/**
* Applies forward conjunction reduction to two NLGElements e1 and e2,
* succeeding only if they are clauses (that is, e1.getCategory() ==
* e2.getCategory == {@link simplenlg.framework.PhraseCategory#CLAUSE}) and
* the clauses are not passive.
*
* @param previous
* the first phrase
* @param next
* the second phrase
* @return a coordinate phrase if aggregation is successful,
* <code>null</code> otherwise
*/
public override INLGElement apply(INLGElement previous, INLGElement next)
{
var success = false;
if (previous.getCategory().enumType == (int)PhraseCategoryEnum.CLAUSE &&
previous.getCategory().enumType == (int)PhraseCategoryEnum.CLAUSE &&
PhraseChecker.nonePassive(new List <INLGElement>()
{
previous, next
}))
{
var leftPeriphery = PhraseChecker.leftPeriphery(new List <INLGElement>()
{
previous, next
});
foreach (var pair in leftPeriphery)
{
if (pair.lemmaIdentical())
{
pair.elideRightmost();
success = true;
}
}
}
return(success
? factory.createCoordinatedPhrase(previous, next)
: null);
}
