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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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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 |