icsharpcode · GrahamTheCoder · Mar 11, 2020 · Mar 8, 2020 · Mar 8, 2020 · Mar 8, 2020
diff --git a/CodeConverter/CSharp/CachedReflectedDelegates.cs b/CodeConverter/CSharp/CachedReflectedDelegates.cs
@@ -19,16 +19,6 @@ namespace ICSharpCode.CodeConverter.CSharp
     /// </remarks>
     internal static class CachedReflectedDelegates
     {
-        /// <summary>
-        /// This method becomes public in CodeAnalysis 3.1 and hence we can be confident it won't disappear.
-        /// Need to use reflection for now until that version is widely enough deployed as taking a dependency would mean everyone needs latest VS version.
-        /// </summary>
-        public static readonly Lazy<Func<CompilationOptions, byte, CompilationOptions>> LazyWithMetadataImportOptions =
-            new Lazy<Func<CompilationOptions, byte, CompilationOptions>>(() => typeof(CompilationOptions)
-                .GetMethod("WithMetadataImportOptions",
-                    BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)
-                .CreateOpenInstanceDelegateForcingType<CompilationOptions, byte, CompilationOptions>());
-
         public static bool IsMyGroupCollectionProperty(this IPropertySymbol declaredSymbol) =>
             GetCachedReflectedPropertyDelegate(declaredSymbol, "IsMyGroupCollectionProperty", ref _isMyGroupCollectionProperty);
         private static Func<ISymbol, bool> _isMyGroupCollectionProperty;

diff --git a/CodeConverter/CSharp/ExpressionNodeVisitor.cs b/CodeConverter/CSharp/ExpressionNodeVisitor.cs
@@ -447,7 +447,13 @@ public override async Task<CSharpSyntaxNode> VisitSimpleArgument(VBasic.Syntax.S
 
         public override async Task<CSharpSyntaxNode> VisitNameOfExpression(VBasic.Syntax.NameOfExpressionSyntax node)
         {
-            return SyntaxFactory.InvocationExpression(SyntaxFactory.IdentifierName("nameof"), SyntaxFactory.ArgumentList(SyntaxFactory.SingletonSeparatedList(SyntaxFactory.Argument((ExpressionSyntax) await node.Argument.AcceptAsync(TriviaConvertingExpressionVisitor)))));
+            return SyntaxFactory.InvocationExpression(NameOf(), SyntaxFactory.ArgumentList(SyntaxFactory.SingletonSeparatedList<ArgumentSyntax>(SyntaxFactory.Argument((ExpressionSyntax)await node.Argument.AcceptAsync(TriviaConvertingExpressionVisitor)))));
+        }
+
+        private static ExpressionSyntax NameOf()
+        {
+            // Usually it'd be preferable to just construct the Identifier ourselves, but the opportunity to inject parse options lets us control the LanguageVersion which needs to be high enough not to consider nameof an error
+            return SyntaxFactory.ParseExpression("nameof", options: CSharpCompiler.ParseOptions);
         }
 
         public override async Task<CSharpSyntaxNode> VisitEqualsValue(VBasic.Syntax.EqualsValueSyntax node)
@@ -486,10 +492,8 @@ public override async Task<CSharpSyntaxNode> VisitArrayCreationExpression(VBasic
         {
             var bounds = await CommonConversions.ConvertArrayRankSpecifierSyntaxes(node.RankSpecifiers, node.ArrayBounds);
 
-            var allowInitializer = node.Initializer.Initializers.Any()
-                || node.RankSpecifiers.Any()
-                || node.ArrayBounds == null
-                || (node.Initializer.Initializers.Any() && node.ArrayBounds.Arguments.All(b => b.IsOmitted || _semanticModel.GetConstantValue(b.GetExpression()).HasValue));
+            var allowInitializer = node.ArrayBounds?.Arguments.Any() != true ||
+                node.Initializer.Initializers.Any() && node.ArrayBounds.Arguments.All(b => b.IsOmitted || _semanticModel.GetConstantValue(b.GetExpression()).HasValue);
 
