/// <summary>
        /// Initializes a new instance of <see cref="PrecompilationTagHelperTypeResolver"/>.
        /// </summary>
        /// <param name="compilation">The <see cref="CodeAnalysis.Compilation"/>.</param>
        public PrecompilationTagHelperTypeResolver(CodeAnalysis.Compilation compilation)
        {
            if (compilation == null)
            {
                throw new ArgumentNullException(nameof(compilation));
            }

            _compilation = compilation;
        }
Esempio n. 2
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        /// <summary>
        /// Discovers the available actions of the given machine.
        /// </summary>
        /// <param name="machine">The machine.</param>
        /// <param name="compilation">The compilation.</param>
        private void DiscoverMachineActions(ClassDeclarationSyntax machine, CodeAnalysis.Compilation compilation)
        {
            var model = compilation.GetSemanticModel(machine.SyntaxTree);

            var onEntryActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                     Where(val => this.IsState(compilation, val)).
                                     SelectMany(val => val.AttributeLists).
                                     SelectMany(val => val.Attributes).
                                     Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEntry")).
                                     Where(val => val.ArgumentList != null).
                                     Where(val => val.ArgumentList.Arguments.Count == 1).
                                     Where(val => val.ArgumentList.Arguments[0].Expression is LiteralExpressionSyntax).
                                     Select(val => val.ArgumentList.Arguments[0].Expression as LiteralExpressionSyntax).
                                     Select(val => val.Token.ValueText).
                                     ToList();

            var onEntryNameOfActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                           Where(val => this.IsState(compilation, val)).
                                           SelectMany(val => val.AttributeLists).
                                           SelectMany(val => val.Attributes).
                                           Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEntry")).
                                           Where(val => val.ArgumentList != null).
                                           Where(val => val.ArgumentList.Arguments.Count == 1).
                                           Where(val => val.ArgumentList.Arguments[0].Expression is InvocationExpressionSyntax).
                                           Select(val => val.ArgumentList.Arguments[0].Expression as InvocationExpressionSyntax).
                                           Where(val => val.Expression is IdentifierNameSyntax).
                                           Where(val => (val.Expression as IdentifierNameSyntax).Identifier.ValueText.Equals("nameof")).
                                           Where(val => val.ArgumentList != null).
                                           Where(val => val.ArgumentList.Arguments.Count == 1).
                                           Where(val => val.ArgumentList.Arguments[0].Expression is IdentifierNameSyntax).
                                           Select(val => val.ArgumentList.Arguments[0].Expression as IdentifierNameSyntax).
                                           Select(val => val.Identifier.ValueText).
                                           ToList();

            var onExitActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                    Where(val => this.IsState(compilation, val)).
                                    SelectMany(val => val.AttributeLists).
                                    SelectMany(val => val.Attributes).
                                    Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnExit")).
                                    Where(val => val.ArgumentList != null).
                                    Where(val => val.ArgumentList.Arguments.Count == 1).
                                    Where(val => val.ArgumentList.Arguments[0].Expression is LiteralExpressionSyntax).
                                    Select(val => val.ArgumentList.Arguments[0].Expression as LiteralExpressionSyntax).
                                    Select(val => val.Token.ValueText).
                                    ToList();

            var onExitNameOfActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                          Where(val => this.IsState(compilation, val)).
                                          SelectMany(val => val.AttributeLists).
                                          SelectMany(val => val.Attributes).
                                          Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnExit")).
                                          Where(val => val.ArgumentList != null).
                                          Where(val => val.ArgumentList.Arguments.Count == 1).
                                          Where(val => val.ArgumentList.Arguments[0].Expression is InvocationExpressionSyntax).
                                          Select(val => val.ArgumentList.Arguments[0].Expression as InvocationExpressionSyntax).
                                          Where(val => val.Expression is IdentifierNameSyntax).
                                          Where(val => (val.Expression as IdentifierNameSyntax).Identifier.ValueText.Equals("nameof")).
                                          Where(val => val.ArgumentList != null).
                                          Where(val => val.ArgumentList.Arguments.Count == 1).
                                          Where(val => val.ArgumentList.Arguments[0].Expression is IdentifierNameSyntax).
                                          Select(val => val.ArgumentList.Arguments[0].Expression as IdentifierNameSyntax).
                                          Select(val => val.Identifier.ValueText).
                                          ToList();

