A.18.12 The Generic Package Containers.Indefinite_Doubly_Linked_Lists

1/2

The language-defined generic package Containers.Indefinite_Doubly_Linked_Lists provides private types List and Cursor, and a set of operations for each type. It provides the same operations as the package Containers.Doubly_Linked_Lists (see A.18.3), with the difference that the generic formal Element_Type is indefinite.

Static Semantics

2/3

The declaration of the generic library package Containers.Indefinite_Doubly_Linked_Lists has the same contents and semantics as Containers.Doubly_Linked_Lists except:

3/2

The generic formal Element_Type is indefinite.

4/2

The procedure with the profile:

5/2

procedure Insert (Container : in out List;
                  Before    : in     Cursor;
                  Position  :    out Cursor;
                  Count     : in     Count_Type := 1);

6/2

is omitted.

7/2

The actual Element parameter of access subprogram Process of Update_Element may be constrained even if Element_Type is unconstrained.

8/4

The operations Append, Insert, Prepend, and Replace_Element that have a formal parameter of type Element_Type perform indefinite insertion (see A.18).

9/5

The description of Tampering_With_Elements_Prohibited is replaced by:

10/5

Returns True if tampering with elements is prohibited for Container, and False otherwise.

11/5

Tampering_With_Cursors_Prohibited is replaced by Tampering_With_Elements_Prohibited in the postcondition for the operations Reference and Constant_Reference.

12/5

The operations Replace_Element and Swap are omitted from the nested package Stable.

Ada 2005 and 2012 Editions sponsored in part by Ada-Europe