Add first attempt at PdbGenerationTestRunner.

ICSharpCode.Decompiler.Tests/Helpers/Tester.cs

@@ -36,7 +36,10 @@
 using ICSharpCode.Decompiler.TypeSystem;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.Emit;
+using Microsoft.CodeAnalysis.Text;
 using Microsoft.CSharp;
+using Microsoft.DiaSymReader.Tools;
 using NUnit.Framework;
 
 namespace ICSharpCode.Decompiler.Tests.Helpers
@@ -345,23 +348,39 @@ internal static DecompilerSettings GetSettings(CompilerOptions cscOptions)
 			}
 		}
 
-		public static CSharpDecompiler GetDecompilerForSnippet(string csharpText)
+		public static void CompileCSharpWithPdb(string assemblyName, Dictionary<string, string> sourceFiles, PdbToXmlOptions options)
 		{
-			var syntaxTree = SyntaxFactory.ParseSyntaxTree(csharpText);
-			var compilation = CSharpCompilation.Create(
-				"TestAssembly",
-				new[] { syntaxTree },
-				defaultReferences.Value,
-				new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
-			var peStream = new MemoryStream();
-			var emitResult = compilation.Emit(peStream);
-			peStream.Position = 0;
-
-			var moduleDefinition = new PEFile("TestAssembly.dll", peStream, PEStreamOptions.PrefetchEntireImage);
-			var resolver = new UniversalAssemblyResolver("TestAssembly.dll", false, moduleDefinition.Reader.DetectTargetFrameworkId(), PEStreamOptions.PrefetchEntireImage);
-			var decompiler = new CSharpDecompiler(moduleDefinition, resolver, new DecompilerSettings());
-
-			return decompiler;
+			var parseOptions = new CSharpParseOptions(languageVersion: Microsoft.CodeAnalysis.CSharp.LanguageVersion.Latest);
+
+			List<EmbeddedText> embeddedTexts = new List<EmbeddedText>();
+			List<SyntaxTree> syntaxTrees = new List<SyntaxTree>();
+
+			foreach (KeyValuePair<string, string> file in sourceFiles) {
+				var sourceText = SourceText.From(file.Value, Encoding.UTF8);
+				syntaxTrees.Add(SyntaxFactory.ParseSyntaxTree(sourceText, parseOptions, file.Key));
+				embeddedTexts.Add(EmbeddedText.FromSource(file.Key, sourceText));
+			}
+
+			var compilation = CSharpCompilation.Create(Path.GetFileNameWithoutExtension(assemblyName),
+				syntaxTrees, defaultReferences.Value,
+				new CSharpCompilationOptions(
+					OutputKind.DynamicallyLinkedLibrary,
+					platform: Platform.AnyCpu,
+					optimizationLevel: OptimizationLevel.Debug,
+					allowUnsafe: true,
+					deterministic: true
+				));
+			using (FileStream peStream = File.Open(assemblyName + ".dll", FileMode.OpenOrCreate, FileAccess.ReadWrite))
+			using (FileStream pdbStream = File.Open(assemblyName + ".pdb", FileMode.OpenOrCreate, FileAccess.ReadWrite)) {
+				var emitResult = compilation.Emit(peStream, pdbStream, options: new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb), embeddedTexts: embeddedTexts);
+				if (!emitResult.Success) {
+					StringBuilder b = new StringBuilder("Compiler error:");
+					foreach (var diag in emitResult.Diagnostics) {
+						b.AppendLine(diag.ToString());
+					}
+					throw new Exception(b.ToString());
+				}
+			}
 		}
 
 		internal static string GetSuffix(CompilerOptions cscOptions)

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -39,6 +39,7 @@
     <PackageReference Include="DiffLib" Version="2017.7.26.1241" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.10.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic" Version="2.10.0" />
+    <PackageReference Include="Microsoft.DiaSymReader.Converter.Xml" Version="1.1.0-beta1-63314-01" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.11.2" />
     <PackageReference Include="System.Collections.Immutable" Version="1.5.0" />
     <PackageReference Include="NUnit" Version="3.11.0" />
@@ -125,7 +126,7 @@
     <Compile Include="TestCases\Pretty\NullPropagation.cs" />
     <Compile Include="TestCases\Pretty\VariableNaming.cs" />
     <Compile Include="TestCases\Pretty\VariableNamingWithoutSymbols.cs" />
-    <Compile Include="DebugInfo\SequencePointTests.cs" />
+    <Compile Include="PdbGenerationTestRunner.cs" />
     <None Include="TestCases\ILPretty\Issue1047.il" />
     <None Include="TestCases\ILPretty\Issue959.cs" />
     <None Include="TestCases\ILPretty\FSharpLoops_Debug.cs" />
@@ -201,6 +202,10 @@
     <Compile Include="CodeSampleFileParser.cs" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Include="TestCases\PdbGen\HelloWorld.xml" />
+  </ItemGroup>
+
   <ItemGroup>
     <None Include="TestCases\ILPretty\Issue646.il" />
     <None Include="TestCases\ILPretty\Issue379.il" />
@@ -217,4 +222,8 @@
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="DebugInfo\" />
+  </ItemGroup>
+
 </Project>

