Add trivia to Nullness nodes in SyntaxTree.

docs/release-notes/.FSharp.Compiler.Service/9.0.100.md

@@ -36,6 +36,8 @@
 * Enable LanguageFeature.EnforceAttributeTargets in F# 9.0. ([Issue #17514](https://github.com/dotnet/fsharp/issues/17558), [PR #17516](https://github.com/dotnet/fsharp/pull/17558))
 * Parser: better recovery for unfinished patterns ([PR #17231](https://github.com/dotnet/fsharp/pull/17231), [PR #17232](https://github.com/dotnet/fsharp/pull/17232)))
 * Enable consuming generic arguments defined as `allows ref struct` in C# ([Issue #17597](https://github.com/dotnet/fsharp/issues/17597)
+* Trivia for SynTypeConstraint.WhereTyparNotSupportsNull. ([Issue #17721](https://github.com/dotnet/fsharp/issues/17721), [PR #17745](https://github.com/dotnet/fsharp/pull/17745))
+* Trivia for SynType.WithNull. ([Issue #17720](https://github.com/dotnet/fsharp/issues/17720), [PR #17745](https://github.com/dotnet/fsharp/pull/17745))
 
 ### Changed
 

src/Compiler/Checking/Expressions/CheckExpressions.fs

@@ -4028,7 +4028,7 @@ let rec TcTyparConstraint ridx (cenv: cenv) newOk checkConstraints occ (env: TcE
     | SynTypeConstraint.WhereTyparSupportsNull(tp, m) ->
         TcSimpleTyparConstraint cenv env newOk tpenv tp m AddCxTypeUseSupportsNull
 
-    | SynTypeConstraint.WhereTyparNotSupportsNull(tp, m) ->
+    | SynTypeConstraint.WhereTyparNotSupportsNull(tp, m, _) ->
         if g.langFeatureNullness then
             TcSimpleTyparConstraint cenv env newOk tpenv tp m AddCxTypeDefnNotSupportsNull
         else
@@ -4472,7 +4472,7 @@ and TcTypeOrMeasure kindOpt (cenv: cenv) newOk checkConstraints occ (iwsam: Warn
         errorR(Error(FSComp.SR.parsInvalidLiteralInType(), m))
         NewErrorType (), tpenv
 
-    | SynType.WithNull(innerTy, ambivalent, m) ->
+    | SynType.WithNull(innerTy, ambivalent, m, _) ->
         let innerTyC, tpenv = TcTypeAndRecover cenv newOk checkConstraints occ WarnOnIWSAM.Yes env tpenv innerTy
         let nullness = if ambivalent then KnownAmbivalentToNull else KnownWithNull
         let tyWithNull = TcAddNullnessToType false cenv env nullness innerTyC m

src/Compiler/Service/ServiceParseTreeWalk.fs

@@ -838,7 +838,7 @@ module SyntaxTraversal =
                 | SynType.Fun(argType = ty1; returnType = ty2) -> [ ty1; ty2 ] |> List.tryPick (traverseSynType path)
                 | SynType.MeasurePower(ty, _, _)
                 | SynType.HashConstraint(ty, _)
-                | SynType.WithNull(ty, _, _)
+                | SynType.WithNull(innerType = ty)
                 | SynType.WithGlobalConstraints(ty, _, _)
                 | SynType.Array(_, ty, _) -> traverseSynType path ty
                 | SynType.StaticConstantNamed(ty1, ty2, _)

