Merge pull request #520 from github/features/start-page

shana · web-flow · commit d8cdbd7266b3 · 2016-08-29T19:47:05.000+02:00
Add a loader for external packages
diff --git a/.gitmodules b/.gitmodules
@@ -16,3 +16,6 @@
 [submodule "script"]
 	path = script
 	url = git@github.com:github/VisualStudioBuildScripts
+[submodule "submodules/externalpackages/StartPage"]
+	path = submodules/externalpackages/StartPage
+	url = git@github.com:editor-tools/StartPage.git
diff --git a/appveyor.yml b/appveyor.yml
@@ -12,6 +12,7 @@ install:
       Set-Content c:\users\appveyor\.ssh\id_rsa $fileContent
     } else {
       git submodule deinit script
+      git submodule deinit submodules/externalpackages/StartPage
     }
 
     git submodule update
diff --git a/src/GitHub.App/ViewModels/RepositoryCloneViewModel.cs b/src/GitHub.App/ViewModels/RepositoryCloneViewModel.cs
@@ -22,6 +22,7 @@
 using System.Collections.ObjectModel;
 using GitHub.Collections;
 using GitHub.UI;
+using GitHub.Extensions.Reactive;
 
 namespace GitHub.ViewModels
 {
@@ -152,12 +153,16 @@ IObservable<Unit> OnCloneRepository(object state)
                     notificationService.ShowError(Resources.RepositoryCloneFailedNoSelectedRepo);
                     return Observable.Return(Unit.Default);
                 }
-                
+
                 // The following is a noop if the directory already exists.
                 operatingSystem.Directory.CreateDirectory(BaseRepositoryPath);
 
                 return cloneService.CloneRepository(repository.CloneUrl, repository.Name, BaseRepositoryPath)
-                    .Do(_ => this.usageTracker.IncrementCloneCount());
+                    .ContinueAfter(() =>
+                    {
+                        usageTracker.IncrementCloneCount();
+                        return Observable.Return(Unit.Default);
+                    });
             })
             .SelectMany(_ => _)
             .Catch<Unit, Exception>(e =>
diff --git a/src/GitHub.Exports/GitHub.Exports.csproj b/src/GitHub.Exports/GitHub.Exports.csproj
@@ -153,6 +153,7 @@
       <DependentUpon>IPackageSettings.tt</DependentUpon>
     </Compile>
     <Compile Include="Settings\GitHubConnectSectionState.cs" />
+    <Compile Include="Settings\Guids.cs" />
     <Compile Include="Settings\PullRequestListUIState.cs" />
     <Compile Include="Settings\RepositoryUIState.cs" />
     <Compile Include="Settings\UIState.cs" />
diff --git a/src/GitHub.Exports/Helpers/AssemblyResolver.cs b/src/GitHub.Exports/Helpers/AssemblyResolver.cs
@@ -7,6 +7,9 @@
 using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
+using Microsoft.VisualStudio.Shell;
+using System.Diagnostics;
+using GitHub.Collections;
 
 namespace GitHub.Helpers
 {
@@ -47,13 +50,15 @@ static Assembly LoadAssemblyFromRunDir(object sender, ResolveEventArgs e)
         {
             try
             {
-                var name = new AssemblyName(e.Name);
-                if (!ourAssemblies.Contains(name.Name))
+                var requestedName = e.Name.TrimSuffix(".dll", StringComparison.OrdinalIgnoreCase);
+                var name = new AssemblyName(requestedName).Name;
+                if (!ourAssemblies.Contains(name, StringComparer.OrdinalIgnoreCase))
                     return null;
                 var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
-                var filename = Path.Combine(path, name.Name + ".dll");
+                var filename = Path.Combine(path, name + ".dll");
                 if (!File.Exists(filename))
                     return null;
+
                 return Assembly.LoadFrom(filename);
             }
             catch (Exception ex)
diff --git a/src/GitHub.Exports/Services/IUIProvider.cs b/src/GitHub.Exports/Services/IUIProvider.cs
@@ -3,9 +3,11 @@
 using GitHub.Models;
 using GitHub.UI;
 using System.Windows.Controls;
+using System.Runtime.InteropServices;
 
