Tweak outcome printer for object type. (#355)

Adds extra tests + fix minor formatting issues.

Author: IwanKaramazow

src/res_outcome_printer.ml

@@ -435,8 +435,8 @@ let printPolyVarIdent txt =
              )
            ]
          );
-         Doc.softLine;
          Doc.trailingComma;
+         Doc.softLine;
          Doc.rbrace;
        ]
      )
@@ -678,29 +678,22 @@ let printPolyVarIdent txt =
      let constraints =  match outTypeDecl.otype_cstrs with
      | [] -> Doc.nil
      | _ -> Doc.group (
-       Doc.concat [
-         Doc.line;
-         Doc.indent (
-           Doc.concat [
-             Doc.hardLine;
-             Doc.join ~sep:Doc.line (List.map (fun (typ1, typ2) ->
-               Doc.group (
-                 Doc.concat [
-                   Doc.text "constraint ";
-                   printOutTypeDoc typ1;
-                   Doc.text " =";
-                   Doc.indent (
-                     Doc.concat [
-                       Doc.line;
-                       printOutTypeDoc typ2;
-                     ]
-                   )
-                 ]
-               )
-             ) outTypeDecl.otype_cstrs)
-           ]
-         )
-       ]
+       Doc.indent (
+         Doc.concat [
+           Doc.hardLine;
+           Doc.join ~sep:Doc.line (List.map (fun (typ1, typ2) ->
+             Doc.group (
+               Doc.concat [
+                 Doc.text "constraint ";
+                 printOutTypeDoc typ1;
+                 Doc.text " =";
+                     Doc.space;
+                     printOutTypeDoc typ2;
+               ]
+             )
+           ) outTypeDecl.otype_cstrs)
+         ]
+       )
      ) in
      Doc.group (
        Doc.concat [

tests/oprint/oprint.res

@@ -264,3 +264,18 @@ type obj6 = {"a": int}
 type obj7 = {. "a": int}
 type obj8<'a> = {.. "a": int} as 'a
 
+type objUser = {"name": string, "age": int}
+type objUserWithLongFields = {"name": string, "x": int, "age": int, "looooooongFiiiiiiiieeeeeeeldName": string, "anoooooooooooooooootherLongFiiiiiieeeeeeeldName": int}
+
+type objectCoordinate =  {"x": float, "y": float}
+type threeDimensionalCoordinate = {...objectCoordinate, "z": float}
+type differentSpreadedCoordinate = {"z": float, ...objectCoordinate, "alpha": int}
+
+type multiSpreadedCoordinate = {
+  ...threeDimensionalCoordinate,
+  "a": int,
+  ...differentSpreadedCoordinate,
+  "b": int
+}
+
+type dotdotObjectCoordinate<'a> =  {.. "suuuuuuuuuuuperLooooooooooooongFieldNaaaaaaaaaaaame": float, "suuuuuuuuuuuperLooooooooooooongFieldNaaaaaaaaaaaame2222222222222": float} as 'a

tests/oprint/oprint.res.snapshot

@@ -404,10 +404,37 @@ type obj2 = {"a": int}
 type obj3 = {"a": int}
 type obj4 = {"a": int}
 type obj5<'a> = Js.t<'a>
-
   constraint 'a = {..}
 type obj6 = {"a": int}
 type obj7 = {"a": int}
 type obj8<'a> = 'a
-
-  constraint 'a = {.."a": int}
+  constraint 'a = {.."a": int}
+type objUser = {"age": int, "name": string}
+type objUserWithLongFields = {
+  "age": int,
+  "anoooooooooooooooootherLongFiiiiiieeeeeeeldName": int,
+  "looooooongFiiiiiiiieeeeeeeldName": string,
+  "name": string,
+  "x": int,
+}
+type objectCoordinate = {"x": float, "y": float}
+type threeDimensionalCoordinate = {"x": float, "y": float, "z": float}
+type differentSpreadedCoordinate = {
+  "alpha": int,
+  "x": float,
+  "y": float,
+  "z": float,
+}
+type multiSpreadedCoordinate = {
+  "a": int,
+  "alpha": int,
+  "b": int,
+  "x": float,
+  "y": float,
+  "z": float,
+}
+type dotdotObjectCoordinate<'a> = 'a
+  constraint 'a = {..
+    "suuuuuuuuuuuperLooooooooooooongFieldNaaaaaaaaaaaame": float,
+    "suuuuuuuuuuuperLooooooooooooongFieldNaaaaaaaaaaaame2222222222222": float,
+  }