src/Compiler/Service/ServiceParsedInputOps.fs

@@ -647,7 +647,7 @@ module ParsedInput =
             | SynTypeConstraint.WhereTyparIsReferenceType(t, _) -> walkTypar t
             | SynTypeConstraint.WhereTyparIsUnmanaged(t, _) -> walkTypar t
             | SynTypeConstraint.WhereTyparSupportsNull(t, _) -> walkTypar t
-            | SynTypeConstraint.WhereTyparNotSupportsNull(t, _) -> walkTypar t
+            | SynTypeConstraint.WhereTyparNotSupportsNull(genericName = t) -> walkTypar t
             | SynTypeConstraint.WhereTyparIsComparable(t, _) -> walkTypar t
             | SynTypeConstraint.WhereTyparIsEquatable(t, _) -> walkTypar t
             | SynTypeConstraint.WhereTyparSubtypeOfType(t, ty, _) -> walkTypar t |> Option.orElseWith (fun () -> walkType ty)
@@ -711,7 +711,7 @@ module ParsedInput =
             | SynType.Array(_, t, _) -> walkType t
             | SynType.Fun(argType = t1; returnType = t2) -> walkType t1 |> Option.orElseWith (fun () -> walkType t2)
             | SynType.WithGlobalConstraints(t, _, _) -> walkType t
-            | SynType.WithNull(t, _, _)
+            | SynType.WithNull(innerType = t)
             | SynType.HashConstraint(t, _) -> walkType t
             | SynType.Or(t1, t2, _, _) -> walkType t1 |> Option.orElseWith (fun () -> walkType t2)
             | SynType.MeasurePower(t, _, _) -> walkType t
@@ -1914,7 +1914,7 @@ module ParsedInput =
             | SynTypeConstraint.WhereTyparIsReferenceType(t, _)
             | SynTypeConstraint.WhereTyparIsUnmanaged(t, _)
             | SynTypeConstraint.WhereTyparSupportsNull(t, _)
-            | SynTypeConstraint.WhereTyparNotSupportsNull(t, _)
+            | SynTypeConstraint.WhereTyparNotSupportsNull(genericName = t)
             | SynTypeConstraint.WhereTyparIsComparable(t, _)
             | SynTypeConstraint.WhereTyparIsEquatable(t, _) -> walkTypar t
             | SynTypeConstraint.WhereTyparDefaultsToType(t, ty, _)
@@ -1976,7 +1976,7 @@ module ParsedInput =
             | SynType.Array(_, t, _)
             | SynType.HashConstraint(t, _)
             | SynType.MeasurePower(t, _, _)
-            | SynType.WithNull(t, _, _)
+            | SynType.WithNull(innerType = t)
             | SynType.Paren(t, _)
             | SynType.SignatureParameter(usedType = t) -> walkType t
             | SynType.Fun(argType = t1; returnType = t2)

src/Compiler/SyntaxTree/SyntaxTree.fs

@@ -332,7 +332,7 @@ type SynTypeConstraint =
 
     | WhereTyparSupportsNull of typar: SynTypar * range: range
 
-    | WhereTyparNotSupportsNull of genericName: SynTypar * range: range
+    | WhereTyparNotSupportsNull of genericName: SynTypar * range: range * trivia: SynTypeConstraintWhereTyparNotSupportsNullTrivia
 
     | WhereTyparIsComparable of typar: SynTypar * range: range
 
@@ -465,7 +465,7 @@ type SynType =
 
     | StaticConstantNamed of ident: SynType * value: SynType * range: range
 
-    | WithNull of innerType: SynType * ambivalent: bool * range: range
+    | WithNull of innerType: SynType * ambivalent: bool * range: range * trivia: SynTypeWithNullTrivia
 
     | Paren of innerType: SynType * range: range
 

src/Compiler/SyntaxTree/SyntaxTree.fsi

@@ -409,7 +409,10 @@ type SynTypeConstraint =
     | WhereTyparSupportsNull of typar: SynTypar * range: range
 
     /// F# syntax is 'typar : null
-    | WhereTyparNotSupportsNull of genericName: SynTypar * range: range
+    | WhereTyparNotSupportsNull of
+        genericName: SynTypar *
+        range: range *
+        trivia: SynTypeConstraintWhereTyparNotSupportsNullTrivia
 
     /// F# syntax is 'typar: comparison
     | WhereTyparIsComparable of typar: SynTypar * range: range
@@ -527,7 +530,7 @@ type SynType =
     /// F# syntax: ident=1 etc., used in static parameters to type providers
     | StaticConstantNamed of ident: SynType * value: SynType * range: range
 
-    | WithNull of innerType: SynType * ambivalent: bool * range: range
+    | WithNull of innerType: SynType * ambivalent: bool * range: range * trivia: SynTypeWithNullTrivia
 
     | Paren of innerType: SynType * range: range
 

src/Compiler/SyntaxTree/SyntaxTrivia.fs

@@ -404,6 +404,9 @@ type SynFieldTrivia =
 [<NoEquality; NoComparison>]
 type SynTypeOrTrivia = { OrKeyword: range }
 
+[<NoEquality; NoComparison>]
+type SynTypeWithNullTrivia = { BarRange: range }
+
 [<NoEquality; NoComparison>]
 type SynBindingReturnInfoTrivia = { ColonRange: range option }
 
