public override void VisitNeg(ASTNegative n)
{
CFlatType t = CheckSubTree(n.Expression);
if (t.IsNumeric)
{
n.CFlatType = t;
_lastSeenType = t;
}
else
{
ReportError(n.Location, "Only numeric datatypes can be negated. Got type '{0}'", TypeToFriendlyName(t));
}
}
protected override bool Visit(ASTNegative node)
{
if (!Visit(node.Child))
{
return(false);
}
var childType = node.Child.TypeInfo;
if (childType is FloatType f)
{
node.TypeInfo = f;
return(true);
}
if (childType is IntegerType i)
{
if (!i.Signed)
{
if (i.Size != BaseType.UnknownSize)
{
Error(node.Position, $"Cannot negate {childType}");
return(false);
}
// If the size of the unsigned interger is unknown, then we are free to convert between signed and unsigned
node.TypeInfo = Cache.GetInt(BaseType.UnknownSize, true);
return(true);
}
node.TypeInfo = i;
return(true);
}
Error(node.Position, $"Cannot negate {childType}");
return(false);
}
protected override bool Visit(ASTNegative node) => EmitUnary <CNegative>(node);
public override void VisitNeg(ASTNegative n)
{
throw new NotImplementedException();
}
protected abstract bool Visit(ASTNegative node);
