private static Assembly CompileToAssembly(WebPageRazorHost host, SyntaxTree syntaxTree, ICollection <ICompileModule> compilationModules)
{
var strArgs = new List <string>();
strArgs.Add("/target:library");
strArgs.Add(host.DefaultDebugCompilation ? "/o-" : "/o+");
strArgs.Add(host.DefaultDebugCompilation ? "/debug+" : "/debug-");
var cscArgs = CSharpCommandLineParser.Default.Parse(strArgs, null, null);
var compilation = CSharpCompilation.Create(
"RoslynRazor", // Note: using a fixed assembly name, which doesn't matter as long as we don't expect cross references of generated assemblies
new[] { syntaxTree },
BuildManager.GetReferencedAssemblies().OfType <Assembly>().Select(ResolveReference),
cscArgs.CompilationOptions.WithAssemblyIdentityComparer(DesktopAssemblyIdentityComparer.Default));
compilation = Hacks.MakeValueTuplesWorkWhenRunningOn47RuntimeAndTargetingNet45Plus(compilation);
var diagnostics = new List <Diagnostic>();
var context = new CompileContext(compilationModules);
context.Before(new BeforeCompileContext
{
Arguments = cscArgs,
Compilation = compilation,
Diagnostics = diagnostics,
});
compilation = context.BeforeCompileContext.Compilation;
using (var dllStream = new MemoryStream())
using (var pdbStream = new MemoryStream())
{
EmitResult emitResult = compilation.Emit(dllStream, pdbStream);
diagnostics.AddRange(emitResult.Diagnostics);
if (!emitResult.Success)
{
Diagnostic diagnostic = diagnostics.First(x => x.Severity == DiagnosticSeverity.Error);
string message = diagnostic.ToString();
LinePosition linePosition = diagnostic.Location.GetMappedLineSpan().StartLinePosition;
throw new HttpParseException(message, null, host.VirtualPath, null, linePosition.Line + 1);
}
context.After(new AfterCompileContext
{
Arguments = context.BeforeCompileContext.Arguments,
AssemblyStream = dllStream,
Compilation = compilation,
Diagnostics = diagnostics,
SymbolStream = pdbStream,
XmlDocStream = null,
});
return(Assembly.Load(dllStream.GetBuffer(), pdbStream.GetBuffer()));
}
}
private EmitResult Emit(CompileContext context)
{
var compilation = context.BeforeCompileContext.Compilation;
var pdbPath = CscArgs.PdbPath;
var outputPath = Path.Combine(CscArgs.OutputDirectory, CscArgs.OutputFileName);
if (!CscArgs.EmitPdb)
{
pdbPath = null;
}
else if (string.IsNullOrWhiteSpace(pdbPath))
{
pdbPath = Path.ChangeExtension(outputPath, ".pdb");
}
using (var peStream = new MemoryStream())
using (var pdbStream = !string.IsNullOrWhiteSpace(pdbPath) ? new MemoryStream() : null)
using (var xmlDocumentationStream = !string.IsNullOrWhiteSpace(CscArgs.DocumentationPath) ? new MemoryStream(): null)
using (var win32Resources = CreateWin32Resource(compilation))
{
// https://github.com/dotnet/roslyn/blob/41950e21da3ac2c307fb46c2ca8c8509b5059909/src/Compilers/Core/Portable/CommandLine/CommonCompiler.cs#L437
var emitResult = compilation.Emit(
peStream: peStream,
pdbStream: pdbStream,
xmlDocumentationStream: xmlDocumentationStream,
win32Resources: win32Resources,
manifestResources: CscArgs.ManifestResources,
options: CscArgs.EmitOptions,
debugEntryPoint: null);
Diagnostics.AddRange(emitResult.Diagnostics);
context.After(new AfterCompileContext
{
Arguments = CscArgs,
AssemblyStream = peStream,
Compilation = compilation,
Diagnostics = Diagnostics,
SymbolStream = pdbStream,
XmlDocStream = xmlDocumentationStream,
});
// do not create the output files if emit fails
// if the output files are there, msbuild incremental build thinks the previous build succeeded
if (emitResult.Success)
{
Task.WaitAll(
DumpToFileAsync(outputPath, peStream),
DumpToFileAsync(pdbPath, pdbStream),
DumpToFileAsync(CscArgs.DocumentationPath, xmlDocumentationStream));
}
return(emitResult);
}
}
public async Task <bool> RunAsync(CancellationToken cancellationToken = default(CancellationToken))
{
try
{
// this parameter was introduced in rc3, all call to it seem to be using RuntimeEnvironment.GetRuntimeDirectory()
// https://github.com/dotnet/roslyn/blob/0382e3e3fc543fc483090bff3ab1eaae39dfb4d9/src/Compilers/CSharp/csc/Program.cs#L18
var sdkDirectory = RuntimeEnvironment.GetRuntimeDirectory();
CscArgs = CSharpCommandLineParser.Default.Parse(_precompilationCommandLineArgs.Arguments, _precompilationCommandLineArgs.BaseDirectory, sdkDirectory);
Diagnostics = new List <Diagnostic>(CscArgs.Errors);
// load those before anything else hooks into our AssemlbyResolve.
