private static void BinaryExpressionCheck()

in ClrHeapAllocationsAnalyzer/TypeConversionAllocationAnalyzer.cs [150:177]
23 lines of code
7 McCabe index (conditional complexity)

        private static void BinaryExpressionCheck(SyntaxNode node, SemanticModel semanticModel, bool isAssignmentToReadonly, Action<Diagnostic> reportDiagnostic, string filePath, CancellationToken cancellationToken)
        {
            var binaryExpression = node as BinaryExpressionSyntax;

            // as expression
            if (binaryExpression.IsKind(SyntaxKind.AsExpression) && binaryExpression.Left != null && binaryExpression.Right != null)
            {
                var leftT = semanticModel.GetTypeInfo(binaryExpression.Left, cancellationToken);
                var rightT = semanticModel.GetTypeInfo(binaryExpression.Right, cancellationToken);

                if (leftT.Type?.IsValueType == true && rightT.Type?.IsReferenceType == true)
                {
                    reportDiagnostic(Diagnostic.Create(ValueTypeToReferenceTypeConversionRule, binaryExpression.Left.GetLocation(), EmptyMessageArgs));
                    HeapAllocationAnalyzerEventSource.Logger.BoxingAllocation(filePath);
                }

                return;
            }

            if (binaryExpression.Right != null)
            {
                var assignmentExprTypeInfo = semanticModel.GetTypeInfo(binaryExpression.Right, cancellationToken);
                var assignmentExprConversionInfo = semanticModel.GetConversion(binaryExpression.Right, cancellationToken);
                CheckTypeConversion(assignmentExprConversionInfo, reportDiagnostic, binaryExpression.Right.GetLocation(), filePath);
                CheckDelegateCreation(binaryExpression.Right, assignmentExprTypeInfo, semanticModel, isAssignmentToReadonly, reportDiagnostic, binaryExpression.Right.GetLocation(), filePath, cancellationToken);
                return;
            }
        }