Object reference not set to an instance of an object. (Roslyn based fork)

[michaelm7456]

Hi all,

Reporting an issue I've ran into on the Roslyn based fork of this Repository here created by @vojtechkacmarik.

When creating a new 'Blazor' app then trying to open the Startup.cs file I get a 'NullReferenceException', possibly due to the way the Extension calculates Constructor complexity and hits an issue where a Constructor uses Expression Body syntax.

[Screenshot]

[Error Log]
System.NullReferenceException: Object reference not set to an instance of an object. at CodeMetrics.Parsing.Roslyn.ConstructorExtractor.Convert(ConstructorDeclarationSyntax constructorDeclarationSyntax) at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext()
 at System.Linq.Enumerable.<SelectManyIterator>d__172.MoveNext() at System.Linq.Enumerable.<OfTypeIterator>d__951.MoveNext()
 at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer)
 at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector) at CodeMetrics.Adornments.MetricsAdornment.Init(ITextSnapshot textSnapshot) at CodeMetrics.Adornments.MetricsAdornment..ctor(IWpfTextView view, IMethodsExtractor methodsExtractor, ICyclomaticComplexityCalculator cyclomaticComplexityCalculator) at CodeMetrics.Adornments.MeticsAdornmentFactory.TextViewCreated(IWpfTextView textView) at Microsoft.VisualStudio.Text.Editor.Implementation.WpfTextView.<>c__DisplayClass257_0.<BindContentTypeSpecificAssets>b__1() at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call) --- End of stack trace from previous location where exception was thrown --- at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)

The affected area seems to be the 'ConstructorExtractor.Convert' method.

Many thanks!