@@ -429,3 +432,6 @@ type SynMeasureConstantTrivia =
         LessRange: range
         GreaterRange: range
     }
+
+[<NoEquality; NoComparison>]
+type SynTypeConstraintWhereTyparNotSupportsNullTrivia = { ColonRange: range; NotRange: range }

src/Compiler/SyntaxTree/SyntaxTrivia.fsi

@@ -512,6 +512,14 @@ type SynTypeOrTrivia =
         OrKeyword: range
     }
 
+/// Represents additional information for SynType.WithNull
+[<NoEquality; NoComparison>]
+type SynTypeWithNullTrivia =
+    {
+        /// The syntax range of the `|` token
+        BarRange: range
+    }
+
 /// Represents additional information for SynBindingReturnInfo
 [<NoEquality; NoComparison>]
 type SynBindingReturnInfoTrivia =
@@ -545,3 +553,14 @@ type SynTyparDeclTrivia =
 type SynMeasureConstantTrivia =
     { LessRange: range
       GreaterRange: range }
+
+/// Represents additional information for SynTypeConstraint.WhereTyparNotSupportsNull
+[<NoEquality; NoComparison>]
+type SynTypeConstraintWhereTyparNotSupportsNullTrivia =
+    {
+        /// The syntax range of `:`
+        ColonRange: range
+
+        /// The syntax range of `not`
+        NotRange: range
+    }

src/Compiler/pars.fsy

@@ -2652,8 +2652,9 @@ typeConstraint:
      { SynTypeConstraint.WhereTyparSupportsNull($1, lhs parseState) }
 
   | typar COLON IDENT NULL
-      { if $3 <> "not" then reportParseErrorAt (rhs parseState 3) (FSComp.SR.parsUnexpectedIdentifier($3 + " (2)"))  
-        SynTypeConstraint.WhereTyparNotSupportsNull($1, lhs parseState) }
+      { if $3 <> "not" then reportParseErrorAt (rhs parseState 3) (FSComp.SR.parsUnexpectedIdentifier($3 + " (2)"))
+        let trivia : SynTypeConstraintWhereTyparNotSupportsNullTrivia = { ColonRange = rhs parseState 2; NotRange = rhs parseState 3 }
+        SynTypeConstraint.WhereTyparNotSupportsNull($1, lhs parseState, trivia) }
 
   | typar COLON LPAREN classMemberSpfn rparen
      { let tp = $1
@@ -3241,7 +3242,7 @@ cType:
        SynType.App(SynType.LongIdent(SynLongIdent([ident("nativeptr", m)], [], [ Some(IdentTrivia.OriginalNotation "*") ])), None, [$1], [], None, true, m) }
 
   | cType BAR_JUST_BEFORE_NULL NULL
-    { SynType.WithNull($1, false, lhs parseState) }
+    { SynType.WithNull($1, false, lhs parseState, { BarRange = rhs parseState 2 }) }
 
   | cType AMP
      { let m = lhs parseState
@@ -6193,7 +6194,7 @@ appTypeConPower:
 
 appTypeCanBeNullable:
   | appTypeWithoutNull BAR_JUST_BEFORE_NULL NULL
-    { SynType.WithNull($1, false, lhs parseState) }
+    { SynType.WithNull($1, false, lhs parseState, { BarRange = rhs parseState 2 }) }
 
   | appTypeWithoutNull
     { $1 }

tests/FSharp.Compiler.Service.Tests/FSharp.Compiler.Service.SurfaceArea.netstandard20.debug.bsl

