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{*AI05-0001-1*}
The language-defined generic package Containers.Bounded_Vectors
provides a private type Vector and a set of operations. It provides the
same operations as the package Containers.Vectors (see A.18.2),
with the difference that the maximum storage is bounded.

{*AI05-0001-1*}
The declaration of the generic library package Containers.Bounded_Vectors
has the same contents and semantics as Containers.Vectors except:

The type Vector is
declared with a discriminant that specifies the capacity:

The type Vector needs finalization if and only
if type Element_Type needs finalization.

{*AI12-0112-1*}
Capacity is omitted from the Stable_Properties
of type Vector.

{*AI12-0339-1*}
In function Empty, the postcondition is altered
to:

Post =>

Empty'Result.Capacity = Capacity**and then**

**not** Tampering_With_Elements_Prohibited (Empty'Result) **and then**

**not** Tampering_With_Cursors_Prohibited (Empty'Result) **and then**

Length (Empty'Result) = 0;

Empty'Result.Capacity = Capacity

Length (Empty'Result) = 0;

{*AI12-0112-1*}
In function Copy, the
postcondition is altered to: if the Capacity
parameter is equal to or greater than the length of Source, the vector
capacity exactly equals the value of the Capacity parameter.

Post => Length (Copy'Result) = Length (Source) **and then**

(**if** Capacity > Length (Source) **then**

Copy'Result.Capacity = Capacity

**else** Copy'Result.Capacity >= Length (Source));

(

Copy'Result.Capacity = Capacity

The description of
Reserve_Capacity is replaced with:

{*AI12-0112-1*}
**procedure** Reserve_Capacity (Container : **in out** Vector;

Capacity :**in** Count_Type)

**with** Pre => Capacity <= Container.Capacity **or else raise** Capacity_Error;

Capacity :

{*AI12-0112-1*}
This If the specified
Capacity is larger than the capacity of Container, then Reserve_Capacity
propagates Capacity_Error. Otherwise, the operation has no effect,
[other than checking the precondition].

{*AI12-0112-1*}
The portion of the postcondition checking the capacity
is omitted from subprograms Set_Length, Assign, Insert, Insert_Space,
Prepend, Append, and Delete.

{*AI12-0112-1*}
For procedures Insert, Insert_Space, Prepend, and
Append, the part of the precondition reading:

(<*some length*> <= Maximum_Length - <*some other length*>

**or else raise** Constraint_Error)

is
replaced by:

(<*some length*> <= Maximum_Length - <*some other length*>

**or else raise** Constraint_Error) **and then**

(<*some length*> <= Container.Capacity - <*some other length*>

**or else raise** Capacity_Error)

(<

{*AI05-0160-1*}
{*AI05-0265-1*}
It is a bounded error to assign from a bounded vector
object while tampering with elements [or cursors] of that object is prohibited.
Either Program_Error is raised by the assignment, execution proceeds
with the target object prohibiting tampering with elements [or cursors],
or execution proceeds normally.

{*AI05-0265-1*}
When a bounded vector object *V* is finalized, if tampering with
cursors is prohibited for *V* other than due to an assignment from
another vector, then execution is erroneous.

{*AI05-0184-1*}
{*AI05-0264-1*}
For each instance of Containers.Vectors and each instance of Containers.Bounded_Vectors,
if the two instances meet the following conditions, then the output generated
by the Vector'Output or Vector'Write subprograms of either instance shall
be readable by the Vector'Input or Vector'Read of the other instance,
respectively:

{*AI05-0184-1*}
{*AI05-0248-1*}
the Element_Type parameters of the two instances are statically matching
subtypes of the same type; and

{*AI05-0184-1*}
the output generated by Element_Type'Output or Element_Type'Write is
readable by Element_Type'Input or Element_Type'Read, respectively (where
Element_Type denotes the type of the two actual Element_Type parameters);
and

{*AI05-0184-1*}
the preceding two conditions also hold for the Index_Type parameters
of the instances.

{*AI05-0001-1*}
Bounded vector objects should be implemented without implicit pointers
or dynamic allocation.

{*AI05-0001-1*}
The implementation advice for procedure Move to minimize copying does
not apply.

{*AI12-0111-1*}
**Corrigendum:** Tampering
with elements is now defined to be equivalent to tampering with cursors
for bounded containers. If a program requires tampering detection to
work, it might fail in Ada 202x. Needless to say, this shouldn't happen
outside of test programs. See Inconsistencies With Ada 2012 in A.18.2
for more details.

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