Implement the new codelens.forNestedBindings setting

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+- Add `ocaml.server.codelens.forNestedBindings` setting to control whether
+  CodeLens should be displayed for nested bindings. Defaults to `false`,
+  showing CodeLens only for top-level bindings.
+  - ⚠️ This is a **breaking change** for users who have already used
+    `ocaml.server.codelens`. The existing `ocaml.server.codelens` setting has
+    been renamed to `ocaml.server.codelens.enable`. (#1990)
+
 ## 1.32.4
 
 - Fix editor focus condition for interface file keybindings. Previously,

package.json

@@ -333,11 +333,16 @@
           "default": [],
           "markdownDescription": "Extra arguments to pass to ocamllsp."
         },
-        "ocaml.server.codelens": {
+        "ocaml.server.codelens.enable": {
           "type": "boolean",
           "default": true,
           "markdownDescription": "Enable/Disable codelens"
         },
+        "ocaml.server.codelens.forNestedBindings": {
+          "type": "boolean",
+          "default": false,
+          "markdownDescription": "Enable/Disable codelens for nested let bindings"
+        },
         "ocaml.server.extendedHover": {
           "type": "boolean",
           "default": false,

src/extension_instance.ml

@@ -12,6 +12,7 @@ type t =
   ; sandbox_info : StatusBarItem.t
   ; ast_editor_state : Ast_editor_state.t
   ; mutable codelens : bool option
+  ; mutable codelens_for_nested_bindings : bool option
   ; mutable extended_hover : bool option
   ; mutable standard_hover : bool option
   ; mutable dune_diagnostics : bool option
@@ -26,14 +27,19 @@ let ocaml_version_exn t = Option.value_exn t.ocaml_version
 
 let send_configuration
       ~codelens
+      ~codelens_for_nested_bindings
       ~extended_hover
       ~standard_hover
       ~dune_diagnostics
       ~syntax_documentation
       client
   =
   let codelens =
-    Option.map codelens ~f:(fun enable -> Ocaml_lsp.OcamllspSettingEnable.create ~enable)
+    Option.map codelens ~f:(fun enable ->
+      Ocaml_lsp.OcamllspSettingCodeLens.create
+        ?forNestedBindings:codelens_for_nested_bindings
+        ~enable
+        ())
   in
   let extendedHover =
     Option.map extended_hover ~f:(fun enable ->
@@ -73,13 +79,16 @@ let send_configuration
 let set_configuration
       t
       ?codelens
+      ?codelens_for_nested_bindings
       ?extended_hover
       ?standard_hover
       ?dune_diagnostics
       ?syntax_documentation
       ()
   =
   Option.iter codelens ~f:(fun codelens -> t.codelens <- codelens);
+  Option.iter codelens_for_nested_bindings ~f:(fun codelens_for_nested_bindings ->
+    t.codelens_for_nested_bindings <- codelens_for_nested_bindings);
   Option.iter extended_hover ~f:(fun extended_hover -> t.extended_hover <- extended_hover);
   Option.iter standard_hover ~f:(fun standard_hover -> t.standard_hover <- standard_hover);
   Option.iter dune_diagnostics ~f:(fun dune_diagnostics ->
@@ -91,6 +100,7 @@ let set_configuration
   | Some (client, (_ : Ocaml_lsp.t)) ->
     send_configuration
       ~codelens:t.codelens
+      ~codelens_for_nested_bindings:t.codelens_for_nested_bindings
       ~extended_hover:t.extended_hover
       ~standard_hover:t.standard_hover
       ~dune_diagnostics:t.dune_diagnostics
@@ -267,6 +277,7 @@ end = struct
         send_configuration
           client
           ~codelens:t.codelens
+          ~codelens_for_nested_bindings:t.codelens_for_nested_bindings
           ~extended_hover:t.extended_hover
           ~standard_hover:t.standard_hover
           ~dune_diagnostics:t.dune_diagnostics
@@ -359,6 +370,7 @@ let make () =
   ; ast_editor_state
   ; documentation_server = None
   ; codelens = None
+  ; codelens_for_nested_bindings = None
   ; extended_hover = None
   ; standard_hover = None
   ; dune_diagnostics = None

src/extension_instance.mli

@@ -25,6 +25,7 @@ val suggest_to_run_dune_pkg_lock : unit -> unit
 val set_configuration
   :  t
   -> ?codelens:bool option
+  -> ?codelens_for_nested_bindings:bool option
   -> ?extended_hover:bool option
   -> ?standard_hover:bool option
   -> ?dune_diagnostics:bool option

src/ocaml_lsp.ml

@@ -10,19 +10,29 @@ module OcamllspSettingEnable = struct
       val create : enable:bool -> t [@@js.builder]]
 end
 
