protected override bool FileExists(string?fullPath)
            {
                if (fullPath != null)
                {
                    _logger?.AddRead(fullPath);
                }

                return(base.FileExists(fullPath));
            }
 internal static MetadataReferenceResolver GetMetadataReferenceResolver(CommandLineArguments arguments, TouchedFileLogger loggerOpt)
 {
     return(RuntimeMetadataReferenceResolver.CreateCurrentPlatformResolver(
                arguments.ReferencePaths,
                arguments.BaseDirectory,
                fileReferenceProvider: (path, properties) =>
     {
         loggerOpt?.AddRead(path);
         return MetadataReference.CreateFromFile(path, properties);
     }));
 }
Exemple #3
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 internal static MetadataReferenceResolver GetMetadataReferenceResolver(CommandLineArguments arguments, TouchedFileLogger loggerOpt)
 {
     return(new RuntimeMetadataReferenceResolver(
                new RelativePathResolver(arguments.ReferencePaths, arguments.BaseDirectory),
                null,
                GacFileResolver.IsAvailable ? new GacFileResolver(preferredCulture: CultureInfo.CurrentCulture) : null,
                (path, properties) =>
     {
         loggerOpt?.AddRead(path);
         return MetadataReference.CreateFromFile(path);
     }));
 }
Exemple #4
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 internal override MetadataReferenceResolver GetCommandLineMetadataReferenceResolver(TouchedFileLogger loggerOpt)
 {
     return(new RuntimeMetadataReferenceResolver(
                new RelativePathResolver(Arguments.ReferencePaths, Arguments.BaseDirectory),
                null,
                new GacFileResolver(GacFileResolver.Default.Architectures, CultureInfo.CurrentCulture),
                (path, properties) =>
     {
         loggerOpt?.AddRead(path);
         return MetadataReference.CreateFromFile(path);
     }));
 }
Exemple #5
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        public override Compilation?CreateCompilation(
            TextWriter consoleOutput,
            TouchedFileLogger touchedFilesLogger,
            ErrorLogger errorLogger,
            ImmutableArray <AnalyzerConfigOptionsResult> analyzerConfigOptions,
            AnalyzerConfigOptionsResult globalConfigOptions)
        {
            var parseOptions = Arguments.ParseOptions;

            // We compute script parse options once so we don't have to do it repeatedly in
            // case there are many script files.
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles         = Arguments.SourceFiles;
            var trees               = new SyntaxTree?[sourceFiles.Length];
            var normalizedFilePaths = new string[sourceFiles.Length];
            var diagnosticBag       = DiagnosticBag.GetInstance();

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                Parallel.For(0, sourceFiles.Length, UICultureUtilities.WithCurrentUICulture <int>(i =>
                {
                    try
                    {
                        //NOTE: order of trees is important!!
                        trees[i] = ParseFile(
                            parseOptions,
                            scriptParseOptions,
                            ref hadErrors,
                            sourceFiles[i],
                            diagnosticBag,
                            out normalizedFilePaths[i]);
                    }
                    catch (Exception e) when(FatalError.Report(e))
                    {
                        throw ExceptionUtilities.Unreachable;
                    }
                }));
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(
                        parseOptions,
                        scriptParseOptions,
                        ref hadErrors,
                        sourceFiles[i],
                        diagnosticBag,
                        out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (ReportDiagnostics(diagnosticBag.ToReadOnlyAndFree(), consoleOutput, errorLogger))
            {
                Debug.Assert(hadErrors);
                return(null);
            }

            var diagnostics     = new List <DiagnosticInfo>();
            var uniqueFilePaths = new HashSet <string>(StringComparer.OrdinalIgnoreCase);

            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(sourceFiles[i].IsInputRedirected || PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                                                       Arguments.PrintFullPaths ? normalizedFilePath : _diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
            }

            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath            = this.Arguments.AppConfigPath;

            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = new FileStream(appConfigPath, FileMode.Open, FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var xmlFileResolver    = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray <string> .Empty, Arguments.BaseDirectory, Arguments.PathMap, touchedFilesLogger);

            MetadataReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(diagnostics, touchedFilesLogger, out referenceDirectiveResolver);

            if (ReportDiagnostics(diagnostics, consoleOutput, errorLogger))
            {
                return(null);
            }

            var loggingFileSystem = new LoggingStrongNameFileSystem(touchedFilesLogger, _tempDirectory);
            var optionsProvider   = new CompilerSyntaxTreeOptionsProvider(trees, analyzerConfigOptions, globalConfigOptions);

            return(CSharpCompilation.Create(
                       Arguments.CompilationName,
                       trees.WhereNotNull(),
                       resolvedReferences,
                       Arguments.CompilationOptions
                       .WithMetadataReferenceResolver(referenceDirectiveResolver)
                       .WithAssemblyIdentityComparer(assemblyIdentityComparer)
                       .WithXmlReferenceResolver(xmlFileResolver)
                       .WithStrongNameProvider(Arguments.GetStrongNameProvider(loggingFileSystem))
                       .WithSourceReferenceResolver(sourceFileResolver)
                       .WithSyntaxTreeOptionsProvider(optionsProvider)));
        }
Exemple #6
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        public override Compilation CreateCompilation(TextWriter consoleOutput, TouchedFileLogger touchedFilesLogger, ErrorLogger errorLogger)
        {
            var parseOptions       = Arguments.ParseOptions;
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles         = Arguments.SourceFiles;
            var trees               = new SyntaxTree[sourceFiles.Length];
            var normalizedFilePaths = new String[sourceFiles.Length];

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                Parallel.For(0, sourceFiles.Length, UICultureUtilities.WithCurrentUICulture <int>(i =>
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], errorLogger, out normalizedFilePaths[i]);
                }));
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], errorLogger, out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (hadErrors)
            {
                return(null);
            }

            var diagnostics = new List <DiagnosticInfo>();

            var uniqueFilePaths = new HashSet <string>(StringComparer.OrdinalIgnoreCase);

            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                                                       Arguments.PrintFullPaths ? normalizedFilePath : _diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
            }

            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath            = this.Arguments.AppConfigPath;

            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = new FileStream(appConfigPath, FileMode.Open, FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var metadataProvider   = GetMetadataProvider();
            var xmlFileResolver    = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray <string> .Empty, Arguments.BaseDirectory, touchedFilesLogger);

            var externalReferenceResolver = GetExternalMetadataResolver(touchedFilesLogger);
            MetadataFileReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(externalReferenceResolver, metadataProvider, diagnostics, assemblyIdentityComparer, touchedFilesLogger, out referenceDirectiveResolver);

            if (ReportErrors(diagnostics, consoleOutput, errorLogger))
            {
                return(null);
            }

            var strongNameProvider = new LoggingStrongNameProvider(Arguments.KeyFileSearchPaths, touchedFilesLogger);

            var compilation = CSharpCompilation.Create(
                Arguments.CompilationName,
                trees.WhereNotNull(),
                resolvedReferences,
                Arguments.CompilationOptions.
                WithMetadataReferenceResolver(new AssemblyReferenceResolver(referenceDirectiveResolver, metadataProvider)).
                WithAssemblyIdentityComparer(assemblyIdentityComparer).
                WithStrongNameProvider(strongNameProvider).
                WithXmlReferenceResolver(xmlFileResolver).
                WithSourceReferenceResolver(sourceFileResolver));

            return(compilation);
        }
Exemple #7
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        protected override Compilation CreateCompilation(TextWriter consoleOutput, TouchedFileLogger touchedFilesLogger)
        {
            var parseOptions       = Arguments.ParseOptions;
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles         = Arguments.SourceFiles;
            var trees               = new SyntaxTree[sourceFiles.Length];
            var normalizedFilePaths = new String[sourceFiles.Length];

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                var tasks = new Task[sourceFiles.Length];
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    var treeIndex = i;
                    tasks[treeIndex] = Task.Run(async() =>
                    {
                        var file = sourceFiles[treeIndex];

                        var fileReadDiagnostics = new List <DiagnosticInfo>();
                        var result = await ReadFileContentAsync(file, fileReadDiagnostics, Arguments.Encoding).ConfigureAwait(false);

                        var content = result.Item1;
                        normalizedFilePaths[treeIndex] = result.Item2;

                        if (content == null)
                        {
                            PrintErrors(fileReadDiagnostics, consoleOutput);
                            fileReadDiagnostics.Clear();
                            hadErrors        = true;
                            trees[treeIndex] = null;
                        }
                        else
                        {
                            trees[treeIndex] = ParseFile(parseOptions, scriptParseOptions, content, file);
                        }
                    });
                }

                Task.WaitAll(tasks);
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    var file = sourceFiles[i];

