fix script editing perf

src/fsharp/Microsoft.DotNet.DependencyManager/DependencyProvider.fs

@@ -8,6 +8,7 @@ open System.Reflection
 open System.Runtime.InteropServices
 open Internal.Utilities.FSharpEnvironment
 open Microsoft.FSharp.Reflection
+open System.Collections.Concurrent
 
 [<AutoOpen>]
 module ReflectionHelper =
@@ -88,19 +89,19 @@ type IResolveDependenciesResult =
     abstract Success: bool
 
     /// The resolution output log
-    abstract StdOut: string array
+    abstract StdOut: string[]
 
     /// The resolution error log (* process stderror *)
-    abstract StdError: string array
+    abstract StdError: string[]
 
     /// The resolution paths
-    abstract Resolutions: string seq
+    abstract Resolutions: seq<string>
 
     /// The source code file paths
-    abstract SourceFiles: string seq
+    abstract SourceFiles: seq<string>
 
     /// The roots to package directories
-    abstract Roots: string seq
+    abstract Roots: seq<string>
 
 
 [<AllowNullLiteralAttribute>]
@@ -326,6 +327,8 @@ type DependencyProvider (assemblyProbingPaths: AssemblyResolutionProbe, nativePr
                     None
             managers
 
+    let cache = ConcurrentDictionary<_,IResolveDependenciesResult>(HashIdentity.Structural)
+
     /// Returns a formatted error message for the host to presentconstruct with just nativeProbing handler
     new (nativeProbingRoots: NativeResolutionProbe) =
         new DependencyProvider(Unchecked.defaultof<AssemblyResolutionProbe>, nativeProbingRoots)
@@ -390,20 +393,24 @@ type DependencyProvider (assemblyProbingPaths: AssemblyResolutionProbe, nativePr
                        [<Optional;DefaultParameterValue("")>]implicitIncludeDir: string,
                        [<Optional;DefaultParameterValue("")>]mainScriptName: string,
                        [<Optional;DefaultParameterValue("")>]fileName: string): IResolveDependenciesResult =
+
+        let key = (packageManager.Key, scriptExt, Seq.toArray packageManagerTextLines, executionTfm, executionRid, implicitIncludeDir, mainScriptName, fileName)
 
-        try
-            let executionRid =
-                if isNull executionRid then
-                    RidHelpers.platformRid
-                else
-                    executionRid
-            packageManager.ResolveDependencies(implicitIncludeDir, mainScriptName, fileName, scriptExt, packageManagerTextLines, executionTfm, executionRid)
-
-        with e ->
-            let e = stripTieWrapper e
-            let err, msg = (DependencyManager.SR.packageManagerError(e.Message))
-            reportError.Invoke(ErrorReportType.Error, err, msg)
-            ReflectionDependencyManagerProvider.MakeResultFromFields(false, arrEmpty, arrEmpty, seqEmpty, seqEmpty, seqEmpty)
+        cache.GetOrAdd(key, System.Func<_,_>(fun _ -> 
+            try
+                let executionRid =
+                    if isNull executionRid then
+                        RidHelpers.platformRid
+                    else
+                        executionRid
+                packageManager.ResolveDependencies(implicitIncludeDir, mainScriptName, fileName, scriptExt, packageManagerTextLines, executionTfm, executionRid)
+
+            with e ->
+                let e = stripTieWrapper e
+                let err, msg = (DependencyManager.SR.packageManagerError(e.Message))
+                reportError.Invoke(ErrorReportType.Error, err, msg)
+                ReflectionDependencyManagerProvider.MakeResultFromFields(false, arrEmpty, arrEmpty, seqEmpty, seqEmpty, seqEmpty)
+        ))
 
     interface IDisposable with
 

vsintegration/src/FSharp.Editor/Classification/ClassificationService.fs

@@ -158,7 +158,7 @@ type internal FSharpClassificationService
             asyncMaybe {
                 use _logBlock = Logger.LogBlock(LogEditorFunctionId.Classification_Semantic)
 
-                let! _, _, projectOptions = projectInfoManager.TryGetOptionsForDocumentOrProject(document, cancellationToken)
+                let! _, _, projectOptions = projectInfoManager.TryGetOptionsForDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
 
                 // If we are trying to get semantic classification for a document that is not open, get the results from the background and cache it.

