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![]() | Pack logtalk -- logtalk-3.81.0/manuals/_sources/refman/directives/protected_1.rst.txt |
.. 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: protected/1; Directive .. _directives_protected_1:
::
protected(Name/Arity)
protected((Name/Arity, ...))
protected([Name/Arity, ...])
protected(Name//Arity)
protected((Name//Arity, ...))
protected([Name//Arity, ...])
protected(op(Precedence,Associativity,Operator))
protected((op(Precedence,Associativity,Operator), ...))
protected([op(Precedence,Associativity,Operator), ...])
Declares :term:`protected <protected predicate>` predicates, protected
grammar rule non-terminals, and protected operators. A protected predicate
can only be called from the object containing the directive or from an
object that inherits the directive. A protected non-terminal can only be
used as an argument in a :ref:methods_phrase_2
and :ref:methods_phrase_3
calls from the object containing the directive or from an object that
inherits the directive.
.. note::
Protected operators are not inherited but declaring them provides a reusable specification for using them in descendant objects (or categories).
::
protected(+predicate_indicator_term)
protected(+non_terminal_indicator_term)
protected(+operator_declaration)
::
:- protected(init/1)
.
:- protected((print/2, convert/4))
.
:- protected([load/1, save/3])
.
.. seealso::
:ref:directives_private_1
,
:ref:directives_public_1
,
:ref:methods_predicate_property_2