@@ -9197,6 +9197,8 @@ FSharp.Compiler.Syntax.SynType+WithNull: Boolean ambivalent
 FSharp.Compiler.Syntax.SynType+WithNull: Boolean get_ambivalent()
 FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.Syntax.SynType get_innerType()
 FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.Syntax.SynType innerType
+FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia get_trivia()
+FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia trivia
 FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.Text.Range get_range()
 FSharp.Compiler.Syntax.SynType+WithNull: FSharp.Compiler.Text.Range range
 FSharp.Compiler.Syntax.SynType: Boolean IsAnon
@@ -9264,7 +9266,7 @@ FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewStaticConstant
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewTuple(Boolean, Microsoft.FSharp.Collections.FSharpList`1[FSharp.Compiler.Syntax.SynTupleTypeSegment], FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewVar(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewWithGlobalConstraints(FSharp.Compiler.Syntax.SynType, Microsoft.FSharp.Collections.FSharpList`1[FSharp.Compiler.Syntax.SynTypeConstraint], FSharp.Compiler.Text.Range)
-FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewWithNull(FSharp.Compiler.Syntax.SynType, Boolean, FSharp.Compiler.Text.Range)
+FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType NewWithNull(FSharp.Compiler.Syntax.SynType, Boolean, FSharp.Compiler.Text.Range, FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia)
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType+Anon
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType+AnonRecd
 FSharp.Compiler.Syntax.SynType: FSharp.Compiler.Syntax.SynType+App
@@ -9350,6 +9352,8 @@ FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparIsValueType: FSharp.Compiler.
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparIsValueType: FSharp.Compiler.Text.Range range
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.Syntax.SynTypar genericName
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.Syntax.SynTypar get_genericName()
+FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia get_trivia()
+FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia trivia
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.Text.Range get_range()
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparNotSupportsNull: FSharp.Compiler.Text.Range range
 FSharp.Compiler.Syntax.SynTypeConstraint+WhereTyparSubtypeOfType: FSharp.Compiler.Syntax.SynTypar get_typar()
@@ -9403,7 +9407,7 @@ FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstrai
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparIsReferenceType(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparIsUnmanaged(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparIsValueType(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
-FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparNotSupportsNull(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
+FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparNotSupportsNull(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range, FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia)
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparSubtypeOfType(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Syntax.SynType, FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparSupportsMember(FSharp.Compiler.Syntax.SynType, FSharp.Compiler.Syntax.SynMemberSig, FSharp.Compiler.Text.Range)
 FSharp.Compiler.Syntax.SynTypeConstraint: FSharp.Compiler.Syntax.SynTypeConstraint NewWhereTyparSupportsNull(FSharp.Compiler.Syntax.SynTypar, FSharp.Compiler.Text.Range)
@@ -10573,6 +10577,12 @@ FSharp.Compiler.SyntaxTrivia.SynTyparDeclTrivia: Microsoft.FSharp.Collections.FS
 FSharp.Compiler.SyntaxTrivia.SynTyparDeclTrivia: Microsoft.FSharp.Collections.FSharpList`1[FSharp.Compiler.Text.Range] get_AmpersandRanges()
 FSharp.Compiler.SyntaxTrivia.SynTyparDeclTrivia: System.String ToString()
 FSharp.Compiler.SyntaxTrivia.SynTyparDeclTrivia: Void .ctor(Microsoft.FSharp.Collections.FSharpList`1[FSharp.Compiler.Text.Range])
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: FSharp.Compiler.Text.Range ColonRange
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: FSharp.Compiler.Text.Range NotRange
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: FSharp.Compiler.Text.Range get_ColonRange()
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: FSharp.Compiler.Text.Range get_NotRange()
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: System.String ToString()
+FSharp.Compiler.SyntaxTrivia.SynTypeConstraintWhereTyparNotSupportsNullTrivia: Void .ctor(FSharp.Compiler.Text.Range, FSharp.Compiler.Text.Range)
 FSharp.Compiler.SyntaxTrivia.SynTypeDefnLeadingKeyword+And: FSharp.Compiler.Text.Range Item
 FSharp.Compiler.SyntaxTrivia.SynTypeDefnLeadingKeyword+And: FSharp.Compiler.Text.Range get_Item()
 FSharp.Compiler.SyntaxTrivia.SynTypeDefnLeadingKeyword+StaticType: FSharp.Compiler.Text.Range get_staticRange()
@@ -10635,6 +10645,10 @@ FSharp.Compiler.SyntaxTrivia.SynTypeOrTrivia: FSharp.Compiler.Text.Range OrKeywo
 FSharp.Compiler.SyntaxTrivia.SynTypeOrTrivia: FSharp.Compiler.Text.Range get_OrKeyword()
 FSharp.Compiler.SyntaxTrivia.SynTypeOrTrivia: System.String ToString()
 FSharp.Compiler.SyntaxTrivia.SynTypeOrTrivia: Void .ctor(FSharp.Compiler.Text.Range)
+FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia: FSharp.Compiler.Text.Range BarRange
+FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia: FSharp.Compiler.Text.Range get_BarRange()
+FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia: System.String ToString()
+FSharp.Compiler.SyntaxTrivia.SynTypeWithNullTrivia: Void .ctor(FSharp.Compiler.Text.Range)
 FSharp.Compiler.SyntaxTrivia.SynUnionCaseTrivia: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] BarRange
 FSharp.Compiler.SyntaxTrivia.SynUnionCaseTrivia: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] get_BarRange()
 FSharp.Compiler.SyntaxTrivia.SynUnionCaseTrivia: System.String ToString()