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

@@ -96,7 +96,7 @@ type internal FSharpAddOpenCodeFixProvider
     override __.RegisterCodeFixesAsync context : Task =
         asyncMaybe {
             let document = context.Document
-            let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken)
+            let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken, userOpName)
             let! sourceText = context.Document.GetTextAsync(context.CancellationToken)
             let! _, parsedInput, checkResults = checker.ParseAndCheckDocument(document, projectOptions, sourceText = sourceText, userOpName = userOpName)
             let line = sourceText.Lines.GetLineFromPosition(context.Span.End)

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

@@ -138,7 +138,7 @@ type internal FSharpImplementInterfaceCodeFixProvider
 
     override __.RegisterCodeFixesAsync context : Task =
         asyncMaybe {
-            let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(context.Document, context.CancellationToken)
+            let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(context.Document, context.CancellationToken, userOpName)
             let cancellationToken = context.CancellationToken
             let! sourceText = context.Document.GetTextAsync(cancellationToken)
             let! _, parsedInput, checkFileResults = checker.ParseAndCheckDocument(context.Document, projectOptions, sourceText = sourceText, userOpName = userOpName)

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

@@ -22,6 +22,7 @@ type internal FSharpRemoveUnusedOpensCodeFixProvider
         projectInfoManager: FSharpProjectOptionsManager
     ) =
     inherit CodeFixProvider()
+    let userOpName = "FSharpRemoveUnusedOpensCodeFixProvider"
     let fixableDiagnosticIds = [FSharpIDEDiagnosticIds.RemoveUnnecessaryImportsDiagnosticId]
 
     let createCodeFix (title: string, context: CodeFixContext) =
@@ -32,7 +33,7 @@ type internal FSharpRemoveUnusedOpensCodeFixProvider
                     let document = context.Document
                     let! sourceText = document.GetTextAsync()
                     let checker = checkerProvider.Checker
-                    let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken)
+                    let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken, userOpName)
                     let! unusedOpens = UnusedOpensDiagnosticAnalyzer.GetUnusedOpenRanges(document, projectOptions, checker)
                     let changes =
                         unusedOpens

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

@@ -57,7 +57,7 @@ type internal FSharpRenameUnusedValueCodeFixProvider
             // We have to use the additional check for backtickes because `IsOperatorOrBacktickedName` operates on display names
             // where backtickes are replaced with parens.
             if not (PrettyNaming.IsOperatorOrBacktickedName ident) && not (ident.StartsWith "``") then
-                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken)
+                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken, userOpName)
                 let! _, _, checkResults = checker.ParseAndCheckDocument(document, projectOptions, sourceText = sourceText, userOpName=userOpName)
                 let m = RoslynHelpers.TextSpanToFSharpRange(document.FilePath, context.Span, sourceText)
                 let defines = CompilerEnvironment.GetCompilationDefinesForEditing parsingOptions

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

@@ -33,7 +33,7 @@ type internal FSharpReplaceWithSuggestionCodeFixProvider
             do! Option.guard settings.CodeFixes.SuggestNamesForErrors
 
             let document = context.Document
-            let! _, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken)
+            let! _, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken, userOpName)
             let! parseFileResults, _, checkFileResults = checker.ParseAndCheckDocument(document, projectOptions, userOpName=userOpName)
 
             // This is all needed to get a declaration list

vsintegration/src/FSharp.Editor/CodeLens/FSharpCodeLensService.fs

@@ -52,6 +52,7 @@ type internal FSharpCodeLensService
     ) as self =
 
     let lineLens = codeLens
+    let userOpName = "FSharpCodeLensService"
 
     let visit pos parseTree = 
         AstTraversal.Traverse(pos, parseTree, { new AstTraversal.AstVisitorBase<_>() with 
@@ -154,7 +155,7 @@ type internal FSharpCodeLensService
             logInfof "Rechecking code due to buffer edit!"
 #endif
             let! document = workspace.CurrentSolution.GetDocument(documentId.Value) |> Option.ofObj
-            let! _, options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, bufferChangedCts.Token)
+            let! _, options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, bufferChangedCts.Token, userOpName)
             let! _, parsedInput, checkFileResults = checker.ParseAndCheckDocument(document, options, "LineLens", allowStaleResults=true)
 #if DEBUG
             logInfof "Getting uses of all symbols!"

