| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** GNU Lesser General Public License Usage |
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| ** General Public License version 3 as published by the Free Software |
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| ** packaging of this file. Please review the following information to |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #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 |