/**
* Prepare to write an element of {@code size} after {@code additional_bytes} have been written,
* e.g. if you write a string, you need to align such the int length field is aligned to {@link
* com.google.flatbuffers.Constants#SIZEOF_INT}, and the string data follows it directly. If all
* you need to do is alignment, {@code additional_bytes} will be 0.
*
* @param size This is the of the new element to write
* @param additional_bytes The padding size
*/
public void prep(int size, int additional_bytes) {
// Track the biggest thing we've ever aligned to.
if (size > minalign) minalign = size;
// Find the amount of alignment needed such that `size` is properly
// aligned after `additional_bytes`
int align_size = ((~(bb.capacity() - space + additional_bytes)) + 1) & (size - 1);
// Reallocate the buffer if needed.
while (space < align_size + size + additional_bytes) {
int old_buf_size = bb.capacity();
bb = growByteBuffer(bb);
space += bb.capacity() - old_buf_size;
}
pad(align_size);
}
