Merge pull request #59201 from ryzngard/features/rename_ui_rework

Features/rename_UI_rework Merge Main

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
     "files.associations": {
         "**/eng/pipelines/*.yml": "azure-pipelines"
-    }
+    },
+    "omnisharp.defaultLaunchSolution": "Compilers.sln",
 }

Roslyn.sln

@@ -372,8 +372,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.CodeAnalysis.Comp
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Installer.Package", "src\Setup\Installer\Installer.Package.csproj", "{6A68FDF9-24B3-4CB6-A808-96BF50D1BCE5}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.CodeAnalysis.Workspaces.Desktop.UnitTests", "src\Workspaces\DesktopTest\Microsoft.CodeAnalysis.Workspaces.Desktop.UnitTests.csproj", "{23405307-7EFF-4774-8B11-8F5885439761}"
-EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Insertion", "Insertion", "{AFA5F921-0650-45E8-B293-51A0BB89DEA0}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DevDivInsertionFiles", "src\Setup\DevDivInsertionFiles\DevDivInsertionFiles.csproj", "{6362616E-6A47-48F0-9EE0-27800B306ACB}"
@@ -1148,10 +1146,6 @@ Global
 		{6A68FDF9-24B3-4CB6-A808-96BF50D1BCE5}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6A68FDF9-24B3-4CB6-A808-96BF50D1BCE5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6A68FDF9-24B3-4CB6-A808-96BF50D1BCE5}.Release|Any CPU.Build.0 = Release|Any CPU
-		{23405307-7EFF-4774-8B11-8F5885439761}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{23405307-7EFF-4774-8B11-8F5885439761}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{23405307-7EFF-4774-8B11-8F5885439761}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{23405307-7EFF-4774-8B11-8F5885439761}.Release|Any CPU.Build.0 = Release|Any CPU
 		{6362616E-6A47-48F0-9EE0-27800B306ACB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{6362616E-6A47-48F0-9EE0-27800B306ACB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6362616E-6A47-48F0-9EE0-27800B306ACB}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -1479,7 +1473,6 @@ Global
 		{B9843F65-262E-4F40-A0BC-2CBEF7563A44} = {C52D8057-43AF-40E6-A01B-6CDBB7301985}
 		{03607817-6800-40B6-BEAA-D6F437CD62B7} = {BE25E872-1667-4649-9D19-96B83E75A44E}
 		{6A68FDF9-24B3-4CB6-A808-96BF50D1BCE5} = {BE25E872-1667-4649-9D19-96B83E75A44E}
-		{23405307-7EFF-4774-8B11-8F5885439761} = {55A62CFA-1155-46F1-ADF3-BEEE51B58AB5}
 		{AFA5F921-0650-45E8-B293-51A0BB89DEA0} = {8DBA5174-B0AA-4561-82B1-A46607697753}
 		{6362616E-6A47-48F0-9EE0-27800B306ACB} = {AFA5F921-0650-45E8-B293-51A0BB89DEA0}
 		{8977A560-45C2-4EC2-A849-97335B382C74} = {FD0FAF5F-1DED-485C-99FA-84B97F3A8EEC}

azure-pipelines-integration-corehost.yml

@@ -12,33 +12,46 @@ trigger:
 # Automatic building of all PRs is disabled in the pipeline's trigger page.
 # See https://docs.microsoft.com/en-us/azure/devops/pipelines/repos/github?view=azure-devops&tabs=yaml#comment-triggers
 pr:
-- main
-- main-vs-deps
-- release/*
-- features/*
-- demos/*
-
-variables:
-  - name: XUNIT_LOGS
-    value: $(Build.SourcesDirectory)\artifacts\log\$(_configuration)
+  branches:
+    include:
+    - main
+    - main-vs-deps
+    - release/*
+    - features/*
+    - demos/*
+  paths:
+    exclude:
+      - docs/*
+      - .github/*
 
