/**************************************************************************** | |
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** This file is part of the QtXmlPatterns module of the Qt Toolkit. | |
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** GNU Lesser General Public License Usage | |
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** rights. These rights are described in the Nokia Qt LGPL Exception | |
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** GNU General Public License Usage | |
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** file. Please review the following information to ensure the GNU General | |
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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 |