public static void CompSymbolSets() {
CompDeletableSymbols();
CompFirstSets();
CompFollowSets();
CompAnySets();
CompSyncSets();
if (ddt[1]) {
Trace.WriteLine();
Trace.WriteLine("First & follow symbols:");
Trace.WriteLine("----------------------"); Trace.WriteLine();
foreach (Symbol sym in Symbol.nonterminals) {
Trace.WriteLine(sym.name);
Trace.Write("first: "); Sets.PrintSet(sym.first, 10);
Trace.Write("follow: "); Sets.PrintSet(sym.follow, 10);
Trace.WriteLine();
}
}
if (ddt[4]) {
Trace.WriteLine();
Trace.WriteLine("ANY and SYNC sets:");
Trace.WriteLine("-----------------");
foreach (Node p in Node.nodes)
if (p.typ == Node.any || p.typ == Node.sync) {
Trace.Write("{0,4} {1,4}: ", p.n, Node.nTyp[p.typ]);
Sets.PrintSet(p.set, 11);
}
}
}
/// <returns>
/// BitArray which contains the first tokens.
/// </returns>
public static BitArray First(Node p) {
BitArray fs = First0(p, new BitArray(Node.nodes.Count));
if (ddt[3]) {
Trace.WriteLine();
if (p != null) Trace.WriteLine("First: node = {0}", p.n);
else Trace.WriteLine("First: node = null");
Sets.PrintSet(fs, 0);
}
return fs;
}