.. This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2024 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.

.. rst-class:: align-right

directive

.. index:: pair: public/1; Directive .. _directives_public_1:

public/1

Description

::

public(Name/Arity) public((Name/Arity, ...)) public([Name/Arity, ...])

public(Name//Arity) public((Name//Arity, ...)) public([Name//Arity, ...])

public(op(Precedence,Associativity,Operator)) public((op(Precedence,Associativity,Operator), ...)) public([op(Precedence,Associativity,Operator), ...])

Declares :term:`public <public predicate>` predicates, public grammar rule non-terminals, and public operators. A public predicate can be called from any object. A public non-terminal can be used as an argument in :ref:methods_phrase_2 and :ref:methods_phrase_3 calls from any object.

.. note::

Declaring a public operator does not make it global when the entity holding the scope directive is compiled and loaded. But declaring public operators provides a reusable specification for using them in the entity clients (e.g. in :ref:directives_uses_2 directives).

Template and modes

::

public(+predicate_indicator_term) public(+non_terminal_indicator_term) public(+operator_declaration)

Examples

::

:- public(ancestor/1).

:- public((instance/1, instances/1)).

:- public([leaf/1, leaves/1]).

.. seealso::

:ref:directives_private_1, :ref:directives_protected_1, :ref:methods_predicate_property_2