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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 "qcommonvalues_p.h" |
| #include "qcommonsequencetypes_p.h" |
| #include "qemptysequencetype_p.h" |
| |
| #include "qemptysequence_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| Expression::Ptr EmptySequence::create(const Expression *const replacementFor, |
| const StaticContext::Ptr &context) |
| { |
| Q_ASSERT(replacementFor); |
| Q_ASSERT(context); |
| |
| const Expression::Ptr retval(new EmptySequence()); |
| context->wrapExpressionWith(replacementFor, retval); |
| return retval; |
| } |
| |
| Item::Iterator::Ptr EmptySequence::evaluateSequence(const DynamicContext::Ptr &) const |
| { |
| return CommonValues::emptyIterator; |
| } |
| |
| Item EmptySequence::evaluateSingleton(const DynamicContext::Ptr &) const |
| { |
| return Item(); |
| } |
| |
| void EmptySequence::evaluateToSequenceReceiver(const DynamicContext::Ptr &) const |
| { |
| } |
| |
| ItemType::Ptr EmptySequence::type() const |
| { |
| return CommonSequenceTypes::Empty; |
| } |
| |
| SequenceType::Ptr EmptySequence::staticType() const |
| { |
| return CommonSequenceTypes::Empty; |
| } |
| |
| bool EmptySequence::evaluateEBV(const DynamicContext::Ptr &) const |
| { |
| return false; |
| } |
| |
| QString EmptySequence::stringValue() const |
| { |
| return QString(); |
| } |
| |
| ExpressionVisitorResult::Ptr EmptySequence::accept(const ExpressionVisitor::Ptr &visitor) const |
| { |
| return visitor->visit(this); |
| } |
| |
| Expression::ID EmptySequence::id() const |
| { |
| return IDEmptySequence; |
| } |
| |
| Expression::Properties EmptySequence::properties() const |
| { |
| return IsEvaluated; |
| } |
| |
| QT_END_NAMESPACE |