Merge master to features/covariant-returns

.vscode/tasks.json

@@ -5,26 +5,35 @@
   "tasks": [
     {
         "label": "build",
-        "command": "./build.cmd",
+        "command": "./build.sh",
         "type": "shell",
         "args": [
         ],
+        "windows": {
+          "command": "./build.cmd",
+        },
         "problemMatcher": "$msCompile",
         "group": "build"
     },
     {
         "label": "build skip analyzers",
-        "command": "./build.cmd",
+        "command": "./build.sh",
         "type": "shell",
         "args": [
-          "-skipAnalyzers"
+          "--skipAnalyzers"
         ],
+        "windows": {
+          "command": "./build.cmd",
+          "args": [
+            "-skipAnalyzers"
+          ],
+        },
         "problemMatcher": "$msCompile",
         "group": "build"
     },
     {
         "label": "build csc skip analyzers",
-        "command": "dotnet",
+        "command": "./.dotnet/dotnet",
         "type": "shell",
         "args": [
           "msbuild",
@@ -36,17 +45,60 @@
         "group": "build"
     },
     {
-        "label": "build directory skip analyzers",
-        "command": "dotnet",
+        "label": "build current project skip analyzers",
+        "command": "./.dotnet/dotnet",
         "type": "shell",
         "args": [
-          "msbuild",
-          "-p:UseRoslynAnalyzers=false",
-          "-p:GenerateFullPaths=true",
-          "${fileDirname}"
+          "pwsh",
+          "${workspaceRoot}/scripts/vscode-build.ps1",
+          "-filePath",
+          "${file}"
         ],
         "problemMatcher": "$msCompile",
         "group": "build"
+    },
+    {
+        "label": "generate compiler code",
+        "command": "./.dotnet/dotnet",
+        "type": "shell",
+        "args": [
+          "pwsh",
+          "${workspaceRoot}/eng/generate-compiler-code.ps1"
+        ],
+        "problemMatcher": "$msCompile",
+        "group": "build"
+    },
+    {
+        "label": "run tests in current file (netcoreapp3.1)",
+        "command": "./.dotnet/dotnet",
+        "type": "shell",
+        "args": [
+          "pwsh",
+          "${workspaceRoot}/scripts/vscode-run-tests.ps1",
+          "-filePath",
+          "${file}",
+          "-framework",
+          "netcoreapp3.1",
+          "-filter",
+          "${fileBasenameNoExtension}"
+        ],
+        "problemMatcher": "$msCompile",
+        "group": "test"
+    },
+    {
+        "label": "run tests in current project (netcoreapp3.1)",
+        "command": "./.dotnet/dotnet",
+        "type": "shell",
+        "args": [
+          "pwsh",
+          "${workspaceRoot}/scripts/vscode-run-tests.ps1",
+          "-filePath",
+          "${file}",
+          "-framework",
+          "netcoreapp3.1"
+        ],
+        "problemMatcher": "$msCompile",
+        "group": "test"
     }
   ]
 }

docs/Language Feature Status.md

@@ -28,6 +28,7 @@ efforts behind them.
 | [Covariant](https://github.com/dotnet/csharplang/issues/49) [Returns](https://github.com/dotnet/csharplang/issues/2844) | [features/covariant-returns](https://github.com/dotnet/roslyn/tree/features/covariant-returns) | [In Progress](https://github.com/dotnet/roslyn/issues/43188) | [gafter](https://github.com/gafter)                                     | TBD,TBD                                                                            | [gafter](https://github.com/gafter) |
 | [Extension GetEnumerator](https://github.com/dotnet/csharplang/issues/3194)                        | [features/extension-foreach](https://github.com/dotnet/roslyn/tree/features/extension-foreach)                 | [In Progress](https://github.com/dotnet/roslyn/issues/43184) | [YairHalberstadt](https://github.com/YairHalberstadt)                        | [333fred](https://github.com/333fred)                                              | [333fred](https://github.com/333fred) |
 | [Module initializers](https://github.com/RikkiGibson/csharplang/blob/module-initializers/proposals/module-initializers.md) | TBD                                                                                    | [In progress / design](https://github.com/dotnet/roslyn/issues/40500)                                         | [RikkiGibson](https://github.com/RikkiGibson) [jnm2](https://github.com/jnm2)| [AlekseyTs](https://github.com/AlekseyTs)                                          | [gafter](https://github.com/gafter) |
+| [Extending Partial](https://github.com/jaredpar/csharplang/blob/partial/proposals/extending-partial-methods.md) | [features/partial-methods](https://github.com/dotnet/roslyn/tree/features/partial-methods)       | In-Progress                                                  | [RikkiGibson](https://github.com/RikkiGibson)                                | [chsienki](https://github.com/chsienki)                                            | [jaredpar](https://github.com/jaredpar) |
 
