@Override
@ForceInline
public byte readByte(long offset) {
if (Jvm.isDebug()) checkReleased();
return memory.readByte(address + translate(offset));
}
public long readIncompleteLong(long offset) {
int remaining = (int) Math.min(8, readRemaining() - offset);
long l = 0;
for (int i = 0; i < remaining; i++) {
byte b = memory.readByte(address + offset + i);
l |= (long) (b & 0xFF) << (i * 8);
}
return l;
}
public int byteCheckSum() throws IORuntimeException {
if (readLimit() >= Integer.MAX_VALUE || start() != 0) throw new AssertionError();
byte b = 0;
NativeBytesStore bytesStore = (NativeBytesStore) bytesStore();
Memory memory = bytesStore.memory;
assert memory != null;
for (int i = (int) readPosition(), lim = (int) readLimit(); i < lim; i++) {
b += memory.readByte(bytesStore.address + i);
}
return b & 0xFF;
}
@Override
public boolean isEqual(String s) {
if (s == null || s.length() != readRemaining()) return false;
char[] chars = StringUtils.extractChars(s);
if (bytesStore instanceof NativeBytesStore) {
NativeBytesStore bs = (NativeBytesStore) this.bytesStore;
long address = bs.address + bs.translate(readPosition);
Memory memory = bs.memory;
for (int i = 0; i < chars.length; i++) {
int b = memory.readByte(address + i) & 0xFF;
if (b != chars[i]) return false;
}
} else {
try {
for (int i = 0; i < chars.length; i++) {
int b = bytesStore.readByte(readPosition + i) & 0xFF;
if (b != chars[i]) return false;
}
} catch (IORuntimeException e) {
throw new AssertionError(e);
}
}
return true;
}
void read8bit(long position, char[] chars, int length) {
long addr = address + translate(position);
Memory memory = OS.memory();
for (int i = 0; i < length; i++) chars[i] = (char) (memory.readByte(addr + i) & 0xFF);
}