vsintegration/src/FSharp.Editor/Commands/HelpContextService.fs

@@ -98,7 +98,7 @@ type internal FSharpHelpContextService
 
         member this.GetHelpTermAsync(document, textSpan, cancellationToken) = 
             asyncMaybe {
-                let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken)
                 let defines = projectInfoManager.GetCompilationDefinesForEditingDocument(document)  

vsintegration/src/FSharp.Editor/Commands/XmlDocCommandService.fs

@@ -67,7 +67,7 @@ type internal XmlDocCommandFilter
                                 // XmlDocable line #1 are 1-based, editor is 0-based
                                 let curLineNum = wpfTextView.Caret.Position.BufferPosition.GetContainingLine().LineNumber + 1
                                 let! document = document.Value
-                                let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, CancellationToken.None)
+                                let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, CancellationToken.None, userOpName)
                                 let! sourceText = document.GetTextAsync(CancellationToken.None)
                                 let! parsedInput = checker.ParseDocument(document, parsingOptions, sourceText, userOpName)
                                 let xmlDocables = XmlDocParser.getXmlDocables (sourceText.ToFSharpSourceText(), Some parsedInput) 

vsintegration/src/FSharp.Editor/Completion/CompletionProvider.fs

@@ -228,7 +228,7 @@ type internal FSharpCompletionProvider
             let! sourceText = context.Document.GetTextAsync(context.CancellationToken)
             let defines = projectInfoManager.GetCompilationDefinesForEditingDocument(document)
             do! Option.guard (CompletionUtils.shouldProvideCompletion(document.Id, document.FilePath, defines, sourceText, context.Position))
-            let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken)
+            let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, context.CancellationToken, userOpName)
             let! textVersion = context.Document.GetTextVersionAsync(context.CancellationToken)
             let getAllSymbols(fileCheckResults: FSharpCheckFileResults) =
                 if settings.IntelliSense.IncludeSymbolsFromUnopenedNamespacesOrModules
@@ -298,7 +298,7 @@ type internal FSharpCompletionProvider
                     let! sourceText = document.GetTextAsync(cancellationToken)
                     let textWithItemCommitted = sourceText.WithChanges(TextChange(item.Span, nameInCode))
                     let line = sourceText.Lines.GetLineFromPosition(item.Span.Start)
-                    let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                    let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                     let! parsedInput = checker.ParseDocument(document, parsingOptions, sourceText, userOpName)
                     let fullNameIdents = fullName |> Option.map (fun x -> x.Split '.') |> Option.defaultValue [||]
 

vsintegration/src/FSharp.Editor/Completion/SignatureHelp.fs

@@ -197,7 +197,7 @@ type internal FSharpSignatureHelpProvider
         member this.GetItemsAsync(document, position, triggerInfo, cancellationToken) = 
             asyncMaybe {
               try
-                let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! _parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken)
 

vsintegration/src/FSharp.Editor/Debugging/BreakpointResolutionService.fs

@@ -44,7 +44,7 @@ type internal FSharpBreakpointResolutionService
     interface IFSharpBreakpointResolutionService with
         member this.ResolveBreakpointAsync(document: Document, textSpan: TextSpan, cancellationToken: CancellationToken): Task<FSharpBreakpointResolutionResult> =
             asyncMaybe {
-                let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! parsingOptions, _options = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! range = FSharpBreakpointResolutionService.GetBreakpointLocation(checkerProvider.Checker, sourceText, document.Name, textSpan, parsingOptions)
                 let! span = RoslynHelpers.TryFSharpRangeToTextSpan(sourceText, range)

