/** Reset the stack to a start position. */
public void reset() {
// If the stack was previously allocated, assume that about the same
// amount of stack space will be needed again; otherwise, use a very
// large stack size.
int linksSize = (_links == null) ? XPathContext.RECURSIONLIMIT : _links.length;
int varArraySize =
(_stackFrames == null) ? XPathContext.RECURSIONLIMIT * 2 : _stackFrames.length;
reset(linksSize, varArraySize);
}
/**
* Constructor for a variable stack.
*
* @param initStackSize The initial stack size. Must be at least one. The stack can grow if
* needed.
*/
public VariableStack(int initStackSize) {
// Allow for twice as many variables as stack link entries
reset(initStackSize, initStackSize * 2);
}
/** Constructor for a variable stack. */
public VariableStack() {
reset();
}