 
 # C# 8.0

docs/compilers/Design/Notes/10-29-19.md → docs/compilers/API Notes/10-29-19.md

@@ -1,3 +1,12 @@
+## API Review Notes for September 30th, 2019
+
+### Changes reviewed
+Starting commit: `38c90f8401f9e3ee5fb7c82aac36f6b85fdda979`
+
+Ending Commit: `b8a5611e3db4f7ac3b5e1404b129304b5baf843e`
+
+### Notes
+
 IVariableDeclarationOperation:
  - What does scripting do for using local declarations in IOperation?
 

docs/compilers/API Notes/4-15-20.md

@@ -0,0 +1,27 @@
+## API Review Notes for April 15th, 2020
+
+### Changes reviewed
+Starting commit: `c827247a767c0c434dcb77496038b163b9e011da`
+
+Ending Commit: `3375a7b209d1f590940af043e9e39f2cbb503845`
+
+### Notes
+
+#### Everything but Source Generators:
+
+* `Project.RemoveDocuments`: Everything else in this type uses `IEnumerable<T>`, not `ImmutableArray<T>`. If we could start again from day 1 we might make everything that, but given that everything today uses the former, we should do so here. This applies to the overloads on `Solution` as well.
+* `Solution.RemoveAdditonalDocuments/RemoveAnalyzerConfigDocuments`: We added these to `Solution`, but not to project, even though that also has the invididual `Remove` methods. We should add them to `Project` as well.
+* `DocumentOptionSet.GetOption`: This API was added as a `new` on the concrete `DocumentOptionSet` to cover a change when we moved the implementation up to `OptionSet` and made the method non-virtual. This is not actually a breaking change, so we should remove this.
+
+#### Source Generators:
+
+As a general note, changes that we make here are _not_ considered breaking changes post 16.6.
+However, we did take a broad overview of the API surface and have some notes for @chsienki.
+
+* `GeneratorAttribute`: we should consider adding a `LanguageName` attribute to this type.
+* `InitializationContext`: Rename to something like `SourceGeneratorInitialzationContext` or similar. Current name is ambiguous.
+* `InitializationContext.RegisterForNotifications`:
+    * Naming is inconsistent with existing `Action` ending for analyzer register methods.
+    * `SyntaxReceiverCreator`: all other `RegisterForXAction` methods in analyzers use an `Action` or `Func`, as appropriate. We should consider doing the same here.
+* `ISyntaxReceiver`: This may be redundant with existing APIs.
+* `SourceGeneratorContext`: There is not currently a way to share semantic models and other binding info between source generators. We should design a way for this info to be shared so we can avoid introducing lots of binding from generators.

docs/contributing/Compiler Test Plan.md

@@ -308,6 +308,8 @@ __makeref( x )
 - Interpolated string
 - Tuple literal
 - Tuple
+- Default literal
+- Implicit object creation (target-typed new)
 