 jobs:
-- job: VS_Integration_CoreHost
+- job: VS_Integration_CoreHost_Debug
   pool:
     name: NetCore1ESPool-Public
     demands: ImageOverride -equals $(queueName)
-  strategy:
-    maxParallel: 2
-    matrix:
-      debug:
-        _configuration: Debug
-      release:
-        _configuration: Release
   timeoutInMinutes: 135
-
+  variables:
+    - name: XUNIT_LOGS
+      value: $(Build.SourcesDirectory)\artifacts\log\Debug
   steps:
     - template: eng/pipelines/test-integration-job.yml
       parameters:
-        configuration: $(_configuration)
+        configuration: Debug
         oop64bit: true
         oopCoreClr: true
+
+- ${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
+  - job: VS_Integration_CoreHost_Release
+    pool:
+      name: NetCore1ESPool-Public
+      demands: ImageOverride -equals $(queueName)
+    timeoutInMinutes: 135
+    variables:
+      - name: XUNIT_LOGS
+        value: $(Build.SourcesDirectory)\artifacts\log\Debug
+    steps:
+      - template: eng/pipelines/test-integration-job.yml
+        parameters:
+          configuration: Release
+          oop64bit: true
+          oopCoreClr: true

azure-pipelines-integration-dartlab.yml

@@ -1,6 +1,7 @@
 # Roslyn integration test pipeline for validating against branch builds of VS.
 
 trigger: none # Manual trigger for now
+pr: none # Manual trigger for now
 
 resources:
   pipelines:
@@ -15,6 +16,13 @@ resources:
     type: git
     name: DartLab.Templates
     ref: refs/heads/dev/bradwhit/RemoveCheckoutNone
+  - repository: RoslynMirror
+    endpoint: dnceng/internal dotnet-roslyn
+    type: git
+    name: internal/dotnet-roslyn
+    ref: $(Build.SourceBranchName)
+    trigger:
+    - main
 
 variables:
 - name: XUNIT_LOGS
@@ -54,6 +62,7 @@ stages:
         filePath: $(DartLab.Path)\Scripts\VisualStudio\Build\Get-VisualStudioDropName.ps1
         arguments: -DropNamePrefix 'Products' -VstsDropUrlsJson '$(Pipeline.Workspace)\VisualStudioBuildUnderTest\BuildArtifacts\VstsDropUrls.json' -OutVariableName 'VisualStudio.BuildUnderTest.ProductsDropName'
     deployAndRunTestsStepList:
+    - checkout: RoslynMirror
     - template: eng/pipelines/test-integration-job.yml
       parameters:
         configuration: $(_configuration)

azure-pipelines-integration.yml

@@ -8,41 +8,77 @@ trigger:
 
 # Branches that trigger builds on PR
 pr:
-- main
-- main-vs-deps
-- release/*
-- features/*
-- demos/*
-
-variables:
-  - name: XUNIT_LOGS
-    value: $(Build.SourcesDirectory)\artifacts\log\$(_configuration)
+  branches:
+    include:
+    - main
+    - main-vs-deps
+    - release/*
+    - features/*
+    - demos/*
+  paths:
+    exclude:
+      - docs/*
+      - .github/*
 
 jobs:
-- job: VS_Integration
+- ${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
+  - job: VS_Integration_Debug_32
+    pool:
+      name: $(poolName)
+      demands: ImageOverride -equals $(queueName)
+    timeoutInMinutes: 135
+    variables:
+      - name: XUNIT_LOGS
+        value: $(Build.SourcesDirectory)\artifacts\log\Debug
+    steps:
+      - template: eng/pipelines/test-integration-job.yml
+        parameters:
+          configuration: Debug
+          oop64bit: false
+          lspEditor: false
+
+- job: VS_Integration_Debug_64
   pool:
     name: $(poolName)
     demands: ImageOverride -equals $(queueName)
-  strategy:
-    maxParallel: 4
-    matrix:
-      debug_32:
-        _configuration: Debug
-        _oop64bit: false
-      debug_64:
-        _configuration: Debug
-        _oop64bit: true
-      release_32:
-        _configuration: Release
-        _oop64bit: false
-      release_64:
-        _configuration: Release
-        _oop64bit: true
   timeoutInMinutes: 135
+  variables:
+    - name: XUNIT_LOGS
+      value: $(Build.SourcesDirectory)\artifacts\log\Debug
+  steps:
+    - template: eng/pipelines/test-integration-job.yml
+      parameters:
+        configuration: Debug
+        oop64bit: true
+        lspEditor: false
 
