protected override Expression VisitUnary(UnaryExpression node)
{
switch (node.NodeType)
{
case ExpressionType.Convert:
if (IsSingleBooleanProperty(node.Operand))
{
HandleSingleBooleanProperty(node.Operand as MemberExpression, true);
break;
}
if (node.Operand.Type.Is <MethodCallExpression>())
{
HandleAsMethodCall(node.Operand as MethodCallExpression);
break;
}
if (node.Type.IsEnumType() && !node.BelongsToParameter())
{
WriteParameter(node);
break;
}
var op = node.Operand as ConstantExpression;
if (IsSingleBooleanConstant(op))
{
HandleSingleBooleanConstant(op);
return(node);
}
Visit(node.Operand);
break;
case ExpressionType.New:
Visit(node.Operand);
break;
case ExpressionType.Not:
if (node.Operand.BelongsToParameter())
{
if (IsSingleBooleanProperty(node.Operand))
{
HandleSingleBooleanProperty(node.Operand as MemberExpression, false);
break;
}
}
var opf = node.Operand as ConstantExpression;
if (IsSingleBooleanConstant(opf))
{
HandleSingleBooleanConstant(opf);
return(node);
}
_sb.Append("not ");
Visit(node.Operand);
break;
}
return(node);
}