/**
* 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;
}
}
/**
* Sets the namespace flag. Should be only called for element nodes.
*
* @param pre pre value
* @param ne namespace flag
*/
public final void nsFlag(final int pre, final boolean ne) {
table.write1(pre, 1, table.read1(pre, 1) & 0x7F | (ne ? 0x80 : 0));
}
/**
* Returns the namespace flag of the addressed element.
*
* @param pre pre value
* @return namespace flag
*/
public final boolean nsFlag(final int pre) {
return (table.read1(pre, 1) & 0x80) != 0;
}
/**
* Returns a reference to the namespace of the addressed element or attribute.
*
* @param pre pre value
* @param kind node kind
* @return namespace URI
*/
public final int uri(final int pre, final int kind) {
return kind == ELEM || kind == ATTR ? table.read1(pre, kind == ELEM ? 3 : 11) & 0xFF : 0;
}
/**
* Returns a number of attributes.
*
* @param pre pre value
* @param kind node kind
* @return number of attributes
*/
public final int attSize(final int pre, final int kind) {
int s = kind == ELEM ? table.read1(pre, 0) >> 3 & IO.MAXATTS : 1;
// skip additional attributes, if value is larger than maximum range
if (s >= IO.MAXATTS) while (s < meta.size - pre && kind(pre + s) == ATTR) s++;
return s;
}
/**
* Returns the node kind, which may be {@link #DOC}, {@link #ELEM}, {@link #TEXT}, {@link #ATTR},
* {@link #COMM} or {@link #PI}.
*
* @param pre pre value
* @return node kind
*/
public final int kind(final int pre) {
return table.read1(pre, 0) & 0x07;
}
