public static void XRef() {
SortedList tab = new SortedList();
// collect lines where symbols have been defined
foreach (Symbol sym in Symbol.nonterminals) {
ArrayList list = (ArrayList)tab[sym];
if (list == null) {list = new ArrayList(); tab[sym] = list;}
list.Add(- sym.line);
}
// collect lines where symbols have been referenced
foreach (Node n in Node.nodes) {
if (n.typ == Node.t || n.typ == Node.wt || n.typ == Node.nt) {
ArrayList list = (ArrayList)tab[n.sym];
if (list == null) {list = new ArrayList(); tab[n.sym] = list;}
list.Add(n.line);
}
}
// print cross reference list
Trace.WriteLine();
Trace.WriteLine("Cross reference list:");
Trace.WriteLine("--------------------"); Trace.WriteLine();
foreach (Symbol sym in tab.Keys) {
Trace.Write(" {0,-12}", Node.Name(sym.name));
ArrayList list = (ArrayList)tab[sym];
int col = 14;
foreach (int line in list) {
if (col + 5 > 80) {
Trace.WriteLine();
for (col = 1; col <= 14; col++) Trace.Write(" ");
}
Trace.Write("{0,5}", line); col += 5;
}
Trace.WriteLine();
}
Trace.WriteLine(); Trace.WriteLine();
}
static void PrintSym(Symbol sym) {
Trace.Write("{0,3} {1,-14} {2}", sym.n, Node.Name(sym.name), Node.nTyp[sym.typ]);
if (sym.attrPos==null) Trace.Write(" false "); else Trace.Write(" true ");
if (sym.typ == Node.nt) {
Trace.Write("{0,5}", Num(sym.graph));
if (sym.deletable) Trace.Write(" true "); else Trace.Write(" false ");
} else
Trace.Write(" ");
Trace.WriteLine("{0,5}", sym.line);
}
public static void PrintStates()
{
Trace.WriteLine("\n---------- states ----------");
for (State state = firstState; state != null; state = state.next)
{
bool first = true;
if (state.endOf == null)
{
Trace.Write(" ");
}
else
{
Trace.Write("E({0,12})", Node.Name(state.endOf.name));
}
Trace.Write("{0,3}:", state.nr);
if (state.firstAction == null)
{
Trace.WriteLine();
}
for (Action action = state.firstAction; action != null; action = action.next)
{
if (first)
{
Trace.Write(" ");
first = false;
}
else
{
Trace.Write(" ");
}
if (action.typ == Node.clas)
{
Trace.Write(((CharClass)CharClass.classes[action.sym]).name);
}
else
{
Trace.Write("{0, 3}", Ch((char)action.sym));
}
for (Target targ = action.target; targ != null; targ = targ.next)
{
Trace.Write(" {0, 3}", targ.state.nr);
}
if (action.tc == Node.contextTrans)
{
Trace.WriteLine(" context");
}
else
{
Trace.WriteLine();
}
}
}
Trace.WriteLine("\n---------- character classes ----------");
CharClass.WriteClasses();
}