             var initializerToConvert = allowInitializer ? node.Initializer : null;
             return SyntaxFactory.ArrayCreationExpression(
@@ -507,15 +511,18 @@ public override async Task<CSharpSyntaxNode> VisitCollectionInitializer(VBasic.S
             var initializers = (await node.Initializers.SelectAsync(i => i.AcceptAsync(TriviaConvertingExpressionVisitor))).Cast<ExpressionSyntax>();
             var initializer = SyntaxFactory.InitializerExpression(initializerKind, SyntaxFactory.SeparatedList(initializers));
             if (isExplicitCollectionInitializer) return initializer;
-
-            if (!initializers.Any() && _semanticModel.GetTypeInfo(node).ConvertedType is IArrayTypeSymbol arrayType) {
+
+            if (!(_semanticModel.GetTypeInfo(node).ConvertedType is IArrayTypeSymbol arrayType)) return SyntaxFactory.ImplicitArrayCreationExpression(initializer);
+
+            if (!initializers.Any()) {
 
                 var arrayTypeArgs = SyntaxFactory.TypeArgumentList(SyntaxFactory.SingletonSeparatedList(CommonConversions.GetTypeSyntax(arrayType.ElementType)));
                 var arrayEmpty = SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression,
                     SyntaxFactory.IdentifierName(nameof(Array)), SyntaxFactory.GenericName(nameof(Array.Empty)).WithTypeArgumentList(arrayTypeArgs));
                 return SyntaxFactory.InvocationExpression(arrayEmpty);
             }
-            return SyntaxFactory.ImplicitArrayCreationExpression(initializer);
+            var commas = Enumerable.Repeat(SyntaxFactory.Token(SyntaxKind.CommaToken), arrayType.Rank - 1);
+            return SyntaxFactory.ImplicitArrayCreationExpression(SyntaxFactory.TokenList(commas), initializer);
         }
 
         public override async Task<CSharpSyntaxNode> VisitQueryExpression(VBasic.Syntax.QueryExpressionSyntax node)

diff --git a/CodeConverter/CSharp/ProjectExtensions.cs b/CodeConverter/CSharp/ProjectExtensions.cs
@@ -10,13 +10,13 @@ internal static class ProjectExtensions
     {
         private static char[] DirSeparators = new[] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar };
 
-        public static Project CreateReferenceOnlyProjectFromAnyOptions(this Project project, CompilationOptions baseOptions)
+        public static Project CreateReferenceOnlyProjectFromAnyOptions(this Project project, CompilationOptions baseOptions, ParseOptions parseOptions)
         {
-            var options = baseOptions.WithMetadataImportOptionsAll();
+            var options = baseOptions.WithMetadataImportOptions(MetadataImportOptions.All);
             var viewerId = ProjectId.CreateNewId();
             var projectReferences = project.ProjectReferences.Concat(new[] {new ProjectReference(project.Id)});
             var viewerProjectInfo = project.ToProjectInfo(viewerId, project.Name + viewerId, options,
-                projectReferences);
+                projectReferences, parseOptions);
             var csharpViewOfVbProject = project.Solution.AddProject(viewerProjectInfo).GetProject(viewerId);
             return csharpViewOfVbProject;
         }
@@ -70,10 +70,10 @@ public static (Project project, List<WipFileConversion<DocumentId>> firstPassDoc
                 DocumentId docId = null;
                 if (firstPassResult.Wip != null)
                 {
-                    var document = project.AddDocument(firstPassResult.Path, firstPassResult.Wip,
+                    docId = DocumentId.CreateNewId(project.Id);
+                    var solution = project.Solution.AddDocument(docId, firstPassResult.Path, firstPassResult.Wip,
                         filePath: firstPassResult.Path);
-                    project = document.Project;
-                    docId = document.Id;
+                    project = solution.GetProject(project.Id);
                 }
 
                 return WipFileConversion.Create(firstPassResult.Path, docId, firstPassResult.Errors);

diff --git a/CodeConverter/CSharp/ProjectMergedDeclarationExtensions.cs b/CodeConverter/CSharp/ProjectMergedDeclarationExtensions.cs
@@ -9,6 +9,7 @@
 using Microsoft.CodeAnalysis.Rename;
 using Microsoft.CodeAnalysis.VisualBasic;
 using System.Threading;
+using System.Collections.Generic;
 
 namespace ICSharpCode.CodeConverter.CSharp
 {
@@ -26,11 +27,12 @@ public static async Task<Project> WithRenamedMergedMyNamespace(this Project vbPr
             var projectDir = Path.Combine(vbProject.GetDirectoryPath(), "My Project");
 
             var compilation = await vbProject.GetCompilationAsync(cancellationToken);
-            string embeddedSourceText = (await GetAllEmbeddedSourceText(compilation));
-            string generatedSourceText = (await GetDynamicallyGeneratedSourceText(compilation));
+            var embeddedSourceTexts = await GetAllEmbeddedSourceText(compilation).Select((r, i) => (Text: r, Suffix: $".Static.{i+1}")).ToArrayAsync();
+            var generatedSourceTexts = (Text: await GetDynamicallyGeneratedSourceText(compilation), Suffix: ".Dynamic").Yield();
 
