/**
* Checks the discourse function of the clause and alters the form of the
* clause as necessary. The following algorithm is used: <br>
*
* <pre>
* If the clause represents a direct or indirect object then
* If form is currently Imperative then
* Set form to Infinitive
* Suppress the complementiser
* If form is currently Gerund and there are no subjects
* Suppress the complementiser
* If the clause represents a subject then
* Set the form to be Gerund
* Suppress the complementiser
* </pre>
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
*/
private static void checkDiscourseFunction(PhraseElement phrase)
{
List <INLGElement> subjects = phrase.getFeatureAsElementList(InternalFeature.SUBJECTS.ToString());
var clauseForm = phrase.getFeature(Feature.FORM.ToString());
var discourseValue = phrase.getFeature(InternalFeature.DISCOURSE_FUNCTION.ToString());
if (DiscourseFunction.OBJECT.Equals(discourseValue) ||
DiscourseFunction.INDIRECT_OBJECT.Equals(discourseValue))
{
if (Form.IMPERATIVE.Equals(clauseForm))
{
phrase.setFeature(Feature.SUPRESSED_COMPLEMENTISER.ToString(), true);
phrase.setFeature(Feature.FORM.ToString(), Form.INFINITIVE.ToString());
}
else if (Form.GERUND.Equals(clauseForm) && subjects.Count == 0)
{
phrase.setFeature(Feature.SUPRESSED_COMPLEMENTISER.ToString(), true);
}
}
else if (DiscourseFunction.SUBJECT.Equals(discourseValue))
{
phrase.setFeature(Feature.FORM.ToString(), Form.GERUND);
phrase.setFeature(Feature.SUPRESSED_COMPLEMENTISER.ToString(), true);
}
}
/**
* Adds a <em>do</em> verb to the realisation of this clause.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
* @param phraseFactory
* the phrase factory to be used.
*/
private static void addDoAuxiliary(PhraseElement phrase,
SyntaxProcessor parent,
NLGFactory phraseFactory,
ListElement realisedElement)
{
PhraseElement doPhrase = phraseFactory.createVerbPhrase("do");
doPhrase.setFeature(Feature.TENSE.ToString(), phrase.getFeatureTense(Feature.TENSE.ToString()));
doPhrase.setFeature(Feature.PERSON.ToString(), phrase.getFeature(Feature.PERSON.ToString()));
doPhrase.setFeature(Feature.NUMBER.ToString(), phrase.getFeature(Feature.NUMBER.ToString()));
realisedElement.addComponent(parent.realise(doPhrase));
}
/**
* Pushes the front verb onto the stack of verb components.
*
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param vgComponents
* the stack of verb components in the verb group.
* @param frontVG
* the first verb in the verb group.
* @param formValue
* the <code>Form</code> of the phrase.
* @param interrogative
* <code>true</code> if the phrase is interrogative.
*/
private static void pushFrontVerb(PhraseElement phrase,
Stack <INLGElement> vgComponents, INLGElement frontVG,
object formValue, bool interrogative)
{
var interrogType = phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString());
if (Form.GERUND.Equals(formValue))
{
frontVG.setFeature(Feature.FORM.ToString(), Form.PRESENT_PARTICIPLE);
vgComponents.push(frontVG);
}
else if (Form.PAST_PARTICIPLE.Equals(formValue))
{
frontVG.setFeature(Feature.FORM.ToString(), Form.PAST_PARTICIPLE);
vgComponents.push(frontVG);
}
else if (Form.PRESENT_PARTICIPLE.Equals(formValue))
{
frontVG.setFeature(Feature.FORM.ToString(), Form.PRESENT_PARTICIPLE);
vgComponents.push(frontVG);
}
else if ((!(formValue == null || Form.NORMAL.Equals(formValue)) || interrogative) &&
!isCopular(phrase.getHead()) && vgComponents.isEmpty())
{
// AG: fix below: if interrogative, only set non-morph feature in
// case it's not WHO_SUBJECT OR WHAT_SUBJECT
if (!(InterrogativeType.WHO_SUBJECT.Equals(interrogType) || InterrogativeType.WHAT_SUBJECT
.Equals(interrogType)))
{
frontVG.setFeature(InternalFeature.NON_MORPH.ToString(), true);
}
vgComponents.push(frontVG);
}
else
{
var numToUse = determineNumber(phrase.getParent(),
