private static void AnalyzeMethod()

in src/Analyzers/ExpressionDefinition.Analyzer.cs [53:84]

28 lines of code
5 McCabe index (conditional complexity)


    private static void AnalyzeMethod(SyntaxNodeAnalysisContext context)
    {
        if (context.Node is not MethodDeclarationSyntax method)
        {
            throw new Exception();
        }

        var model = context.SemanticModel;

        var isExpression = method.AttributeLists.ContainsExpressionAttribute(model);
        if (!isExpression) return;

        var type = model.GetTypeInfo(method.ReturnType).Type;
        if (type == null)
        {
            var diagnostic = Diagnostic.Create(Rules.Expression.ReturnTypeNotAllowed, method.ReturnType.GetLocation(),
                method.ReturnType.ToString());
            context.ReportDiagnostic(diagnostic);
        }
        else
        {
            var fullTypeName = type.ToFullyQualifiedString();
            if (!AllowedExpressionReturnTypes.Contains(fullTypeName))
            {
                var diagnostic = Diagnostic.Create(Rules.Expression.ReturnTypeNotAllowed,
                    method.ReturnType.GetLocation(), fullTypeName);
                context.ReportDiagnostic(diagnostic);
            }
        }

        CheckParameters(context, method.ParameterList);
    }