/**
* Add a sub-annotation to the current LAAnnotation and explain it.
*
* @param reason The reason for which a sub-annotation is created.
* @param coeff The Farkas coefficient of the sub-annotation.
*/
public void addAnnotation(LAReason reason, Rational coeff) {
assert ((coeff.signum() > 0) == reason.isUpper());
Rational sign = Rational.valueOf(coeff.signum(), 1);
LAAnnotation annot = mSubReasons.get(reason);
if (annot == null) {
annot = new LAAnnotation(reason);
mSubReasons.put(reason, annot);
if (mAnnotationStack != null) mAnnotationStack.addLast(annot);
reason.explain(this, reason.getVar().getEpsilon(), sign);
if (mAnnotationStack != null) mAnnotationStack.removeLast();
}
if (mAnnotationStack != null) mAnnotationStack.getLast().addFarkas(annot, coeff);
}
public void addEQAnnotation(LiteralReason reason, Rational coeff) {
// FIXME: make a special annotation for disequalities
assert ((coeff.signum() > 0) == reason.isUpper());
Rational sign = Rational.valueOf(coeff.signum(), 1);
LAAnnotation annot = mSubReasons.get(reason);
if (annot == null) {
annot = new LAAnnotation(reason);
mSubReasons.put(reason, annot);
mAnnotationStack.addLast(annot);
if (reason.getOldReason() instanceof LiteralReason)
reason.getOldReason().explain(this, reason.getVar().getEpsilon(), sign);
else addAnnotation(reason.getOldReason(), sign);
addLiteral(reason.getLiteral().negate(), sign);
mAnnotationStack.removeLast();
}
mAnnotationStack.getLast().addFarkas(annot, coeff);
}