Implement triple quoted interpolation code fix

src/fsharp/service/FSharpParseFileResults.fs

@@ -306,6 +306,14 @@ type FSharpParseFileResults(diagnostics: FSharpDiagnostic[], input: ParsedInput,
                     Some(app.Range, lambdaArgs.Range, lambdaBody.Range)
                 | _ -> defaultTraverse binding })
 
+    member _.TryRangeOfStringInterpolationContainingPos pos =
+        SyntaxTraversal.Traverse(pos, input, { new SyntaxVisitorBase<_>() with
+            member _.VisitExpr(_, _, defaultTraverse, expr) =
+                match expr with
+                | SynExpr.InterpolatedString(range = range) when rangeContainsPos range pos ->
+                    Some range
+                | _ -> defaultTraverse expr })
+
     member _.TryRangeOfExprInYieldOrReturn pos =
         SyntaxTraversal.Traverse(pos, input, { new SyntaxVisitorBase<_>() with 
             member _.VisitExpr(_path, _, defaultTraverse, expr) =

src/fsharp/service/FSharpParseFileResults.fsi

@@ -20,6 +20,9 @@ type public FSharpParseFileResults =
     /// Attempts to find the range of an attempted lambda expression or pattern, the argument range, and the expr range when writing a C#-style "lambda" (which is actually an operator application)
     member TryRangeOfParenEnclosingOpEqualsGreaterUsage: opGreaterEqualPos: pos -> (range * range * range) option
 
+    /// Attempts to find the range of the string interpolation that contains a given position.
+    member TryRangeOfStringInterpolationContainingPos: pos: pos -> range option
+
     /// Attempts to find the range of an expression `expr` contained in a `yield expr`  or `return expr` expression (and bang-variants).
     member TryRangeOfExprInYieldOrReturn: pos: pos -> range option
 

tests/FSharp.Compiler.Service.Tests/FSharp.CompilerService.SurfaceArea.netstandard.expected

@@ -2069,6 +2069,7 @@ FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FShar
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] TryRangeOfNameOfNearestOuterBindingContainingPos(FSharp.Compiler.Text.Position)
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] TryRangeOfRecordExpressionContainingPos(FSharp.Compiler.Text.Position)
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] TryRangeOfRefCellDereferenceContainingPos(FSharp.Compiler.Text.Position)
+FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] TryRangeOfStringInterpolationContainingPos(FSharp.Compiler.Text.Position)
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[FSharp.Compiler.Text.Range] ValidateBreakpointLocation(FSharp.Compiler.Text.Position)
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[Microsoft.FSharp.Collections.FSharpList`1[FSharp.Compiler.Text.Range]] GetAllArgumentsForFunctionApplicationAtPostion(FSharp.Compiler.Text.Position)
 FSharp.Compiler.CodeAnalysis.FSharpParseFileResults: Microsoft.FSharp.Core.FSharpOption`1[System.Tuple`2[FSharp.Compiler.Syntax.Ident,System.Int32]] TryIdentOfPipelineContainingPosAndNumArgsApplied(FSharp.Compiler.Text.Position)