phrase);
frontVG.setFeature(Feature.TENSE.ToString(), phrase.getFeatureTense(Feature.TENSE.ToString()));
frontVG.setFeature(Feature.PERSON.ToString(), phrase
.getFeature(Feature.PERSON.ToString()));
frontVG.setFeature(Feature.NUMBER.ToString(), numToUse);
//don't push the front VG if it's a negated interrogative WH object question
if (!(phrase.getFeatureAsBoolean(Feature.NEGATED.ToString()) && (InterrogativeType.WHO_OBJECT
.Equals(interrogType) ||
InterrogativeType.WHAT_OBJECT
.Equals(interrogType))))
{
vgComponents.push(frontVG);
}
}
}
/**
* Adds the subjects to the beginning of the clause unless the clause is
* infinitive, imperative or passive, or the subjects split the verb.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
* @param splitVerb
* an <code>NLGElement</code> representing the subjects that
* should split the verb
*/
private static void addSubjectsToFront(PhraseElement phrase,
SyntaxProcessor parent,
ListElement realisedElement,
INLGElement splitVerb)
{
if (!Form.INFINITIVE.Equals(phrase.getFeature(Feature.FORM.ToString())) &&
!Form.IMPERATIVE.Equals(phrase.getFeature(Feature.FORM.ToString())) &&
!phrase.getFeatureAsBoolean(Feature.PASSIVE.ToString()) && splitVerb == null)
{
realisedElement.addComponents(realiseSubjects(phrase, parent).getChildren());
}
}
/**
* Realises the specifier of the noun phrase.
*
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the noun phrase.
*/
private static void realiseSpecifier(PhraseElement phrase,
SyntaxProcessor parent, ListElement realisedElement)
{
INLGElement specifierElement = phrase
.getFeatureAsElement(InternalFeature.SPECIFIER.ToString());
if (specifierElement != null &&
!phrase.getFeatureAsBoolean(InternalFeature.RAISED.ToString()) &&
!phrase.getFeatureAsBoolean(Feature.ELIDED.ToString()))
{
if (!specifierElement.isA(LexicalCategoryEnum.PRONOUN) &&
specifierElement.getCategory().enumType != (int)PhraseCategoryEnum.NOUN_PHRASE)
{
specifierElement.setFeature(Feature.NUMBER.ToString(), phrase
.getFeature(Feature.NUMBER.ToString()));
}
var currentElement = parent.realise(specifierElement);
if (currentElement != null)
{
currentElement.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
DiscourseFunction.SPECIFIER);
realisedElement.addComponent(currentElement);
}
}
}
/**
* Realises the complements of this phrase.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param realisedElement
* the current realisation of the noun phrase.
*/
private static void realiseComplements(SyntaxProcessor parent,
PhraseElement phrase, ListElement realisedElement)
{
var indirects = new ListElement();
var directs = new ListElement();
var unknowns = new ListElement();
foreach (INLGElement complement in phrase.getFeatureAsElementList(InternalFeature.COMPLEMENTS.ToString()))
{
var discourseValue = complement
.getFeature(InternalFeature.DISCOURSE_FUNCTION.ToString());
var currentElement = parent.realise(complement);
if (currentElement != null)
{
currentElement.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
DiscourseFunction.COMPLEMENT);
if (DiscourseFunction.INDIRECT_OBJECT.Equals(discourseValue))
{
indirects.addComponent(currentElement);
}
else if (DiscourseFunction.OBJECT.Equals(discourseValue))
{
directs.addComponent(currentElement);
}
else
{
unknowns.addComponent(currentElement);
}
}
}
if (!InterrogativeTypeExtensions.isIndirectObject(phrase
.getFeature(Feature.INTERROGATIVE_TYPE.ToString())))
{
realisedElement.addComponents(indirects.getChildren());
}
if (!phrase.getFeatureAsBoolean(Feature.PASSIVE.ToString()))
{
if (!InterrogativeTypeExtensions.isAndObject(phrase
.getFeature(Feature.INTERROGATIVE_TYPE.ToString())))
{
realisedElement.addComponents(directs.getChildren());
}
realisedElement.addComponents(unknowns.getChildren());
}
}
/**
* Realises the head noun of the noun phrase.