 ## Types 
 

docs/contributing/Nullable Annotations.md

@@ -21,12 +21,11 @@ struct SyntaxTrivia {
     }
 }
 ```
-- **DO** use explicit validation such as `RoslynDebug.Assert` or 
-`Contract.ThrowIfNull` to validate state that is passed into the method if it 
-avoids the need for suppressions later in the method.
+- **DO** use explicit validation such as `Debug.Assert` or 
+`Contract.ThrowIfNull` to capture internal program invariants.
 ```cs
 void M1(SyntaxNode node) {
-    RoslynDebug.Assert(node.Parent is object);
+    Debug.Assert(node.Parent is object);
     ...
     M2(node.Parent);
 }

dotnet-tools.json

@@ -2,10 +2,16 @@
   "isRoot": true,
   "tools": {
     "dotnet-format": {
-      "version": "3.2.107801",
+      "version": "3.3.111304",
       "commands": [
         "dotnet-format"
       ]
+    },
+    "powershell": {
+      "version": "7.0.0",
+      "commands": [
+        "pwsh"
+      ]
     }
   }
-}
+}

eng/Version.Details.xml

@@ -3,9 +3,9 @@
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.20213.4">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.20215.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>1a55276ab9d16792cec595ba870df39a9d97d5ca</Sha>
+      <Sha>36fd49bf87b14b78d722179b787e6518b5205518</Sha>
     </Dependency>
     <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="3.7.0-1.20210.7">
       <Uri>https://github.com/dotnet/roslyn</Uri>

eng/Versions.props

@@ -28,9 +28,9 @@
   <PropertyGroup>
     <!-- Versions used by several individual references below -->
     <RoslynDiagnosticsNugetPackageVersion>3.0.0-beta2.20169.3</RoslynDiagnosticsNugetPackageVersion>
-    <CodeStyleLayerCodeAnalysisVersion>3.3.1</CodeStyleLayerCodeAnalysisVersion>
+    <CodeStyleLayerCodeAnalysisVersion>3.6.0-2.final</CodeStyleLayerCodeAnalysisVersion>
     <MicrosoftCodeAnalysisTestingVersion>1.0.1-beta1.20210.2</MicrosoftCodeAnalysisTestingVersion>
-    <CodeStyleAnalyzerVersion>3.6.0-2.20157.5</CodeStyleAnalyzerVersion>
+    <CodeStyleAnalyzerVersion>3.7.0-1.20210.7</CodeStyleAnalyzerVersion>
     <VisualStudioEditorPackagesVersion>16.4.248</VisualStudioEditorPackagesVersion>
     <ILToolsPackageVersion>5.0.0-alpha1.19409.1</ILToolsPackageVersion>
     <MicrosoftVisualStudioLanguageServerPackagesVersion>16.3.27-develop-gdd55e997</MicrosoftVisualStudioLanguageServerPackagesVersion>
@@ -214,7 +214,7 @@
     <xunitVersion>2.4.1-pre.build.4059</xunitVersion>
     <xunitanalyzersVersion>0.10.0</xunitanalyzersVersion>
     <xunitassertVersion>$(xunitVersion)</xunitassertVersion>
-    <XunitCombinatorialVersion>1.2.7</XunitCombinatorialVersion>
+    <XunitCombinatorialVersion>1.3.2</XunitCombinatorialVersion>
     <xunitextensibilitycoreVersion>$(xunitVersion)</xunitextensibilitycoreVersion>
     <xunitrunnerconsoleVersion>2.4.1-pre.build.4059</xunitrunnerconsoleVersion>
     <xunitrunnerwpfVersion>1.0.51</xunitrunnerwpfVersion>
@@ -245,75 +245,6 @@
     <MicrosoftVisualStudioStaticReviewsEmbeddableVersion>0.1.102-alpha</MicrosoftVisualStudioStaticReviewsEmbeddableVersion>
     <MicrosoftBclAsyncInterfacesVersion>1.1.0</MicrosoftBclAsyncInterfacesVersion>
   </PropertyGroup>
-  <!--
-    The following packages are considered implementation details and will not be included
-    in the list of dependencies of Roslyn packages. They won't flow as package references
-    to the projects that reference Roslyn packages.
-  -->
-  <ItemGroup>
-    <PrivateVisualStudioPackage Include="EnvDTE" />
-    <PrivateVisualStudioPackage Include="EnvDTE80" />
-    <PrivateVisualStudioPackage Include="Microsoft.Internal.Performance.CodeMarkers.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.Internal.VisualStudio.Shell.Interop.14.0.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.MSXML" />
-    <PrivateVisualStudioPackage Include="Microsoft.ServiceHub.Client" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.CallHierarchy.Package.Definitions" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.ComponentModelHost" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.CodingConventions" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.CoreUtility" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Debugger.Engine-implementation" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Debugger.Metadata-implementation" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Debugger.UI.Interfaces" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Designer.Interfaces" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Editor" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.GraphModel" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.ImageCatalog" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Imaging" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Language.CallHierarchy" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Language.Intellisense" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Language.NavigateTo.Interfaces" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Language.StandardClassification" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.LanguageServer.Client" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.LiveShare.LanguageServices.Guest" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.LiveShare.WebEditors" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.OLE.Interop" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Progression.CodeSchema" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Progression.Common" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Progression.Interfaces" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.RemoteControl" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.SDK.EmbedInteropTypes" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.15.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Design" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Framework" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Immutable.10.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.9.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.10.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.11.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.12.1.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.14.0.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.15.0.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.15.3.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Shell.Interop.15.7.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Telemetry" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Text.Data" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Text.Logic" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Text.UI" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Text.UI.Wpf" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.TextManager.Interop.10.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.TextManager.Interop.12.0" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.TextManager.Interop.12.1.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.TextManager.Interop.16.0.DesignTime" />
-    <PrivateVisualStudioPackage Include="Microsoft.VisualStudio.Utilities" />
-    <PrivateVisualStudioPackage Include="Microsoft.VSSDK.BuildTools" />
-    <PrivateVisualStudioPackage Include="Newtonsoft.Json" />
-    <PrivateVisualStudioPackage Include="NuGet.VisualStudio" />
-    <PrivateVisualStudioPackage Include="StreamJsonRpc" />
-    <PrivateVisualStudioPackage Include="VSLangProj" />
-    <PrivateVisualStudioPackage Include="VSLangProj2" />
-    <PrivateVisualStudioPackage Include="VSLangProj80" />
-    <PrivateVisualStudioPackage Include="VSLangProj140" />
-    <PrivateVisualStudioPackage Include="VsWebsite.Interop" />
-  </ItemGroup>
   <PropertyGroup>
     <UsingToolPdbConverter>true</UsingToolPdbConverter>
     <UsingToolSymbolUploader>true</UsingToolSymbolUploader>

