/** Pop the message before and record current message in the stack. */
void pop() {
ByteArrayOutputStream currentMessage = mMessage;
int currentPosition = mPosition;
mMessage = stack.currentMessage;
mPosition = stack.currentPosition;
toCopy = stack;
// Re using the top element of the stack to avoid memory allocation
stack = stack.next;
stackSize = stackSize - 1;
toCopy.currentMessage = currentMessage;
toCopy.currentPosition = currentPosition;
}
/** Create a new message buffer and push it into the stack. */
void newbuf() {
// You can't create a new buff when toCopy != null
// That is after calling pop() and before calling copy()
// If you do, it is a bug
if (toCopy != null) {
throw new RuntimeException("BUG: Invalid newbuf() before copy()");
}
LengthRecordNode temp = new LengthRecordNode();
temp.currentMessage = mMessage;
temp.currentPosition = mPosition;
temp.next = stack;
stack = temp;
stackSize = stackSize + 1;
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}
