@Override
protected EBNF clone() {
/*
* protected Map<NonTerminal, List<? extends EBNFBranch>> nonTerminals;
* protected NonTerminal startSymbol;
*/
Map<NonTerminal, List<? extends EBNFBranch>> m =
new HashMap<NonTerminal, List<? extends EBNFBranch>>();
Iterator<NonTerminal> nts = nonTerminals.keySet().iterator();
while (nts.hasNext()) {
NonTerminal nt = nts.next().clone();
// travel through all registered non terminals
List<EBNFBranch> l = new ArrayList<EBNFBranch>();
Iterator<? extends EBNFBranch> j = nonTerminals.get(nt).iterator();
while (j.hasNext()) {
l.add(j.next().clone());
}
m.put(nt, l);
}
return new EBNF(startSymbol.clone(), m);
}
public String getNonTerminalDef(NonTerminal nt) {
if (nonTerminals.containsKey(nt)) {
String s = nt.toString() + " ::= ";
List<? extends EBNFBranch> branches = nonTerminals.get(nt);
for (int i = 0; i < branches.size(); i++) {
s += branches.get(i);
if (i != branches.size() - 1) {
s += " | ";
}
}
return s;
}
return null;
}