Ada Programming/Attributes/'Type Class

Description

typ'Type_Class for any type or subtype yields the value of the type class for the full type of . If is a generic formal type, the value is the value for the corresponding actual subtype. The value of this attribute is of type System.Aux_DEC.Type_Class, which has the following definition:

type Type_Class is
  (Type_Class_Enumeration,
   Type_Class_Integer,
   Type_Class_Fixed_Point,
   Type_Class_Floating_Point,
   Type_Class_Array,
   Type_Class_Record,
   Type_Class_Access,
   Type_Class_Task,
   Type_Class_Address);

Protected types yield the value Type_Class_Task, which thus applies to all concurrent types. This attribute is designed to be compatible with the DEC Ada 83 attribute of the same name.