            var onEventDoActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                       Where(val => this.IsState(compilation, val)).
                                       SelectMany(val => val.AttributeLists).
                                       SelectMany(val => val.Attributes).
                                       Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEventDoAction")).
                                       Where(val => val.ArgumentList != null).
                                       Where(val => val.ArgumentList.Arguments.Count == 2).
                                       Where(val => val.ArgumentList.Arguments[1].Expression is LiteralExpressionSyntax).
                                       Select(val => val.ArgumentList.Arguments[1].Expression as LiteralExpressionSyntax).
                                       Select(val => val.Token.ValueText).
                                       ToList();

            var onEventDoNameOfActionNames = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                                             Where(val => this.IsState(compilation, val)).
                                             SelectMany(val => val.AttributeLists).
                                             SelectMany(val => val.Attributes).
                                             Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEventDoAction")).
                                             Where(val => val.ArgumentList != null).
                                             Where(val => val.ArgumentList.Arguments.Count == 2).
                                             Where(val => val.ArgumentList.Arguments[1].Expression is InvocationExpressionSyntax).
                                             Select(val => val.ArgumentList.Arguments[1].Expression as InvocationExpressionSyntax).
                                             Where(val => val.Expression is IdentifierNameSyntax).
                                             Where(val => (val.Expression as IdentifierNameSyntax).Identifier.ValueText.Equals("nameof")).
                                             Where(val => val.ArgumentList != null).
                                             Where(val => val.ArgumentList.Arguments.Count == 1).
                                             Where(val => val.ArgumentList.Arguments[0].Expression is IdentifierNameSyntax).
                                             Select(val => val.ArgumentList.Arguments[0].Expression as IdentifierNameSyntax).
                                             Select(val => val.Identifier.ValueText).
                                             ToList();

            var actionNames = new HashSet <string>();

            actionNames.UnionWith(onEntryActionNames);
            actionNames.UnionWith(onEntryNameOfActionNames);
            actionNames.UnionWith(onExitActionNames);
            actionNames.UnionWith(onExitNameOfActionNames);
            actionNames.UnionWith(onEventDoActionNames);
            actionNames.UnionWith(onEventDoNameOfActionNames);

            this.Actions.Add(machine, new List <MethodDeclarationSyntax>());

            foreach (var actionName in actionNames)
            {
                var action = machine.DescendantNodes().OfType <MethodDeclarationSyntax>().
                             Where(val => val.ParameterList != null).
                             Where(val => val.ParameterList.Parameters.Count == 0).
                             Where(val => val.Identifier.ValueText.Equals(actionName)).
                             FirstOrDefault();

                if (action != null)
                {
                    this.Actions[machine].Add(action);
                }
            }

            var states = machine.DescendantNodes().OfType <ClassDeclarationSyntax>().
                         Where(val => this.IsState(compilation, val)).
                         ToList();

            var stateMethods = states.SelectMany(val => val.DescendantNodes().OfType <MethodDeclarationSyntax>()).
                               Where(val => val.Modifiers.Any(SyntaxKind.OverrideKeyword)).
                               ToList();

            foreach (var method in stateMethods)
            {
                this.Actions[machine].Add(method);
            }
        }
 /// <summary>
 /// Returns true if the given class declaration is a state.
 /// </summary>
 /// <param name="compilation">Compilation</param>
 /// <param name="classDecl">Class declaration</param>
 /// <returns>Boolean</returns>
 protected override bool IsState(CodeAnalysis.Compilation compilation, ClassDeclarationSyntax classDecl)
 {
     return(Querying.IsMachineState(compilation, classDecl));
 }
Esempio n. 4
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 /// <summary>
 /// Returns true if the given class declaration is a machine.
 /// </summary>
 /// <param name="compilation">The compilation.</param>
 /// <param name="classDecl">Class declaration</param>
 /// <returns>Boolean</returns>
 protected abstract bool IsMachine(CodeAnalysis.Compilation compilation,
                                   ClassDeclarationSyntax classDecl);
Esempio n. 5
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 /// <summary>
 /// Returns true if the given class declaration is a stategroup.
 /// </summary>
 /// <param name="compilation">The compilation.</param>
 /// <param name="classDecl">Class declaration</param>
 /// <returns>Boolean</returns>
 protected abstract bool IsStateGroup(CodeAnalysis.Compilation compilation,
                                      ClassDeclarationSyntax classDecl);
Esempio n. 6
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        /// <summary>
        /// Compiles the given compilation to a file.
        /// </summary>
        /// <param name="compilation">Compilation</param>
        /// <param name="outputKind">OutputKind</param>
        /// <param name="outputPath">OutputPath</param>
        /// <param name="printResults">Prints the compilation results</param>
        /// <param name="buildDebugFile">Builds the debug file</param>
        /// <returns>Output</returns>
        public string ToFile(CodeAnalysis.Compilation compilation, OutputKind outputKind,
                             string outputPath, bool printResults, bool buildDebugFile)
        {
            string assemblyFileName = null;

