protected virtual string Generate()

in EntityFramework/src/MySqlMigrationSqlGenerator.cs [659:723]
60 lines of code
29 McCabe index (conditional complexity)

    protected virtual string Generate(ColumnModel op)
    {
      TypeUsage typeUsage = _providerManifest.GetStoreType(op.TypeUsage);
      StringBuilder sb = new StringBuilder();
      string type = op.StoreType;
      if (type == null)
      {
        type = MySqlProviderServices.Instance.GetColumnType(typeUsage);
      }

      sb.Append(type);

      if (!type.EndsWith(")", StringComparison.InvariantCulture))
      {
        if ((op.ClrType == typeof(string)) ||
           ((op.ClrType == typeof(byte) || op.ClrType == typeof(byte[])) && op.ClrType.IsArray))
        {
          if (op.MaxLength.HasValue)
          {
            sb.AppendFormat("({0}) ", op.MaxLength.Value);
          }
        }
        if (op.Precision.HasValue && op.Scale.HasValue)
        {
          sb.AppendFormat("( {0}, {1} ) ", op.Precision.Value, op.Scale.Value);
        }
        else
        {
          if (type == "datetime" || type == "timestamp" || type == "time")
          {
            if (op.Precision.HasValue && op.Precision.Value >= 1)
            {
              sb.AppendFormat("({0}) ", op.Precision.Value <= 6 ? op.Precision.Value : 6);
            }
            if (op.IsIdentity && (String.Compare(type, "datetime", true) == 0 || String.Compare(type, "timestamp", true) == 0))
            {
              sb.AppendFormat(" DEFAULT CURRENT_TIMESTAMP{0}", op.Precision.HasValue && op.Precision.Value >= 1 ? "( " + op.Precision.Value.ToString() + " )" : "");
            }
          }
        }
      }

      op.StoreType = type;

      if (!(op.IsNullable ?? true))
      {
        sb.Append(string.Format("{0} not null ",
          ((!primaryKeyCols.Contains(op.Name) && op.IsIdentity && op.Type != PrimitiveTypeKind.Guid) ? " unsigned" :
          ((op.Type == PrimitiveTypeKind.Guid) ? " default '' " : ""))));
      }
      if (op.IsIdentity && (new string[] { "tinyint", "smallint", "mediumint", "int", "bigint" }).Contains(type.ToLower()))
      {
        sb.Append(" auto_increment ");
        autoIncrementCols.Add(op.Name);
      }
      else
      {
        // nothing
      }
      if (!string.IsNullOrEmpty(op.DefaultValueSql))
      {
        sb.Append(string.Format(" default {0}", op.DefaultValueSql));
      }
      return sb.ToString();
    }