Using the None host with binary logs

Directory.Packages.props

@@ -21,5 +21,6 @@
     <PackageVersion Include="System.IO.Compression" Version="4.3.0" />
     <PackageVersion Include="xunit" Version="2.4.2" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.4.3" />
+    <PackageVersion Include="Xunit.Combinatorial" Version="1.6.24" />
   </ItemGroup>
 </Project>

src/Basic.CompilerLog.UnitTests/Basic.CompilerLog.UnitTests.csproj

@@ -30,6 +30,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="Xunit.Combinatorial" />
   </ItemGroup>
 
   <ItemGroup>

src/Basic.CompilerLog.UnitTests/BasicAnalyzerHostTests.cs

@@ -36,17 +36,26 @@ public void Supported()
     [Fact]
     public void NoneDispose()
     {
-        var host = new BasicAnalyzerHostNone(readGeneratedFiles: true, ImmutableArray<(SourceText, string)>.Empty);
+        var host = new BasicAnalyzerHostNone(ImmutableArray<(SourceText, string)>.Empty);
         host.Dispose();
         Assert.Throws<ObjectDisposedException>(() => { _ = host.AnalyzerReferences; });
     }
 
     [Fact]
     public void NoneProps()
     {
-        var host = new BasicAnalyzerHostNone(readGeneratedFiles: true, ImmutableArray<(SourceText, string)>.Empty);
+        var host = new BasicAnalyzerHostNone(ImmutableArray<(SourceText, string)>.Empty);
         host.Dispose();
         Assert.Equal(BasicAnalyzerKind.None, host.Kind);
         Assert.Empty(host.GeneratedSourceTexts);
     }
+
+    [Fact]
+    public void Error()
+    {
+        var message = "my error message";
+        var host = new BasicAnalyzerHostNone(message);
+        var diagnostic = host.GetDiagnostics().Single();
+        Assert.Contains(message, diagnostic.GetMessage());
+    }
 }

src/Basic.CompilerLog.UnitTests/BinaryLogReaderTests.cs

@@ -120,4 +120,32 @@ public void VerifyBasicAnalyzerKind(BasicAnalyzerKind basicAnalyzerKind)
         var compilationData = reader.ReadCompilationData(compilerCall);
         Assert.Equal(basicAnalyzerKind, compilationData.BasicAnalyzerHost.Kind);
     }
+
+    [Theory]
+    [CombinatorialData]
+    public void GetCompilationSimple(BasicAnalyzerKind basicAnalyzerKind)
+    {
+        using var reader = BinaryLogReader.Create(Fixture.Console.Value.BinaryLogPath!, basicAnalyzerKind);
+        var compilerCall = reader.ReadAllCompilerCalls().First();
+        var compilationData = reader.ReadCompilationData(compilerCall);
+        Assert.NotNull(compilationData);
+        var emitResult = compilationData.EmitToMemory();
+        Assert.True(emitResult.Success);
+    }
+
+    [Fact]
+    public void ReadDeletedPdb()
+    {
+        var dir = Root.NewDirectory();
+        RunDotNet($"new console --name example --output .", dir);
+        RunDotNet("build -bl -nr:false", dir);
+
+        // Delete the PDB
+        Directory.EnumerateFiles(dir, "*.pdb", SearchOption.AllDirectories).ForEach(File.Delete);
+
+        using var reader = BinaryLogReader.Create(Path.Combine(dir, "msbuild.binlog"), BasicAnalyzerKind.None);
+        var data = reader.ReadAllCompilationData().Single();
+        var diagnostic = data.GetDiagnostics().Where(x => x.Severity == DiagnosticSeverity.Error).Single();
+        Assert.Contains("Can't find portable pdb file for", diagnostic.GetMessage());
+    }
 }

src/Basic.CompilerLog.UnitTests/CompilerCallReaderUtilTests.cs

@@ -18,13 +18,14 @@ public CompilerCallReaderUtilTests(ITestOutputHelper testOutputHelper, CompilerL
     [Fact]
     public void CreateBadExtension()
     {
-        Assert.Throws<ArgumentException>(() => CompilerCallReaderUtil.Get("file.bad"));
+        Assert.Throws<ArgumentException>(() => CompilerCallReaderUtil.Create("file.bad"));
     }
 
