private static void AnalyzeColumns()

in RuleSamples/InMemoryTableBin2CollationRule.cs [106:131]
22 lines of code
3 McCabe index (conditional complexity)

        private static void AnalyzeColumns(
            SqlRuleExecutionContext context,
            TSqlObject index, 
            string defaultCollation,
            IList<SqlRuleProblem> problems)
        {
            foreach (TSqlObject column in index.GetReferenced(Index.Columns)
                                               .Where(column => IsCharacterColumn(column)))
            {
                // Fall back on the default project collation if none is defined for the specific column
                 string collation = column.GetProperty<string>(Column.Collation) ?? defaultCollation ?? string.Empty;
                if (!collation.EndsWith(Bin2Ending, StringComparison.OrdinalIgnoreCase))
                {
                    // Error looks liks "Index <name> on column <name> should have a BIN2 collation instead of <collation>"
                    // Choosing to add 1 problem per-column. This will cause more warnings in the error manager but is more precise
                    string errorMsg = string.Format(CultureInfo.CurrentCulture,
                        context.RuleDescriptor.DisplayDescription,
                        RuleUtils.GetElementName(index, context, ElementNameStyle.EscapedFullyQualifiedName),
                        RuleUtils.GetElementName(column, context, ElementNameStyle.EscapedFullyQualifiedName),
                        collation);

                    SqlRuleProblem problem = new SqlRuleProblem(errorMsg, index);
                    problems.Add(problem);
                }
            }
        }