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| 2 | :- protocol(hierarchyp). |
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| 3 | |
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| 4 | :- info([ |
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| 5 | version is 1.0, |
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| 6 | author is 'Paulo Moura', |
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| 7 | date is 2000/7/24, |
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| 8 | comment is 'Common hierarchy protocol for prototype and class hierarchies.']). |
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| 9 | |
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| 10 | :- public(ancestor/1). |
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| 11 | :- mode(ancestor(?object), zero_or_more). |
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| 12 | :- info(ancestor/1, [ |
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| 13 | comment is 'Returns, by backtracking, all object ancestors.', |
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| 14 | argnames is ['Ancestor']]). |
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| 15 | |
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| 16 | :- public(ancestors/1). |
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| 17 | :- mode(ancestors(-list), one). |
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| 18 | :- info(ancestors/1, [ |
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| 19 | comment is 'List of all object ancestors.', |
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| 20 | argnames is ['Ancestors']]). |
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| 21 | |
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| 22 | :- public(leaf/1). |
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| 23 | :- mode(leaf(?object), zero_or_more). |
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| 24 | :- info(leaf/1, [ |
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| 25 | comment is 'Returns, by backtracking, all object leaves.', |
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| 26 | argnames is ['Leaf']]). |
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| 27 | |
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| 28 | :- public(leaves/1). |
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| 29 | :- mode(leaves(-list), one). |
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| 30 | :- info(leaves/1, [ |
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| 31 | comment is 'List of all object leaves.', |
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| 32 | argnames is ['Leaves']]). |
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| 33 | |
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| 34 | :- public(descendant/1). |
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| 35 | :- mode(descendant(?object), zero_or_more). |
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| 36 | :- info(descendant/1, [ |
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| 37 | comment is 'Returns, by backtracking, all object descendants.', |
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| 38 | argnames is ['Descendant']]). |
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| 39 | |
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| 40 | :- public(descendants/1). |
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| 41 | :- mode(descendants(-list), one). |
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| 42 | :- info(descendants/1, [ |
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| 43 | comment is 'List of all object descendants.', |
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| 44 | argnames is ['Descendants']]). |
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| 45 | |
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| 46 | :- end_protocol. |
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