Add visitor benchmark.

ICSharpCode.NRefactory.ConsistencyCheck/ICSharpCode.NRefactory.ConsistencyCheck.csproj

@@ -45,7 +45,7 @@
     <Optimize>False</Optimize>
     <CheckForOverflowUnderflow>True</CheckForOverflowUnderflow>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
-	<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'net_4_5_Release' ">
     <OutputPath>bin\Release\</OutputPath>
@@ -54,7 +54,7 @@
     <Optimize>True</Optimize>
     <CheckForOverflowUnderflow>False</CheckForOverflowUnderflow>
     <DefineConstants>TRACE</DefineConstants>
-	<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.Build" />
@@ -84,6 +84,7 @@
     <Compile Include="ResolverTest.cs" />
     <Compile Include="RoundtripTest.cs" />
     <Compile Include="Solution.cs" />
+    <Compile Include="VisitorBenchmark.cs" />
     <Compile Include="Xml\IncrementalXmlParserTests.cs" />
     <Compile Include="Xml\XmlReaderTest.cs" />
   </ItemGroup>

ICSharpCode.NRefactory.ConsistencyCheck/Program.cs

@@ -57,6 +57,8 @@ namespace ICSharpCode.NRefactory.ConsistencyCheck
 			                  solution.AllFiles.Count(),
 			                  solution.Projects.Count);
 			
+			VisitorBenchmark.Run(solution.AllFiles.Select(f => f.CompilationUnit));
+			
 			using (new Timer("ID String test... ")) TypeSystemTests.IDStringConsistencyCheck(solution);
 			using (new Timer("Resolve unresolved members... ")) TypeSystemTests.ResolvedUnresolvedMembers(solution);
 			//RunTestOnAllFiles("Roundtripping test", RoundtripTest.RunTest);

ICSharpCode.NRefactory.ConsistencyCheck/VisitorBenchmark.cs

@@ -0,0 +1,58 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using ICSharpCode.NRefactory.CSharp;
+
+namespace ICSharpCode.NRefactory.ConsistencyCheck
+{
+	public class VisitorBenchmark
+	{
+		public static void Run(IEnumerable<CompilationUnit> files)
+		{
+			files = files.ToList();
+			RunTest("DepthFirstAstVisitor", files, cu => cu.AcceptVisitor(new DepthFirst()));
+			RunTest("DepthFirstAstVisitor<object>", files, cu => cu.AcceptVisitor(new DepthFirst<object>()));
+			RunTest("DepthFirstAstVisitor<int>", files, cu => cu.AcceptVisitor(new DepthFirst<int>()));
+			RunTest("DepthFirstAstVisitor<object, object>", files, cu => cu.AcceptVisitor(new DepthFirst<object, object>(), null));
+			RunTest("DepthFirstAstVisitor<int, int>", files, cu => cu.AcceptVisitor(new DepthFirst<int, int>(), 0));
+			RunTest("ObservableAstVisitor", files, cu => cu.AcceptVisitor(new ObservableAstVisitor()));
+			RunTest("ObservableAstVisitor<object, object>", files, cu => cu.AcceptVisitor(new ObservableAstVisitor<object, object>(), null));
+			RunTest("ObservableAstVisitor<int, int>", files, cu => cu.AcceptVisitor(new ObservableAstVisitor<int, int>(), 0));
+		}
+		
+		class DepthFirst : DepthFirstAstVisitor {}
+		class DepthFirst<T> : DepthFirstAstVisitor<T> {}
+		class DepthFirst<T, S> : DepthFirstAstVisitor<T, S> {}
+		
+		static void RunTest(string text, IEnumerable<CompilationUnit> files, Action<CompilationUnit> action)
+		{
+			Stopwatch w = Stopwatch.StartNew();
+			foreach (var file in files) {
+				for (int i = 0; i < 20; i++) {
+					action(file);
+				}
+			}
+			w.Stop();
+			Console.WriteLine(text.PadRight(40) + ": " + w.Elapsed);
+		}
+	}
+}