eng/build-utils.ps1

@@ -25,7 +25,7 @@ function GetProjectOutputBinary([string]$fileName, [string]$projectName = "", [s
 
 function GetPublishData() {
   if (Test-Path variable:global:_PublishData) {
-  return $global:_PublishData
+    return $global:_PublishData
   }
 
   Write-Host "Downloading $PublishDataUrl"
@@ -38,19 +38,19 @@ function GetBranchPublishData([string]$branchName) {
   $data = GetPublishData
 
   if (Get-Member -InputObject $data.branches -Name $branchName) {
-  return $data.branches.$branchName
+    return $data.branches.$branchName
   } else {
-  return $null
+    return $null
   }
 }
 
 function GetReleasePublishData([string]$releaseName) {
   $data = GetPublishData
 
   if (Get-Member -InputObject $data.releases -Name $releaseName) {
-  return $data.releases.$releaseName
+    return $data.releases.$releaseName
   } else {
-  return $null
+    return $null
   }
 }
 
@@ -173,6 +173,33 @@ function Ensure-DotnetSdk() {
   throw "Could not find dotnet executable in $dotnetInstallDir"
 }
 
+# Walks up the source tree, starting at the given file's directory, and returns a FileInfo object for the first .csproj file it finds, if any.
+function Get-ProjectFile([object]$fileInfo) {
+  Push-Location
+
+  Set-Location $fileInfo.Directory
+  try {
+    while ($true) {
+      # search up from the current file for a folder containing a csproj
+      $files = Get-ChildItem *.csproj
+      if ($files) {
+        return $files[0]
+      }
+      else {
+        $location = Get-Location
+        Set-Location ..
+        if ((Get-Location).Path -eq $location.Path) {
+          # our location didn't change. We must be at the drive root, so give up
+          return $null
+        }
+      }
+    }
+  }
+  finally {
+    Pop-Location
+  }
+}
+
 function Get-VersionCore([string]$name, [string]$versionFile) {
   $name = $name.Replace(".", "")
   $name = $name.Replace("-", "")