Show warning when Record is accessed without type but RequireQualifie…

…dAccess was set - relates to dotnet#95

src/fsharp/FSComp.txt

@@ -1022,7 +1022,8 @@ lexfltSeparatorTokensOfPatternMatchMisaligned,"The '|' tokens separating rules o
 1130,nrInvalidFieldLabel,"Invalid field label"
 1132,nrInvalidExpression,"Invalid expression '%s'"
 1133,nrNoConstructorsAvailableForType,"No constructors are available for the type '%s'"
-1134,nrUnionTypeNeedsQualifiedAccess,"The union type for union case '%s' was defined with the RequireQualifiedAccessAttribute. Include the name of the union type ('%s') in the name you are using.""
+1134,nrUnionTypeNeedsQualifiedAccess,"The union type for union case '%s' was defined with the RequireQualifiedAccessAttribute. Include the name of the union type ('%s') in the name you are using."
+1135,nrRecordTypeNeedsQualifiedAccess,"The record type for the record field '%s' was defined with the RequireQualifiedAccessAttribute. Include the name of the record type ('%s') in the name you are using."
 # -----------------------------------------------------------------------------
 # ilwrite.fs errors
 # -----------------------------------------------------------------------------

src/fsharp/nameres.fs

@@ -221,6 +221,9 @@ let valRefHash (vref: ValRef) =
     | None -> 0 
     | Some v -> LanguagePrimitives.PhysicalHash v
 
+/// Represents a record field resolution and the information if the usage is deprecated.
+type FieldResolution = FieldResolution of RecdFieldRef * bool
+
 /// Information about an extension member held in the name resolution environment
 type ExtensionMember = 
 
@@ -2144,7 +2147,8 @@ let rec ResolveFieldInModuleOrNamespace (ncenv:NameResolver) nenv ad (resInfo:Re
         let modulScopedFieldNames = 
             match TryFindTypeWithRecdField modref id  with
             | Some tycon when IsEntityAccessible ncenv.amap m ad (modref.MkNestedTyconRef tycon) -> 
-                success(modref.MkNestedRecdFieldRef tycon id, rest)
+                let showDeprecated = HasFSharpAttribute ncenv.g ncenv.g.attrib_RequireQualifiedAccessAttribute tycon.Attribs
+                success(FieldResolution(modref.MkNestedRecdFieldRef tycon id,showDeprecated), rest)
             | _ -> error
         // search for type-qualified names, e.g. { Microsoft.FSharp.Core.Ref.contents = 1 } 
         let tyconSearch = 
@@ -2154,7 +2158,7 @@ let rec ResolveFieldInModuleOrNamespace (ncenv:NameResolver) nenv ad (resInfo:Re
                 let tcrefs = tcrefs |> List.map (fun tcref -> (ResolutionInfo.Empty,tcref))
                 let tyconSearch = ResolveLongIdentInTyconRefs ncenv nenv LookupKind.RecdField  (depth+1) m ad rest typeNameResInfo id.idRange tcrefs
                 // choose only fields 
-                let tyconSearch = tyconSearch |?> List.choose (function (_,Item.RecdField(RecdFieldInfo(_,rfref)),rest) -> Some(rfref,rest) | _ -> None)
+                let tyconSearch = tyconSearch |?> List.choose (function (_,Item.RecdField(RecdFieldInfo(_,rfref)),rest) -> Some(FieldResolution(rfref,false),rest) | _ -> None)
                 tyconSearch
             | _ -> 
                 NoResultsOrUsefulErrors
@@ -2181,15 +2185,16 @@ let ResolveField (ncenv:NameResolver) nenv ad typ (mp,id:Ident) =
     | [] -> 
         if isAppTy g typ then 
             match ncenv.InfoReader.TryFindRecdOrClassFieldInfoOfType(id.idText,m,typ) with
-            | Some (RecdFieldInfo(_,rfref)) -> [rfref]
+            | Some (RecdFieldInfo(_,rfref)) -> [FieldResolution(rfref,false)]
             | None -> error(Error(FSComp.SR.nrTypeDoesNotContainSuchField((NicePrint.minimalStringOfType nenv.eDisplayEnv typ), id.idText),m))
         else 
             let frefs = 
                 try Map.find id.idText nenv.eFieldLabels 
                 with :? KeyNotFoundException -> error (UndefinedName(0,FSComp.SR.undefinedNameRecordLabel,id,NameMap.domainL nenv.eFieldLabels))
             // Eliminate duplicates arising from multiple 'open' 
-            let frefs = frefs |> ListSet.setify (fun fref1 fref2 -> tyconRefEq g fref1.TyconRef fref2.TyconRef)
-            frefs
+            frefs 
+            |> ListSet.setify (fun fref1 fref2 -> tyconRefEq g fref1.TyconRef fref2.TyconRef)
+            |> List.map (fun x -> FieldResolution(x,false))
 
