package merlin-lib
Merlin's libraries
Install
Dune Dependency
Authors
Maintainers
Sources
merlin-5.5-503.tbz
sha256=67da3b34f2fea07678267309f61da4a2c6f08298de0dc59655b8d30fd8269af1
sha512=1fb3b5180d36aa82b82a319e15b743b802b6888f0dc67645baafdb4e18dfc23a7b90064ec9bc42f7424061cf8cde7f8839178d8a8537bf4596759f3ff4891873
doc/src/merlin-lib.ocaml_typing/msupport.ml.html
Source file msupport.ml
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(* {{{ COPYING *( This file is part of Merlin, an helper for ocaml editors Copyright (C) 2013 - 2015 Frédéric Bour <frederic.bour(_)lakaban.net> Thomas Refis <refis.thomas(_)gmail.com> Simon Castellan <simon.castellan(_)iuwt.fr> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. The Software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the Software. )* }}} *) open Std module RawTypeHash = Hashtbl.Make (Types.TransientTypeOps) let errors : (exn list ref * unit RawTypeHash.t) option ref = ref None let monitor_errors' = ref (ref false) let monitor_errors () = if !(!monitor_errors') then monitor_errors' := ref false; !monitor_errors' let raise_error ?(ignore_unify = false) exn = !monitor_errors' := true; match !errors with | Some (l, _) -> begin match exn with | Ctype.Unify _ when ignore_unify -> () | Ctype.Unify _ | Failure _ -> Logger.log ~section:"Typing_aux.raise_error" ~title:(Printexc.exn_slot_name exn) "%a" Logger.fmt (fun fmt -> Printexc.record_backtrace true; Format.pp_print_string fmt (Printexc.get_backtrace ())) | exn -> l := exn :: !l end | None -> raise exn let () = Msupport_parsing.msupport_raise_error := raise_error exception Resume let resume_raise exn = raise_error exn; raise Resume let catch_errors warnings caught f = let warnings' = Warnings.backup () in let errors' = !errors in Warnings.restore warnings; errors := Some (caught, RawTypeHash.create 3); Misc.try_finally f ~always:(fun () -> errors := errors'; Warnings.restore warnings') let uncatch_errors f = let_ref errors None f let erroneous_type_register te = let te = Types.Transient_expr.coerce te in match !errors with | Some (_, h) -> RawTypeHash.replace h te () | None -> () let erroneous_type_check te = let te = Types.Transient_expr.coerce te in match !errors with | Some (_, h) -> RawTypeHash.mem h te | _ -> false let rec erroneous_expr_check e = erroneous_type_check e.Typedtree.exp_type || match e.Typedtree.exp_desc with | Typedtree.Texp_ident (p, _, _) when Ident.name (Path.head p) = "_" -> true | Typedtree.Texp_apply (e', _) -> erroneous_expr_check e' | _ -> false exception Warning of Location.t * string let prerr_warning loc w = match !errors with | None -> () (*Location.print_warning loc Format.err_formatter w*) | Some (l, _) -> ( let ppf, to_string = Format.to_string () in Location.print_warning loc ppf w; match to_string () with | "" -> () | s -> l := Warning (loc, s) :: !l) let prerr_alert loc w = match !errors with | None -> () (*Location.print_warning loc Format.err_formatter w*) | Some (l, _) -> ( let ppf, to_string = Format.to_string () in Location.print_alert loc ppf w; match to_string () with | "" -> () | s -> l := Warning (loc, s) :: !l) let () = Location.register_error_of_exn (function | Warning (loc, str) -> Some (Location.error ~loc ~source:Location.Warning str) | _ -> None) let () = Location.prerr_warning_ref := prerr_warning let () = Location.prerr_alert_ref := prerr_alert let flush_saved_types () = match Cmt_format.get_saved_types () with | [] -> [] | parts -> Cmt_format.set_saved_types []; let open Ast_helper in let pconst_desc = Saved_parts.store parts in let pexp = Exp.constant { pconst_desc; pconst_loc = !default_loc } in let pstr = Str.eval pexp in [ Attr.mk Saved_parts.attribute (Parsetree.PStr [ pstr ]) ] let rec get_saved_types_from_attributes = function | [] -> [] | attr :: attrs -> let attr, str = Ast_helper.Attr.as_tuple attr in if attr = Saved_parts.attribute then let open Parsetree in begin match str with | PStr ({ pstr_desc = Pstr_eval ({ pexp_desc = Pexp_constant { pconst_desc = key; _ }; _ }, _); _ } :: _) -> Saved_parts.find key | _ -> [] end else get_saved_types_from_attributes attrs let with_warning_attribute ?warning_attribute f = match warning_attribute with | None -> f () | Some attr -> Builtin_attributes.warning_scope attr f let with_saved_types ?warning_attribute ?save_part f = let saved_types = Cmt_format.get_saved_types () in Cmt_format.set_saved_types []; try let result = with_warning_attribute ?warning_attribute f in begin match save_part with | None -> () | Some f -> Cmt_format.set_saved_types (f result :: saved_types) end; result with exn -> let saved_types' = Cmt_format.get_saved_types () in Cmt_format.set_saved_types (saved_types' @ saved_types); reraise exn let incorrect_attribute = Ast_helper.Attr.mk (Location.mknoloc "merlin.incorrect") (Parsetree.PStr []) let recovery_attributes attrs = let attrs' = incorrect_attribute :: flush_saved_types () in match attrs with | [] -> attrs' | attrs -> attrs' @ attrs
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