75b2645e3f
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1580 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
36 lines
894 B
Plaintext
36 lines
894 B
Plaintext
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:- protocol(proto_hierarchyp,
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extends(hierarchyp)).
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:- info([
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version is 1.1,
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author is 'Paulo Moura',
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date is 2006/2/20,
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comment is 'Prototype hierarchy protocol.']).
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:- public(parent/1).
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:- mode(parent(?object), zero_or_more).
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:- info(parent/1, [
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comment is 'Returns, by backtracking, all object parents.',
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argnames is ['Parent']]).
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:- public(parents/1).
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:- mode(parents(-list), one).
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:- info(parents/1, [
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comment is 'List of all object parents.',
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argnames is ['Parents']]).
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:- public(extension/1).
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:- mode(extension(?object), zero_or_more).
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:- info(extension/1, [
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comment is 'Returns, by backtracking, all object direct descendants.',
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argnames is ['Extension']]).
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:- public(extensions/1).
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:- mode(extensions(-list), one).
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:- info(extensions/1, [
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comment is 'List of all object direct descendants.',
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argnames is ['Extensions']]).
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:- end_protocol.
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