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Use *unify-string-case-sensitive-p* consistently.
Annotate for file docs/html/string-template-class.html
2004-11-17 mantoniotti
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<html>
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<head>
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<title>CL Unification: Class STRING-TEMPLATE</title>
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<link rel="stylesheet" href="main.css">
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<body marginheight="0" marginwidth="0" leftmargin="0" topmargin="0" bgcolor="#ffffff">
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<div class="header"
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style="font-family:=Verdana,Arial,Helvetica; font-size: 18px; color: #41286f;">
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<strong><i>CL Unification: Class STRING-TEMPLATE</title></i></strong>
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<td height="100%"> </td>
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<div class="content">
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<div class="text" style="padding-top: 10px;">
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<h1><i>Class</i> <strong>STRING-TEMPLATE</strong></h1>
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<h2>Package:</h2>
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<p><code>COMMON-LISP.EXTENSIONS.DATA-AND-CONTROL-FLOW.UNIFICATION</code></p>
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<h2>Class Precedence List:</h2>
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<p>
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STRING-TEMPLATE, VECTOR-TEMPLATE, SEQUENCE-TEMPLATE, ARRAY-TEMPLATE, TYPE-TEMPLATE, TEMPLATE, STANDARD-OBJECT, T.
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</p>
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<h2>Known Subclasses:</h2>
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<p>
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None.
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</p>
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<h2>Slots:</h2>
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<p>None.</p>
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<h2>Description:</h2>
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<p>The STRING-TEMPLATE class denotes those object that are used
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to unify against a STRING.</p>
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<h3>Template Syntax:</h3>
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<p>
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<pre>
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#T(<b>string</b> . <i><destructuring template lambda list></i>)
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</pre>
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</p>
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<p>The STRING-TEMPLATE syntax denotes a STRING object. A
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STRING-TEMPLATE must be unified against a CHARACTER VECTOR
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object. The elements of the string must be unified against the
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<i><destructuring template lambda list></i></p>
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<p>The <i><destructuring template lambda list></i> has a
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slight different interpretation in this case, in order to provide
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more flexibility to the user. Ordinarily, each component appearing
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in a <i><destructuring template lambda list></i> is unified
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"element-wise" with the underlying SEQUENCE or ARRAY object. In the
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case of a STRING-TEMPLATE, each component of the
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<i><destructuring template lambda list></i> is allowed to be a
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STRING or a STRING-TEMPLATE itself. The STRING or STRING-TEMPLATE
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is unified against a subsequence of the CHARACTER VECTOR.</p>
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<h2>Examples:</h2>
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<p>
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<pre>
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cl-prompt> (setf e (unify "foobar" #T(<b>string</b> "foob" ?x #\r)))
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#<ENVIRONMENT xxx>
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cl-prompt> (find-variable-value '?x e)
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#\a
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cl-prompt> (setq e (unify "foobar" #T(<b>string</b> "FOO" #\b #\a #\r)))
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--> Error: UNIFICATION-FAILURE
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cl-prompt> (setq e (unify "foobar") #T(<b>string</b> _ _ ?x _ _ _))
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#<ENVIRONMENT xxx>
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cl-prompt> (find-variable-value '?x e)
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#\o
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cl-prompt> (setq e (unify "foobar" #T(<b>string</b> _ &rest ?x)))
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#<ENVIRONMENT xxx>
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cl-prompt> (find-variable-value '?x e)
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"oobar"
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</pre>
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</p>
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<h2>Affected By:</h2>
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2011-04-02 rbrown
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<p>The value of the variable *UNIFY-STRING-CASE-SENSITIVE-P*.</p>
2004-11-17 mantoniotti
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22:19:54 '
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<h2>Exceptional Situations:</h2>
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<p>Unifying an STRING-TEMPLATE against a non CHARACTER VECTOR object
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results in an UNIFICATION-FAILURE error being signaled.</p>
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<h2>See Also:</h2>
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<p>UNIFY</p>
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<h2>Notes:</h2>
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<h3>ARRAY Structural Properties</h3>
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<p>There is no way to "unify" against structural properties of
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vectors like fill pointers and displacements.</p>
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<h3>Current Implementation Note</h3>
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<p>The STRING-TEMPLATE class and the relevant UNIFY methods have not
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been implemented yet.</p>
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<p>The actual semantics of the STRING-TEMPLATE class is not
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completely clear yet.</p>
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</td>
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<!-- <td height="100%"> </td> -->
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</tr>
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<td height="100%"> </td>
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<td valign="top" width="80%" height="100%">
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<div class="content">
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<div class="text" style="padding-top: 10px;">
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<h1>News</h1>
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<p>News in chronological order, most recent on top.
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</p>
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<ul>
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<li><strong>2004-10-30</strong><br>
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Completed description.
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</li>
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</ul>
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</div>
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</div>
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</td>
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<td height="100%"> </td>
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</tr>
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<tr>
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<td colspan="3" valign="bottom" align="right">
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<div class="copyright">
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© 2003-2004, Marco Antoniotti, all rights reserved.
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</div>
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</tr>
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</table>
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</body>
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</html>
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<!-- end of file -- expression-template-class.html -->