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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 example illustrates how to use the begin_of_file term generated when compiling a source file to create an object wrapper for the code in a plain Prolog file. Assuming that the context_switching_calls is set to allow, the generated object predicates can be called using the (<<)/2 debugging control construct for testing. This wrapper is useful for e.g. using the Logtalk compiler lint checks to examine predicate call dependencies of the wrapped code and also to look for possible portability issues when the portability flag is set to warning.