var loader = new PrecompilationModuleLoader(PrecompilerSection.Current);
loader.ModuleInitializationFailed += (module, ex) =>
{
Diagnostics.Add(Diagnostic.Create(
FailedToCreateModule,
Location.Create(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile, new TextSpan(), new LinePositionSpan()),
module.Type,
ex.Message));
};
var compilationModules = loader.LoadedModules;
if (Diagnostics.Any())
{
return(false);
}
Encoding = CscArgs.Encoding ?? new UTF8Encoding(false); // utf8 without bom
var outputPath = Path.Combine(CscArgs.OutputDirectory, CscArgs.OutputFileName);
var pdbPath = CscArgs.PdbPath ?? Path.ChangeExtension(outputPath, ".pdb");
using (var container = CreateCompositionHost())
using (var workspace = CreateWokspace(container))
using (var peStream = new MemoryStream())
using (var pdbStream = CscArgs.EmitPdb && CscArgs.EmitOptions.DebugInformationFormat != DebugInformationFormat.Embedded ? new MemoryStream() : null)
using (var xmlDocumentationStream = !string.IsNullOrWhiteSpace(CscArgs.DocumentationPath) ? new MemoryStream() : null)
{
EmitResult emitResult = null;
var documentExtenders = workspace.Services.FindLanguageServices <IDocumentExtender>(_ => true).ToList();
var project = CreateProject(workspace, documentExtenders);
CSharpCompilation compilation = null;
CompilationWithAnalyzers compilationWithAnalyzers = null;
try
{
Diagnostics.AddRange((await Task.WhenAll(documentExtenders.Select(x => x.Complete()))).SelectMany(x => x));
compilation = await project.GetCompilationAsync(cancellationToken) as CSharpCompilation;
}
catch (Exception ex)
{
Diagnostics.Add(Diagnostic.Create(FailedToCreateCompilation, Location.None, ex));
return(false);
}
var analyzers = project.AnalyzerReferences.SelectMany(x => x.GetAnalyzers(project.Language)).ToImmutableArray();
if (!analyzers.IsEmpty)
{
compilationWithAnalyzers = compilation.WithAnalyzers(analyzers, project.AnalyzerOptions, cancellationToken);
compilation = compilationWithAnalyzers.Compilation as CSharpCompilation;
}
var context = new CompileContext(compilationModules);
context.Before(new BeforeCompileContext
{
Arguments = CscArgs,
Compilation = compilation.AddSyntaxTrees(GeneratedSyntaxTrees()),
Diagnostics = Diagnostics,
});
CscArgs = context.BeforeCompileContext.Arguments;
compilation = context.BeforeCompileContext.Compilation;
var analysisTask = compilationWithAnalyzers?.GetAnalysisResultAsync(cancellationToken);
using (var win32Resources = CreateWin32Resource(compilation))
{
// PathMapping is also required here, to actually get the symbols to line up:
// https://github.com/dotnet/roslyn/blob/9d081e899b35294b8f1793d31abe5e2c43698844/src/Compilers/Core/Portable/CommandLine/CommonCompiler.cs#L616
// PathUtilities.NormalizePathPrefix is internal, but callable via the SourceFileResolver, that we set in CreateProject
var emitOptions = CscArgs.EmitOptions
.WithPdbFilePath(compilation.Options.SourceReferenceResolver.NormalizePath(pdbPath, CscArgs.BaseDirectory));
// https://github.com/dotnet/roslyn/blob/41950e21da3ac2c307fb46c2ca8c8509b5059909/src/Compilers/Core/Portable/CommandLine/CommonCompiler.cs#L437
