public Comment firstComment; // list of comments
string CommentStr(Node p)
{
StringBuilder s = new StringBuilder();
while (p != null)
{
if (p.typ == Node.chr)
{
s.Append((char)p.val);
}
else if (p.typ == Node.clas)
{
CharSet set = tab.CharClassSet(p.val);
if (set.Elements() != 1)
{
parser.SemErr("character set contains more than 1 character");
}
s.Append((char)set.First());
}
else
{
parser.SemErr("comment delimiters may not be structured");
}
p = p.next;
}
if (s.Length == 0 || s.Length > 2)
{
parser.SemErr("comment delimiters must be 1 or 2 characters long");
s = new StringBuilder("?");
}
return(s.ToString());
}
public void ShiftWith(CharSet s, Tab tab)
{
if (s.Elements() == 1)
{
typ = Node.chr; sym = s.First();
}
else
{
CharClass c = tab.FindCharClass(s);
if (c == null)
{
c = tab.NewCharClass("#", s); // class with dummy name
}
typ = Node.clas; sym = c.n;
}
}
public void ShiftWith(CharSet s, Tab tab)
{
if (s.Elements() == 1) {
typ = Node.chr; sym = s.First();
} else {
CharClass c = tab.FindCharClass(s);
if (c == null) c = tab.NewCharClass("#", s); // class with dummy name
typ = Node.clas; sym = c.n;
}
}