 namespace GitHub.Services
 {
+    [Guid("76909E1A-9D58-41AB-8957-C26B9550787B")]
     public interface IUIProvider : IServiceProvider
     {
         ExportProvider ExportProvider { get; }
diff --git a/src/GitHub.Exports/Settings/Guids.cs b/src/GitHub.Exports/Settings/Guids.cs
@@ -0,0 +1,10 @@
+﻿using System;
+
+namespace GitHub.VisualStudio
+{
+    public static class Guids
+    {
+        public const string PackageId = "c3d3dc68-c977-411f-b3e8-03b0dccf7dfc";
+        public const string ImagesId = "27841f47-070a-46d6-90be-a5cbbfc724ac";
+    }
+}
diff --git a/src/GitHub.Extensions/LambdaComparer.cs b/src/GitHub.Extensions/LambdaComparer.cs
@@ -10,11 +10,11 @@ public class LambdaComparer<T> : IEqualityComparer<T>, IComparer<T>
         readonly Func<T, int> lambdaHash;
 
         public LambdaComparer(Func<T, T, int> lambdaComparer) :
-            this(lambdaComparer, o => 0)
+            this(lambdaComparer, null)
         {
         }
 
-        LambdaComparer(Func<T, T, int> lambdaComparer, Func<T, int> lambdaHash)
+        public LambdaComparer(Func<T, T, int> lambdaComparer, [AllowNull] Func<T, int> lambdaHash)
         {
             this.lambdaComparer = lambdaComparer;
             this.lambdaHash = lambdaHash;
@@ -32,7 +32,9 @@ public bool Equals([AllowNull] T x, [AllowNull] T y)
 
