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0001 /*
0002  * parsedstatement.h - Copyright 2005 Frerich Raabe <raabe@kde.org>
0003  *
0004  * Redistribution and use in source and binary forms, with or without
0005  * modification, are permitted provided that the following conditions
0006  * are met:
0007  *
0008  * 1. Redistributions of source code must retain the above copyright
0009  *    notice, this list of conditions and the following disclaimer.
0010  * 2. Redistributions in binary form must reproduce the above copyright
0011  *    notice, this list of conditions and the following disclaimer in the
0012  *    documentation and/or other materials provided with the distribution.
0013  *
0014  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
0015  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0016  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
0017  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
0018  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
0019  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
0020  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
0021  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
0023  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0024  */
0025 #ifndef PARSEDSTATEMENT_H
0026 #define PARSEDSTATEMENT_H
0027 
0028 #include "util.h"
0029 
0030 namespace DOM
0031 {
0032 class NodeImpl;
0033 class DOMString;
0034 }
0035 
0036 namespace khtml
0037 {
0038 
0039 class XPathNSResolverImpl;
0040 
0041 namespace XPath
0042 {
0043 
0044 class Expression;
0045 class Value;
0046 
0047 class ParsedStatement
0048 {
0049 public:
0050     ParsedStatement(const DOM::DOMString &statement, khtml::XPathNSResolverImpl *res);
0051     ~ParsedStatement();
0052     void optimize();
0053 
0054     QString dump() const;
0055 
0056     Value evaluate(DOM::NodeImpl *context,
0057                    int &ec) const;
0058 
0059     // Any exception issued during parsing, or 0
0060     int exceptionCode()
0061     {
0062         return m_ec;
0063     }
0064 
0065 private:
0066     void parse(const DOM::DOMString &statement);
0067 
0068     SharedPtr<khtml::XPathNSResolverImpl> m_res;
0069     Expression *m_expr;
0070     int m_ec;
0071 };
0072 
0073 } // namespace XPath
0074 
0075 } // namespace khtml
0076 
0077 #endif // PARSEDSTATEMENT_H
0078