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      1 /*
      2  * Copyright 2005 Frerich Raabe <raabe (at) kde.org>
      3  * Copyright (C) 2006 Apple Computer, Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef XPathExpression_h
     28 #define XPathExpression_h
     29 
     30 #if ENABLE(XPATH)
     31 
     32 #include <wtf/Forward.h>
     33 #include <wtf/RefCounted.h>
     34 #include <wtf/PassRefPtr.h>
     35 
     36 namespace WebCore {
     37 
     38     typedef int ExceptionCode;
     39 
     40     class Node;
     41     class XPathNSResolver;
     42     class XPathResult;
     43 
     44     namespace XPath {
     45         class Expression;
     46     }
     47 
     48     class XPathExpression : public RefCounted<XPathExpression> {
     49     public:
     50         static PassRefPtr<XPathExpression> create() { return adoptRef(new XPathExpression); }
     51         ~XPathExpression();
     52 
     53         static PassRefPtr<XPathExpression> createExpression(const String& expression, XPathNSResolver*, ExceptionCode&);
     54         PassRefPtr<XPathResult> evaluate(Node* contextNode, unsigned short type, XPathResult*, ExceptionCode&);
     55 
     56     private:
     57         XPathExpression() { }
     58 
     59         XPath::Expression* m_topExpression;
     60     };
     61 
     62 }
     63 
     64 #endif // ENABLE(XPATH)
     65 
     66 #endif // XPathExpression_h
     67