         public int GetHashCode([AllowNull] T obj)
         {
-            return lambdaHash(obj);
+            return lambdaHash != null
+                ? lambdaHash(obj)
+                : obj?.GetHashCode() ?? 0;
         }
     }
 }
diff --git a/src/GitHub.VisualStudio/GitHub.VisualStudio.csproj b/src/GitHub.VisualStudio/GitHub.VisualStudio.csproj
@@ -107,12 +107,26 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="Microsoft.VisualStudio.ComponentModelHost, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
     <Reference Include="Microsoft.VisualStudio.CoreUtility, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
+    <Reference Include="Microsoft.VisualStudio.OLE.Interop, Version=7.1.40304.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+      <HintPath>..\..\packages\Microsoft.VisualStudio.OLE.Interop.7.10.6070\lib\Microsoft.VisualStudio.OLE.Interop.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="Microsoft.VisualStudio.Shell.14.0, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
+    <Reference Include="Microsoft.VisualStudio.Shell.Immutable.11.0, Version=11.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Microsoft.VisualStudio.Shell.Immutable.11.0.11.0.50727\lib\net45\Microsoft.VisualStudio.Shell.Immutable.11.0.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Microsoft.VisualStudio.Shell.Immutable.14.0, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Microsoft.VisualStudio.Shell.Immutable.14.0.14.3.25407\lib\net45\Microsoft.VisualStudio.Shell.Immutable.14.0.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Microsoft.VisualStudio.Shell.Interop, Version=7.1.40304.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+      <HintPath>..\..\packages\Microsoft.VisualStudio.Shell.Interop.7.10.6071\lib\Microsoft.VisualStudio.Shell.Interop.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="Microsoft.VisualStudio.Text.Data, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
     <Reference Include="Microsoft.VisualStudio.Text.Logic, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
     <Reference Include="Microsoft.VisualStudio.Text.UI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
-    <Reference Include="Microsoft.VisualStudio.OLE.Interop" />
-    <Reference Include="Microsoft.VisualStudio.Shell.Interop" />
     <Reference Include="Microsoft.VisualStudio.Shell.Interop.8.0" />
     <Reference Include="Microsoft.VisualStudio.Shell.Interop.9.0" />
     <Reference Include="Microsoft.VisualStudio.Shell.Interop.10.0" />
@@ -123,10 +137,12 @@
       <EmbedInteropTypes>true</EmbedInteropTypes>
     </Reference>
     <Reference Include="Microsoft.VisualStudio.Text.UI.Wpf, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
-    <Reference Include="Microsoft.VisualStudio.TextManager.Interop" />
     <Reference Include="Microsoft.VisualStudio.Shell.Immutable.10.0" />
-    <Reference Include="Microsoft.VisualStudio.Shell.Immutable.11.0" />
     <Reference Include="Microsoft.VisualStudio.Shell.Immutable.12.0" />
+    <Reference Include="Microsoft.VisualStudio.TextManager.Interop, Version=7.1.40304.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+      <HintPath>..\..\packages\Microsoft.VisualStudio.TextManager.Interop.7.10.6070\lib\Microsoft.VisualStudio.TextManager.Interop.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Newtonsoft.Json.6.0.8\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
@@ -234,7 +250,7 @@
       <SubType>Component</SubType>
     </Compile>
     <Compile Include="Settings\PackageSettings.cs" />
-    <Compile Include="Settings\Settings.cs" />
+    <Compile Include="Settings\Guids.cs" />
     <Compile Include="GlobalSuppressions.cs" />
     <Compile Include="GitHubPackage.cs" />
     <Compile Include="PkgCmdID.cs" />
@@ -547,14 +563,14 @@
       <Project>{161dbf01-1dbf-4b00-8551-c5c00f26720d}</Project>
       <Name>GitHub.TeamFoundation.14</Name>
       <Private>False</Private>
-      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup%3bGetCopyToOutputDirectoryItems%3bDebugSymbolsProjectOutputGroup%3bBuiltProjectOutputGroup%3bBuiltProjectOutputGroupDependencies%3bGetCopyToOutputDirectoryItems%3bSatelliteDllsProjectOutputGroup%3b</IncludeOutputGroupsInVSIX>
+      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;GetCopyToOutputDirectoryItems;DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup%3b</IncludeOutputGroupsInVSIXLocalOnly>
     </ProjectReference>
     <ProjectReference Include="..\GitHub.TeamFoundation.15\GitHub.TeamFoundation.15.csproj">
       <Project>{161dbf01-1dbf-4b00-8551-c5c00f26720e}</Project>
       <Name>GitHub.TeamFoundation.15</Name>
       <Private>False</Private>
-      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup%3bGetCopyToOutputDirectoryItems%3bDebugSymbolsProjectOutputGroup%3bBuiltProjectOutputGroup%3bBuiltProjectOutputGroupDependencies%3bGetCopyToOutputDirectoryItems%3bSatelliteDllsProjectOutputGroup%3b</IncludeOutputGroupsInVSIX>
+      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;GetCopyToOutputDirectoryItems;DebugSymbolsProjectOutputGroup;</IncludeOutputGroupsInVSIX>
       <IncludeOutputGroupsInVSIXLocalOnly>DebugSymbolsProjectOutputGroup%3b</IncludeOutputGroupsInVSIXLocalOnly>
     </ProjectReference>
     <ProjectReference Include="..\GitHub.UI.Reactive\GitHub.UI.Reactive.csproj">
@@ -589,6 +605,23 @@
   <ItemGroup>
     <Service Include="{508349B6-6B84-4DF5-91F0-309BEEBAD82D}" />
   </ItemGroup>
+  <ItemGroup Condition="$(Buildtype) == 'Internal'">
+    <Content Include="..\..\submodules\externalpackages\StartPage\build\GitHub.StartPage.pkgdef">
+      <Link>GitHub.StartPage.pkgdef</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <IncludeInVSIX>true</IncludeInVSIX>
+    </Content>
+    <Content Include="..\..\submodules\externalpackages\StartPage\build\GitHub.StartPage.dll">
+      <Link>GitHub.StartPage.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <IncludeInVSIX>true</IncludeInVSIX>
+    </Content>
+    <Content Include="..\..\submodules\externalpackages\StartPage\build\GitHub.StartPage.pdb">
+      <Link>GitHub.StartPage.pdb</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <IncludeInVSIX>true</IncludeInVSIX>
+    </Content>
+  </ItemGroup>
   <PropertyGroup>
     <UseCodebase>true</UseCodebase>
   </PropertyGroup>
diff --git a/src/GitHub.VisualStudio/GitHubPackage.cs b/src/GitHub.VisualStudio/GitHubPackage.cs
@@ -1,32 +1,26 @@
 ﻿using System;
 using System.ComponentModel.Composition;
-using System.Diagnostics;
-using System.Globalization;
-using System.IO;
-using System.Linq;
-using System.Reflection;
 using System.Runtime.InteropServices;
 using GitHub.Extensions;
 using GitHub.Models;
-using GitHub.Primitives;
 using GitHub.Services;
-using GitHub.UI;
-using GitHub.VisualStudio.Base;
 using GitHub.VisualStudio.UI;
 using Microsoft.VisualStudio;
 using Microsoft.VisualStudio.Shell;
 using Microsoft.VisualStudio.Shell.Interop;
 using Octokit;
 using GitHub.Helpers;
+using System.ComponentModel.Design;
+using System.Diagnostics;
+using System.Threading;
+using tasks = System.Threading.Tasks;
 
