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Allow request handlers to return Response.Errors

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Christoph M. Wintersteiger 2026-03-24 17:28:03 +00:00
parent 1b4c56b134
commit 81f1fa0023
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GPG key ID: 50B5FDA31455CFF3
2 changed files with 25 additions and 17 deletions
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5
src/jsonrpc2.ml
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@ -228,10 +228,7 @@ module Make (IO : IO) : S with module IO = IO = struct
| Ok reply ->
let reply_json = Lsp.Client_request.yojson_of_result r reply in
Jsonrpc.Response.ok id reply_json
| Error message ->
Jsonrpc.Response.error id
(Jsonrpc.Response.Error.make
~code:Jsonrpc.Response.Error.Code.InternalError ~message ())
| Error err -> Jsonrpc.Response.error id err
in
send_response self response

25
src/server.ml
View file

@ -61,7 +61,7 @@ module Make (IO : IO) = struct
server_request:send_request ->
id:Req_id.t ->
'a Lsp.Client_request.t ->
('a, string) result IO.t
('a, Jsonrpc.Response.Error.t) result IO.t
(** Method called to handle client requests.
@param notify_back
an object used to reply to the client, send progress messages,
@ -379,21 +379,31 @@ module Make (IO : IO) = struct
server_request:_ ->
id:Req_id.t ->
r Lsp.Client_request.t ->
(r, string) result IO.t =
(r, Jsonrpc.Response.Error.t) result IO.t =
fun ~notify_back ~server_request ~id (r : _ Lsp.Client_request.t) ->
Trace.with_span ~__FILE__ ~__LINE__ "linol.on-request"
@@ fun _sp : (r, string) result IO.t ->
@@ fun _sp : (r, Jsonrpc.Response.Error.t) result IO.t ->
(* handler to catch all errors *)
let try_catch : (unit -> (r, _) result IO.t) -> (r, _) result IO.t =
let try_catch :
(unit -> (r, Jsonrpc.Response.Error.t) result IO.t) ->
(r, Jsonrpc.Response.Error.t) result IO.t =
fun f ->
IO.catch f (fun exn bt ->
IO.catch f (fun (exn : exn) bt ->
match exn with
| Linol_jsonrpc.Jsonrpc.Response.Error.E e ->
IO.return @@ Error e
| _ ->
let msg =
spf "LSP request handler failed with %s\n%s"
(Printexc.to_string exn)
(Printexc.raw_backtrace_to_string bt)
in
Log.err (fun k -> k "%s" msg);
IO.return @@ Error msg)
IO.return
@@ Error
(Jsonrpc.Response.Error.make
~code:Jsonrpc.Response.Error.Code.InternalError
~message:msg ()))
in
try_catch @@ fun () ->
@ -737,7 +747,8 @@ module Make (IO : IO) = struct
in
let new_doc : Lsp.Text_document.t =
Lsp.Text_document.apply_content_changes old_doc c
Lsp.Text_document.apply_content_changes ~version:doc.version
old_doc c
in
let new_st : doc_state =