-            vbProject = WithRenamespacedDocument(name + ".Static", vbProject, embeddedSourceText, projectDir);
-            vbProject = WithRenamespacedDocument(name + ".Dynamic", vbProject, generatedSourceText, projectDir);
+            foreach (var (text, suffix) in embeddedSourceTexts.Concat(generatedSourceTexts)) {
+                vbProject = WithRenamespacedDocument(name + suffix, vbProject, text, projectDir);
+            }
 
             return vbProject;
         }
@@ -41,15 +43,12 @@ private static Project WithRenamespacedDocument(string baseName, Project vbProje
             return vbProject.AddDocument(baseName, sourceText.Renamespace(), filePath: Path.Combine(myProjectDirPath, baseName + ".Designer.vb")).Project;
         }
 
-        private static async Task<string> GetAllEmbeddedSourceText(Compilation compilation)
+        private static async IAsyncEnumerable<string> GetAllEmbeddedSourceText(Compilation compilation)
         {
             var roots = await compilation.SourceModule.GlobalNamespace.Locations.
                 Where(l => !l.IsInSource).Select(CachedReflectedDelegates.GetEmbeddedSyntaxTree)
                 .SelectAsync(t => t.GetTextAsync());
-            var renamespacesRootTexts =
-                roots.Select(r => r.ToString());
-            var combined = string.Join(Environment.NewLine, renamespacesRootTexts);
-            return combined;
+            foreach (var r in roots) yield return r.ToString();
         }
 
         private static async Task<string> GetDynamicallyGeneratedSourceText(Compilation compilation)
@@ -109,6 +108,7 @@ private static string Renamespace(this string sourceText)
         {
             return sourceText
                 .Replace("Namespace Global.Microsoft.VisualBasic", $"Namespace Global.Microsoft.{Constants.MergedMsVbNamespace}")
+                .Replace("Global.Microsoft.VisualBasic.Embedded", $"Global.Microsoft.{Constants.MergedMsVbNamespace}.Embedded")
                 .Replace("Namespace My", $"Namespace {Constants.MergedMyNamespace}");
         }
 

diff --git a/CodeConverter/CSharp/VBToCSProjectContentsConverter.cs b/CodeConverter/CSharp/VBToCSProjectContentsConverter.cs
@@ -20,14 +20,6 @@ internal class VBToCSProjectContentsConverter : IProjectContentsConverter
         private CSharpCompilation _csharpViewOfVbSymbols;
         private Project _convertedCsProject;
 
-        /// <summary>
-        /// It's really hard to change simplifier options since everything is done on the Object hashcode of internal fields.
-        /// I wanted to avoid saying "default" instead of "default(string)" because I don't want to force a later language version on people in such a common case.
-        /// This will have that effect, but also has the possibility of failing to interpret code output by this converter.
-        /// If this has such unintended effects in future, investigate the code that loads options from an editorconfig file
-        /// </summary>
-        private static readonly CSharpParseOptions DoNotAllowImplicitDefault = CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.CSharp7);
-
         private Project _csharpReferenceProject;
         private readonly IProgress<ConversionProgress> _progress;
         private readonly CancellationToken _cancellationToken;
@@ -45,8 +37,8 @@ public VBToCSProjectContentsConverter(ConversionOptions conversionOptions, IProg
         public async Task InitializeSourceAsync(Project project)
         {
             var cSharpCompilationOptions = CSharpCompiler.CreateCompilationOptions();
-            _convertedCsProject = project.ToProjectFromAnyOptions(cSharpCompilationOptions, DoNotAllowImplicitDefault);
-            _csharpReferenceProject = project.CreateReferenceOnlyProjectFromAnyOptions(cSharpCompilationOptions);
+            _convertedCsProject = project.ToProjectFromAnyOptions(cSharpCompilationOptions, CSharpCompiler.ParseOptions);
+            _csharpReferenceProject = project.CreateReferenceOnlyProjectFromAnyOptions(cSharpCompilationOptions, CSharpCompiler.ParseOptions);
             _csharpViewOfVbSymbols = (CSharpCompilation) await _csharpReferenceProject.GetCompilationAsync(_cancellationToken);
             Project = await project.WithRenamedMergedMyNamespace(_cancellationToken);
         }

