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91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/*
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* parsedstatement.cc - Copyright 2005 Frerich Raabe <raabe@kde.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "parsedstatement.h"
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#include "path.h"
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#include "xml/dom_nodeimpl.h"
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#include "xml/dom_nodelistimpl.h"
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#include "xml/dom3_xpathimpl.h"
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using namespace DOM;
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namespace khtml {
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namespace XPath {
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Expression *khtmlParseXPathStatement( const DOMString &statement, int& ec );
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ParsedStatement::ParsedStatement( const DOMString &statement, khtml::XPathNSResolverImpl* res )
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: m_res( res ), m_expr( 0 ), m_ec( 0 )
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{
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parse( statement );
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}
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ParsedStatement::~ParsedStatement()
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{
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delete m_expr;
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}
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void ParsedStatement::parse( const DOMString &statement )
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{
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kDebug(6011) << "parsing:" << statement.string();
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m_ec = 0;
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delete m_expr;
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Expression::evaluationContext().reset( 0, m_res.get() );
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m_expr = khtmlParseXPathStatement( statement, m_ec );
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kDebug(6011) << "AST:" << (m_expr ? m_expr->dump() : QString::fromLatin1("*** parse error ***"));
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}
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void ParsedStatement::optimize()
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{
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if ( !m_expr ) {
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return;
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}
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m_expr->optimize();
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}
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Value ParsedStatement::evaluate(NodeImpl* context, int& ec) const
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{
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Expression::evaluationContext().reset(context, m_res.get());
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Value res = m_expr->evaluate();
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ec = Expression::evaluationContext().exceptionCode;
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// If the result is a nodeset, we need to put it in document order
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// and remove duplicates.
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if ( res.isNodeset() )
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res.toNodeset()->normalizeUpto(StaticNodeListImpl::DocumentOrder);
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return res;
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}
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QString ParsedStatement::dump() const
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{
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return m_expr->dump();
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}
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} // namespace XPath
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} // namespace khtml
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// kate: indent-width 4; replace-tabs off; tab-width 4; space-indent off;
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