a@;<1 -2>}"
print_private priv
(print_list_init print_out_label (fun ppf -> fprintf ppf "@ ")) lbls
| Otyp_sum constrs ->
fprintf ppf " =%a@;<1 2>%a"
print_private priv
(print_list print_out_constr (fun ppf -> fprintf ppf "@ | ")) constrs
| ty ->
fprintf ppf " =%a@;<1 2>%a"
print_private priv
!out_type ty
in
fprintf ppf "@[<2>@[<hv 2>%t%a@]%a@]"
print_name_args
print_out_tkind ty
print_constraints constraints
and print_out_constr ppf (name, tyl) =
match tyl with
[] -> fprintf ppf "%s" name
| _ ->
fprintf ppf "@[<2>%s of@ %a@]" name
(print_typlist print_simple_out_type " *") tyl
and print_out_label ppf (name, mut, arg) =
fprintf ppf "@[<2>%s%s :@ %a@];" (if mut then "mutable " else "") name
!out_type arg
let _ = out_module_type := print_out_module_type
let _ = out_signature := print_out_signature
let _ = out_sig_item := print_out_sig_item
(* Phrases *)
let print_out_exception ppf exn outv =
match exn with
Sys.Break -> fprintf ppf "Interrupted.@."
| Out_of_memory -> fprintf ppf "Out of memory during evaluation.@."
| Stack_overflow ->
fprintf ppf "Stack overflow during evaluation (looping recursion?).@."
| _ -> fprintf ppf "@[Exception:@ %a.@]@." !out_value outv
let rec print_items ppf =
function
[] -> ()
| (tree, valopt) :: items ->
begin match valopt with
Some v ->
fprintf ppf "@[<2>%a =@ %a@]" !out_sig_item tree
!out_value v
| None -> fprintf ppf "@[%a@]" !out_sig_item tree
end;
if items <> [] then fprintf ppf "@ %a" print_items items
let print_out_phrase ppf =
function
Ophr_eval (outv, ty) ->
fprintf ppf "@[- : %a@ =@ %a@]@." !out_type ty !out_value outv
| Ophr_signature [] -> ()
| Ophr_signature items -> fprintf ppf "@[<v>%a@]@." print_items items
| Ophr_exception (exn, outv) -> print_out_exception ppf exn outv
let out_phrase = ref print_out_phrase
|