/**************************************************************************** | |
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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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** $QT_BEGIN_LICENSE:LGPL$ | |
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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 "qatomictype_p.h" | |
#include "qbuiltintypes_p.h" | |
#include "qcommonsequencetypes_p.h" | |
#include "qgenericsequencetype_p.h" | |
#include "qsequencemappingiterator_p.h" | |
#include "qatomizer_p.h" | |
QT_BEGIN_NAMESPACE | |
using namespace QPatternist; | |
Atomizer::Atomizer(const Expression::Ptr &operand) : SingleContainer(operand) | |
{ | |
} | |
Item::Iterator::Ptr Atomizer::mapToSequence(const Item &item, const DynamicContext::Ptr &) const | |
{ | |
/* Function & Operators, 2.4.2 fn:data, says "If the node does not have a | |
* typed value an error is raised [err:FOTY0012]." | |
* When does a node not have a typed value? */ | |
Q_ASSERT(item); | |
return item.sequencedTypedValue(); | |
} | |
Item::Iterator::Ptr Atomizer::evaluateSequence(const DynamicContext::Ptr &context) const | |
{ | |
return makeSequenceMappingIterator<Item>(ConstPtr(this), | |
m_operand->evaluateSequence(context), | |
context); | |
} | |
Item Atomizer::evaluateSingleton(const DynamicContext::Ptr &context) const | |
{ | |
const Item item(m_operand->evaluateSingleton(context)); | |
if(!item) /* Empty is allowed, cardinality is considered '?' */ | |
return Item(); | |
const Item::Iterator::Ptr it(mapToSequence(item, context)); | |
Q_ASSERT_X(it, Q_FUNC_INFO, "A valid QAbstractXmlForwardIterator must always be returned."); | |
Item result(it->next()); | |
Q_ASSERT_X(!it->next(), Q_FUNC_INFO, | |
"evaluateSingleton should never be used if the cardinality is two or more"); | |
return result; | |
} | |
Expression::Ptr Atomizer::typeCheck(const StaticContext::Ptr &context, | |
const SequenceType::Ptr &reqType) | |
{ | |
/* Compress -- the earlier the better. */ | |
if(BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(m_operand->staticType()->itemType())) | |
return m_operand->typeCheck(context, reqType); | |
return SingleContainer::typeCheck(context, reqType); | |
} | |
SequenceType::Ptr Atomizer::staticType() const | |
{ | |
const SequenceType::Ptr opt(m_operand->staticType()); | |
return makeGenericSequenceType(opt->itemType()->atomizedType(), | |
opt->cardinality()); | |
} | |
SequenceType::List Atomizer::expectedOperandTypes() const | |
{ | |
SequenceType::List result; | |
result.append(CommonSequenceTypes::ZeroOrMoreItems); | |
return result; | |
} | |
ExpressionVisitorResult::Ptr Atomizer::accept(const ExpressionVisitor::Ptr &visitor) const | |
{ | |
return visitor->visit(this); | |
} | |
const SourceLocationReflection *Atomizer::actualReflection() const | |
{ | |
return m_operand->actualReflection(); | |
} | |
QT_END_NAMESPACE |