+module OcamllspSettingCodeLens = struct
+  include Interface.Make ()
+
+  include
+    [%js:
+      val enable : t -> bool or_undefined [@@js.get]
+      val forNestedBindings : t -> bool or_undefined [@@js.get]
+      val create : ?forNestedBindings:bool -> enable:bool -> unit -> t [@@js.builder]]
+end
+
 module OcamllspSettings = struct
   include Interface.Make ()
 
   include
     [%js:
-      val codelens : t -> OcamllspSettingEnable.t or_undefined [@@js.get]
+      val codelens : t -> OcamllspSettingCodeLens.t or_undefined [@@js.get]
       val extendedHover : t -> OcamllspSettingEnable.t or_undefined [@@js.get]
       val standardHover : t -> OcamllspSettingEnable.t or_undefined [@@js.get]
       val duneDiagnostics : t -> OcamllspSettingEnable.t or_undefined [@@js.get]
       val syntaxDocumentation : t -> OcamllspSettingEnable.t or_undefined [@@js.get]
 
       val create
-        :  ?codelens:OcamllspSettingEnable.t
+        :  ?codelens:OcamllspSettingCodeLens.t
         -> ?extendedHover:OcamllspSettingEnable.t
         -> ?standardHover:OcamllspSettingEnable.t
         -> ?duneDiagnostics:OcamllspSettingEnable.t

src/ocaml_lsp.mli

@@ -20,17 +20,25 @@ module OcamllspSettingEnable : sig
   val create : enable:bool -> t
 end
 
+module OcamllspSettingCodeLens : sig
+  include Ojs.T
+
+  val enable : t -> bool option
+  val forNestedBindings : t -> bool option
+  val create : ?forNestedBindings:bool -> enable:bool -> unit -> t
+end
+
 module OcamllspSettings : sig
   include Ojs.T
 
-  val codelens : t -> OcamllspSettingEnable.t option
+  val codelens : t -> OcamllspSettingCodeLens.t option
   val extendedHover : t -> OcamllspSettingEnable.t option
   val standardHover : t -> OcamllspSettingEnable.t option
   val duneDiagnostics : t -> OcamllspSettingEnable.t option
   val syntaxDocumentation : t -> OcamllspSettingEnable.t option
 
   val create
-    :  codelens:OcamllspSettingEnable.t option
+    :  codelens:OcamllspSettingCodeLens.t option
     -> extendedHover:OcamllspSettingEnable.t option
     -> standardHover:OcamllspSettingEnable.t option
     -> duneDiagnostics:OcamllspSettingEnable.t option

src/settings.ml

@@ -120,11 +120,19 @@ let server_args_setting =
 let server_codelens_setting =
   create_setting
     ~scope:ConfigurationTarget.Workspace
-    ~key:"ocaml.server.codelens"
+    ~key:"ocaml.server.codelens.enable"
     ~of_json:Jsonoo.Decode.bool
     ~to_json:Jsonoo.Encode.bool
 ;;
 
+let server_codelens_for_nested_bindings_setting =
+  create_setting
+    ~scope:ConfigurationTarget.Workspace
+    ~key:"ocaml.server.codelens"
+    ~of_json:Jsonoo.Decode.(try_optional (field "forNestedBindings" bool))
+    ~to_json:Jsonoo.Encode.(nullable bool)
+;;
+
 let server_extendedHover_setting =
   create_setting
     ~scope:ConfigurationTarget.Workspace

src/settings.mli

@@ -36,6 +36,7 @@ val substitute_workspace_vars : string -> string
 val server_extraEnv : unit -> string Interop.Dict.t option
 val server_args_setting : string list setting
 val server_codelens_setting : bool setting
+val server_codelens_for_nested_bindings_setting : bool option setting
 val server_extendedHover_setting : bool setting
 val server_duneDiagnostics_setting : bool setting
 val server_syntaxDocumentation_setting : bool setting

src/vscode_ocaml_platform.ml

@@ -21,12 +21,16 @@ let notify_configuration_changes instance =
   Workspace.onDidChangeConfiguration
     ~listener:(fun _event ->
       let codelens = Settings.(get server_codelens_setting) in
+      let codelens_for_nested_bindings =
+        Settings.(get server_codelens_for_nested_bindings_setting)
+      in
       let extended_hover = Settings.(get server_extendedHover_setting) in
       let dune_diagnostics = Settings.(get server_duneDiagnostics_setting) in
       let syntax_documentation = Settings.(get server_syntaxDocumentation_setting) in
       Extension_instance.set_configuration
         instance
         ~codelens
+        ?codelens_for_nested_bindings
         ~extended_hover
         ~dune_diagnostics
         ~syntax_documentation