public void Visit(ExprUnaryNode node)
{
foreach (var subnode in node)
{
Visit((dynamic)subnode);
}
}
public Node ExprUnary()
{
var top = new ExprUnaryNode();
var temp = top;
if (firstOfExprUnary.Contains(CurrentToken))
{
while (firstOfExprUnary.Contains(CurrentToken))
{
switch (CurrentToken)
{
case TokenCategory.PLUS:
temp.AnchorToken = Expect(TokenCategory.PLUS);
break;
case TokenCategory.NEG:
temp.AnchorToken = Expect(TokenCategory.NEG);
break;
case TokenCategory.NOT:
temp.AnchorToken = Expect(TokenCategory.NOT);
break;
default:
throw new SyntaxError(firstOfExprUnary, tokenStream.Current);
}
if (!firstOfExprUnary.Contains(CurrentToken))
{
temp.Add(ExprPrimary());
}
else
{
var newNode = new ExprUnaryNode();
temp.Add(newNode);
temp = newNode;
}
}
}
else
{
return(ExprPrimary());
}
return(top);
}