Add mdb support to roslyn

Author: veblush

IncrementalCompiler.sln

@@ -15,6 +15,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CompilerPlugin.Unity5", "ex
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UniversalCompiler", "extra\UniversalCompiler\UniversalCompiler.csproj", "{B19F1DAC-FA9A-4749-9E03-1848D29BFCCD}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RoslynMdbWriter", "core\RoslynMdbWriter\RoslynMdbWriter.csproj", "{286226F3-564D-480A-B6C2-2D207CBFB064}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -37,6 +39,10 @@ Global
 		{B19F1DAC-FA9A-4749-9E03-1848D29BFCCD}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B19F1DAC-FA9A-4749-9E03-1848D29BFCCD}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B19F1DAC-FA9A-4749-9E03-1848D29BFCCD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{286226F3-564D-480A-B6C2-2D207CBFB064}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{286226F3-564D-480A-B6C2-2D207CBFB064}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{286226F3-564D-480A-B6C2-2D207CBFB064}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{286226F3-564D-480A-B6C2-2D207CBFB064}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -46,5 +52,6 @@ Global
 		{A848498C-64E7-444F-83FD-FCFE42E79E53} = {A22672B3-D1C4-47C0-AB82-6D22BBB94BBB}
 		{67FE81D8-C1BF-4D15-A512-E9E8078DEECF} = {A22672B3-D1C4-47C0-AB82-6D22BBB94BBB}
 		{B19F1DAC-FA9A-4749-9E03-1848D29BFCCD} = {A22672B3-D1C4-47C0-AB82-6D22BBB94BBB}
+		{286226F3-564D-480A-B6C2-2D207CBFB064} = {092669A2-567F-4C73-A01E-AEBA2C733994}
 	EndGlobalSection
 EndGlobal

core/IncrementalCompiler/Compiler.cs

@@ -5,6 +5,7 @@
 using Microsoft.CodeAnalysis.CSharp;
 using System.Linq;
 using System.Text;
+using Mono.CompilerServices.SymbolWriter;
 using NLog;
 
 namespace IncrementalCompiler
@@ -145,11 +146,11 @@ private SyntaxTree ParseSource(string file, CSharpParseOptions parseOption)
         private void Emit(CompileResult result)
         {
             var outputFile = Path.Combine(_options.WorkDirectory, _options.Output);
-            var debugFile = Path.Combine(_options.WorkDirectory, Path.ChangeExtension(_options.Output, ".pdb"));
+            var debugFile = Path.Combine(_options.WorkDirectory, _options.Output + ".mdb");
             using (var peStream = new FileStream(outputFile, FileMode.Create))
             using (var pdbStream = new FileStream(debugFile, FileMode.Create))
             {
-                var r = _compilation.Emit(peStream, pdbStream);
+                var r = _compilation.EmitWithMdb(peStream, pdbStream);
 
                 foreach (var d in r.Diagnostics)
                 {

core/IncrementalCompiler/IncrementalCompiler.csproj

@@ -83,6 +83,12 @@
     <Analyzer Include="..\..\packages\Microsoft.CodeAnalysis.Analyzers.1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.Analyzers.dll" />
     <Analyzer Include="..\..\packages\Microsoft.CodeAnalysis.Analyzers.1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.CSharp.Analyzers.dll" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\RoslynMdbWriter\RoslynMdbWriter.csproj">
+      <Project>{286226f3-564d-480a-b6c2-2d207cbfb064}</Project>
+      <Name>RoslynMdbWriter</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

core/RoslynMdbWriter/MdbHelper.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using Microsoft.CodeAnalysis.Emit;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CodeGen;
+
+namespace Mono.CompilerServices.SymbolWriter
+{
+    public static class MdbHelper
+    {
+        public static EmitResult EmitWithMdb(this Compilation compilation, Stream peStream, Stream pdbStream = null,
+            Stream xmlDocumentationStream = null, Stream win32Resources = null,
+            IEnumerable<ResourceDescription> manifestResources = null, EmitOptions options = null,
+            IMethodSymbol debugEntryPoint = null, CancellationToken cancellationToken = default(CancellationToken))
+        {
+            if (peStream == null)
+            {
+                throw new ArgumentNullException(nameof(peStream));
+            }
+
+            if (!peStream.CanWrite)
+            {
+                throw new ArgumentException(CodeAnalysisResources.StreamMustSupportWrite, nameof(peStream));
+            }
+
+            if (pdbStream != null && !pdbStream.CanWrite)
+            {
+                throw new ArgumentException(CodeAnalysisResources.StreamMustSupportWrite, nameof(pdbStream));
+            }
+
+            var testData = new CompilationTestData
+            {
+                SymWriterFactory = () => new MdbWriter()
+            };
+
+            return compilation.Emit(
+                peStream,
+                pdbStream,
+                xmlDocumentationStream,
+                win32Resources,
+                manifestResources,
+                options,
+                debugEntryPoint,
+                testData,
+                null,
+                cancellationToken);
+        }
+    }
+}