@Override
public DirectBitSet andNot(long longIndex, long value) {
long l = bytes.readLong(longIndex << 3);
long l2 = l & ~value;
bytes.writeLong(longIndex << 3, l2);
return this;
}
@Override
public DirectBitSet setAll() {
for (long i = 0; i < longLength; i++) {
bytes.writeLong(i << 3, ~0L);
}
return this;
}
@Override
public DirectBitSet flip(long fromIndex, long exclusiveToIndex) {
long fromLongIndex = fromIndex >> 6;
long toIndex = exclusiveToIndex - 1;
long toLongIndex = toIndex >> 6;
if (fromIndex < 0 || fromIndex > exclusiveToIndex || toLongIndex >= longLength)
throw new IndexOutOfBoundsException();
if (fromLongIndex != toLongIndex) {
long firstFullLongIndex = fromLongIndex;
if ((fromIndex & 0x3F) != 0) {
long fromByteIndex = fromLongIndex << 3;
long mask = (~0L) << fromIndex;
long l = bytes.readLong(fromByteIndex);
long l2 = l ^ mask;
bytes.writeLong(fromByteIndex, l2);
firstFullLongIndex++;
}
if ((exclusiveToIndex & 0x3F) == 0) {
for (long i = firstFullLongIndex; i <= toLongIndex; i++) {
bytes.writeLong(i << 3, ~bytes.readLong(i << 3));
}
} else {
for (long i = firstFullLongIndex; i < toLongIndex; i++) {
bytes.writeLong(i << 3, ~bytes.readLong(i << 3));
}
long toByteIndex = toLongIndex << 3;
// >>> ~toIndex === >>> (63 - (toIndex & 0x3F))
long mask = (~0L) >>> ~toIndex;
long l = bytes.readLong(toByteIndex);
long l2 = l ^ mask;
bytes.writeLong(toByteIndex, l2);
}
} else {
long byteIndex = fromLongIndex << 3;
long mask = ((~0L) << fromIndex) & ((~0L) >>> ~toIndex);
long l = bytes.readLong(byteIndex);
long l2 = l ^ mask;
bytes.writeLong(byteIndex, l2);
}
return this;
}
@Override
public DirectBitSet flip(long bitIndex) {
long longIndex = bitIndex >> 6;
if (bitIndex < 0 || longIndex >= longLength) throw new IndexOutOfBoundsException();
long byteIndex = longIndex << 3;
// only 6 lowest-order bits used, JLS 15.19
long mask = 1L << bitIndex;
long l = bytes.readLong(byteIndex);
long l2 = l ^ mask;
bytes.writeLong(byteIndex, l2);
return this;
}
@Override
public DirectBitSet clear(long bitIndex) {
long longIndex = bitIndex >> 6;
if (bitIndex < 0 || longIndex >= longLength) throw new IndexOutOfBoundsException();
long byteIndex = longIndex << 3;
long mask = 1L << bitIndex;
long l = bytes.readLong(byteIndex);
if ((l & mask) == 0) return this;
long l2 = l & ~mask;
bytes.writeLong(byteIndex, l2);
return this;
}
@Override
public boolean setIfClear(long bitIndex) {
long longIndex = bitIndex >> 6;
if (bitIndex < 0 || longIndex >= longLength) throw new IndexOutOfBoundsException();
long byteIndex = longIndex << 3;
long mask = 1L << bitIndex;
long l = bytes.readLong(byteIndex);
long l2 = l | mask;
if (l == l2) return false;
bytes.writeLong(byteIndex, l2);
return true;
}