ICSharpCode.Decompiler.Tests/PdbGenerationTestRunner.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection.PortableExecutable;
+using System.Runtime.CompilerServices;
+using System.Xml.Linq;
+using ICSharpCode.Decompiler.CSharp;
+using ICSharpCode.Decompiler.CSharp.OutputVisitor;
+using ICSharpCode.Decompiler.DebugInfo;
+using ICSharpCode.Decompiler.Metadata;
+using ICSharpCode.Decompiler.Tests.Helpers;
+using ICSharpCode.Decompiler.TypeSystem;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.DiaSymReader.Tools;
+using NUnit.Framework;
+
+namespace ICSharpCode.Decompiler.Tests
+{
+	[TestFixture]
+	public class PdbGenerationTestRunner
+	{
+		static readonly string TestCasePath = Tester.TestCasePath + "/PdbGen";
+
+		[Test, Ignore("Needs adjustments in generator")]
+		public void HelloWorld()
+		{
+			TestGeneratePdb();
+		}
+
+		private void TestGeneratePdb([CallerMemberName] string testName = null)
+		{
+			const PdbToXmlOptions options = PdbToXmlOptions.IncludeEmbeddedSources | PdbToXmlOptions.ThrowOnError | PdbToXmlOptions.IncludeTokens | PdbToXmlOptions.ResolveTokens | PdbToXmlOptions.IncludeMethodSpans;
+
+			string xmlFile = Path.Combine(TestCasePath, testName + ".xml");
+			string xmlContent = File.ReadAllText(xmlFile);
+			XDocument document = XDocument.Parse(xmlContent);
+			var files = document.Descendants("file").ToDictionary(f => f.Attribute("name").Value, f => f.Value);
+			Tester.CompileCSharpWithPdb(Path.Combine(TestCasePath, testName + ".expected"), files, options);
+
+			string peFileName = Path.Combine(TestCasePath, testName + ".expected.dll");
+			string pdbFileName = Path.Combine(TestCasePath, testName + ".expected.pdb");
+			var moduleDefinition = new PEFile(peFileName);
+			var resolver = new UniversalAssemblyResolver(peFileName, false, moduleDefinition.Reader.DetectTargetFrameworkId(), PEStreamOptions.PrefetchEntireImage);
+			var decompiler = new CSharpDecompiler(moduleDefinition, resolver, new DecompilerSettings());
+			using (FileStream pdbStream = File.Open(Path.Combine(TestCasePath, testName + ".pdb"), FileMode.OpenOrCreate, FileAccess.ReadWrite)) {
+				PortablePdbWriter.WritePdb(moduleDefinition, decompiler, new DecompilerSettings(), pdbStream);
+				pdbStream.Position = 0;
+				string resultFile = PdbToXmlConverter.ToXml(pdbStream, moduleDefinition.Reader.GetEntireImage().GetContent().ToArray(), options);
+				Assert.AreEqual(xmlContent, resultFile);
+			}
+		}
+	}
+}

ICSharpCode.Decompiler.Tests/TestCases/PdbGen/.gitignore

@@ -0,0 +1,2 @@
+/*.dll
+/*.pdb

ICSharpCode.Decompiler.Tests/TestCases/PdbGen/HelloWorld.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-16"?>
+<symbols>
+  <files>
+    <file id="1" name="HelloWorld.cs" language="C#" checksumAlgorithm="SHA1" checksum="80-99-0D-B3-EA-B0-A3-72-39-A0-C5-FB-17-13-1B-CC-BF-3D-4C-AA" embeddedSourceLength="200"><![CDATA[using System;
+
+namespace ICSharpCode.Decompiler.Tests.TestCases.PdbGen
+{
+	public class HelloWorld
+	{
+		public static void Hello()
+		{
+			Console.WriteLine("Hello World!");
+		}
+	}
+}
+]]></file>
+  </files>
+  <methods>
+    <method containingType="ICSharpCode.Decompiler.Tests.TestCases.PdbGen.HelloWorld" name="Hello" token="0x6000001">
+      <sequencePoints>
+        <entry offset="0x0" startLine="8" startColumn="3" endLine="8" endColumn="4" document="1" />
+        <entry offset="0x1" startLine="9" startColumn="4" endLine="9" endColumn="38" document="1" />
+        <entry offset="0xc" startLine="10" startColumn="3" endLine="10" endColumn="4" document="1" />
+      </sequencePoints>
+      <scope startOffset="0x0" endOffset="0xd" />
+    </method>
+  </methods>
+  <method-spans>
+    <method declaringType="ICSharpCode.Decompiler.Tests.TestCases.PdbGen.HelloWorld" methodName="Hello" token="0x6000001">
+      <document startLine="8" endLine="10" />
+    </method>
+  </method-spans>
+</symbols>

ICSharpCode.Decompiler/DebugInfo/PortablePdbWriter.cs

@@ -68,7 +68,7 @@ public static void WritePdb(PEFile file, CSharpDecompiler decompiler, Decompiler
 				var type = reader.GetTypeDefinition(handle);
 
 				// Generate syntax tree, source and checksum
-				var name = metadata.GetOrAddDocumentName("ILSpy_Generated_" + type.GetFullTypeName(reader) + "_" + Guid.NewGuid() + ".cs");
+				var name = metadata.GetOrAddDocumentName(type.GetFullTypeName(reader).ReflectionName.Replace('.', Path.DirectorySeparatorChar) + ".cs");
 				var syntaxTree = decompiler.DecompileTypes(new[] { handle });
 				syntaxTree.InsertChildAfter(null, new Comment(" PDB and source generated by ICSharpCode.Decompiler " + decompilerVersion.FileVersion), Roles.Comment);
 				var sourceText = SyntaxTreeToString(syntaxTree, settings);

NuGet.config

@@ -3,5 +3,6 @@
   <packageSources>
     <add key="Nuget Official" value="https://api.nuget.org/v3/index.json" />
     <add key="ILSpy" value="https://ci.appveyor.com/nuget/ilspy-masterfeed" />
+	<add key="DotNet MyGet" value="https://dotnet.myget.org/F/symreader-converter/api/v3/index.json" />
   </packageSources>
 </configuration>