.. index:: hierarchyp
.. _hierarchyp/0:

**protocol**

``hierarchyp``
==============

Common hierarchy protocol for prototype and class hierarchies.

| **Author:** Paulo Moura
| **Version:** 1.0
| **Date:** 2000/7/24

| **Compilation flags:**
|    ``static``


(no dependencies on other entities)


Public interface
----------------

.. raw:: html

   <div id="ancestor/1"> </div>

.. index:: ancestor/1
.. _hierarchyp/0::ancestor/1:

``ancestor/1``
^^^^^^^^^^^^^^

Returns, by backtracking, all object ancestors.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``ancestor(Ancestor)``
| **Mode and number of proofs:**
|    ``ancestor(?object)`` - ``zero_or_more``


.. raw:: html

   <div id="ancestors/1"> </div>

.. index:: ancestors/1
.. _hierarchyp/0::ancestors/1:

``ancestors/1``
^^^^^^^^^^^^^^^

List of all object ancestors.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``ancestors(Ancestors)``
| **Mode and number of proofs:**
|    ``ancestors(-list)`` - ``one``


.. raw:: html

   <div id="leaf/1"> </div>

.. index:: leaf/1
.. _hierarchyp/0::leaf/1:

``leaf/1``
^^^^^^^^^^

Returns, by backtracking, all object leaves.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``leaf(Leaf)``
| **Mode and number of proofs:**
|    ``leaf(?object)`` - ``zero_or_more``


.. raw:: html

   <div id="leaves/1"> </div>

.. index:: leaves/1
.. _hierarchyp/0::leaves/1:

``leaves/1``
^^^^^^^^^^^^

List of all object leaves.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``leaves(Leaves)``
| **Mode and number of proofs:**
|    ``leaves(-list)`` - ``one``


.. raw:: html

   <div id="descendant/1"> </div>

.. index:: descendant/1
.. _hierarchyp/0::descendant/1:

``descendant/1``
^^^^^^^^^^^^^^^^

Returns, by backtracking, all object descendants.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``descendant(Descendant)``
| **Mode and number of proofs:**
|    ``descendant(?object)`` - ``zero_or_more``


.. raw:: html

   <div id="descendants/1"> </div>

.. index:: descendants/1
.. _hierarchyp/0::descendants/1:

``descendants/1``
^^^^^^^^^^^^^^^^^

List of all object descendants.

| **Compilation flags:**
|    ``static``

| **Template:**
|    ``descendants(Descendants)``
| **Mode and number of proofs:**
|    ``descendants(-list)`` - ``one``


Protected interface
-------------------

(none)

Private predicates
------------------

(none)

Operators
---------

(none)

Remarks
-------

(none)