                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, file, out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (hadErrors)
            {
                return(null);
            }

            var diagnostics = new List <DiagnosticInfo>();

            var uniqueFilePaths = new HashSet <string>(StringComparer.OrdinalIgnoreCase);

            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                                                       Arguments.PrintFullPaths ? normalizedFilePath : this.diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
            }

            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath            = this.Arguments.AppConfigPath;

            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = new FileStream(appConfigPath, FileMode.Open, FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var metadataProvider   = GetMetadataProvider();
            var xmlFileResolver    = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray <string> .Empty, Arguments.BaseDirectory, touchedFilesLogger);

            var externalReferenceResolver = GetExternalMetadataResolver(touchedFilesLogger);
            MetadataReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(externalReferenceResolver, metadataProvider, diagnostics, assemblyIdentityComparer, touchedFilesLogger, out referenceDirectiveResolver);

            if (PrintErrors(diagnostics, consoleOutput))
            {
                return(null);
            }

            var strongNameProvider = new LoggingStrongNameProvider(Arguments.KeyFileSearchPaths, touchedFilesLogger);

            var compilation = CSharpCompilation.Create(
                Arguments.CompilationName,
                trees.WhereNotNull(),
                resolvedReferences,
                Arguments.CompilationOptions.
                WithMetadataReferenceResolver(referenceDirectiveResolver).
                WithMetadataReferenceProvider(metadataProvider).
                WithAssemblyIdentityComparer(assemblyIdentityComparer).
                WithStrongNameProvider(strongNameProvider).
                WithXmlReferenceResolver(xmlFileResolver).
                WithSourceReferenceResolver(sourceFileResolver));

            // Print the diagnostics produced during the parsing stage and exit if there were any errors.
            if (PrintErrors(compilation.GetParseDiagnostics(), consoleOutput))
            {
                return(null);
            }

            if (PrintErrors(compilation.GetDeclarationDiagnostics(), consoleOutput))
            {
                return(null);
            }

            return(compilation);
        }
Exemple #8
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        public override Compilation CreateCompilation(TextWriter consoleOutput, TouchedFileLogger touchedFilesLogger, ErrorLogger errorLogger)
        {
            var parseOptions = Arguments.ParseOptions;
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles = Arguments.SourceFiles;
            var trees = new SyntaxTree[sourceFiles.Length];
            var normalizedFilePaths = new String[sourceFiles.Length];

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                Parallel.For(0, sourceFiles.Length, UICultureUtilities.WithCurrentUICulture<int>(i =>
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], errorLogger, out normalizedFilePaths[i]);
                }));
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], errorLogger, out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (hadErrors)
            {
                return null;
            }

            var diagnostics = new List<DiagnosticInfo>();

            var uniqueFilePaths = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                        Arguments.PrintFullPaths ? normalizedFilePath : _diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
            }

            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath = this.Arguments.AppConfigPath;
            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = PortableShim.FileStream.Create(appConfigPath, PortableShim.FileMode.Open, PortableShim.FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var xmlFileResolver = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray<string>.Empty, Arguments.BaseDirectory, touchedFilesLogger);

            MetadataReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(diagnostics, touchedFilesLogger, out referenceDirectiveResolver);
            if (ReportErrors(diagnostics, consoleOutput, errorLogger))
            {
                return null;
            }

            var strongNameProvider = new LoggingStrongNameProvider(Arguments.KeyFileSearchPaths, touchedFilesLogger);

            var compilation = CSharpCompilation.Create(
                Arguments.CompilationName,
                trees.WhereNotNull(),
                resolvedReferences,
                Arguments.CompilationOptions.
                    WithMetadataReferenceResolver(referenceDirectiveResolver).
                    WithAssemblyIdentityComparer(assemblyIdentityComparer).
                    WithStrongNameProvider(strongNameProvider).
                    WithXmlReferenceResolver(xmlFileResolver).
                    WithSourceReferenceResolver(sourceFileResolver));

            return compilation;
        }
Exemple #9
0
        protected override Compilation CreateCompilation(TextWriter consoleOutput, TouchedFileLogger touchedFilesLogger)
        {
            var parseOptions = Arguments.ParseOptions;
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles = Arguments.SourceFiles;
            var trees = new SyntaxTree[sourceFiles.Length];
            var normalizedFilePaths = new String[sourceFiles.Length];