            if (outputKind == OutputKind.ConsoleApplication)
            {
                assemblyFileName = compilation.AssemblyName + ".exe";
            }
            else if (outputKind == OutputKind.DynamicallyLinkedLibrary)
            {
                assemblyFileName = compilation.AssemblyName + ".dll";
            }

            string outputDirectory;

            if (!this.CompilationContext.Configuration.OutputFilePath.Equals(""))
            {
                outputDirectory = this.CompilationContext.Configuration.OutputFilePath;
            }
            else
            {
                outputDirectory = Path.GetDirectoryName(outputPath);
            }

            string fileName    = outputDirectory + Path.DirectorySeparatorChar + assemblyFileName;
            string pdbFileName = outputDirectory + Path.DirectorySeparatorChar + compilation.AssemblyName + ".pdb";

            this.OutputDirectoryMap?.Add(compilation.AssemblyName, outputDirectory);
            this.ProjectAssemblyPathMap?.Add(compilation.AssemblyName, fileName);

            EmitResult emitResult = null;

            using (FileStream outputFile = new FileStream(fileName, FileMode.Create, FileAccess.Write),
                   outputPdbFile = new FileStream(pdbFileName, FileMode.Create, FileAccess.Write))
            {
                if (buildDebugFile)
                {
                    emitResult = compilation.Emit(outputFile, outputPdbFile);
                }
                else
                {
                    emitResult = compilation.Emit(outputFile, null);
                }
            }

            if (emitResult.Success)
            {
                if (printResults)
                {
                    this.Logger.WriteLine("... Writing {0}", fileName);
                }

                return(fileName);
            }

            this.Logger.WriteLine("---");
            this.Logger.WriteLine("Note: the errors below correspond to the intermediate C#-IR, " +
                                  "which can be printed using /debug.");
            this.Logger.WriteLine("---");

            var message = string.Join("\r\n", emitResult.Diagnostics);

            throw new ApplicationException(message);
        }
 /// <summary>
 /// Checks for special properties.
 /// </summary>
 protected override void CheckForSpecialProperties(ClassDeclarationSyntax state, CodeAnalysis.Compilation compilation)
 {
     this.CheckForLivenessAttribute(state, compilation);
 }
Esempio n. 8
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        async Task <CodeCellEvaluationStatus> CoreEvaluateCodeCellAsync(
            CodeCellState codeCellState,
            CancellationToken cancellationToken = default(CancellationToken))
        {
            cancellationToken = ClientSession.CancellationToken.LinkWith(cancellationToken);

            if (!ClientSession.Agent.IsConnected || ClientSession.CompilationWorkspace == null)
            {
                codeCellState.View.IsEvaluating        = false;
                codeCellState.View.HasErrorDiagnostics = true;
                codeCellState.View.RenderDiagnostic(new Diagnostic(
                                                        DiagnosticSeverity.Error,
                                                        "Cannot evaluate: not connected to agent."));
                return(CodeCellEvaluationStatus.Disconnected);
            }

            CodeAnalysis.Compilation   compilation = null;
            IReadOnlyList <Diagnostic> diagnostics = null;
            ExceptionNode exception = null;
            bool          agentTerminatedWhileEvaluating = false;

            try {
                compilation = await ClientSession.CompilationWorkspace.EmitCellCompilationAsync(
                    codeCellState.CodeCellId,
                    new EvaluationEnvironment (ClientSession.WorkingDirectory),
                    cancellationToken);

                diagnostics = await ClientSession.CompilationWorkspace.GetCellDiagnosticsAsync(
                    codeCellState.CodeCellId,
                    cancellationToken);

                var integrationAssemblies = compilation
                                            .References
                                            .Where(ra => ra.HasIntegration)
                                            .ToArray();
                if (integrationAssemblies.Length > 0)
                {
                    await ClientSession.Agent.Api.LoadAssembliesAsync(
                        EvaluationContextId,
                        integrationAssemblies);
                }
            } catch (Exception e) {
                exception = ExceptionNode.Create(e);
            }