 namespace GitHub.VisualStudio
 {
     [PackageRegistration(UseManagedResourcesOnly = true)]
     [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)]
     [Guid(GuidList.guidGitHubPkgString)]
-    //[ProvideBindingPath]
     [ProvideMenuResource("Menus.ctmenu", 1)]
-    //[ProvideAutoLoad(UIContextGuids.NoSolution)]
     // this is the Git service GUID, so we load whenever it loads
     [ProvideAutoLoad("11B8E6D7-C08B-4385-B321-321078CDD1F8")]
     [ProvideToolWindow(typeof(GitHubPane), Orientation = ToolWindowOrientation.Right, Style = VsDockStyle.Tabbed, Window = EnvDTE.Constants.vsWindowKindSolutionExplorer)]
@@ -80,4 +74,63 @@ public GHClient(IProgram program)
         {
         }
     }
+
+    [PackageRegistration(UseManagedResourcesOnly = true, AllowsBackgroundLoading = true)]
+    [ProvideService(typeof(IUIProvider), IsAsyncQueryable = true)]
+    [ProvideAutoLoad(UIContextGuids.NoSolution)]
+    [ProvideAutoLoad(UIContextGuids.SolutionExists)]
+    [Guid(ServiceProviderPackageId)]
+    public sealed class ServiceProviderPackage : AsyncPackage
+    {
+        const string ServiceProviderPackageId = "D5CE1488-DEDE-426D-9E5B-BFCCFBE33E53";
+        const string StartPagePreview4PackageId = "3b764d23-faf7-486f-94c7-b3accc44a70d";
+
+        Version vsversion;
+        Version VSVersion
+        {
+            get
+            {
+                if (vsversion == null)
+                {
+                    var asm = typeof(ITaskList).Assembly;
+                    try
+                    {
+                        // this will return Microsoft.VisualStudio.Shell.Immutable.14.0 in VS15
+                        // but Microsoft.VisualStudio.Shell.Framework in Dev15
+                        var vinfo = FileVersionInfo.GetVersionInfo(asm.Location);
+                        vsversion = new Version(vinfo.FileMajorPart, vinfo.FileMinorPart, vinfo.FileBuildPart, vinfo.FilePrivatePart);
+                    }
+                    catch
+                    {
+                        // something wrong, fallback to assembly version
+                        vsversion = asm.GetName().Version;
+                    }
+                }
+                return vsversion;
+            }
+        }
+
+        protected override async tasks.Task InitializeAsync(CancellationToken cancellationToken, IProgress<ServiceProgressData> progress)
+        {
+            AddService(typeof(IUIProvider), CreateService, true);
+
+            // Load the start page package only for Dev15 Preview 4
+            if (VSVersion.Major == 15 && VSVersion.Build == 25618)
+            {
+                var shell = await GetServiceAsync(typeof(SVsShell)) as IVsShell;
+                IVsPackage startPagePackage;
+                if (ErrorHandler.Failed(shell?.LoadPackage(new Guid(StartPagePreview4PackageId), out startPagePackage) ?? -1))
+                {
+                    // ¯\_(ツ)_/¯
+                }
+            }
+        }
+
+        tasks.Task<object> CreateService(IAsyncServiceContainer container, CancellationToken cancellationToken, Type serviceType)
+        {
+            AssemblyResolver.InitializeAssemblyResolver();
+            var ret = Services.ComponentModel.DefaultExportProvider.GetExportedValueOrDefault<IUIProvider>();
+            return tasks.Task.FromResult((object)ret);
+        }
+    }
 }
diff --git a/src/GitHub.VisualStudio/Settings/Guids.cs b/src/GitHub.VisualStudio/Settings/Guids.cs
@@ -1,7 +1,4 @@
-﻿// Guids.cs
-// MUST match guids.h
-using System;
-using System.Diagnostics;
+﻿using System;
 
 namespace GitHub.VisualStudio
 {
@@ -11,10 +8,10 @@ static class GuidList
         public const string guidGitHubCmdSetString = "c4c91892-8881-4588-a5d9-b41e8f540f5a";
         public const string guidGitHubToolbarCmdSetString = "C5F1193E-F300-41B3-B4C4-5A703DD3C1C6";
         public const string guidContextMenuSetString = "31057D08-8C3C-4C5B-9F91-8682EA08EC27";
+        public const string guidImageMoniker = "27841f47-070a-46d6-90be-a5cbbfc724ac";
 