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                var tasks = new Task[sourceFiles.Length];
                for(int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    var treeIndex = i;
                    tasks[treeIndex] = Task.Run(async () =>
                    {
                        var file = sourceFiles[treeIndex];

                        var fileReadDiagnostics = new List<DiagnosticInfo>();
                        var result = await ReadFileContentAsync(file, fileReadDiagnostics, Arguments.Encoding).ConfigureAwait(false);

                        var content = result.Item1;
                        normalizedFilePaths[treeIndex] = result.Item2;

                        if (content == null)
                        {
                            PrintErrors(fileReadDiagnostics, consoleOutput);
                            fileReadDiagnostics.Clear();
                            hadErrors = true;
                            trees[treeIndex] = null;
                        }
                        else
                        {
                            trees[treeIndex] = ParseFile(parseOptions, scriptParseOptions, content, file);
                        }
                    });
                }

                Task.WaitAll(tasks);
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    var file = sourceFiles[i];

                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(consoleOutput, parseOptions, scriptParseOptions, ref hadErrors, file, out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (hadErrors)
            {
                return null;
            }

            var diagnostics = new List<DiagnosticInfo>();

            var uniqueFilePaths = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                        Arguments.PrintFullPaths ? normalizedFilePath : this.diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
            }

            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath = this.Arguments.AppConfigPath;
            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = new FileStream(appConfigPath, FileMode.Open, FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var metadataProvider = GetMetadataProvider();
            var xmlFileResolver = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray<string>.Empty, Arguments.BaseDirectory, touchedFilesLogger);

            var externalReferenceResolver = GetExternalMetadataResolver(touchedFilesLogger);
            MetadataReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(externalReferenceResolver, metadataProvider, diagnostics, assemblyIdentityComparer, touchedFilesLogger, out referenceDirectiveResolver);
            if (PrintErrors(diagnostics, consoleOutput))    
            {
                return null;
            }

            var strongNameProvider = new LoggingStrongNameProvider(Arguments.KeyFileSearchPaths, touchedFilesLogger);

            var compilation = CSharpCompilation.Create(
                Arguments.CompilationName,
                trees.WhereNotNull(),
                resolvedReferences,
                Arguments.CompilationOptions.
                    WithMetadataReferenceResolver(referenceDirectiveResolver).
                    WithMetadataReferenceProvider(metadataProvider).
                    WithAssemblyIdentityComparer(assemblyIdentityComparer).
                    WithStrongNameProvider(strongNameProvider).
                    WithXmlReferenceResolver(xmlFileResolver).
                    WithSourceReferenceResolver(sourceFileResolver));

            // Print the diagnostics produced during the parsing stage and exit if there were any errors.
            if (PrintErrors(compilation.GetParseDiagnostics(), consoleOutput))
            {
                return null;
            }

            if (PrintErrors(compilation.GetDeclarationDiagnostics(), consoleOutput))
            {
                return null;
            }

            return compilation;
        }
        public override Compilation CreateCompilation(TextWriter consoleOutput, TouchedFileLogger touchedFilesLogger, ErrorLogger errorLogger)
        {
#if XSHARP
            var parseOptions = Arguments.ParseOptions.WithOutput(consoleOutput);
#else
            var parseOptions = Arguments.ParseOptions;
#endif

            // We compute script parse options once so we don't have to do it repeatedly in
            // case there are many script files.
            var scriptParseOptions = parseOptions.WithKind(SourceCodeKind.Script);

            bool hadErrors = false;

            var sourceFiles         = Arguments.SourceFiles;
            var trees               = new SyntaxTree[sourceFiles.Length];
            var normalizedFilePaths = new string[sourceFiles.Length];
            var diagnosticBag       = DiagnosticBag.GetInstance();

            if (Arguments.CompilationOptions.ConcurrentBuild)
            {
                Parallel.For(0, sourceFiles.Length, UICultureUtilities.WithCurrentUICulture <int>(i =>
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], diagnosticBag, out normalizedFilePaths[i]);
                }));
            }
            else
            {
                for (int i = 0; i < sourceFiles.Length; i++)
                {
                    //NOTE: order of trees is important!!
                    trees[i] = ParseFile(parseOptions, scriptParseOptions, ref hadErrors, sourceFiles[i], diagnosticBag, out normalizedFilePaths[i]);
                }
            }