+- job: VS_Integration_Release_32
+  pool:
+    name: $(poolName)
+    demands: ImageOverride -equals $(queueName)
+  timeoutInMinutes: 135
+  variables:
+    - name: XUNIT_LOGS
+      value: $(Build.SourcesDirectory)\artifacts\log\Release
   steps:
     - template: eng/pipelines/test-integration-job.yml
       parameters:
-        configuration: $(_configuration)
-        oop64bit: $(_oop64bit)
+        configuration: Release
+        oop64bit: false
         lspEditor: false
+
+- ${{ if ne(variables['Build.Reason'], 'PullRequest') }}:
+  - job: VS_Integration_Release_64
+    pool:
+      name: $(poolName)
+      demands: ImageOverride -equals $(queueName)
+    timeoutInMinutes: 135
+    variables:
+      - name: XUNIT_LOGS
+        value: $(Build.SourcesDirectory)\artifacts\log\Release
+    steps:
+      - template: eng/pipelines/test-integration-job.yml
+        parameters:
+          configuration: Release
+          oop64bit: true
+          lspEditor: false

azure-pipelines-official.yml

@@ -66,6 +66,9 @@ stages:
 
 - stage: build
   displayName: Build and Test
+  pool:
+    name: NetCore1ESPool-Svc-Internal
+    demands: ImageOverride -equals Build.Server.Amd64.VS2019
 
   jobs:
   - ${{ if eq(variables['Build.SourceBranch'], 'refs/heads/release/dev17.1-vs-deps') }}:
@@ -81,9 +84,6 @@ stages:
   - job: OfficialBuild
     displayName: Official Build
     timeoutInMinutes: 360
-    pool:
-      name: NetCore1ESPool-Internal
-      demands: ImageOverride -equals Build.Server.Amd64.VS2019
 
     steps:
     - powershell: Write-Host "##vso[task.setvariable variable=SourceBranchName]$('$(Build.SourceBranch)'.Substring('refs/heads/'.Length))"
@@ -296,7 +296,7 @@ stages:
       dependsOn:
         - OfficialBuild
       pool:
-        vmImage: vs2017-win2016
+        vmImage: windows-2019
 
 - stage: insert
   dependsOn:

azure-pipelines.yml

@@ -8,11 +8,17 @@ trigger:
 
 # Branches that trigger builds on PR
 pr:
-- main
-- main-vs-deps
-- release/*
-- features/*
-- demos/*
+  branches:
+    include:
+    - main
+    - main-vs-deps
+    - release/*
+    - features/*
+    - demos/*
+  paths:
+    exclude:
+      - docs/*
+      - .github/*
 
 # Windows Build and Test Jobs
 jobs:
@@ -149,7 +155,7 @@ jobs:
     buildJobName: Build_Unix_Debug
     testArtifactName: Transport_Artifacts_Unix_Debug
     configuration: Debug
-    testArguments: --testCoreClr --helixQueueName OSX.1014.Amd64.Open
+    testArguments: --testCoreClr --helixQueueName OSX.1015.Amd64.Open
 
