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76 lines
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76 lines
3.0 KiB
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<title>Logtalk built-in method: phrase/3</title>
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<div class="top-left">Logtalk reference manual</div>
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<div class="top-right">Built-in method: phrase/3</div>
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<div class="bottom-left"><span class="page"/></div>
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<div class="bottom-right"><span class="page"/></div>
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<div class="navtop"><a href="../../index.html">contents</a> > <a href="../index.html">reference manual</a> > <a href="../index.html#methods">built-in methods</a></div>
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<h2 class="codenp">phrase/3<span id="methods_phrase3"/></h2>
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<h4>Description</h4>
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<pre>phrase(NonTerminal, Input, Rest)</pre>
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<p>
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True if the list <code>Input</code> can be parsed using the specified non-terminal <code>NonTerminal</code>. The list <code>Rest</code> is what remains of the list <code>Input</code> after parsing succeeded. This method also accepts grammar rule bodies in the first argument (with the limitation that cuts are only supported in local calls).
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</p>
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<h4>Template and modes</h4>
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<pre>phrase(+callable, ?list, ?list)</pre>
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<h4>Errors</h4>
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<dl>
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<dt>NonTerminal is a variable:</dt>
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<dd><code>instantiation_error</code></dd>
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<dt>NonTerminal is neither a variable nor a callable term:</dt>
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<dd><code>type_error(callable, NonTerminal)</code></dd>
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<dt>Input is neither a partial list nor a list:</dt>
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<dd><code>type_error(list, Input)</code></dd>
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<dt>Rest is neither a partial list nor a list:</dt>
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<dd><code>type_error(list, Rest)</code></dd>
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<dt>The grammar rule non-terminal NonTerminal is private:</dt>
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<dd><code>permission_error(access, private_non_terminal, NonTerminal)</code></dd>
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<dt>The grammar rule non-terminal NonTerminal is protected:</dt>
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<dd><code>permission_error(access, protected_non_terminal, NonTerminal)</code></dd>
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<dt>The grammar rule non-terminal NonTerminal is not declared:</dt>
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<dd><code>existence_error(non_terminal_declaration, NonTerminal)</code></dd>
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</dl>
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<h4>Examples</h4>
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<pre>| ?- sentence::phrase(noun_phrase, [the, girl, likes, the, boy], Rest).
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Rest = [likes, the, boy]
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yes</pre>
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<div class="footer">
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<div class="copyright">
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<span>Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://logtalk.org">Logtalk.org</a></span><br/>
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<span>Last updated on: October 26, 2006</span>
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<span><a href="phrase2.html">previous</a> | <a href="../../glossary.html">glossary</a> | <a href="../index.html#methods">next</a></span><br/>
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