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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 "qboolean_p.h"
#include "qdelegatingnamespaceresolver_p.h"
#include "qinteger_p.h"
#include "qqnameconstructor_p.h"
#include "qfunctionavailablefn_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
Item FunctionAvailableFN::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const QString lexQName(m_operands.first()->evaluateSingleton(context).stringValue());
NamespaceResolver::Bindings override;
override.insert(StandardPrefixes::empty, m_defFuncNS);
const NamespaceResolver::Ptr resolver(new DelegatingNamespaceResolver(staticNamespaces(), override));
const QXmlName name
(QNameConstructor::expandQName<DynamicContext::Ptr,
ReportContext::XTDE1400,
ReportContext::XTDE1400>(lexQName,
context,
resolver,
this));
xsInteger arity;
if(m_operands.count() == 2)
arity = m_operands.at(1)->evaluateSingleton(context).as<Numeric>()->toInteger();
else
arity = FunctionSignature::UnlimitedArity;
return Boolean::fromValue(m_functionFactory->isAvailable(context->namePool(), name, arity));
}
Expression::Ptr FunctionAvailableFN::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
m_functionFactory = context->functionSignatures();
Q_ASSERT(m_functionFactory);
m_defFuncNS = context->namePool()->allocateNamespace(context->defaultFunctionNamespace());
/* m_defFuncNS can be empty/null or an actual value. */
return StaticNamespacesContainer::typeCheck(context, reqType);
}
QT_END_NAMESPACE
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