         public static readonly Guid guidGitHubCmdSet = new Guid(guidGitHubCmdSetString);
         public static readonly Guid guidGitHubToolbarCmdSet = new Guid(guidGitHubToolbarCmdSetString);
-
         public static readonly Guid guidContextMenuSet = new Guid(guidContextMenuSetString);
     }
 }
diff --git a/src/GitHub.VisualStudio/packages.config b/src/GitHub.VisualStudio/packages.config
@@ -4,6 +4,11 @@
   <package id="Fody" version="1.28.0" targetFramework="net45" developmentDependency="true" />
   <package id="LibGit2Sharp" version="0.22.0" targetFramework="net461" />
   <package id="LibGit2Sharp.NativeBinaries" version="1.0.129" targetFramework="net461" />
+  <package id="Microsoft.VisualStudio.OLE.Interop" version="7.10.6070" targetFramework="net461" />
+  <package id="Microsoft.VisualStudio.Shell.Immutable.11.0" version="11.0.50727" targetFramework="net461" />
+  <package id="Microsoft.VisualStudio.Shell.Immutable.14.0" version="14.3.25407" targetFramework="net461" />
+  <package id="Microsoft.VisualStudio.Shell.Interop" version="7.10.6071" targetFramework="net461" />
+  <package id="Microsoft.VisualStudio.TextManager.Interop" version="7.10.6070" targetFramework="net461" />
   <package id="Microsoft.VSSDK.Vsixsigntool" version="14.1.24720" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />
   <package id="NLog" version="3.1.0" targetFramework="net45" />
diff --git a/src/GitHub.VisualStudio/source.extension.vsixmanifest b/src/GitHub.VisualStudio/source.extension.vsixmanifest
@@ -28,5 +28,6 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.App" Path="|GitHub.App|" />
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.14" Path="|GitHub.TeamFoundation.14|" />
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.TeamFoundation.15" Path="|GitHub.TeamFoundation.15|" />
+    <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="File" Path="GitHub.StartPage.pkgdef" />
   </Assets>
 </PackageManifest>
diff --git a/submodules/externalpackages/StartPage b/submodules/externalpackages/StartPage
@@ -0,0 +1 @@
+Subproject commit 01158551686845eaf3cd3298aabc48a2a6fde90d

Original file line number	Diff line number	Diff line change
`@@ -12,6 +12,7 @@ install:`
`12`	`12`	`Set-Content c:\users\appveyor\.ssh\id_rsa $fileContent`
`13`	`13`	`} else {`
`14`	`14`	`git submodule deinit script`
	`15`	`+ git submodule deinit submodules/externalpackages/StartPage`
`15`	`16`	`}`
`16`	`17`
`17`	`18`	`git submodule update`
Original file line number	Diff line number	Diff line change
`@@ -3,9 +3,11 @@`
`3`	`3`	`using GitHub.Models;`
`4`	`4`	`using GitHub.UI;`
`5`	`5`	`using System.Windows.Controls;`
	`6`	`+using System.Runtime.InteropServices;`
`6`	`7`
`7`	`8`	`namespace GitHub.Services`
`8`	`9`	`{`
	`10`	`+ [Guid("76909E1A-9D58-41AB-8957-C26B9550787B")]`
`9`	`11`	`public interface IUIProvider : IServiceProvider`
`10`	`12`	`{`
`11`	`13`	`ExportProvider ExportProvider { get; }`
Original file line number	Diff line number	Diff line change
`@@ -10,11 +10,11 @@ public class LambdaComparer<T> : IEqualityComparer<T>, IComparer<T>`
`10`	`10`	`readonly Func<T, int> lambdaHash;`
`11`	`11`
`12`	`12`	`public LambdaComparer(Func<T, T, int> lambdaComparer) :`
`13`		`- this(lambdaComparer, o => 0)`
	`13`	`+ this(lambdaComparer, null)`
`14`	`14`	`{`
`15`	`15`	`}`
`16`	`16`
`17`		`- LambdaComparer(Func<T, T, int> lambdaComparer, Func<T, int> lambdaHash)`
	`17`	`+ public LambdaComparer(Func<T, T, int> lambdaComparer, [AllowNull] Func<T, int> lambdaHash)`
`18`	`18`	`{`
`19`	`19`	`this.lambdaComparer = lambdaComparer;`
`20`	`20`	`this.lambdaHash = lambdaHash;`
`@@ -32,7 +32,9 @@ public bool Equals([AllowNull] T x, [AllowNull] T y)`
`32`	`32`
`33`	`33`	`public int GetHashCode([AllowNull] T obj)`
`34`	`34`	`{`
`35`		`- return lambdaHash(obj);`
	`35`	`+ return lambdaHash != null`
	`36`	`+ ? lambdaHash(obj)`
	`37`	`+ : obj?.GetHashCode() ?? 0;`
`36`	`38`	`}`
`37`	`39`	`}`
`38`	`40`	`}`