*
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the noun phrase.
*/
private static void realiseHeadNoun(PhraseElement phrase,
SyntaxProcessor parent, ListElement realisedElement)
{
INLGElement headElement = phrase.getHead();
if (headElement != null)
{
headElement.setFeature(Feature.ELIDED.ToString(), phrase
.getFeature(Feature.ELIDED.ToString()));
headElement.setFeature(LexicalFeature.GENDER, phrase
.getFeature(LexicalFeature.GENDER));
headElement.setFeature(InternalFeature.ACRONYM.ToString(), phrase
.getFeature(InternalFeature.ACRONYM.ToString()));
headElement.setFeature(Feature.NUMBER.ToString(), phrase
.getFeature(Feature.NUMBER.ToString()));
headElement.setFeature(Feature.PERSON.ToString(), phrase
.getFeature(Feature.PERSON.ToString()));
headElement.setFeature(Feature.POSSESSIVE.ToString(), phrase
.getFeature(Feature.POSSESSIVE.ToString()));
headElement.setFeature(Feature.PASSIVE.ToString(), phrase
.getFeature(Feature.PASSIVE.ToString()));
var currentElement = parent.realise(headElement);
currentElement.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
DiscourseFunction.SUBJECT);
realisedElement.addComponent(currentElement);
}
}
/**
* Adds <em>to</em> to the end of interrogatives concerning indirect
* objects. For example, <em>who did John give the flower <b>to</b></em>.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
* @param phraseFactory
* the phrase factory to be used.
*/
private static void addEndingTo(PhraseElement phrase,
SyntaxProcessor parent,
ListElement realisedElement,
NLGFactory phraseFactory)
{
if (InterrogativeType.WHO_INDIRECT_OBJECT.Equals(phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString())))
{
var word = phraseFactory.createWord("to", new LexicalCategory_PREPOSITION());
realisedElement.addComponent(parent.realise(word));
}
}
/**
* Copies the front modifiers of the clause to the list of post-modifiers of
* the verb only if the phrase has infinitive form.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param verbElement
* the <code>NLGElement</code> representing the verb phrase for
* this clause.
*/
private static void copyFrontModifiers(PhraseElement phrase, INLGElement verbElement)
{
var frontModifiers = phrase.getFeatureAsElementList(InternalFeature.FRONT_MODIFIERS.ToString());
var clauseForm = phrase.getFeature(Feature.FORM.ToString());
// bug fix by Chris Howell (Agfa) -- do not overwrite existing post-mods
// in the VP
if (verbElement != null)
{
List <INLGElement> phrasePostModifiers = phrase.getFeatureAsElementList(InternalFeature.POSTMODIFIERS.ToString());
if (verbElement is PhraseElement)
{
List <INLGElement> verbPostModifiers =
verbElement.getFeatureAsElementList(InternalFeature.POSTMODIFIERS.ToString());
foreach (var eachModifier in phrasePostModifiers)
{
// need to check that VP doesn't already contain the
// post-modifier
// this only happens if the phrase has already been realised
// and later modified, with realiser called again. In that
// case, postmods will be copied over twice
if (!verbPostModifiers.Contains(eachModifier))
{
((PhraseElement)verbElement).addPostModifier(eachModifier);
}
}
}
}
// if (verbElement != null) {
// verbElement.setFeature(InternalFeature.POSTMODIFIERS, phrase
// .getFeature(InternalFeature.POSTMODIFIERS));
// }
if (Form.INFINITIVE.Equals(clauseForm))
{
phrase.setFeature(Feature.SUPRESSED_COMPLEMENTISER.ToString(), true);
foreach (var eachModifier in frontModifiers)
{
if (verbElement is PhraseElement)
{
((PhraseElement)verbElement).addPostModifier(eachModifier);
}
}
phrase.removeFeature(InternalFeature.FRONT_MODIFIERS.ToString());
if (verbElement != null)
{
verbElement.setFeature(InternalFeature.NON_MORPH.ToString(), true);
}
}
}
/**
* Adds <em>not</em> to the stack if the phrase is negated.
