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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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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