| /**************************************************************************** |
| ** |
| ** 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 "qgenericsequencetype_p.h" |
| |
| #include "qcontextitem_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| Item ContextItem::evaluateSingleton(const DynamicContext::Ptr &context) const |
| { |
| return context->contextItem(); |
| } |
| |
| Expression::Ptr ContextItem::compress(const StaticContext::Ptr &context) |
| { |
| m_itemType = context->contextItemType(); |
| return EmptyContainer::compress(context); |
| } |
| |
| Expression::Ptr ContextItem::typeCheck(const StaticContext::Ptr &context, |
| const SequenceType::Ptr &reqType) |
| { |
| m_itemType = context->contextItemType(); |
| return EmptyContainer::typeCheck(context, reqType); |
| } |
| |
| SequenceType::Ptr ContextItem::staticType() const |
| { |
| /* We test m_itemType here because Patternist View calls staticType() before the typeCheck() |
| * stage. */ |
| if(m_itemType) |
| return makeGenericSequenceType(m_itemType, Cardinality::exactlyOne()); |
| else |
| return CommonSequenceTypes::ExactlyOneItem; |
| } |
| |
| Expression::Properties ContextItem::properties() const |
| { |
| return DisableElimination | RequiresContextItem | EvaluationCacheRedundant; |
| } |
| |
| ExpressionVisitorResult::Ptr ContextItem::accept(const ExpressionVisitor::Ptr &visitor) const |
| { |
| return visitor->visit(this); |
| } |
| |
| Expression::ID ContextItem::id() const |
| { |
| return IDContextItem; |
| } |
| |
| ItemType::Ptr ContextItem::expectedContextItemType() const |
| { |
| return BuiltinTypes::item; |
| } |
| |
| const SourceLocationReflection *ContextItem::actualReflection() const |
| { |
| if(m_expr) |
| return m_expr.data(); |
| else |
| return this; |
| } |
| |
| void ContextItem::announceFocusType(const ItemType::Ptr &type) |
| { |
| Q_ASSERT(type); |
| m_itemType = type; |
| } |
| |
| QT_END_NAMESPACE |