diff --git a/CodeConverter/ConversionResult.cs b/CodeConverter/ConversionResult.cs
@@ -57,7 +57,7 @@ public string GetExceptionsAsString()
         public void WriteToFile()
         {
             Directory.CreateDirectory(Path.GetDirectoryName(TargetPathOrNull));
-            File.WriteAllText(TargetPathOrNull, ConvertedCode, Encoding.UTF8);
+            File.WriteAllText(TargetPathOrNull, ConvertedCode ?? GetExceptionsAsString(), Encoding.UTF8);
         }
     }
 }
diff --git a/CodeConverter/Shared/CompilationOptionsExtensions.cs b/CodeConverter/Shared/CompilationOptionsExtensions.cs
@@ -28,10 +28,5 @@ public static Document CreateProjectDocumentFromTree(this CompilationOptions opt
                 .WithMetadataReferences(references);
             return project.AddDocument("CodeToConvert", tree.GetRoot(), filePath: Path.Combine(Directory.GetCurrentDirectory(), "TempCodeToConvert.txt"));
         }
-
-        public static CompilationOptions WithMetadataImportOptionsAll(this CompilationOptions baseOptions)
-        {
-            return CachedReflectedDelegates.LazyWithMetadataImportOptions.Value(baseOptions, 2 /*MetadataImportOptions.All*/);
-        }
     }
 }
diff --git a/CodeConverter/Shared/ProjectConversion.cs b/CodeConverter/Shared/ProjectConversion.cs
@@ -19,23 +19,19 @@ public class ProjectConversion
     {
         private readonly IReadOnlyCollection<Document> _documentsToConvert;
         private readonly ILanguageConversion _languageConversion;
-        private readonly bool _showCompilationErrors =
-#if DEBUG && ShowCompilationErrors
-            true;
-#else
-            false;
-#endif
+        private readonly bool _showCompilationErrors;
         private readonly bool _returnSelectedNode;
         private static readonly string[] BannedPaths = new[] { ".AssemblyAttributes.", "\\bin\\", "\\obj\\" };
         private readonly IProjectContentsConverter _projectContentsConverter;
         private readonly CancellationToken _cancellationToken;
 
         private ProjectConversion(IProjectContentsConverter projectContentsConverter, IEnumerable<Document> documentsToConvert,
-            ILanguageConversion languageConversion, CancellationToken cancellationToken, bool returnSelectedNode = false)
+            ILanguageConversion languageConversion, CancellationToken cancellationToken, bool showCompilationErrors, bool returnSelectedNode = false)
         {
             _projectContentsConverter = projectContentsConverter;
             _languageConversion = languageConversion;
             _documentsToConvert = documentsToConvert.ToList();
+            _showCompilationErrors = showCompilationErrors;
             _returnSelectedNode = returnSelectedNode;
             _cancellationToken = cancellationToken;
         }
@@ -69,7 +65,7 @@ private ProjectConversion(IProjectContentsConverter projectContentsConverter, IE
 
             document = projectContentsConverter.Project.GetDocument(document.Id);
 
-            var conversion = new ProjectConversion(projectContentsConverter, new[] { document }, languageConversion, cancellationToken, returnSelectedNode);
+            var conversion = new ProjectConversion(projectContentsConverter, new[] { document }, languageConversion, cancellationToken, conversionOptions.ShowCompilationErrors, returnSelectedNode);
             var conversionResults = await conversion.Convert(progress).ToArrayAsync();
             var codeResult = conversionResults.SingleOrDefault(x => !string.IsNullOrWhiteSpace(x.ConvertedCode))
                              ?? conversionResults.First();
@@ -154,7 +150,7 @@ private static async IAsyncEnumerable<ConversionResult> ConvertProjectContents(
             //Perf heuristic: Decrease memory pressure on the simplification phase by converting large files first https://github.com/icsharpcode/CodeConverter/issues/524#issuecomment-590301594
             var documentsToConvert = documentsWithLengths.OrderByDescending(d => d.Length).Select(d => d.Doc);
 
