/**
* Returns the distance of the specified node.
*
* @param pre pre value
* @param kind node kind
* @return distance
*/
public int dist(final int pre, final int kind) {
switch (kind) {
case ELEM:
return table.read4(pre, 4);
case TEXT:
case COMM:
case PI:
return table.read4(pre, 8);
case ATTR:
int d = table.read1(pre, 0) >> 3 & IO.MAXATTS;
// skip additional attributes, if value is larger than maximum range
if (d >= IO.MAXATTS) while (d < pre && kind(pre - d) == ATTR) d++;
return d;
default:
return pre + 1;
}
}
/**
* Returns a size value (number of descendant table entries).
*
* @param pre pre value
* @param kind node kind
* @return size value
*/
public final int size(final int pre, final int kind) {
return kind == ELEM || kind == DOC ? table.read4(pre, 8) : 1;
}
/**
* Returns a unique node id.
*
* @param pre pre value
* @return node id
*/
public final int id(final int pre) {
return table.read4(pre, 12);
}