     | _ -> 
         let lid = (mp@[id])
@@ -2201,7 +2206,7 @@ let ResolveField (ncenv:NameResolver) nenv ad typ (mp,id:Ident) =
                 let tcrefs = tcrefs |> List.map (fun tcref -> (ResolutionInfo.Empty,tcref))
                 let tyconSearch = ResolveLongIdentInTyconRefs ncenv nenv LookupKind.RecdField 1 m ad rest typeNameResInfo tn.idRange tcrefs
                 // choose only fields 
-                let tyconSearch = tyconSearch |?> List.choose (function (_,Item.RecdField(RecdFieldInfo(_,rfref)),rest) -> Some(rfref,rest) | _ -> None)
+                let tyconSearch = tyconSearch |?> List.choose (function (_,Item.RecdField(RecdFieldInfo(_,rfref)),rest) -> Some(FieldResolution(rfref,false),rest) | _ -> None)
                 tyconSearch
             | _ -> NoResultsOrUsefulErrors
         let modulSearch ad = 

src/fsharp/nameres.fsi

@@ -68,6 +68,8 @@ type Item =
   | UnqualifiedType of TyconRef list
   member DisplayName : TcGlobals -> string
 
+/// Represents a record field resolution and the information if the usage is deprecated.
+type FieldResolution = FieldResolution of RecdFieldRef * bool
 
 /// Information about an extension member held in the name resolution environment
 [<Sealed>]
@@ -263,7 +265,7 @@ val internal ResolveTypeLongIdentInTyconRef         : TcResultsSink -> NameResol
 val internal ResolveTypeLongIdent                   : TcResultsSink -> NameResolver -> ItemOccurence -> FullyQualifiedFlag -> NameResolutionEnv -> AccessorDomain -> Ident list -> TypeNameResolutionStaticArgsInfo -> PermitDirectReferenceToGeneratedType -> ResultOrException<TyconRef>
 
 /// Resolve a long identifier to a field
-val internal ResolveField                           : NameResolver -> NameResolutionEnv -> AccessorDomain -> TType -> Ident list * Ident -> RecdFieldRef list
+val internal ResolveField                           : NameResolver -> NameResolutionEnv -> AccessorDomain -> TType -> Ident list * Ident -> FieldResolution list
 
 /// Resolve a long identifier occurring in an expression position
 val internal ResolveExprLongIdent                   : TcResultsSink -> NameResolver -> range -> AccessorDomain -> NameResolutionEnv -> TypeNameResolutionInfo -> Ident list -> Item * Ident list

src/fsharp/tc.fs

@@ -1828,7 +1828,7 @@ let BuildFieldMap cenv env isPartial ty flds m =
             let frefSet = ResolveField cenv.nameResolver env.eNameResEnv ad ty fld
             fld,frefSet, fldExpr)
     let relevantTypeSets = 
-        frefSets |> List.map (fun (_,frefSet,_) -> frefSet |> List.choose (fun rfref -> Some rfref.TyconRef))
+        frefSets |> List.map (fun (_,frefSet,_) -> frefSet |> List.choose (fun (FieldResolution(rfref,_)) -> Some rfref.TyconRef))
 
