Extends_Relation

class Extends_Relation (abstract, logical)

Inheritance relations between classes and interfaces.

Direct parents:

• inherits Declarative_Node

Ancestor classes and implemented interfaces:

Declarative_Node, Logical_IR_Root

Direct child classes:

• subclass Direct_Extends_Relation

• subclass Indirect_Extends_Relation

Field	Kind	Type	Description
Extends	semantic	class Type	The type which is extended by the type referencing an object of this class. The base class may be a class or a struct definition, a template parameter or nonreal composite, or a managed reference type (which is unnamed).
Offset	attribute	builtin Natural	start offset for the subobject of type Base within the derived class
Offset_In_Bits	attribute	builtin UInt64	offset to the field in bits.
Optimized_Empty_Base	attribute	builtin Boolean	True for empty base classes being optimized to use a shared offset with others
Ambiguous	attribute	builtin Boolean	True if a direct cast from derived_class to this base class would be ambiguous, because the base class appears multiple times in the inheritance hierarchy.
Nested_Extends	syntactic	list of class Indirect_Extends_Relation	Indirect base classes (direct base classes of this base class) excluding virtual bases which have been seen already from a different derivation path in the pre-order traversal of the inheritance DAG for the most-derived type, or which also appear as direct base class
Physical (from Logical_IR_Root)	semantic to physical	class Extends_Relation_Definition
Parent (from Logical_IR_Root)	semantic	class Logical_IR_Root