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39 | |
40 | #include "qboolean_p.h" |
41 | #include "qcommonvalues_p.h" |
42 | #include "qliteral_p.h" |
43 | |
44 | #include "qorexpression_p.h" |
45 | |
46 | QT_BEGIN_NAMESPACE |
47 | |
48 | using namespace QPatternist; |
49 | |
50 | OrExpression::OrExpression(const Expression::Ptr &operand1, |
51 | const Expression::Ptr &operand2) : AndExpression(operand1, operand2) |
52 | { |
53 | } |
54 | |
55 | bool OrExpression::evaluateEBV(const DynamicContext::Ptr &context) const |
56 | { |
57 | return m_operand1->evaluateEBV(context) || m_operand2->evaluateEBV(context); |
58 | } |
59 | |
60 | Expression::Ptr OrExpression::compress(const StaticContext::Ptr &context) |
61 | { |
62 | const Expression::Ptr newMe(PairContainer::compress(context)); |
63 | |
64 | if(newMe != this) |
65 | return newMe; |
66 | |
67 | /* Both operands mustn't be evaluated in order to be able to compress. */ |
68 | if(m_operand1->isEvaluated() && m_operand1->evaluateEBV(context: context->dynamicContext())) |
69 | return wrapLiteral(item: CommonValues::BooleanTrue, context, r: this); |
70 | else if(m_operand2->isEvaluated() && m_operand2->evaluateEBV(context: context->dynamicContext())) |
71 | return wrapLiteral(item: CommonValues::BooleanTrue, context, r: this); |
72 | else |
73 | return Expression::Ptr(this); |
74 | } |
75 | |
76 | ExpressionVisitorResult::Ptr OrExpression::accept(const ExpressionVisitor::Ptr &visitor) const |
77 | { |
78 | return visitor->visit(this); |
79 | } |
80 | |
81 | QT_END_NAMESPACE |
82 | |