This language feature is only available fromAda 2005 on.
Used to declare aninterface. Interfaces are the most important innovation in Ada 2005. The basic semantic has been taken from the interface concept of theJava programming language. Interface inheritance is a reduced form ofmultiple inheritance.
There are various forms of interfaces available:
The normal interface is declared as:
typePrintableisinterface;
Can be used as interface to limited tagged type.
typePrintableislimitedinterface;
typePrintableissynchronizedinterface;
All synchronized interfaces are also limited.
Can be used as an interface to a task type.
typePrintableistaskinterface;
All task interfaces are also synchronized.
Can be used as an interface to a protected type.
typePrintableisprotectedinterface;
All protected interfaces are also synchronized.
| Ada Keywords | ||||
|---|---|---|---|---|
abort | else | new | return | |
abs | elsif | not | reverse | |
abstract (Ada 95) | end | null | ||
accept | entry | select | ||
access | exception | of | separate | |
aliased (Ada 95) | exit | or | some (Ada 2012) | |
all | others | subtype | ||
and | for | out | synchronized (Ada 2005) | |
array | function | overriding (Ada 2005) | ||
at | tagged (Ada 95) | |||
generic | package | task | ||
begin | goto | parallel (Ada 2022) | terminate | |
body | pragma | then | ||
if | private | type | ||
case | in | procedure | ||
constant | interface (Ada 2005) | protected (Ada 95) | until (Ada 95) | |
is | use | |||
declare | raise | |||
delay | limited | range | when | |
delta | loop | record | while | |
digits | rem | with | ||
do | mod | renames | ||
requeue (Ada 95) | xor | |||