From 9ef2ae9d2810d0967239588edcd9c2521021c2c9 Mon Sep 17 00:00:00 2001
From: Jason Finch <jason.finch@gmail.com>
Date: Sun, 29 Mar 2026 09:19:10 +1000
Subject: [PATCH] Fix performance benchmark TFM compatibility

Multi-target AngleSharp.Performance.Css to net472;net10.0 so that
Alba.CsCss (which only supports net462/net472) is excluded from the
net10.0 build. Update ExCSS from 2.0.6 to 4.3.1 and adapt to its
renamed StylesheetParser API.
---
 .../AngleSharp.Performance.Css.csproj                    | 9 ++++++---
 src/AngleSharp.Performance.Css/CsCssParser.cs            | 4 +++-
 src/AngleSharp.Performance.Css/ExCssParser.cs            | 4 ++--
 src/AngleSharp.Performance.Css/Program.cs                | 2 ++
 4 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj b/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj
index e48c8dde..9670b169 100644
--- a/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj
+++ b/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
+    <TargetFrameworks>net472;net10.0</TargetFrameworks>
     <ApplicationIcon />
     <OutputType>Exe</OutputType>
     <StartupObject />
@@ -26,8 +26,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Alba.CsCss" version="1.0.1.0" />
     <PackageReference Include="AngleSharp" Version="1.4.0" />
-    <PackageReference Include="ExCSS" version="2.0.6" />
+    <PackageReference Include="ExCSS" version="4.3.1" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
+    <PackageReference Include="Alba.CsCss" version="1.0.1.0" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/AngleSharp.Performance.Css/CsCssParser.cs b/src/AngleSharp.Performance.Css/CsCssParser.cs
index 915051e0..dcf4b197 100644
--- a/src/AngleSharp.Performance.Css/CsCssParser.cs
+++ b/src/AngleSharp.Performance.Css/CsCssParser.cs
@@ -1,4 +1,5 @@
-namespace AngleSharp.Performance.Css
+#if NET472
+namespace AngleSharp.Performance.Css
 {
     using Alba.CsCss.Style;
     using System;
@@ -24,3 +25,4 @@ public void Run(String source)
         }
     }
 }
+#endif
diff --git a/src/AngleSharp.Performance.Css/ExCssParser.cs b/src/AngleSharp.Performance.Css/ExCssParser.cs
index e389aa8c..c73d0cdb 100644
--- a/src/AngleSharp.Performance.Css/ExCssParser.cs
+++ b/src/AngleSharp.Performance.Css/ExCssParser.cs
@@ -7,11 +7,11 @@ class ExCssParser : ITestee
     {
         public String Name => "ExCSS";
 
-        public Type Library => typeof(Parser);
+        public Type Library => typeof(StylesheetParser);
 
         public void Run(String source)
         {
-            var parser = new Parser();
+            var parser = new StylesheetParser();
             parser.Parse(source);
         }
     }
diff --git a/src/AngleSharp.Performance.Css/Program.cs b/src/AngleSharp.Performance.Css/Program.cs
index 27571603..11898bd1 100644
--- a/src/AngleSharp.Performance.Css/Program.cs
+++ b/src/AngleSharp.Performance.Css/Program.cs
@@ -16,7 +16,9 @@ static void Main(String[] args)
             {
                 new AngleSharpParser(),
                 new ExCssParser(),
+#if NET472
                 new CsCssParser(),
+#endif
             };
 
             var testsuite = new TestSuite(parsers, stylesheets.Tests, new Output(), new Warmup())