<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="content-type" content="application/xml+xhtml; charset=utf-8" /> <title>Logtalk predicate directive: protected/1</title> <link rel="stylesheet" href="../../screen.css" type="text/css" media="screen"/> <link rel="stylesheet" href="../../print.css" type="text/css" media="print"/> </head> <body> <div class="top-left">Logtalk reference manual</div> <div class="top-right">Predicate directive: protected/1</div> <div class="bottom-left"><span class="page"/></div> <div class="bottom-right"><span class="page"/></div> <div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#directives">directives</a></div> <h2 class="code">protected/1</h2> <h4>Description</h4> <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> <h4>Template and modes</h4> <pre>protected(+predicate_indicator_term) protected(+non_terminal_indicator_term)</pre> <h4>Examples</h4> <pre>:- protected(init/1). :- protected(print/2, convert/4). :- protected([load/1, save/3]).</pre> <div class="footer"> <div class="navbottom"><a href="private1.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="public1.html">next</a></div> <div class="copyright">Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://www.logtalk.org">Logtalk.org</a></div> <div class="footnote"> <span class="validators"><a href="http://validator.w3.org/check/referer">XHTML</a> + <a href="http://jigsaw.w3.org/css-validator/check/referer">CSS</a></span> <span class="date">Last updated on: November 16, 2005</span> </div> </div> </body> </html>