            var hasErrorDiagnostics = codeCellState.View.HasErrorDiagnostics = diagnostics
                                                                               .Any(d => d.Severity == DiagnosticSeverity.Error);

            foreach (var diagnostic in diagnostics)
            {
                codeCellState.View.RenderDiagnostic(diagnostic);
            }

            try {
                if (compilation != null)
                {
                    codeCellState.IsResultAnExpression = compilation.IsResultAnExpression;

                    await ClientSession.Agent.Api.EvaluateAsync(
                        compilation,
                        cancellationToken);
                }
            } catch (XipErrorMessageException e) {
                exception = e.XipErrorMessage.Exception;
            } catch (Exception e) {
                Log.Error(TAG, "marking agent as terminated", e);
                agentTerminatedWhileEvaluating         = true;
                codeCellState.View.HasErrorDiagnostics = true;
                codeCellState.View.RenderDiagnostic(new Diagnostic(
                                                        DiagnosticSeverity.Error,
                                                        Catalog.GetString(
                                                            "The application terminated during evaluation of this cell. " +
                                                            "Run this cell manually to try again.")));
            }

            codeCellState.View.IsEvaluating = false;

            CodeCellEvaluationStatus evaluationStatus;

            if (exception != null)
            {
                codeCellState.View.RenderResult(
                    CultureInfo.CurrentCulture,
                    EvaluationService.FilterException(exception),
                    EvaluationResultHandling.Replace);
                evaluationStatus = CodeCellEvaluationStatus.EvaluationException;
            }
            else if (hasErrorDiagnostics)
            {
                return(CodeCellEvaluationStatus.ErrorDiagnostic);
            }
            else if (agentTerminatedWhileEvaluating)
            {
                evaluationStatus = CodeCellEvaluationStatus.Disconnected;
            }
            else
            {
                evaluationStatus = CodeCellEvaluationStatus.Success;
            }

            if (ClientSession.SessionKind != ClientSessionKind.Workbook)
            {
                codeCellState.Freeze();
            }

            codeCellState.NotifyEvaluated(agentTerminatedWhileEvaluating);
            return(evaluationStatus);
        }
Esempio n. 9
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        async Task <CodeCellEvaluationStatus> CoreEvaluateCodeCellAsync(
            CodeCellState codeCellState,
            CancellationToken cancellationToken = default(CancellationToken))
        {
            cancellationToken = ClientSession.CancellationToken.LinkWith(cancellationToken);

            if (!ClientSession.Agent.IsConnected || ClientSession.CompilationWorkspace == null)
            {
                codeCellState.View.IsEvaluating        = false;
                codeCellState.View.HasErrorDiagnostics = true;
                codeCellState.View.RenderDiagnostic(new InteractiveDiagnostic(
                                                        DiagnosticSeverity.Error,
                                                        "Cannot evaluate: not connected to agent."));
                return(CodeCellEvaluationStatus.Disconnected);
            }

            CodeAnalysis.Compilation compilation = null;
            ExceptionNode            exception   = null;
            bool agentTerminatedWhileEvaluating  = false;

            try {
                compilation = await ClientSession.CompilationWorkspace.GetSubmissionCompilationAsync(
                    codeCellState.DocumentId,
                    new EvaluationEnvironment (ClientSession.WorkingDirectory),
                    cancellationToken);

                var integrationAssemblies = compilation
                                            .References
                                            .Where(ra => ra.HasIntegration)
                                            .ToArray();
                if (integrationAssemblies.Length > 0)
                {
                    await ClientSession.Agent.Api.LoadAssembliesAsync(
                        ClientSession.CompilationWorkspace.EvaluationContextId,
                        integrationAssemblies);
                }

                foreach (var dependency in ClientSession.CompilationWorkspace.WebDependencies)
                {
                    if (ClientSession.AddWebResource(dependency.Location, out var guid))
                    {
                        await LoadWorkbookDependencyAsync(guid + dependency.Location.Extension);
                    }
                }
            } catch (Exception e) {
                exception = ExceptionNode.Create(e);
            }

            var diagnostics = ClientSession.CompilationWorkspace.CurrentSubmissionDiagnostics.Filter();

            codeCellState.View.HasErrorDiagnostics = diagnostics.HasErrors;

            foreach (var diagnostic in diagnostics)
            {
                codeCellState.View.RenderDiagnostic((InteractiveDiagnostic)diagnostic);
            }