 - template: eng/common/templates/jobs/source-build.yml
 

docs/Language Feature Status.md

@@ -12,18 +12,21 @@ efforts behind them.
 | ------- | ------ | ----- | --------- | -------- | --------- |
 | [Newlines in interpolations](https://github.com/dotnet/csharplang/issues/4935) | main | [Merged in 17.1p1](https://github.com/dotnet/roslyn/issues/57154) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [jcouv](https://github.com/jcouv), [chsienki](https://github.com/chsienki) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
 | [List patterns](https://github.com/dotnet/csharplang/issues/3435) | [list-patterns](https://github.com/dotnet/roslyn/tree/features/list-patterns) | [Merged in 17.1p2](https://github.com/dotnet/roslyn/issues/51289) | [alrz](https://github.com/alrz) | [jcouv](https://github.com/jcouv), [333fred](https://github.com/333fred) | [333fred](https://github.com/333fred) |
-| [Parameter null-checking](https://github.com/dotnet/csharplang/issues/2145) | [param-nullchecking](https://github.com/dotnet/roslyn/tree/features/param-nullchecking) | [In Progress](https://github.com/dotnet/roslyn/issues/36024) | [RikkiGibson](https://github.com/RikkiGibson), [fayrose](https://github.com/fayrose) | [cston](https://github.com/cston), [chsienki](https://github.com/chsienki) | [jaredpar](https://github.com/jaredpar) |
-| [Raw string literals](https://github.com/dotnet/csharplang/issues/4304) | [RawStringLiterals](https://github.com/dotnet/roslyn/tree/features/features/RawStringLiterals) | [In Progress](https://github.com/dotnet/roslyn/issues/55306) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [jcouv](https://github.com/jcouv) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
+| [Parameter null-checking](https://github.com/dotnet/csharplang/issues/2145) | [param-nullchecking](https://github.com/dotnet/roslyn/tree/features/param-nullchecking) | [Merged in 17.1p3](https://github.com/dotnet/roslyn/issues/36024) | [RikkiGibson](https://github.com/RikkiGibson), [fayrose](https://github.com/fayrose) | [cston](https://github.com/cston), [chsienki](https://github.com/chsienki) | [jaredpar](https://github.com/jaredpar) |
+| [Raw string literals](https://github.com/dotnet/csharplang/issues/4304) | [RawStringLiterals](https://github.com/dotnet/roslyn/tree/features/RawStringLiterals) | [In Progress](https://github.com/dotnet/roslyn/issues/55306) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [jcouv](https://github.com/jcouv) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
 | [nameof(parameter)](https://github.com/dotnet/csharplang/issues/373) | main | [In Progress](https://github.com/dotnet/roslyn/issues/40524) | [jcouv](https://github.com/jcouv) | TBD | [jcouv](https://github.com/jcouv) |
 | [Relax ordering of `ref` and `partial` modifiers](https://github.com/dotnet/csharplang/issues/946) | [ref-partial](https://github.com/dotnet/roslyn/tree/features/ref-partial) | In Progress | [alrz](https://github.com/alrz) | [gafter](https://github.com/gafter) | [jcouv](https://github.com/jcouv) |
 | [Generic attributes](https://github.com/dotnet/csharplang/issues/124) | [generic-attributes](https://github.com/dotnet/roslyn/tree/features/generic-attributes) | [Merged into 17.0p4 (preview langver)](https://github.com/dotnet/roslyn/issues/36285) | [AviAvni](https://github.com/AviAvni) | [RikkiGibson](https://github.com/RikkiGibson), [jcouv](https://github.com/jcouv) | [mattwar](https://github.com/mattwar) |
 | [Default in deconstruction](https://github.com/dotnet/roslyn/pull/25562) | [decon-default](https://github.com/dotnet/roslyn/tree/features/decon-default) | [Implemented](https://github.com/dotnet/roslyn/issues/25559) | [jcouv](https://github.com/jcouv) | [gafter](https://github.com/gafter) | [jcouv](https://github.com/jcouv) |
-| [Semi-auto-properties](https://github.com/dotnet/csharplang/issues/140) | [semi-auto-properties](https://github.com/dotnet/roslyn/tree/features/features/semi-auto-properties) | [In Progress](https://github.com/dotnet/roslyn/issues/57012) | [Youssef1313](https://github.com/Youssef1313) | TBD | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
+| [Semi-auto-properties](https://github.com/dotnet/csharplang/issues/140) | [semi-auto-props](https://github.com/dotnet/roslyn/tree/features/semi-auto-props) | [In Progress](https://github.com/dotnet/roslyn/issues/57012) | [Youssef1313](https://github.com/Youssef1313) | [333fred](https://github.com/333fred), [RikkiGibson](https://github.com/RikkiGibson) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
 | [Required members](https://github.com/dotnet/csharplang/issues/3630) | [required-members](https://github.com/dotnet/roslyn/tree/features/required-members) | [In Progress](https://github.com/dotnet/roslyn/issues/57046) | [333fred](https://github.com/333fred) | [jcouv](https://github.com/jcouv), [RikkiGibson](https://github.com/RikkiGibson) | [333fred](https://github.com/333fred) |
-| [Top Level statement attribute specifiers](https://github.com/dotnet/csharplang/issues/5045) | [main-attributes](https://github.com/dotnet/roslyn/tree/features/features/main-attributes) | [In Progress](https://github.com/dotnet/roslyn/issues/57047) | [chsienki](https://github.com/chsienki) | TBD | [jaredpar](https://github.com/jaredpar) |
-| [Primary Constructors](https://github.com/dotnet/csharplang/issues/2691) | [primary-constructors](https://github.com/dotnet/roslyn/tree/features/features/primary-constructors) | [In Progress](https://github.com/dotnet/roslyn/issues/57048) | TBD | TBD | [MadsTorgersen](https://github.com/MadsTorgersen) |
-| [Params Span<T> + Stackalloc any array type](https://github.com/dotnet/csharplang/issues/1757) | [params-span](https://github.com/dotnet/roslyn/tree/features/features/params-span) | [In Progress](https://github.com/dotnet/roslyn/issues/57049) | [cston](https://github.com/cston) | TBD | [jaredpar](https://github.com/jaredpar) |
-
+| [Top Level statement attribute specifiers](https://github.com/dotnet/csharplang/issues/5045) | [main-attributes](https://github.com/dotnet/roslyn/tree/features/main-attributes) | [In Progress](https://github.com/dotnet/roslyn/issues/57047) | [chsienki](https://github.com/chsienki) | TBD | [jaredpar](https://github.com/jaredpar) |
+| [Primary Constructors](https://github.com/dotnet/csharplang/issues/2691) | [primary-constructors](https://github.com/dotnet/roslyn/tree/features/primary-constructors) | [In Progress](https://github.com/dotnet/roslyn/issues/57048) | TBD | TBD | [MadsTorgersen](https://github.com/MadsTorgersen) |
+| [Params Span\<T> + Stackalloc any array type](https://github.com/dotnet/csharplang/issues/1757) | [params-span](https://github.com/dotnet/roslyn/tree/features/params-span) | [In Progress](https://github.com/dotnet/roslyn/issues/57049) | [cston](https://github.com/cston) | TBD | [jaredpar](https://github.com/jaredpar) |
+| [Cache delegates for static method group](https://github.com/dotnet/roslyn/issues/5835) | main | [In Progress](https://github.com/dotnet/roslyn/pull/58288) | [pawchen](https://github.com/pawchen) | [AlekseyTs](https://github.com/AlekseyTs), [jcouv](https://github.com/jcouv) | [AlekseyTs](https://github.com/AlekseyTs) |
+| [Switch on ReadOnlySpan<char>](https://github.com/dotnet/csharplang/issues/1881) | main | [In Progress](https://github.com/dotnet/roslyn/pull/44388) | [YairHalberstadt ](https://github.com/YairHalberstadt) | [cston](https://github.com/cston), [RikkiGibson](https://github.com/RikkiGibson) | [jcouv](https://github.com/jcouv) |
+| [nameof accessing instance memebers](https://github.com/dotnet/roslyn/issues/40229) | main | [In Progress](https://github.com/dotnet/roslyn/pull/48754) | [YairHalberstadt ](https://github.com/YairHalberstadt) | [333fred](https://github.com/333fred), [AlekseyTs](https://github.com/AlekseyTs)  | [333fred](https://github.com/333fred) |
+| [Utf8 String Literals](https://github.com/dotnet/csharplang/issues/184) | [Utf8StringLiterals](https://github.com/dotnet/roslyn/tree/features/Utf8StringLiterals) | [In Progress](https://github.com/dotnet/roslyn/issues/58848) | [AlekseyTs](https://github.com/AlekseyTs) | [cston](https://github.com/cston), [RikkiGibson](https://github.com/RikkiGibson) | [MadsTorgersen](https://github.com/MadsTorgersen) |
 
