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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qabstractfloat_p.h"
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#include "qanyuri_p.h"
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#include "qboolean_p.h"
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#include "qbuiltintypes_p.h"
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#include "qcommonnamespaces_p.h"
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#include "qcommonvalues_p.h"
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#include "qliteral_p.h"
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#include "qatomicstring_p.h"
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#include "qnodefns_p.h"
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QT_BEGIN_NAMESPACE
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using namespace QPatternist;
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Item NameFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item node(m_operands.first()->evaluateSingleton(context));
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if(node)
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{
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const QXmlName name(node.asNode().name());
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if(name.isNull())
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return CommonValues::EmptyString;
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else
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return AtomicString::fromValue(context->namePool()->toLexical(name));
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}
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else
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return CommonValues::EmptyString;
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}
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Item LocalNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item node(m_operands.first()->evaluateSingleton(context));
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if(node)
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{
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const QXmlName name(node.asNode().name());
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if(name.isNull())
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return CommonValues::EmptyString;
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else
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return AtomicString::fromValue(context->namePool()->stringForLocalName(name.localName()));
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}
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else
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return CommonValues::EmptyString;
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}
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Item NamespaceURIFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item node(m_operands.first()->evaluateSingleton(context));
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if(node)
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{
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const QXmlName name(node.asNode().name());
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if(name.isNull())
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return CommonValues::EmptyAnyURI;
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else
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return toItem(AnyURI::fromValue(context->namePool()->stringForNamespace(name.namespaceURI())));
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}
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else
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return CommonValues::EmptyAnyURI;
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}
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Item NumberFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item item(m_operands.first()->evaluateSingleton(context));
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if(!item)
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return CommonValues::DoubleNaN;
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const Item val(cast(item, context));
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Q_ASSERT(val);
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if(val.as<AtomicValue>()->hasError())
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return CommonValues::DoubleNaN;
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else
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return val;
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}
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Expression::Ptr NumberFN::typeCheck(const StaticContext::Ptr &context,
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const SequenceType::Ptr &reqType)
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{
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const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
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const ItemType::Ptr sourceType(m_operands.first()->staticType()->itemType());
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if(BuiltinTypes::xsDouble->xdtTypeMatches(sourceType))
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{
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/* The operand is already xs:double, no need for fn:number(). */
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return m_operands.first()->typeCheck(context, reqType);
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}
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else if(prepareCasting(context, sourceType))
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return me;
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else
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{
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/* Casting to xs:double will never succeed and we would always return NaN.*/
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return wrapLiteral(CommonValues::DoubleNaN, context, this)->typeCheck(context, reqType);
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}
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}
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bool LangFN::isLangMatch(const QString &candidate, const QString &toMatch)
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{
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if(QString::compare(candidate, toMatch, Qt::CaseInsensitive) == 0)
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return true;
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return candidate.startsWith(toMatch, Qt::CaseInsensitive)
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&& candidate.length() > toMatch.length()
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&& candidate.at(toMatch.length()) == QLatin1Char('-');
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}
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Item LangFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item langArg(m_operands.first()->evaluateSingleton(context));
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const QString lang(langArg ? langArg.stringValue() : QString());
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const QXmlName xmlLang(StandardNamespaces::xml, StandardLocalNames::lang, StandardPrefixes::xml);
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const QXmlNodeModelIndex langNode(m_operands.at(1)->evaluateSingleton(context).asNode());
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const QXmlNodeModelIndex::Iterator::Ptr ancestors(langNode.iterate(QXmlNodeModelIndex::AxisAncestorOrSelf));
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QXmlNodeModelIndex ancestor(ancestors->next());
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while(!ancestor.isNull())
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{
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const QXmlNodeModelIndex::Iterator::Ptr attributes(ancestor.iterate(QXmlNodeModelIndex::AxisAttribute));
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QXmlNodeModelIndex attribute(attributes->next());
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while(!attribute.isNull())
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{
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Q_ASSERT(attribute.kind() == QXmlNodeModelIndex::Attribute);
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if(attribute.name() == xmlLang)
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{
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if(isLangMatch(attribute.stringValue(), lang))
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return CommonValues::BooleanTrue;
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else
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return CommonValues::BooleanFalse;
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}
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attribute = attributes->next();
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}
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ancestor = ancestors->next();
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}
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return CommonValues::BooleanFalse;
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}
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Item RootFN::evaluateSingleton(const DynamicContext::Ptr &context) const
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{
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const Item arg(m_operands.first()->evaluateSingleton(context));
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if(arg)
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return arg.asNode().root();
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else
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return Item();
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}
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SequenceType::Ptr RootFN::staticType() const
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{
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if(m_operands.isEmpty())
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return makeGenericSequenceType(BuiltinTypes::node, Cardinality::exactlyOne());
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else
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return makeGenericSequenceType(BuiltinTypes::node, m_operands.first()->staticType()->cardinality().toWithoutMany());
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}
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QT_END_NAMESPACE
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