-    [Fact]
-    public void GetBadArguments()
+    [Theory]
+    [CombinatorialData]
+    public void GetAllAnalyzerKinds(BasicAnalyzerKind basicAnalyzerKind)
     {
-        var binlogPath = Fixture.Console.Value.BinaryLogPath!;
-        Assert.Throws<ArgumentException>(() => CompilerCallReaderUtil.Get(binlogPath, BasicAnalyzerKind.None));
+        using var reader = CompilerCallReaderUtil.Create(Fixture.Console.Value.CompilerLogPath!, basicAnalyzerKind);
+        Assert.Equal(basicAnalyzerKind, reader.BasicAnalyzerKind);
     }
 }

src/Basic.CompilerLog.UnitTests/CompilerLogReaderTests.cs

@@ -357,7 +357,7 @@ public void NoneHostNativePdb()
 
         using var reader = CompilerLogReader.Create(Path.Combine(RootDirectory, "msbuild.binlog"), BasicAnalyzerKind.None);
         var rawData = reader.ReadRawCompilationData(0).Item2;
-        Assert.False(rawData.ReadGeneratedFiles);
+        Assert.False(rawData.HasAllGeneratedFileContent);
         var data = reader.ReadCompilationData(0);
         var compilation = data.GetCompilationAfterGenerators(out var diagnostics);
         Assert.Single(diagnostics);

src/Basic.CompilerLog.UnitTests/CompilerLogUtilTests.cs

@@ -18,6 +18,6 @@ public CompilerLogUtilTests(ITestOutputHelper testOutputHelper, CompilerLogFixtu
     [Fact]
     public void CreateBadExtension()
     {
-        Assert.Throws<ArgumentException>(() => CompilerCallReaderUtil.Get("file.bad"));
+        Assert.Throws<ArgumentException>(() => CompilerCallReaderUtil.Create("file.bad"));
     }
 }

src/Basic.CompilerLog.UnitTests/UsingAllCompilerLogTests.cs

@@ -66,9 +66,7 @@ public async Task EmitToDisk()
     }
 
     [Theory]
-    [InlineData(BasicAnalyzerKind.None)]
-    [InlineData(BasicAnalyzerKind.InMemory)]
-    [InlineData(BasicAnalyzerKind.OnDisk)]
+    [CombinatorialData]
     public async Task EmitToMemory(BasicAnalyzerKind basicAnalyzerKind)
     {
         TestOutputHelper.WriteLine($"BasicAnalyzerKind: {basicAnalyzerKind}");
@@ -77,7 +75,7 @@ public async Task EmitToMemory(BasicAnalyzerKind basicAnalyzerKind)
         {
             count++;
             TestOutputHelper.WriteLine(logPath);
-            using var reader = CompilerCallReaderUtil.GetOrCreate(logPath, basicAnalyzerKind);
+            using var reader = CompilerCallReaderUtil.Create(logPath, basicAnalyzerKind);
             foreach (var data in reader.ReadAllCompilationData())
             {
                 TestOutputHelper.WriteLine($"\t{data.CompilerCall.ProjectFileName} ({data.CompilerCall.TargetFramework})");

src/Basic.CompilerLog.Util/BinaryLogReader.cs

@@ -22,11 +22,6 @@ public sealed class BinaryLogReader : ICompilerCallReader, IBasicAnalyzerHostDat
 
     private BinaryLogReader(Stream stream, bool leaveOpen, BasicAnalyzerKind? basicAnalyzerKind, LogReaderState? state)
     {
-        if (basicAnalyzerKind == BasicAnalyzerKind.None)
-        {
-            throw new ArgumentException($"{nameof(BasicAnalyzerKind)}.None is not supported on binary logs");
-        }
-
         _stream = stream;
         BasicAnalyzerKind = basicAnalyzerKind ?? BasicAnalyzerHost.DefaultKind;
         OwnsLogReaderState = state is null;
@@ -58,7 +53,7 @@ public static BinaryLogReader Create(
         BasicAnalyzerKind? basicAnalyzerKind = null,
         LogReaderState? state = null)
     {
-        var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+        var stream = RoslynUtil.OpenBuildFileForRead(filePath);
         return Create(stream, basicAnalyzerKind, state: state, leaveOpen: false);
     }
 
@@ -130,6 +125,12 @@ public CompilationData ReadCompilationData(CompilerCall compilerCall)
         var emitData = GetEmitData();
         var basicAnalyzerHost = CreateAnalyzerHost();
 