emitResult = compilation.Emit(
peStream: peStream,
pdbStream: pdbStream,
xmlDocumentationStream: xmlDocumentationStream,
win32Resources: win32Resources,
manifestResources: CscArgs.ManifestResources,
options: emitOptions,
sourceLinkStream: TryOpenFile(CscArgs.SourceLink, out var sourceLinkStream) ? sourceLinkStream : null,
embeddedTexts: CscArgs.EmbeddedFiles.AsEnumerable()
.Select(x => TryOpenFile(x.Path, out var embeddedText) ? EmbeddedText.FromStream(x.Path, embeddedText) : null)
.Where(x => x != null),
debugEntryPoint: null,
cancellationToken: cancellationToken);
}
Diagnostics.AddRange(emitResult.Diagnostics);
try
{
var analysisResult = analysisTask == null ? null : await analysisTask;
if (analysisResult != null)
{
Diagnostics.AddRange(analysisResult.GetAllDiagnostics());
foreach (var info in analysisResult.AnalyzerTelemetryInfo)
{
Console.WriteLine($"hidden: {info.Key} {info.Value.ExecutionTime.TotalMilliseconds:#}ms");
}
}
}
catch (OperationCanceledException)
{
Console.WriteLine("warning: analysis canceled");
}
catch (Exception ex)
{
Diagnostics.Add(Diagnostic.Create(AnalysisFailed, Location.None, ex));
return(false);
}
if (!emitResult.Success || HasErrors)
{
return(false);
}
context.After(new AfterCompileContext
{
Arguments = CscArgs,
AssemblyStream = peStream,
Compilation = compilation,
Diagnostics = Diagnostics,
SymbolStream = pdbStream,
XmlDocStream = xmlDocumentationStream,
});
if (!HasErrors)
{
// do not create the output files if emit fails
// if the output files are there, msbuild incremental build thinks the previous build succeeded
await Task.WhenAll(
DumpToFileAsync(outputPath, peStream, cancellationToken),
DumpToFileAsync(pdbPath, pdbStream, cancellationToken),
DumpToFileAsync(CscArgs.DocumentationPath, xmlDocumentationStream, cancellationToken));
return(true);
}
return(false);
}
}
catch (PrecompilationModuleException pmex)
{
Diagnostics.Add(Diagnostic.Create(PrecompilationModuleFailed, Location.None, pmex.Message, pmex.InnerException));
return(false);
}
catch (Exception ex)
{
Diagnostics.Add(Diagnostic.Create(UnhandledException, Location.None, ex));
return(false);
}
finally
{
// strings only, since the Console.Out textwriter is another app domain...
// https://stackoverflow.com/questions/2459994/is-there-a-way-to-print-a-new-line-when-using-message
for (var i = 0; i < Diagnostics.Count; i++)
{
var d = Diagnostics[i];
if (!d.IsSuppressed && d.Severity != DiagnosticSeverity.Hidden)
{
Console.WriteLine(d.ToString().Replace("\r", "").Replace("\n", "\\n"));
}
}
}
}
public async Task <bool> RunAsync()
{
try
{
// this parameter was introduced in rc3, all call to it seem to be using RuntimeEnvironment.GetRuntimeDirectory()
// https://github.com/dotnet/roslyn/blob/0382e3e3fc543fc483090bff3ab1eaae39dfb4d9/src/Compilers/CSharp/csc/Program.cs#L18
var sdkDirectory = RuntimeEnvironment.GetRuntimeDirectory();
CscArgs = CSharpCommandLineParser.Default.Parse(_precompilationCommandLineArgs.Arguments, _precompilationCommandLineArgs.BaseDirectory, sdkDirectory);
Diagnostics = new List <Diagnostic>(CscArgs.Errors);
// load those before anything else hooks into our AssemlbyResolve...