            try {
                if (compilation != null)
                {
                    codeCellState.LastEvaluationRequestId = compilation.MessageId;
                    codeCellState.IsResultAnExpression    = compilation.IsResultAnExpression;

                    await ClientSession.Agent.Api.EvaluateAsync(
                        compilation,
                        cancellationToken);
                }
            } catch (XipErrorMessageException e) {
                exception = e.XipErrorMessage.Exception;
            } catch (Exception e) {
                Log.Error(TAG, "marking agent as terminated", e);
                agentTerminatedWhileEvaluating         = true;
                codeCellState.View.HasErrorDiagnostics = true;
                codeCellState.View.RenderDiagnostic(new InteractiveDiagnostic(
                                                        DiagnosticSeverity.Error,
                                                        Catalog.GetString(
                                                            "The application terminated during evaluation of this cell. " +
                                                            "Run this cell manually to try again.")));
            }

            codeCellState.View.IsEvaluating = false;

            CodeCellEvaluationStatus evaluationStatus;

            if (exception != null)
            {
                codeCellState.View.RenderResult(
                    CultureInfo.CurrentCulture,
                    FilterException(exception),
                    EvaluationResultHandling.Replace);
                evaluationStatus = CodeCellEvaluationStatus.EvaluationException;
            }
            else if (diagnostics.HasErrors)
            {
                return(CodeCellEvaluationStatus.ErrorDiagnostic);
            }
            else if (agentTerminatedWhileEvaluating)
            {
                evaluationStatus = CodeCellEvaluationStatus.Disconnected;
            }
            else
            {
                evaluationStatus = CodeCellEvaluationStatus.Success;
            }

            if (ClientSession.SessionKind != ClientSessionKind.Workbook)
            {
                codeCellState.Freeze();
            }

            codeCellState.NotifyEvaluated(agentTerminatedWhileEvaluating);
            return(evaluationStatus);
        }
Esempio n. 10
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 /// <summary>
 /// Returns true if the given class declaration is a stategroup.
 /// </summary>
 protected override bool IsStateGroup(CodeAnalysis.Compilation compilation, ClassDeclarationSyntax classDecl) =>
 Querying.IsMachineStateGroup(compilation, classDecl);
Esempio n. 11
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 /// <summary>
 /// Returns true if the given class declaration is a state.
 /// </summary>
 protected override bool IsState(CodeAnalysis.Compilation compilation, ClassDeclarationSyntax classDecl) =>
 Querying.IsMonitorState(compilation, classDecl);
Esempio n. 12
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        /// <summary>
        /// Checks that a state does not have a duplicate liveness attribute.
        /// </summary>
        /// <param name="state">State</param>
        /// <param name="compilation">Compilation</param>
        private void CheckForDuplicateLivenessAttributes(ClassDeclarationSyntax state, CodeAnalysis.Compilation compilation)
        {
            var model = compilation.GetSemanticModel(state.SyntaxTree);

            var hotAttributes = state.AttributeLists.
                                SelectMany(val => val.Attributes).
                                Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.Hot")).
                                ToList();

            var coldAttributes = state.AttributeLists.
                                 SelectMany(val => val.Attributes).
                                 Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.Cold")).
                                 ToList();

            if (hotAttributes.Count > 0 && coldAttributes.Count > 0)
            {
                base.ErrorLog.Add(Tuple.Create(state.Identifier, "A monitor state cannot declare both " +
                                               "hot and cold liveness attributes."));
            }
        }
Esempio n. 13
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 /// <summary>
 /// Checks for special properties.
 /// </summary>
 /// <param name="state">State</param>
 /// <param name="compilation">Compilation</param>
 protected abstract void CheckForSpecialProperties(ClassDeclarationSyntax state,
                                                   CodeAnalysis.Compilation compilation);
Esempio n. 14
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        /// <summary>
        /// Checks for correct wildcard usage.
        /// If "defer *" then:
        ///    no other event should be deferred.
        /// If "ignore *" or "on * do action" then:
        ///    no other action or ignore should be defined.
        /// If "On * goto" or "On * push" then:
        ///    no other transition, action or ignore should be defined.
        /// </summary>
        /// <param name="state">State</param>
        /// <param name="compilation">Compilation</param>
        private void CheckForCorrectWildcardUse(ClassDeclarationSyntax state, CodeAnalysis.Compilation compilation)
        {
            var model = compilation.GetSemanticModel(state.SyntaxTree);

