Fix setter first (#13435)

* Respect the order of SynBindings in SynMemberDefn.GetSetMember.

* Remove unnecessary tests.

* Add release notes entry for SynMemberDefn.GetSetMember.

Author: nojaf

release-notes.md

@@ -34,6 +34,7 @@ These release notes track our current efforts to document changes to the F# proj
   `a + b` is parsed as `SynLongIdent([op_Addition], [], [Some (OriginalNotation "+")])`.
 * `SynMeasure` was extended with [SynMeasure.Paren](https://fsharp.github.io/fsharp-compiler-docs/reference/fsharp-compiler-syntax-synmeasure.html#Paren) case.
 * Dynamic expressions (like `x?y`) are now represented as [SynExpr.Dynamic](https://fsharp.github.io/fsharp-compiler-docs/reference/fsharp-compiler-syntax-synexpr.html#Dynamic) in the Untyped Syntax Tree.
+* Members with `get` and/or `set` are now represented as [SynMemberDefn.GetSetMember](https://fsharp.github.io/fsharp-compiler-docs/reference/fsharp-compiler-syntax-synmemberdefn.html#GetSetMember) in the Untyped Syntax Tree.
 
 ### F# 6.0 / Visual Studio 17.0
 

src/Compiler/SyntaxTree/ParseHelpers.fs

@@ -764,42 +764,17 @@ let mkSynMemberDefnGetSet
         let setter = tryMkSynMemberDefnMember s
 
         match getter, setter with
-        | Some (SynMemberDefn.Member (getBinding, mGet), getIdent), Some (SynMemberDefn.Member (setBinding, mSet), setIdent) ->
-            let range = unionRanges mGet mSet
+        | Some (SynMemberDefn.Member (getBinding, m1), GetIdent mGet), Some (SynMemberDefn.Member (setBinding, m2), SetIdent mSet)
+        | Some (SynMemberDefn.Member (setBinding, m1), SetIdent mSet), Some (SynMemberDefn.Member (getBinding, m2), GetIdent mGet) ->
+            let range = unionRanges m1 m2
 
             let trivia =
-                match getIdent, setIdent with
-                | GetIdent mGet, SetIdent mSet
-                | SetIdent mSet, GetIdent mGet ->
-                    {
-                        WithKeyword = mWith
-                        GetKeyword = Some mGet
-                        AndKeyword = mAnd
-                        SetKeyword = Some mSet
-                    }
-                | OtherIdent, GetIdent mGet
-                | GetIdent mGet, OtherIdent ->
-                    {
-                        WithKeyword = mWith
-                        GetKeyword = Some mGet
-                        AndKeyword = mAnd
-                        SetKeyword = None
-                    }
-                | OtherIdent, SetIdent mSet
-                | SetIdent mSet, OtherIdent ->
-                    {
-                        WithKeyword = mWith
-                        GetKeyword = None
-                        AndKeyword = mAnd
-                        SetKeyword = Some mSet
-                    }
-                | _ ->
-                    {
-                        WithKeyword = mWith
-                        AndKeyword = mAnd
-                        GetKeyword = None
-                        SetKeyword = None
-                    }
+                {
+                    WithKeyword = mWith
+                    GetKeyword = Some mGet
+                    AndKeyword = mAnd
+                    SetKeyword = Some mSet
+                }
 
             [ SynMemberDefn.GetSetMember(Some getBinding, Some setBinding, range, trivia) ]
         | Some (SynMemberDefn.Member (binding, m), getOrSet), None

tests/FSharp.Compiler.ComponentTests/Conformance/ClassTypes/GetSetMembers/GetSetMembers.fs

@@ -32,7 +32,6 @@
     <Compile Include="Conformance\ClassTypes\ExplicitObjectConstructors\ExplicitObjectConstructors.fs" />
     <Compile Include="Conformance\ClassTypes\ImplicitObjectConstructors\ImplicitObjectConstructors.fs" />
     <Compile Include="Conformance\ClassTypes\ValueRestriction\ValueRestriction.fs" />
-    <Compile Include="Conformance\ClassTypes\GetSetMembers\GetSetMembers.fs" />
     <Compile Include="Conformance\DelegateTypes\DelegateDefinition.fs" />
     <Compile Include="Conformance\DeclarationElements\AccessibilityAnnotations\Basic\Basic.fs" />
     <Compile Include="Conformance\DeclarationElements\AccessibilityAnnotations\OnOverridesAndIFaceImpl\OnOverridesAndIFaceImpl.fs" />

tests/FSharp.Compiler.ComponentTests/FSharp.Compiler.ComponentTests.fsproj

@@ -785,6 +785,41 @@ type Foo =
             assertRange (3, 4) (5, 54) m
         | _ -> Assert.Fail "Could not get valid AST"
 
+    [<Test>]
+    let ``SynTypeDefn with member with set/get`` () =
+        let parseResults = 
+            getParseResults
+                """
+type A() =
+    member this.Z with set (_:int):unit = () and get():int = 1
+"""
+
+        match parseResults with
+        | ParsedInput.ImplFile (ParsedImplFileInput (modules = [ SynModuleOrNamespace.SynModuleOrNamespace(decls = [
+            SynModuleDecl.Types(
+                typeDefns = [ SynTypeDefn(typeRepr = SynTypeDefnRepr.ObjectModel(members = [
+                    SynMemberDefn.ImplicitCtor _
+                    SynMemberDefn.GetSetMember(Some (SynBinding(headPat = SynPat.LongIdent(extraId = Some getIdent))),
+                                               Some (SynBinding(headPat = SynPat.LongIdent(extraId = Some setIdent))),
+                                               m,
+                                               { WithKeyword = mWith
+                                                 GetKeyword = Some mGet
+                                                 AndKeyword = Some mAnd
+                                                 SetKeyword = Some mSet })
+                ])) ]
+            )
+        ]) ])) ->
+            Assert.AreEqual("get", getIdent.idText)
+            Assert.AreEqual("set", setIdent.idText)
+            assertRange (3, 18) (3, 22) mWith
+            assertRange (3, 23) (3, 26) mSet
+            assertRange (3, 23) (3, 26) setIdent.idRange
+            assertRange (3, 45) (3, 48) mAnd
+            assertRange (3, 49) (3, 52) mGet
+            assertRange (3, 49) (3, 52) getIdent.idRange
+            assertRange (3, 4) (3, 62) m
+        | _ -> Assert.Fail "Could not get valid AST"
+
 module SyntaxExpressions =
     [<Test>]
     let ``SynExpr.Do contains the range of the do keyword`` () =