Support inline record fields in doc extraction

analysis/src/CompletionBackEnd.ml

@@ -3,7 +3,18 @@ open SharedTypes
 let showConstructor {Constructor.cname = {txt}; args; res} =
   txt
   ^ (match args with
-    | Args [] | InlineRecord _ -> ""
+    | Args [] -> ""
+    | InlineRecord fields ->
+      "({"
+      ^ (fields
+        |> List.map (fun (field : field) ->
+               Printf.sprintf "%s%s: %s" field.fname.txt
+                 (if field.optional then "?" else "")
+                 (Shared.typeToString
+                    (if field.optional then Utils.unwrapIfOption field.typ
+                     else field.typ)))
+        |> String.concat ", ")
+      ^ "})"
     | Args args ->
       "("
       ^ (args

analysis/src/DocExtraction.ml

@@ -6,11 +6,14 @@ type fieldDoc = {
   deprecated: string option;
 }
 
+type constructorPayload = InlineRecord of {fieldDocs: fieldDoc list}
+
 type constructorDoc = {
   constructorName: string;
   docstrings: string list;
   signature: string;
   deprecated: string option;
+  items: constructorPayload option;
 }
 
 type docItemDetail =
@@ -54,6 +57,35 @@ let stringifyDocstrings docstrings =
   |> List.map (fun docstring -> docstring |> String.trim |> wrapInQuotes)
   |> array
 
+let stringifyFieldDoc ~indentation (fieldDoc : fieldDoc) =
+  let open Protocol in
+  stringifyObject ~indentation:(indentation + 1)
+    [
+      ("name", Some (wrapInQuotes fieldDoc.fieldName));
+      ( "deprecated",
+        match fieldDoc.deprecated with
+        | Some d -> Some (wrapInQuotes d)
+        | None -> None );
+      ("optional", Some (string_of_bool fieldDoc.optional));
+      ("docstrings", Some (stringifyDocstrings fieldDoc.docstrings));
+      ("signature", Some (wrapInQuotes fieldDoc.signature));
+    ]
+
+let stringifyConstructorPayload ~indentation
+    (constructorPayload : constructorPayload) =
+  let open Protocol in
+  match constructorPayload with
+  | InlineRecord {fieldDocs} ->
+    stringifyObject ~indentation:(indentation + 1)
+      [
+        ("kind", Some (wrapInQuotes "inlineRecord"));
+        ( "fields",
+          Some
+            (fieldDocs
+            |> List.map (stringifyFieldDoc ~indentation:(indentation + 1))
+            |> array) );
+      ]
+
 let stringifyDetail ?(indentation = 0) (detail : docItemDetail) =
   let open Protocol in
   match detail with
@@ -62,22 +94,8 @@ let stringifyDetail ?(indentation = 0) (detail : docItemDetail) =
       [
         ("kind", Some (wrapInQuotes "record"));
         ( "items",
-          Some
-            (fieldDocs
-            |> List.map (fun fieldDoc ->
-                   stringifyObject ~indentation:(indentation + 1)
-                     [
-                       ("name", Some (wrapInQuotes fieldDoc.fieldName));
-                       ( "deprecated",
-                         match fieldDoc.deprecated with
-                         | Some d -> Some (wrapInQuotes d)
-                         | None -> None );
-                       ("optional", Some (string_of_bool fieldDoc.optional));
-                       ( "docstrings",
-                         Some (stringifyDocstrings fieldDoc.docstrings) );
-                       ("signature", Some (wrapInQuotes fieldDoc.signature));
-                     ])
-            |> array) );
+          Some (fieldDocs |> List.map (stringifyFieldDoc ~indentation) |> array)
+        );
       ]
   | Variant {constructorDocs} ->
     stringifyObject ~startOnNewline:true ~indentation
@@ -100,6 +118,14 @@ let stringifyDetail ?(indentation = 0) (detail : docItemDetail) =
                          Some (stringifyDocstrings constructorDoc.docstrings) );
                        ( "signature",
                          Some (wrapInQuotes constructorDoc.signature) );
+                       ( "payload",
+                         match constructorDoc.items with
+                         | None -> None
+                         | Some constructorPayload ->
+                           Some
+                             (stringifyConstructorPayload
+                                ~indentation:(indentation + 1)
+                                constructorPayload) );
                      ])
             |> array) );
       ]
@@ -145,6 +171,7 @@ let rec stringifyDocItem ?(indentation = 0) ~originalEnv (item : docItem) =
         ("id", Some (wrapInQuotes m.id));
         ("name", Some (wrapInQuotes m.name));
         ("kind", Some (wrapInQuotes "module"));
+        ("docstrings", Some (stringifyDocstrings m.docstring));
         ( "items",
           Some
             (m.items
@@ -185,24 +212,20 @@ and stringifyDocsForModule ?(indentation = 0) ~originalEnv (d : docsForModule) =
           |> array) );
     ]
 