            var ignoreTypes = state.AttributeLists.
                              SelectMany(val => val.Attributes).
                              Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.IgnoreEvents")).
                              Where(val => val.ArgumentList != null).
                              Where(val => val.ArgumentList.Arguments.Count > 0).
                              SelectMany(val => val.ArgumentList.Arguments).
                              Where(val => val.Expression is TypeOfExpressionSyntax).
                              Select(val => val.Expression as TypeOfExpressionSyntax);

            var deferTypes = state.AttributeLists.
                             SelectMany(val => val.Attributes).
                             Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.DeferEvents")).
                             Where(val => val.ArgumentList != null).
                             Where(val => val.ArgumentList.Arguments.Count > 0).
                             SelectMany(val => val.ArgumentList.Arguments).
                             Where(val => val.Expression is TypeOfExpressionSyntax).
                             Select(val => val.Expression as TypeOfExpressionSyntax);

            var actionTypes = state.AttributeLists.
                              SelectMany(val => val.Attributes).
                              Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEventDoAction")).
                              Where(val => val.ArgumentList != null).
                              Where(val => val.ArgumentList.Arguments.Count > 0).
                              Where(val => val.ArgumentList.Arguments[0].Expression is TypeOfExpressionSyntax).
                              Select(val => val.ArgumentList.Arguments[0].Expression as TypeOfExpressionSyntax);

            var transitionTypes = state.AttributeLists.
                                  SelectMany(val => val.Attributes).
                                  Where(val => model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEventGotoState") ||
                                        model.GetTypeInfo(val).Type.ToDisplayString().Equals("Microsoft.PSharp.OnEventPushState")).
                                  Where(val => val.ArgumentList != null).
                                  Where(val => val.ArgumentList.Arguments.Count > 0).
                                  Where(val => val.ArgumentList.Arguments[0].Expression is TypeOfExpressionSyntax).
                                  Select(val => val.ArgumentList.Arguments[0].Expression as TypeOfExpressionSyntax);

            var convertToStringSet = new Func <IEnumerable <TypeOfExpressionSyntax>, HashSet <string> >(ls =>
            {
                var eventHandlers = new HashSet <string>(ls.
                                                         Where(val => val.Type is IdentifierNameSyntax).
                                                         Select(val => val.Type as IdentifierNameSyntax).
                                                         Select(val => val.ToFullString()));

                eventHandlers.UnionWith(ls.
                                        Where(val => val.Type is QualifiedNameSyntax).
                                        Select(val => val.Type as QualifiedNameSyntax).
                                        Select(val => val.ToFullString()));

                return(eventHandlers);
            });

            var ignoredEvents    = convertToStringSet(ignoreTypes);
            var deferredEvents   = convertToStringSet(deferTypes);
            var actionEvents     = convertToStringSet(actionTypes);
            var transitionEvents = convertToStringSet(transitionTypes);

            var isWildCard  = new Func <string, bool>(s => s == "WildCardEvent" || s == "Microsoft.PSharp.WildCardEvent");
            var hasWildCard = new Func <HashSet <string>, bool>(set => set.Contains("WildCardEvent") ||
                                                                set.Contains("Microsoft.PSharp.WildCardEvent"));

            if (hasWildCard(deferredEvents))
            {
                foreach (var e in deferredEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot defer other event '" + e + "' when deferring the wildcard event."));
                }
            }

            if (hasWildCard(ignoredEvents))
            {
                foreach (var e in ignoredEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot ignore other event '" + e + "' when ignoring the wildcard event."));
                }

                foreach (var e in actionEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot define action on '" + e + "' when ignoring the wildcard event."));
                }
            }

            if (hasWildCard(actionEvents))
            {
                foreach (var e in ignoredEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot ignore other event '" + e + "' when defining an action on the wildcard event."));
                }

                foreach (var e in actionEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot define action on '" + e + "' when defining an action on the wildcard event."));
                }
            }

            if (hasWildCard(transitionEvents))
            {
                foreach (var e in ignoredEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot ignore other event '" + e + "' when defining a transition on the wildcard event."));
                }

                foreach (var e in actionEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot define action on '" + e + "' when defining a transition on the wildcard event."));
                }

                foreach (var e in transitionEvents.Where(s => !isWildCard(s)))
                {
                    base.ErrorLog.Add(Tuple.Create(state.Identifier, "State '" + state.Identifier.ValueText +
                                                   "' cannot define a transition on '" + e + "' when defining a transition on the wildcard event."));
                }
            }
        }