var compilationModules = LoadModules().ToList();
if (Diagnostics.Any())
{
return(false);
}
Encoding = CscArgs.Encoding ?? new UTF8Encoding(false); // utf8 without bom
var pdbPath = CscArgs.PdbPath;
var outputPath = Path.Combine(CscArgs.OutputDirectory, CscArgs.OutputFileName);
if (!CscArgs.EmitPdb)
{
pdbPath = null;
}
else if (string.IsNullOrWhiteSpace(pdbPath))
{
pdbPath = Path.ChangeExtension(outputPath, ".pdb");
}
using (var workspace = CreateWokspace())
using (var analysisCts = new CancellationTokenSource())
using (var peStream = new MemoryStream())
using (var pdbStream = !string.IsNullOrWhiteSpace(pdbPath) ? new MemoryStream() : null)
using (var xmlDocumentationStream = !string.IsNullOrWhiteSpace(CscArgs.DocumentationPath) ? new MemoryStream() : null)
{
EmitResult emitResult = null;
var project = CreateProject(workspace);
CSharpCompilation compilation = null;
CompilationWithAnalyzers compilationWithAnalyzers = null;
try
{
compilation = await project.GetCompilationAsync() as CSharpCompilation;
}
catch (Exception ex)
{
Console.WriteLine("error: failed to create compilation: " + ex.Message);
return(false);
}
var context = new CompileContext(compilationModules);
context.Before(new BeforeCompileContext
{
Arguments = CscArgs,
Compilation = compilation.AddSyntaxTrees(GeneratedSyntaxTrees()),
Diagnostics = Diagnostics,
});
CscArgs = context.BeforeCompileContext.Arguments;
compilation = context.BeforeCompileContext.Compilation;
var analyzers = project.AnalyzerReferences.SelectMany(x => x.GetAnalyzers(project.Language)).ToImmutableArray();
if (!analyzers.IsEmpty)
{
compilationWithAnalyzers = compilation.WithAnalyzers(analyzers, project.AnalyzerOptions, analysisCts.Token);
compilation = compilationWithAnalyzers.Compilation as CSharpCompilation;
}
var analysisTask = compilationWithAnalyzers?.GetAnalysisResultAsync(analysisCts.Token);
using (var win32Resources = CreateWin32Resource(compilation))
{
// https://github.com/dotnet/roslyn/blob/41950e21da3ac2c307fb46c2ca8c8509b5059909/src/Compilers/Core/Portable/CommandLine/CommonCompiler.cs#L437
emitResult = compilation.Emit(
peStream: peStream,
pdbStream: pdbStream,
xmlDocumentationStream: xmlDocumentationStream,
win32Resources: win32Resources,
manifestResources: CscArgs.ManifestResources,
options: CscArgs.EmitOptions,
sourceLinkStream: TryOpenFile(CscArgs.SourceLink, out var sourceLinkStream) ? sourceLinkStream : null,
embeddedTexts: CscArgs.EmbeddedFiles.AsEnumerable()
.Select(x => TryOpenFile(x.Path, out var embeddedText) ? EmbeddedText.FromStream(x.Path, embeddedText) : null)
.Where(x => x != null),
debugEntryPoint: null);
}
Diagnostics.AddRange(emitResult.Diagnostics);
try
{
var analysisResult = analysisTask == null ? null : await analysisTask;
if (analysisResult != null)
{
Diagnostics.AddRange(analysisResult.GetAllDiagnostics());
foreach (var info in analysisResult.AnalyzerTelemetryInfo)
{
Console.WriteLine($"hidden: {info.Key} {info.Value.ExecutionTime.TotalMilliseconds:#}ms");
}
}
}
catch (OperationCanceledException)
{
Console.WriteLine("warning: analysis canceled");
}
catch (Exception ex)
{
Console.WriteLine("error: analysis failed: " + ex.Message);
return(false);
}
if (!emitResult.Success || HasErrors)
{
return(false);
}
context.After(new AfterCompileContext
{
Arguments = CscArgs,
AssemblyStream = peStream,
Compilation = compilation,
Diagnostics = Diagnostics,
SymbolStream = pdbStream,
XmlDocStream = xmlDocumentationStream,
});
if (!HasErrors)
{
// do not create the output files if emit fails
// if the output files are there, msbuild incremental build thinks the previous build succeeded
await Task.WhenAll(
DumpToFileAsync(outputPath, peStream),
DumpToFileAsync(pdbPath, pdbStream),
DumpToFileAsync(CscArgs.DocumentationPath, xmlDocumentationStream));
return(true);
}
return(false);
}
}
catch (Exception ex)
{
Console.WriteLine(string.Join("\n", ex.ToString().Split('\n').Select((x, i) => x + $"ERROR: {i:D4} {x}")));
return(false);
}
finally
{
Diagnostics.ForEach(x => Console.WriteLine(x.ToString())); // strings only, since the Console.Out textwriter is another app domain...
}
}