/// <summary>
/// left * right != 0 ??
/// </summary>
public override FlatAbstractDomain <bool> VisitMultiplication(Expression left, Expression right,
Expression original, FlatAbstractDomain <bool> data)
{
FlatAbstractDomain <bool> leftIsZero = IsNotZero(left);
FlatAbstractDomain <bool> rightIsZero = IsNotZero(right);
if (leftIsZero.IsNormal() && rightIsZero.IsNormal())
{
// One of the two is zero ...
if (leftIsZero.IsFalse() || rightIsZero.IsFalse())
{
return(CheckOutcome.False);
}
// Both are non zero
if (leftIsZero.IsTrue() && rightIsZero.IsTrue())
{
return(CheckOutcome.True);
}
}
if (leftIsZero.IsBottom || rightIsZero.IsBottom)
{
return(CheckOutcome.Bottom);
}
return(CheckOutcome.Top);
}
private static ProofOutcome ProcessOutcome <Local, Parameter, Method, Field, Property, Event, Type, Attribute, Assembly, Expression, Variable, LogOptions>
(
FlatAbstractDomain <bool> result,
BoxedExpression exp,
IMethodDriver <Local, Parameter, Method, Field, Property, Event, Type, Attribute, Assembly, Expression, Variable, LogOptions> mdriver,
out BoxedExpression simplified
)
where Expression : IEquatable <Expression>
where Variable : IEquatable <Variable>
where LogOptions : IFrameworkLogOptions
where Type : IEquatable <Type>
{
if (result.IsTrue())
{
simplified = BoxedExpression.Const(1, mdriver.MetaDataDecoder.System_Boolean, mdriver.MetaDataDecoder);
return(ProofOutcome.True);
}
if (result.IsFalse())
{
simplified = BoxedExpression.Const(0, mdriver.MetaDataDecoder.System_Boolean, mdriver.MetaDataDecoder);
return(ProofOutcome.False);
}
simplified = exp;
return(ProofOutcome.Top);
}