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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 "qcommonsequencetypes_p.h"
#include "qpatternistlocale_p.h"
#include "qnodebuilder_p.h"
#include "qqnamevalue_p.h"
#include "qprocessinginstructionconstructor_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
ProcessingInstructionConstructor::
ProcessingInstructionConstructor(const Expression::Ptr &op1,
const Expression::Ptr &op2) : PairContainer(op1, op2)
{
}
QString ProcessingInstructionConstructor::leftTrimmed(const QString &input)
{
const int len = input.length();
for(int i = 0; i < len; ++i)
{
if(!input.at(i).isSpace())
return input.mid(i);
}
return QString(); /* input consists only of whitespace. All was trimmed. */
}
QString ProcessingInstructionConstructor::data(const DynamicContext::Ptr &context) const
{
const Item name(m_operand1->evaluateSingleton(context));
const Item dataArg(m_operand2->evaluateSingleton(context));
if(dataArg)
{
/* Perform trimming before validation, to increase speed. */
const QString value(leftTrimmed(dataArg.stringValue()));
if(value.contains(QLatin1String("?>")))
{
context->error(QtXmlPatterns::tr("The data of a processing instruction cannot contain the string %1").arg(formatData("?>")),
ReportContext::XQDY0026, this);
return QString();
}
else
return value;
}
else
return QString();
}
QXmlName ProcessingInstructionConstructor::evaluateTardata(const DynamicContext::Ptr &context) const
{
const Item name(m_operand1->evaluateSingleton(context));
return context->namePool()->allocateQName(QString(), name.stringValue());
}
Item ProcessingInstructionConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const NodeBuilder::Ptr nodeBuilder(context->nodeBuilder(QUrl()));
nodeBuilder->processingInstruction(evaluateTardata(context), data(context));
const QAbstractXmlNodeModel::Ptr nm(nodeBuilder->builtDocument());
context->addNodeModel(nm);
return nm->root(QXmlNodeModelIndex());
}
void ProcessingInstructionConstructor::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const
{
QAbstractXmlReceiver *const receiver = context->outputReceiver();
receiver->processingInstruction(evaluateTardata(context), data(context));
}
SequenceType::Ptr ProcessingInstructionConstructor::staticType() const
{
return CommonSequenceTypes::ExactlyOneProcessingInstruction;
}
SequenceType::List ProcessingInstructionConstructor::expectedOperandTypes() const
{
SequenceType::List result;
result.append(CommonSequenceTypes::ExactlyOneString);
result.append(CommonSequenceTypes::ZeroOrOneString);
return result;
}
Expression::Properties ProcessingInstructionConstructor::properties() const
{
return DisableElimination | IsNodeConstructor;
}
ExpressionVisitorResult::Ptr
ProcessingInstructionConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
QT_END_NAMESPACE
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