 # C# 10.0
 

docs/compilers/CSharp/Compiler Breaking Changes - DotNet 6.md

@@ -108,3 +108,24 @@ These are _function_type_conversions_.
         }
     }
     ```
+
+4. In Visual Studio 17.1, `struct` type declarations with field initializers must include an explicitly declared constructor. Additionally, all fields must be definitely assigned in `struct` instance constructors that do not have a `: this()` initializer so any previously unassigned fields must be assigned from the added constructor or from field initializers.
+
+    For instance, the following results in an error in 17.1:
+    ```csharp
+    struct S
+    {
+        int X = 1; // error: struct with field initializers must include an explicitly declared constructor
+        int Y;
+    }
+    ```
+
+    The error could be resolved by adding a constructor and assigning the other field.
+    ```csharp
+    struct S
+    {
+        int X = 1;
+        int Y;
+        public S() { Y = 0; } // ok
+    }
+    ```

docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md

@@ -70,10 +70,10 @@ Those types can be used with implicit Index indexer and list patterns.
 5. Starting with Visual Studio 17.1, format specifiers in interpolated strings can not contain curly braces (either `{` or `}`). In previous versions `{{` was interpreted as an escaped `{` and `}}` was interpreted as an escaped `}` char in the format specifier. Now the first `}` char in a format specifier ends the interpolation, and any `{` char is an error.
 https://github.com/dotnet/roslyn/issues/5775
 
-```csharp
-using System;
+    ```csharp
+    using System;
 
-Console.WriteLine($"{{{12:X}}}");
+    Console.WriteLine($"{{{12:X}}}");
 
-//prints now: "{C}" - not "{X}}"
-```
+    //prints now: "{C}" - not "{X}}"
+    ```