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yap-6.3/Logtalk/manuals/refman/directives/protected1.html
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<title>Logtalk predicate directive: protected/1</title>
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<h2><code>protected/1</code></h2>
<h4>Description</h4>
<blockquote>
<pre>protected(Functor/Arity)
protected(Functor1/Arity1, Functor2/Arity2, ...)
protected([Functor1/Arity1, Functor2/Arity2, ...])
protected(Functor//Arity)
protected(Functor1//Arity1, Functor2//Arity2, ...)
protected([Functor1//Arity1, Functor2//Arity2, ...])</pre>
<p>
Declares protected predicates and protected grammar rule non-terminals. 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 <a title="Consult reference manual" href="../methods/phrase2.html"><code>phrase/2</code></a> and <a title="Consult reference manual" href="../methods/phrase3.html"><code>phrase/3</code></a> messages sent from the object containing the directive or from an object that inherits the directive.
</p>
</blockquote>
<h4>Template and modes</h4>
<blockquote>
<pre>protected(+predicate_indicator_term)
protected(+non_terminal_indicator_term)</pre>
</blockquote>
<h4>Examples</h4>
<blockquote>
<pre>:- protected(init/1).
:- protected(print/2, convert/4).
:- protected([load/1, save/3]).</pre>
</blockquote>
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