37 lines
598 B
Plaintext
37 lines
598 B
Plaintext
|
|
||
|
|
:- protocol(objectp).
|
||
|
|
|
||
|
|
|
||
|
|
:- info([
|
||
|
|
version is 1.0,
|
||
|
|
authors is 'Paulo Moura',
|
||
|
|
date is 2000/7/24,
|
||
|
|
comment is 'Default protocol for all objects.']).
|
||
|
|
|
||
|
|
|
||
|
|
:- public(strict_instance/0).
|
||
|
|
|
||
|
|
:- mode(strict_instance, zero_or_one).
|
||
|
|
|
||
|
|
:- info(strict_instance/0, [
|
||
|
|
comment is 'True if the object is strictly an instance.']).
|
||
|
|
|
||
|
|
|
||
|
|
:- public(print/0).
|
||
|
|
|
||
|
|
:- mode(print, one).
|
||
|
|
|
||
|
|
:- info(print/0, [
|
||
|
|
comment is 'Pretty prints an object description.']).
|
||
|
|
|
||
|
|
|
||
|
|
:- public(nil/0).
|
||
|
|
|
||
|
|
:- mode(nil, zero_or_one).
|
||
|
|
|
||
|
|
:- info(nil/0, [
|
||
|
|
comment is 'True if the object represents a void reference.']).
|
||
|
|
|
||
|
|
|
||
|
|
:- end_protocol.
|