+        if (basicAnalyzerHost is BasicAnalyzerHostNone none)
+        {
+            // Generated source code should appear last to match the compiler behavior.
+            sourceTexts.AddRange(none.GeneratedSourceTexts);
+        }
+
         return compilerCall.IsCSharp ? GetCSharp() : GetVisualBasic();
 
         CSharpCompilationData GetCSharp()
@@ -180,11 +181,36 @@ BasicAnalyzerHost CreateAnalyzerHost()
                 list,
                 (kind, analyzers) => kind switch
                 {
-                    BasicAnalyzerKind.None => throw new ArgumentException("Cannot create a host for None"),
+                    BasicAnalyzerKind.None => CreateNoneHost(),
                     BasicAnalyzerKind.OnDisk => new BasicAnalyzerHostOnDisk(this, analyzers),
                     BasicAnalyzerKind.InMemory => new BasicAnalyzerHostInMemory(this, analyzers),
                     _ => throw new ArgumentOutOfRangeException(nameof(kind)),
                 });
+
+            BasicAnalyzerHostNone CreateNoneHost()
+            {
+                if (!RoslynUtil.HasGeneratedFilesInPdb(args))
+                {
+                    return new BasicAnalyzerHostNone("Compilation does not have a PDB compatible with generated files");
+                }
+
+                try
+                {
+                    var generatedFiles = RoslynUtil.ReadGeneratedFiles(compilerCall, args);
+                    var builder = ImmutableArray.CreateBuilder<(SourceText SourceText, string Path)>(generatedFiles.Count);
+                    foreach (var tuple in generatedFiles)
+                    {
+                        var sourceText = RoslynUtil.GetSourceText(tuple.Stream, args.ChecksumAlgorithm, canBeEmbedded: false);
+                        builder.Add((sourceText, tuple.FilePath));
+                    }
+
+                    return new BasicAnalyzerHostNone(builder.MoveToImmutable());
+                }
+                catch (Exception ex)
+                {
+                    return new BasicAnalyzerHostNone(ex.Message);
+                }
+            }
         }
 
         List<(SourceText SourceText, string Path)> GetAnalyzerConfigs() => 
@@ -282,7 +308,7 @@ private void CheckOwnership(CompilerCall compilerCall)
 
     void IBasicAnalyzerHostDataProvider.CopyAssemblyBytes(RawAnalyzerData data, Stream stream)
     {
-        using var fileStream = new FileStream(data.FilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+        using var fileStream = RoslynUtil.OpenBuildFileForRead(data.FilePath);
         fileStream.CopyTo(stream);
     }
 

src/Basic.CompilerLog.Util/CompilerCallReaderUtil.cs

@@ -5,7 +5,7 @@ public static class CompilerCallReaderUtil
     /// <summary>
     /// Create an <see cref="ICompilerCallReader"/> directly over the provided file path
     /// </summary>
-    public static ICompilerCallReader Get(string filePath, BasicAnalyzerKind? basicAnalyzerKind = null, LogReaderState? logReaderState = null)
+    public static ICompilerCallReader Create(string filePath, BasicAnalyzerKind? basicAnalyzerKind = null, LogReaderState? logReaderState = null)
     {
         var ext = Path.GetExtension(filePath);
         if (ext is ".binlog")
@@ -20,24 +20,4 @@ public static ICompilerCallReader Get(string filePath, BasicAnalyzerKind? basicA
 
         throw new ArgumentException($"Unrecognized extension: {ext}");
     }
-
-    /// <summary>
-    /// Get or create an <see cref="ICompilerCallReader"/> over the provided file path. The implementation
-    /// may convert binary logs to compiler logs if the provided arguments aren't compatible with 
-    /// a binary log. For example if <see cref="BasicAnalyzerKind.None"/> is provided
-    /// </summary>
-    public static ICompilerCallReader GetOrCreate(string filePath, BasicAnalyzerKind? basicAnalyzerKind = null, LogReaderState? logReaderState = null)
-    {
-        var ext = Path.GetExtension(filePath);
-        if (ext is ".binlog")
-        {
-            if (basicAnalyzerKind is BasicAnalyzerKind.None)
-            {
-                var stream = CompilerLogUtil.GetOrCreateCompilerLogStream(filePath);
-                return CompilerLogReader.Create(stream, basicAnalyzerKind, logReaderState, leaveOpen: false);
-            }
-        }
-
-        return Get(filePath, basicAnalyzerKind, logReaderState);
-    }
 }