     let tcref = 
         match List.fold (ListSet.intersect (tyconRefEq cenv.g)) (List.head relevantTypeSets) (List.tail relevantTypeSets) with
@@ -1840,13 +1840,13 @@ let BuildFieldMap cenv env isPartial ty flds m =
             // We're going to get an error of some kind below. 
             // Just choose one field ref and let the error come later 
             let (_,frefSet1,_) = List.head frefSets
-            let fref1 = List.head frefSet1
+            let (FieldResolution(fref1,_))= List.head frefSet1
             fref1.TyconRef
 
     let fldsmap,rfldsList = 
         ((Map.empty,[]), frefSets) ||> List.fold (fun (fs,rfldsList) (fld,frefs,fldExpr) -> 
-                match frefs |> List.filter (fun fref2 -> tyconRefEq cenv.g tcref fref2.TyconRef) with
-                | [fref2] -> 
+                match frefs |> List.filter (fun (FieldResolution(fref2,_)) -> tyconRefEq cenv.g tcref fref2.TyconRef) with
+                | [FieldResolution(fref2,showDeprecated)] -> 
 
                     // Record the precise resolution of the field for intellisense
                     let item = FreshenRecdFieldRef cenv.nameResolver m fref2
@@ -1856,9 +1856,12 @@ let BuildFieldMap cenv env isPartial ty flds m =
                     CheckFSharpAttributes cenv.g fref2.PropertyAttribs m |> CommitOperationResult        
                     if  Map.containsKey fref2.FieldName fs then 
                         errorR (Error(FSComp.SR.tcFieldAppearsTwiceInRecord(fref2.FieldName),m))
+                    if showDeprecated then
+                        warning(Deprecated(FSComp.SR.nrRecordTypeNeedsQualifiedAccess(fref2.FieldName,fref2.Tycon.DisplayName) |> snd,m))
+
                     if  not (tyconRefEq cenv.g tcref fref2.TyconRef) then 
                         let (_,frefSet1,_) = List.head frefSets
-                        let fref1 = List.head frefSet1
+                        let (FieldResolution(fref1,_)) = List.head frefSet1
                         errorR (FieldsFromDifferentTypes(env.DisplayEnv,fref1,fref2,m))
                         (fs,rfldsList)
                     else (Map.add fref2.FieldName fldExpr fs,

tests/fsharp/typecheck/sigs/neg90.bsl

@@ -5,4 +5,6 @@ neg90.fs(7,22,7,25): typecheck error FS0039: The type 'foo' is not defined
 
 neg90.fs(7,22,7,25): typecheck error FS0039: The type 'foo' is not defined
 
-neg90.fs(16,9,16,21): typecheck error FS0035: This construct is deprecated: The union type for union case 'Member' was defined with the RequireQualifiedAccessAttribute. Include the name of the union type ('DU') in the name you are using.'
+neg90.fs(16,9,16,21): typecheck error FS0035: This construct is deprecated: The union type for union case 'Member' was defined with the RequireQualifiedAccessAttribute. Include the name of the union type ('DU') in the name you are using."
+
+neg90.fs(28,9,28,41): typecheck error FS0035: This construct is deprecated: The record type for the record field 'Field1' was defined with the RequireQualifiedAccessAttribute. Include the name of the record type ('Record1') in the name you are using.'

tests/fsharp/typecheck/sigs/neg90.fs

@@ -13,4 +13,17 @@ module First =
   [<RequireQualifiedAccess>]
   type DU = Member of int
 
-let _ = First.Member(0)
+let _ = First.Member(0)     // compiles, but should not
+let _ = First.DU.Member(0) // correct
+
+// See https://github.com/Microsoft/visualfsharp/issues/95 - part 2
+module ModuleWithRecord =
+    [<RequireQualifiedAccess>]
+    type Record1 = { Field1 : int }
+
+let _ = { ModuleWithRecord.Record1.Field1 = 42 } // correct
+
+open ModuleWithRecord
+let _ = { Record1.Field1 = 42 }                  // correct
+let _ = { ModuleWithRecord.Field1 = 42 }         // compiles, but should not
+let _ = { ModuleWithRecord.Record1.Field1 = 42 } // correct