vsintegration/src/FSharp.Editor/CodeFix/UseTripleQuotedInterpolation.fs

@@ -0,0 +1,51 @@
+// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
+
+namespace Microsoft.VisualStudio.FSharp.Editor
+
+open System.Composition
+
+open Microsoft.CodeAnalysis.Text
+open Microsoft.CodeAnalysis.CodeFixes
+
+[<ExportCodeFixProvider(FSharpConstants.FSharpLanguageName, Name = "UseTripleQuotedInterpolation"); Shared>]
+type internal FSharpUseTripleQuotedInterpolationCodeFixProvider
+    [<ImportingConstructor>]
+    (
+    ) =
+    inherit CodeFixProvider()
+
+    let fixableDiagnosticIds = ["FS3373"]
+
+    override _.FixableDiagnosticIds = Seq.toImmutableArray fixableDiagnosticIds
+
+    override _.RegisterCodeFixesAsync context =
+        asyncMaybe {
+            let! parseResults = context.Document.GetFSharpParseResultsAsync(nameof(FSharpUseTripleQuotedInterpolationCodeFixProvider)) |> liftAsync
+
+            let! sourceText = context.Document.GetTextAsync(context.CancellationToken)
+            let errorRange = RoslynHelpers.TextSpanToFSharpRange(context.Document.FilePath, context.Span, sourceText)
+
+            let! interpolationRange = parseResults.TryRangeOfStringInterpolationContainingPos errorRange.Start
+            let! interpolationSpan = RoslynHelpers.TryFSharpRangeToTextSpan(sourceText, interpolationRange)
+
+            let replacement =
+                let interpolation = sourceText.GetSubText(interpolationSpan).ToString()
+                TextChange(interpolationSpan, "$\"\"" + interpolation.[ 1 .. ] + "\"\"")
+
+            let diagnostics =
+                context.Diagnostics
+                |> Seq.filter (fun x -> fixableDiagnosticIds |> List.contains x.Id)
+                |> Seq.toImmutableArray
+
+            let title = SR.UseTripleQuotedInterpolation()
+
+            let codeFix =
+                CodeFixHelpers.createTextChangeCodeFix(
+                    title,
+                    context,
+                    (fun () -> asyncMaybe.Return [| replacement |]))
+
+            context.RegisterCodeFix(codeFix, diagnostics)
+        }
+        |> Async.Ignore
+        |> RoslynHelpers.StartAsyncUnitAsTask(context.CancellationToken)

vsintegration/src/FSharp.Editor/FSharp.Editor.fsproj

@@ -121,6 +121,7 @@
     <Compile Include="CodeFix\MissingReferenceCodeFixProvider.fs" />
     <Compile Include="CodeFix\FixIndexerAccess.fs" />
     <Compile Include="CodeFix\RenameParamToMatchSignature.fs" />
+    <Compile Include="CodeFix\UseTripleQuotedInterpolation.fs" />
     <Compile Include="Build\SetGlobalPropertiesForSdkProjects.fs" />
     <Compile Include="AutomaticCompletion\BraceCompletionSessionProvider.fsi" />
     <Compile Include="AutomaticCompletion\BraceCompletionSessionProvider.fs" />

vsintegration/src/FSharp.Editor/FSharp.Editor.resx

@@ -288,4 +288,7 @@
   <data name="UseNameof" xml:space="preserve">
     <value>Use 'nameof'</value>
   </data>
-</root>
+  <data name="UseTripleQuotedInterpolation" xml:space="preserve">
+    <value>Use triple quoted string interpolation.</value>
+  </data>
+</root>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.cs.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Použít nameof</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Použijte upcast</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.de.xlf

@@ -262,6 +262,11 @@
         <target state="translated">"nameof" verwenden</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">"upcast" verwenden</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.es.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Usar 'nameof'</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Usar "upcast"</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.fr.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Utiliser « nameof »</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Utiliser 'upcast'</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.it.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Usa 'nameof'</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Usare 'upcast'</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.ja.xlf

@@ -262,6 +262,11 @@
         <target state="translated">'nameof' を使用する</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">'upcast' を使用する</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.ko.xlf

@@ -262,6 +262,11 @@
         <target state="translated">'nameof' 사용</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">'upcast' 사용</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.pl.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Użyj wyrażenia "nameof"</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Użyj operatora „upcast”</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.pt-BR.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Usar 'nameof'</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Usar 'upcast'</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.ru.xlf

@@ -262,6 +262,11 @@
         <target state="translated">Использовать "nameof"</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">Используйте "upcast"</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.tr.xlf

@@ -262,6 +262,11 @@
         <target state="translated">“Nameof” kullanın</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">'upcast' kullan</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.zh-Hans.xlf

@@ -262,6 +262,11 @@
         <target state="translated">使用 "nameof"</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">使用“向上转换”</target>

vsintegration/src/FSharp.Editor/xlf/FSharp.Editor.zh-Hant.xlf

@@ -262,6 +262,11 @@
         <target state="translated">使用 'nameof'</target>
         <note />
       </trans-unit>
+      <trans-unit id="UseTripleQuotedInterpolation">
+        <source>Use triple quoted string interpolation.</source>
+        <target state="new">Use triple quoted string interpolation.</target>
+        <note />
+      </trans-unit>
       <trans-unit id="UseUpcastKeyword">
         <source>Use 'upcast'</source>
         <target state="translated">使用「向上轉型」</target>