-            var projectConversion = new ProjectConversion(projectContentsConverter, documentsToConvert, languageConversion, cancellationToken);
+            var projectConversion = new ProjectConversion(projectContentsConverter, documentsToConvert, languageConversion, cancellationToken, false);
 
             var results = projectConversion.Convert(progress);
             await foreach (var result in results) yield return result;
@@ -168,8 +164,8 @@ private async IAsyncEnumerable<ConversionResult> Convert(IProgress<ConversionPro
             var (proj1, docs1) = await _projectContentsConverter.GetConvertedProject(await firstPassResults.ToArrayAsync());
 
             var warnings = await GetProjectWarnings(_projectContentsConverter.Project, proj1);
-            if (warnings != null) {
-                var warningPath = Path.Combine(proj1.GetDirectoryPath(), "ConversionWarnings.txt");
+            if (!string.IsNullOrWhiteSpace(warnings)) {
+                var warningPath = Path.Combine(_projectContentsConverter.Project.GetDirectoryPath(), "ConversionWarnings.txt");
                 yield return new ConversionResult() { SourcePathOrNull = warningPath, Exceptions = new[] { warnings } };
             }
 

diff --git a/CodeConverter/Shared/SingleConversionOptions.cs b/CodeConverter/Shared/SingleConversionOptions.cs
@@ -5,5 +5,6 @@ namespace ICSharpCode.CodeConverter.Shared
     public class SingleConversionOptions : ConversionOptions
     {
         public TextSpan SelectedTextSpan { get; set; } = new TextSpan();
+        internal bool ShowCompilationErrors { get; set; }
     }
 }
diff --git a/CodeConverter/Util/CSharpCompiler.cs b/CodeConverter/Util/CSharpCompiler.cs
@@ -13,7 +13,7 @@ public class CSharpCompiler : ICompiler
 
         public SyntaxTree CreateTree(string text)
         {
-            return SyntaxFactory.ParseSyntaxTree(text, encoding: Encoding.UTF8);
+            return SyntaxFactory.ParseSyntaxTree(text, ParseOptions, encoding: Encoding.UTF8);
         }
 
         public Compilation CreateCompilationFromTree(SyntaxTree tree, IEnumerable<MetadataReference> references)
@@ -34,7 +34,9 @@ private static CSharpCompilation CreateCSharpCompilation()
 
         public static CSharpCompilationOptions CreateCompilationOptions()
         {
-            return new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);
+            return new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary, allowUnsafe: true);
         }
+
+        public static CSharpParseOptions ParseOptions { get; } = new CSharpParseOptions(LanguageVersion.Latest);
     }
 }
diff --git a/CodeConverter/Util/CompilationWarnings.cs b/CodeConverter/Util/CompilationWarnings.cs
@@ -11,7 +11,7 @@ public static string WarningsForCompilation(Compilation finalCompilation, string
         {
             var targetErrors = GetDiagnostics(finalCompilation);
             return targetErrors.Any()
-                ? $"{targetErrors.Count} {compilationDescription} compilation errors:{Environment.NewLine}{String.Join(Environment.NewLine, targetErrors)}"
+                ? $"{Environment.NewLine}{targetErrors.Count} {compilationDescription} compilation errors:{Environment.NewLine}{String.Join(Environment.NewLine, targetErrors)}"
                 : null;
         }
 
@@ -20,6 +20,7 @@ private static List<string> GetDiagnostics(Compilation compilation)
             var diagnostics = compilation.GetDiagnostics()
                 .Where(d => d.Severity == DiagnosticSeverity.Error)
                 .Select(d => $"{d.Id}: {d.GetMessage()}")
+                .Distinct()
                 .ToList();
             return diagnostics;
         }

diff --git a/CodeConverter/Util/VisualBasicCompiler.cs b/CodeConverter/Util/VisualBasicCompiler.cs
@@ -24,7 +24,7 @@ public VisualBasicCompiler(string rootNamespace)
 
         public SyntaxTree CreateTree(string text)
         {
-            return SyntaxFactory.ParseSyntaxTree(text, encoding: Encoding.UTF8);
+            return SyntaxFactory.ParseSyntaxTree(text, ParseOptions, encoding: Encoding.UTF8);
         }
 
         public Compilation CreateCompilationFromTree(SyntaxTree tree, IEnumerable<MetadataReference> references)
@@ -75,5 +75,7 @@ public static VisualBasicCompilationOptions CreateCompilationOptions(string root
                 .WithRootNamespace(rootNamespace);
             return compilationOptions;
         }
+
+        public static VisualBasicParseOptions ParseOptions { get; } = new VisualBasicParseOptions(LanguageVersion.Latest);
     }
 }