            // If errors had been reported in ParseFile, while trying to read files, then we should simply exit.
            if (hadErrors)
            {
                Debug.Assert(diagnosticBag.HasAnyErrors());
                ReportErrors(diagnosticBag.ToReadOnlyAndFree(), consoleOutput, errorLogger);
                return(null);
            }
            else
            {
                Debug.Assert(diagnosticBag.IsEmptyWithoutResolution);
                diagnosticBag.Free();
            }
#if XSHARP
            var newtree = InternalSyntax.XSharpLanguageParser.ProcessTrees(trees, parseOptions);
            if (newtree != null)
            {
                var newtrees = new SyntaxTree[trees.Length + 1];
                Array.Copy(trees, newtrees, trees.Length);
                newtrees[trees.Length] = newtree;
                trees = newtrees;
            }
#endif

            var diagnostics = new List <DiagnosticInfo>();

            var uniqueFilePaths = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
            for (int i = 0; i < sourceFiles.Length; i++)
            {
                var normalizedFilePath = normalizedFilePaths[i];
                Debug.Assert(normalizedFilePath != null);
                Debug.Assert(PathUtilities.IsAbsolute(normalizedFilePath));

                if (!uniqueFilePaths.Add(normalizedFilePath))
                {
                    // warning CS2002: Source file '{0}' specified multiple times
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.WRN_FileAlreadyIncluded,
                                                       Arguments.PrintFullPaths ? normalizedFilePath : _diagnosticFormatter.RelativizeNormalizedPath(normalizedFilePath)));

                    trees[i] = null;
                }
#if XSHARP
                else if (parseOptions.PreprocessorOutput && Arguments.TouchedFilesPath != null)
                {
                    touchedFilesLogger.AddWritten(FileNameUtilities.ChangeExtension(normalizedFilePath, ".ppo"));
                }
#endif
            }
#if XSHARP
            // Add the names of the header files that we have processed
            foreach (var tree in trees)
            {
                if (tree != null)
                {
                    if (tree.HasCompilationUnitRoot)
                    {
                        var root = tree.GetCompilationUnitRoot();
                        foreach (var file in root.IncludedFiles)
                        {
                            uniqueFilePaths.Add(file.Key);
                        }
                    }
                }
            }
#endif
            if (Arguments.TouchedFilesPath != null)
            {
                foreach (var path in uniqueFilePaths)
                {
                    touchedFilesLogger.AddRead(path);
                }
            }

            var assemblyIdentityComparer = DesktopAssemblyIdentityComparer.Default;
            var appConfigPath            = this.Arguments.AppConfigPath;
            if (appConfigPath != null)
            {
                try
                {
                    using (var appConfigStream = new FileStream(appConfigPath, FileMode.Open, FileAccess.Read))
                    {
                        assemblyIdentityComparer = DesktopAssemblyIdentityComparer.LoadFromXml(appConfigStream);
                    }

                    if (touchedFilesLogger != null)
                    {
                        touchedFilesLogger.AddRead(appConfigPath);
                    }
                }
                catch (Exception ex)
                {
                    diagnostics.Add(new DiagnosticInfo(MessageProvider, (int)ErrorCode.ERR_CantReadConfigFile, appConfigPath, ex.Message));
                }
            }

            var xmlFileResolver    = new LoggingXmlFileResolver(Arguments.BaseDirectory, touchedFilesLogger);
            var sourceFileResolver = new LoggingSourceFileResolver(ImmutableArray <string> .Empty, Arguments.BaseDirectory, Arguments.PathMap, touchedFilesLogger);

            MetadataReferenceResolver referenceDirectiveResolver;
            var resolvedReferences = ResolveMetadataReferences(diagnostics, touchedFilesLogger, out referenceDirectiveResolver);
            if (ReportErrors(diagnostics, consoleOutput, errorLogger))
            {
                return(null);
            }

            var loggingFileSystem = new LoggingStrongNameFileSystem(touchedFilesLogger);

            return(CSharpCompilation.Create(
                       Arguments.CompilationName,
                       trees.WhereNotNull(),
                       resolvedReferences,
                       Arguments.CompilationOptions.
                       WithMetadataReferenceResolver(referenceDirectiveResolver).
                       WithAssemblyIdentityComparer(assemblyIdentityComparer).
                       WithXmlReferenceResolver(xmlFileResolver).
                       WithStrongNameProvider(Arguments.GetStrongNameProvider(loggingFileSystem, _tempDirectory)).
                       WithSourceReferenceResolver(sourceFileResolver)));
        }