/**
* This method performs the morphology for verbs.
*
* @param element
* the <code>InflectedWordElement</code>.
* @param baseWord
* the <code>WordElement</code> as created from the lexicon
* entry.
* @return a <code>StringElement</code> representing the word after
* inflection.
*/
public static INLGElement doVerbMorphology(InflectedWordElement element, WordElement baseWord)
{
string realised = null;
var numberValue = element.getFeature(Feature.NUMBER.ToString());
var personValue = element.getFeature(Feature.PERSON.ToString());
var tenseValue = element.getFeatureTense(Feature.TENSE.ToString());
var formValue = element.getFeature(Feature.FORM.ToString());
var patternValue = element.getFeature(LexicalFeature.DEFAULT_INFL);
// base form from baseWord if it exists, otherwise from element
var baseForm = getBaseForm(element, baseWord);
if (element.getFeatureAsBoolean(Feature.NEGATED.ToString()) || Form.BARE_INFINITIVE.Equals(formValue))
{
realised = baseForm;
}
else if (Form.PRESENT_PARTICIPLE.Equals(formValue))
{
realised = element.getFeatureAsString(LexicalFeature.PRESENT_PARTICIPLE);
if (realised == null && baseWord != null)
{
realised = baseWord.getFeatureAsString(LexicalFeature.PRESENT_PARTICIPLE);
}
if (realised == null)
{
if (Inflection.REGULAR_DOUBLE.Equals(patternValue))
{
realised = buildDoublePresPartVerb(baseForm);
}
else
{
realised = buildRegularPresPartVerb(baseForm);
}
}
}
else if (Tense.PAST.Equals(tenseValue) || Form.PAST_PARTICIPLE.Equals(formValue))
{
if (Form.PAST_PARTICIPLE.Equals(formValue))
{
realised = element.getFeatureAsString(LexicalFeature.PAST_PARTICIPLE);
if (realised == null && baseWord != null)
{
realised = baseWord.getFeatureAsString(LexicalFeature.PAST_PARTICIPLE);
}
if (realised == null)
{
if ("be".equalsIgnoreCase(baseForm))
{
realised = "been";
}
else if (Inflection.REGULAR_DOUBLE.Equals(patternValue))
{
realised = buildDoublePastVerb(baseForm);
}
else
{
realised = buildRegularPastVerb(baseForm, numberValue, personValue);
}
}
}
else
{
realised = element.getFeatureAsString(LexicalFeature.PAST);
if (realised == null && baseWord != null)
{
realised = baseWord.getFeatureAsString(LexicalFeature.PAST);
}
if (realised == null)
{
if (Inflection.REGULAR_DOUBLE.Equals(patternValue))
{
realised = buildDoublePastVerb(baseForm);
}
else
{
realised = buildRegularPastVerb(baseForm, numberValue, personValue);
}
}
}
}
else if ((numberValue == null || NumberAgreement.SINGULAR.Equals(numberValue)) && (personValue == null ||
Person.THIRD.Equals(
personValue)) &&
(Tense.PRESENT.Equals(tenseValue)))
{
realised = element.getFeatureAsString(LexicalFeature.PRESENT3S);
if (realised == null && baseWord != null && !"be".equalsIgnoreCase(baseForm))
{
realised = baseWord.getFeatureAsString(LexicalFeature.PRESENT3S);
}
if (realised == null)
{
realised = buildPresent3SVerb(baseForm);
}
}
else
{
if ("be".equalsIgnoreCase(baseForm))
{
if (Person.FIRST.Equals(personValue) && (NumberAgreement.SINGULAR.Equals(numberValue) ||
numberValue == null))
{
realised = "am";
}
else
{
realised = "are";
}
}
else
{
realised = baseForm;
}
}
var realisedElement = new StringElement(realised);
realisedElement.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
element.getFeature(InternalFeature.DISCOURSE_FUNCTION.ToString()));
return(realisedElement);
}