---

This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2023 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

To load this example and for sample queries, please see the SCRIPT.txt file.

This folder contains examples of public, protected, and private inheritance, for both prototype-based and class-based hierarchies.

This example defines a category named predicates which specifies three predicates, one public, one protected, and one private. This category is imported by the root objects: parent for the prototype hierarchy and root for the class hierarchy. Each root object have a set of three descendants, each one using one of the inheritance types.

The two object hierarchies are organized as follows:

parent
        prototype1				% public inheritance
                descendant1
        prototype2				% protected inheritance
                descendant2
        prototype3				% private inheritance
                descendant3

root
        subclass1				% public inheritance
                instance1
        subclass2				% protected inheritance
                instance2
        subclass3				% private inheritance
                instance3

A second category named interface, imported by all objects except the sub-class instances, allows us to query the objects about their interfaces.