public TypeBitmap(Tokenizer st) throws IOException {
this();
while (true) {
Tokenizer.Token t = st.get();
if (!t.isString()) break;
int typecode = Type.value(t.value);
if (typecode < 0) {
throw st.exception("Invalid type: " + t.value);
}
types.add(Mnemonic.toInteger(typecode));
}
st.unget();
}
public TypeBitmap(DNSInput in) throws WireParseException {
this();
int lastbase = -1;
while (in.remaining() > 0) {
if (in.remaining() < 2) throw new WireParseException("invalid bitmap descriptor");
int mapbase = in.readU8();
if (mapbase < lastbase) throw new WireParseException("invalid ordering");
int maplength = in.readU8();
if (maplength > in.remaining()) throw new WireParseException("invalid bitmap");
for (int i = 0; i < maplength; i++) {
int current = in.readU8();
if (current == 0) continue;
for (int j = 0; j < 8; j++) {
if ((current & (1 << (7 - j))) == 0) continue;
int typecode = mapbase * 256 + +i * 8 + j;
types.add(Mnemonic.toInteger(typecode));
}
}
}
}
public boolean contains(int typecode) {
return types.contains(Mnemonic.toInteger(typecode));
}