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variablereference.cpp
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1/*
2 * variablereference.cc - Copyright 2005 Frerich Raabe <raabe@kde.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25#include "variablereference.h"
26#include <dom_stringimpl.h>
27using namespace khtml;
28using namespace khtml::XPath;
29
30VariableReference::VariableReference( const DOM::DOMString &name )
31 : m_name( name )
32{
33}
34
35bool VariableReference::isConstant() const
36{
37 return false;
38}
39
40QString VariableReference::dump() const
41{
42 return QString() + "<variablereference name=\"" + m_name.string() + "\"/>";
43}
44
45Value VariableReference::doEvaluate() const
46{
47 QHash<DOM::DOMString, DOM::DOMString>& bindings = evaluationContext().variableBindings;
48 if ( !bindings.contains( m_name ) ) {
49 // XXX What to do if an unknown variable is referenced?
50 return Value( DOMString() );
51 }
52 return Value( bindings[ m_name ] );
53}
54
DOM::DOMString
This class implements the basic string we use in the DOM.
Definition: dom_string.h:44
DOM::DOMString::string
QString string() const
Definition: dom_string.cpp:236
QHash
khtml::XPath::Expression::evaluationContext
static EvaluationContext & evaluationContext()
Definition: expression.cpp:212
khtml::XPath::Value
Definition: expression.h:76
khtml::XPath::VariableReference::dump
virtual QString dump() const
Definition: variablereference.cpp:40
khtml::XPath::VariableReference::VariableReference
VariableReference(const DOM::DOMString &name)
Definition: variablereference.cpp:30
khtml::XPath::VariableReference::isConstant
virtual bool isConstant() const
Definition: variablereference.cpp:35
name
const char * name(StandardAction id)
khtml::XPath
Definition: expression.h:45
khtml
khtml::XPath::EvaluationContext::variableBindings
QHash< DOM::DOMString, DOM::DOMString > variableBindings
Definition: expression.h:62
variablereference.h
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