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