| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** 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. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qbuiltintypes_p.h" |
| #include "qcommonsequencetypes_p.h" |
| #include "qitemmappingiterator_p.h" |
| |
| #include "qcopyof_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| CopyOf::CopyOf(const Expression::Ptr &operand, |
| const bool inheritNSS, |
| const bool preserveNSS) : SingleContainer(operand) |
| , m_inheritNamespaces(inheritNSS) |
| , m_preserveNamespaces(preserveNSS) |
| , m_settings((m_inheritNamespaces ? QAbstractXmlNodeModel::InheritNamespaces : QAbstractXmlNodeModel::NodeCopySettings()) | |
| (m_preserveNamespaces ? QAbstractXmlNodeModel::PreserveNamespaces : QAbstractXmlNodeModel::NodeCopySettings())) |
| { |
| } |
| |
| Expression::Ptr CopyOf::compress(const StaticContext::Ptr &context) |
| { |
| /* We have zero effect if we have these settings. */ |
| if(m_inheritNamespaces && m_preserveNamespaces) |
| return m_operand->compress(context); |
| else |
| { |
| const ItemType::Ptr t(m_operand->staticType()->itemType()); |
| /* We have no effect on the empty sequence or atomic values. */ |
| if(BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t) |
| || *t == *CommonSequenceTypes::Empty) |
| return m_operand->compress(context); |
| else |
| return SingleContainer::compress(context); |
| } |
| } |
| |
| void CopyOf::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const |
| { |
| /* Optimization: this completely breaks streaming. We get a call to |
| * evaluateToSequenceReceiver() but we require heap allocations by calling |
| * evaluateSequence(). */ |
| |
| const Item::Iterator::Ptr it(m_operand->evaluateSequence(context)); |
| QAbstractXmlReceiver *const receiver = context->outputReceiver(); |
| Item next(it->next()); |
| |
| while(next) |
| { |
| if(next.isNode()) |
| { |
| const QXmlNodeModelIndex &asNode = next.asNode(); |
| asNode.model()->copyNodeTo(asNode, receiver, m_settings); |
| } |
| else |
| receiver->item(next); |
| |
| next = it->next(); |
| } |
| } |
| |
| ExpressionVisitorResult::Ptr CopyOf::accept(const ExpressionVisitor::Ptr &visitor) const |
| { |
| return visitor->visit(this); |
| } |
| |
| SequenceType::Ptr CopyOf::staticType() const |
| { |
| return m_operand->staticType(); |
| } |
| |
| SequenceType::List CopyOf::expectedOperandTypes() const |
| { |
| SequenceType::List result; |
| result.append(CommonSequenceTypes::ZeroOrMoreItems); |
| return result; |
| } |
| |
| Expression::Properties CopyOf::properties() const |
| { |
| /* We have the content of node constructors as children, but even though |
| * createCopyOf() typically avoids creating us, we can still end up with an operand |
| * that allows compression. We must always avoid that, because we don't have |
| * implementation of evaluateSequence(), and so on. */ |
| return (m_operand->properties() & ~CreatesFocusForLast) | DisableElimination; |
| } |
| |
| ItemType::Ptr CopyOf::expectedContextItemType() const |
| { |
| return m_operand->expectedContextItemType(); |
| } |
| |
| QT_END_NAMESPACE |