public virtual IExpression Clone(IsOperator op)
{
return(new IsOperator()
{
Left = CloneAndReturn(op.Left),
Right = op.Right
}.Normalize());
}
public virtual void Visit(IsOperator op)
{
AddParenthesesIfNeeded(op, () =>
{
op.Left.Visit(this);
Writer.Write(" is ");
switch (op.Right)
{
case IsOperand.Null:
case IsOperand.NotDefined:
Writer.Write("null");
break;
default:
Writer.Write("not null");
break;
}
});
}
public void Visit(IsOperator op)
{
AddParenthesesIfNeeded(op, () =>
{
op.Left.Visit(this);
switch (op.Right)
{
case IsOperand.Defined:
case IsOperand.NotNull:
WriteEncoded(" ne ");
break;
default:
WriteEncoded(" eq ");
break;
}
WriteEncoded("null");
});
}
public void Visit(IsOperator op)
{
switch (op.Right)
{
case IsOperand.NotDefined:
case IsOperand.NotNull:
_conditionWriter.WriteStartElement("not");
_conditionWriter.WriteStartElement("null");
op.Left.Visit(this);
_conditionWriter.WriteEndElement();
_conditionWriter.WriteEndElement();
break;
default:
_conditionWriter.WriteStartElement("null");
op.Left.Visit(this);
_conditionWriter.WriteEndElement();
break;
}
}
public virtual void Visit(IsOperator op)
{
op.Left.Visit(this);
}
void IExpressionVisitor.Visit(IsOperator op)
{
_clone = Clone(op);
}