/**
* Process prereq keys wrapped in []. If the key is wrapped in [], the prereq will be negated to
* check that the prereq is not passed, and the number of required matches is increased by the
* number of negated tests. Can handle nested prereqs.
*
* @param prereq The prereq to be negated.
*/
private void negateCampaignChoice(Prerequisite prereq) {
int modified = 0;
for (Prerequisite p : prereq.getPrerequisites()) {
if (p.getKind() == null) // PREMULT
{
negateCampaignChoice(p);
} else {
String preKey = p.getKey();
if (preKey.startsWith("[") && preKey.endsWith("]")) {
preKey = preKey.substring(1, preKey.length() - 1);
p.setKey(preKey);
p.setOperator(p.getOperator().invert());
++modified;
}
}
}
if (modified > 0) {
String oper = prereq.getOperand();
try {
oper = Integer.toString(Integer.parseInt(oper) + modified);
} catch (NumberFormatException nfe) {
oper = "(" + oper + ")+" + Integer.toString(modified);
}
prereq.setOperand(oper);
}
}
