public void Visit(NExpr nExpr)
{
Visit((dynamic)nExpr[0]);
if (nExpr.children.Count >= 2)
{
Visit((dynamic)nExpr[1]);
Visit((dynamic)nExpr[2]);
}
}
// Returns NExpr or any of subproduction nodes
public Node Expr()
{
Node resultingNode = ExprOr();
if (CurrentToken == TokenCategory.QUESTION_MARK)
{
NExpr tmp = new NExpr();
tmp.Add(resultingNode);
Expect(TokenCategory.QUESTION_MARK);
tmp.Add(Expr());
Expect(TokenCategory.COLON);
tmp.Add(Expr());
resultingNode = tmp;
}
return(resultingNode);
}
public string Visit(NExpr nExpr)
{
string retVal = Visit((dynamic)nExpr[0]);
if (nExpr.children.Count == 3)
{
string falseCase = GenerateLabel();
retVal += "\t\tbrfalse " + falseCase + "\n";
string exitTernary = GenerateLabel();
retVal += Visit((dynamic)nExpr[1]);
retVal += "\t\tbr " + exitTernary + "\n";
retVal += falseCase + ":\n";
retVal += Visit((dynamic)nExpr[2]);
retVal += exitTernary + ":\n";
}
return(retVal);
}
//------------------------------------------------------------
public void Visit(NExpr node)
{
Console.WriteLine($"+++++++++++++++ NExpr ++++++++++++++++");
//VisitChildren(node);
}