+let fieldToFieldDoc (field : SharedTypes.field) : fieldDoc =
+  {
+    fieldName = field.fname.txt;
+    docstrings = field.docstring;
+    optional = field.optional;
+    signature = Shared.typeToString field.typ;
+    deprecated = field.deprecated;
+  }
+
 let typeDetail typ ~env ~full =
   let open SharedTypes in
   match TypeUtils.extractTypeFromResolvedType ~env ~full typ with
   | Some (Trecord {fields}) ->
-    Some
-      (Record
-         {
-           fieldDocs =
-             fields
-             |> List.map (fun (field : field) ->
-                    {
-                      fieldName = field.fname.txt;
-                      docstrings = field.docstring;
-                      optional = field.optional;
-                      signature = Shared.typeToString field.typ;
-                      deprecated = field.deprecated;
-                    });
-         })
+    Some (Record {fieldDocs = fields |> List.map fieldToFieldDoc})
   | Some (Tvariant {constructors}) ->
     Some
       (Variant
@@ -215,6 +238,13 @@ let typeDetail typ ~env ~full =
                       docstrings = c.docstring;
                       signature = CompletionBackEnd.showConstructor c;
                       deprecated = c.deprecated;
+                      items =
+                        (match c.args with
+                        | InlineRecord fields ->
+                          Some
+                            (InlineRecord
+                               {fieldDocs = fields |> List.map fieldToFieldDoc})
+                        | _ -> None);
                     });
          })
   | _ -> None
@@ -312,7 +342,9 @@ let extractDocs ~path ~debug =
                           id;
                           name = item.name;
                           items;
-                          docstring = item.docstring @ internalDocstrings |> List.map String.trim;
+                          docstring =
+                            item.docstring @ internalDocstrings
+                            |> List.map String.trim;
                         })
                  | Module (Structure m) ->
                    (* module Whatever = {} in res or module Whatever: {} in resi. *)

analysis/tests/src/DocExtractionRes.res

@@ -49,7 +49,12 @@ module AnotherModule = {
   let isGoodStatus = (status: SomeInnerModule.status) => status == Stopped
 
   /** Trying how it looks with an inline record in a variant. */
-  type someVariantWithInlineRecords = | /** This has inline records...*/ SomeStuff({offline: bool})
+  type someVariantWithInlineRecords =
+    | /** This has inline records...*/
+    SomeStuff({
+        offline: bool,
+        /** Is the user online? */ online?: bool,
+      })
 
   open ReactDOM
 

analysis/tests/src/expected/DocExtraction2.res.txt

@@ -24,6 +24,7 @@ preferring found resi file for impl: src/DocExtraction2.resi
     "id": "DocExtraction2.InnerModule",
     "name": "InnerModule",
     "kind": "module",
+    "docstrings": [],
     "items": [
     {
       "id": "DocExtraction2.InnerModule.t",

analysis/tests/src/expected/DocExtraction2.resi.txt

@@ -23,6 +23,7 @@ extracting docs for src/DocExtraction2.resi
     "id": "DocExtraction2.InnerModule",
     "name": "InnerModule",
     "kind": "module",
+    "docstrings": [],
     "items": [
     {
       "id": "DocExtraction2.InnerModule.t",

analysis/tests/src/expected/DocExtractionRes.res.txt

@@ -52,6 +52,7 @@ extracting docs for src/DocExtractionRes.res
     "id": "DocExtractionRes.SomeInnerModule",
     "name": "SomeInnerModule",
     "kind": "module",
+    "docstrings": ["Another module level docstring here."],
     "items": [
     {
       "id": "DocExtractionRes.SomeInnerModule.status",
@@ -99,6 +100,7 @@ extracting docs for src/DocExtractionRes.res
     "id": "DocExtractionRes.AnotherModule",
     "name": "AnotherModule",
     "kind": "module",
+    "docstrings": ["Mighty fine module here too!"],
     "items": [
     {
       "id": "DocExtractionRes.LinkedModule",
@@ -125,7 +127,7 @@ extracting docs for src/DocExtractionRes.res
       "id": "DocExtractionRes.AnotherModule.someVariantWithInlineRecords",
       "kind": "type",
       "name": "someVariantWithInlineRecords",
-      "signature": "type someVariantWithInlineRecords =\n  | SomeStuff({offline: bool})",
+      "signature": "type someVariantWithInlineRecords =\n  | SomeStuff({offline: bool, online?: bool})",
       "docstrings": ["Trying how it looks with an inline record in a variant."],
       "detail": 
       {
@@ -134,7 +136,21 @@ extracting docs for src/DocExtractionRes.res
         {
           "name": "SomeStuff",
           "docstrings": ["This has inline records..."],
-          "signature": "SomeStuff"
+          "signature": "SomeStuff({offline: bool, online?: bool})",
+          "payload": {
+            "kind": "inlineRecord",
+            "fields": [{
+              "name": "offline",
+              "optional": false,
+              "docstrings": [],
+              "signature": "bool"
+            }, {
+              "name": "online",
+              "optional": true,
+              "docstrings": ["Is the user online?"],
+              "signature": "option<bool>"
+            }]
+          }
         }]
       }
     }, 
@@ -150,6 +166,7 @@ extracting docs for src/DocExtractionRes.res
     "id": "DocExtractionRes.ModuleWithThingsThatShouldNotBeExported",
     "name": "ModuleWithThingsThatShouldNotBeExported",
     "kind": "module",
+    "docstrings": [],
     "items": [
     {
       "id": "DocExtractionRes.ModuleWithThingsThatShouldNotBeExported.t",

tools/CHANGELOG.md

@@ -14,6 +14,7 @@
 
 #### :bug: Bug Fix
 
+- Support inline record fields in constructors. https://github.com/rescript-lang/rescript-vscode/pull/889
 - Fix docstrings for module alias. Get internal docstrings of module file. https://github.com/rescript-lang/rescript-vscode/pull/878
 - Fix extracted docs of types include escaped linebreaks in signature. https://github.com/rescript-lang/rescript-vscode/pull/891