public Node Simple()
{
switch (CurrentToken)
{
case TokenCategory.LITERAL: {
NLiteral nLiteral = new NLiteral();
nLiteral.AnchorToken = Expect(TokenCategory.LITERAL);
return(nLiteral);
}
case TokenCategory.ASTERISK: {
NDuplicate nDuplicate = new NDuplicate();
nDuplicate.AnchorToken = Expect(TokenCategory.ASTERISK);
nDuplicate.Add(Simple());
return(nDuplicate);
}
case TokenCategory.SQUARE_BRACKET_LEFT: {
NSummation nSummation = new NSummation();
nSummation.AnchorToken = Expect(TokenCategory.SQUARE_BRACKET_LEFT);
MaxList(nSummation);
Expect(TokenCategory.SQUARE_BRACKET_RIGHT);
if (nSummation.children.Count == 1)
{
return(nSummation[0]);
}
return(nSummation);
}
default: {
Console.WriteLine(CurrentToken);
throw new Exception("This code should never be reached.");
}
}
}
public string Visit(NSummation nSummation)
{
string retVal = Visit((dynamic)nSummation[0]);
for (int i = 1; i < nSummation.children.Count; ++i)
{
retVal += Visit((dynamic)nSummation[i]);
retVal += "\t\tadd\n";
}
return(retVal);
}