vsintegration/src/FSharp.Editor/Diagnostics/DocumentDiagnosticAnalyzer.fs

@@ -112,7 +112,7 @@ type internal FSharpDocumentDiagnosticAnalyzer [<ImportingConstructor>] () =
         member this.AnalyzeSyntaxAsync(document: Document, cancellationToken: CancellationToken): Task<ImmutableArray<Diagnostic>> =
             let projectInfoManager = getProjectInfoManager document
             asyncMaybe {
-                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken)
                 return! 
@@ -125,7 +125,7 @@ type internal FSharpDocumentDiagnosticAnalyzer [<ImportingConstructor>] () =
         member this.AnalyzeSemanticsAsync(document: Document, cancellationToken: CancellationToken): Task<ImmutableArray<Diagnostic>> =
             let projectInfoManager = getProjectInfoManager document
             asyncMaybe {
-                let! parsingOptions, _, projectOptions = projectInfoManager.TryGetOptionsForDocumentOrProject(document, cancellationToken) 
+                let! parsingOptions, _, projectOptions = projectInfoManager.TryGetOptionsForDocumentOrProject(document, cancellationToken, userOpName) 
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken)
                 if document.Project.Name <> FSharpConstants.FSharpMiscellaneousFilesName || isScriptFile document.FilePath then

vsintegration/src/FSharp.Editor/Diagnostics/SimplifyNameDiagnosticAnalyzer.fs

@@ -41,7 +41,7 @@ type internal SimplifyNameDiagnosticAnalyzer [<ImportingConstructor>] () =
                 do! Option.guard document.FSharpOptions.CodeFixes.SimplifyName
                 do Trace.TraceInformation("{0:n3} (start) SimplifyName", DateTime.Now.TimeOfDay.TotalSeconds)
                 do! Async.Sleep DefaultTuning.SimplifyNameInitialDelay |> liftAsync 
-                let! _parsingOptions, projectOptions = getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! _parsingOptions, projectOptions = getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken)
                 let textVersionHash = textVersion.GetHashCode()
                 let! _ = guard.WaitAsync(cancellationToken) |> Async.AwaitTask |> liftAsync

vsintegration/src/FSharp.Editor/Diagnostics/UnusedDeclarationsAnalyzer.fs

@@ -31,7 +31,7 @@ type internal UnusedDeclarationsAnalyzer [<ImportingConstructor>] () =
 
                 do Trace.TraceInformation("{0:n3} (start) UnusedDeclarationsAnalyzer", DateTime.Now.TimeOfDay.TotalSeconds)
                 do! Async.Sleep DefaultTuning.UnusedDeclarationsAnalyzerInitialDelay |> liftAsync // be less intrusive, give other work priority most of the time
-                match! getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken) with
+                match! getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName) with
                 | (_parsingOptions, projectOptions) ->
                     let! sourceText = document.GetTextAsync()
                     let checker = getChecker document

vsintegration/src/FSharp.Editor/Diagnostics/UnusedOpensDiagnosticAnalyzer.fs

@@ -51,7 +51,7 @@ type internal UnusedOpensDiagnosticAnalyzer [<ImportingConstructor>] () =
             asyncMaybe {
                 do Trace.TraceInformation("{0:n3} (start) UnusedOpensAnalyzer", DateTime.Now.TimeOfDay.TotalSeconds)
                 do! Async.Sleep DefaultTuning.UnusedOpensAnalyzerInitialDelay |> liftAsync // be less intrusive, give other work priority most of the time
-                let! _parsingOptions, projectOptions = getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! _parsingOptions, projectOptions = getProjectInfoManager(document).TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync()
                 let checker = getChecker document
                 let! unusedOpens = UnusedOpensDiagnosticAnalyzer.GetUnusedOpenRanges(document, projectOptions, checker)

vsintegration/src/FSharp.Editor/DocumentHighlights/DocumentHighlightsService.fs

@@ -75,7 +75,7 @@ type internal FSharpDocumentHighlightsService [<ImportingConstructor>] (checkerP
     interface IFSharpDocumentHighlightsService with
         member __.GetDocumentHighlightsAsync(document, position, _documentsToSearch, cancellationToken) : Task<ImmutableArray<FSharpDocumentHighlights>> =
             asyncMaybe {
-                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken)
+                let! parsingOptions, projectOptions = projectInfoManager.TryGetOptionsForEditingDocumentOrProject(document, cancellationToken, userOpName)
                 let! sourceText = document.GetTextAsync(cancellationToken)
                 let! textVersion = document.GetTextVersionAsync(cancellationToken) 
                 let defines = CompilerEnvironment.GetCompilationDefinesForEditing parsingOptions