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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 "qcommonsequencetypes_p.h" |
| #include "qgenericsequencetype_p.h" |
| #include "qoptimizationpasses_p.h" |
| |
| #include "qifthenclause_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| IfThenClause::IfThenClause(const Expression::Ptr &test, |
| const Expression::Ptr &then, |
| const Expression::Ptr &el) : TripleContainer(test, then, el) |
| { |
| } |
| |
| Item::Iterator::Ptr IfThenClause::evaluateSequence(const DynamicContext::Ptr &context) const |
| { |
| return m_operand1->evaluateEBV(context) |
| ? m_operand2->evaluateSequence(context) |
| : m_operand3->evaluateSequence(context); |
| } |
| |
| Item IfThenClause::evaluateSingleton(const DynamicContext::Ptr &context) const |
| { |
| return m_operand1->evaluateEBV(context) |
| ? m_operand2->evaluateSingleton(context) |
| : m_operand3->evaluateSingleton(context); |
| } |
| |
| bool IfThenClause::evaluateEBV(const DynamicContext::Ptr &context) const |
| { |
| return m_operand1->evaluateEBV(context) |
| ? m_operand2->evaluateEBV(context) |
| : m_operand3->evaluateEBV(context); |
| } |
| |
| void IfThenClause::evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const |
| { |
| if(m_operand1->evaluateEBV(context)) |
| m_operand2->evaluateToSequenceReceiver(context); |
| else |
| m_operand3->evaluateToSequenceReceiver(context); |
| } |
| |
| Expression::Ptr IfThenClause::compress(const StaticContext::Ptr &context) |
| { |
| const Expression::Ptr me(TripleContainer::compress(context)); |
| |
| if(me != this) |
| return me; |
| |
| /* All operands mustn't be evaluated in order for const folding to |
| * be possible. Let's see how far we get. */ |
| |
| if(m_operand1->isEvaluated()) |
| { |
| if(m_operand1->evaluateEBV(context->dynamicContext())) |
| return m_operand2; |
| else |
| return m_operand3; |
| } |
| else |
| return me; |
| } |
| |
| QList<QExplicitlySharedDataPointer<OptimizationPass> > IfThenClause::optimizationPasses() const |
| { |
| return OptimizationPasses::ifThenPasses; |
| } |
| |
| SequenceType::List IfThenClause::expectedOperandTypes() const |
| { |
| SequenceType::List result; |
| result.append(CommonSequenceTypes::EBV); |
| result.append(CommonSequenceTypes::ZeroOrMoreItems); |
| result.append(CommonSequenceTypes::ZeroOrMoreItems); |
| return result; |
| } |
| |
| SequenceType::Ptr IfThenClause::staticType() const |
| { |
| const SequenceType::Ptr t1(m_operand2->staticType()); |
| const SequenceType::Ptr t2(m_operand3->staticType()); |
| |
| return makeGenericSequenceType(t1->itemType() | t2->itemType(), |
| t1->cardinality() | t2->cardinality()); |
| } |
| |
| ExpressionVisitorResult::Ptr IfThenClause::accept(const ExpressionVisitor::Ptr &visitor) const |
| { |
| return visitor->visit(this); |
| } |
| |
| Expression::ID IfThenClause::id() const |
| { |
| return IDIfThenClause; |
| } |
| |
| /* |
| Expression::Properties IfThenClause::properties() const |
| { |
| return m_operand1->properties() |
| | m_operand2->properties() |
| | m_operand3->properties() |
| & ( Expression::RequiresFocus |
| | Expression::IsEvaluated |
| | Expression::DisableElimination); |
| } |
| */ |
| QT_END_NAMESPACE |