public void Visit(ExprRelNode node)
{
foreach (var subnode in node)
{
Visit((dynamic)subnode);
}
}
public Node ExprRel()
{
var node1 = ExprAdd();
while (firstOfExprRel.Contains(CurrentToken))
{
var node2 = new ExprRelNode();
switch (CurrentToken)
{
case TokenCategory.LESS:
node2.AnchorToken = Expect(TokenCategory.LESS);
break;
case TokenCategory.LESS_EQUAL:
node2.AnchorToken = Expect(TokenCategory.LESS_EQUAL);
break;
case TokenCategory.GREATER:
node2.AnchorToken = Expect(TokenCategory.GREATER);
break;
case TokenCategory.GREATER_EQUAL:
node2.AnchorToken = Expect(TokenCategory.GREATER_EQUAL);
break;
default:
throw new SyntaxError(firstOfExprRel, tokenStream.Current);
}
node2.Add(node1);
node2.Add(ExprAdd());
node1 = node2;
}
return(node1);
}