*
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param vgComponents
* the stack of verb components in the verb group.
* @param frontVG
* the first verb in the verb group.
* @param hasModal
* the phrase has a modal
* @return the new element for the front of the group.
*/
private static INLGElement createNot(PhraseElement phrase,
Stack <INLGElement> vgComponents, INLGElement frontVG, bool hasModal)
{
var newFront = frontVG;
if (phrase.getFeatureAsBoolean(Feature.NEGATED.ToString()))
{
var factory = phrase.getFactory();
// before adding "do", check if this is an object WH
// interrogative
// in which case, don't add anything as it's already done by
// ClauseHelper
var interrType = phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString());
var addDo = !(InterrogativeType.WHAT_OBJECT.Equals(interrType) || InterrogativeType.WHO_OBJECT
.Equals(interrType));
if (!vgComponents.empty() || frontVG != null && isCopular(frontVG))
{
vgComponents.push(new InflectedWordElement(
"not", new LexicalCategory_ADVERB()));
}
else
{
if (frontVG != null && !hasModal)
{
frontVG.setFeature(Feature.NEGATED.ToString(), true);
vgComponents.push(frontVG);
}
vgComponents.push(new InflectedWordElement(
"not", new LexicalCategory_ADVERB()));
if (addDo)
{
if (factory != null)
{
newFront = factory.createInflectedWord("do",
new LexicalCategory_VERB());
}
else
{
newFront = new InflectedWordElement(
"do", new LexicalCategory_VERB());
}
}
}
}
return(newFront);
}
/**
* Pushes the particles of the main verb onto the verb group stack.
*
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param vgComponents
* the stack of verb components in the verb group.
*/
private static void pushParticles(PhraseElement phrase,
SyntaxProcessor parent, Stack <INLGElement> vgComponents)
{
var particle = phrase.getFeature(Feature.PARTICLE.ToString());
if (particle is string)
{
vgComponents.push(new StringElement((string)particle));
}
else if (particle is INLGElement)
{
vgComponents.push(parent.realise((INLGElement)particle));
}
}
/**
* Realises the head element of the phrase.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param realisedElement
* the current realisation of the noun phrase.
*/
private static void realiseHead(SyntaxProcessor parent,
PhraseElement phrase, ListElement realisedElement)
{
INLGElement head = phrase.getHead();
if (head != null)
{
if (phrase.hasFeature(Feature.IS_COMPARATIVE.ToString()))
{
head.setFeature(Feature.IS_COMPARATIVE.ToString(), phrase
.getFeature(Feature.IS_COMPARATIVE.ToString()));
}
else if (phrase.hasFeature(Feature.IS_SUPERLATIVE.ToString()))
{
head.setFeature(Feature.IS_SUPERLATIVE.ToString(), phrase
.getFeature(Feature.IS_SUPERLATIVE.ToString()));
}
head = parent.realise(head);
head.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
DiscourseFunction.HEAD.ToString());
realisedElement.addComponent(head);
}
}
/**
* Checks to see if this clause is a subordinate clause. If it is then the
* complementiser is added as a component to the realised element
* <b>unless</b> the complementiser has been suppressed.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
*/
private static void addComplementiser(PhraseElement phrase, SyntaxProcessor parent, ListElement realisedElement)
{
INLGElement currentElement;
if (ClauseStatus.SUBORDINATE.Equals(phrase.getFeature(InternalFeature.CLAUSE_STATUS.ToString())) &&
!phrase.getFeatureAsBoolean(Feature.SUPRESSED_COMPLEMENTISER.ToString()))
{
currentElement = parent.realise(phrase.getFeatureAsElement(Feature.COMPLEMENTISER.ToString()));
if (currentElement != null)
{
realisedElement.addComponent(currentElement);
}
}
}
/**
* Realises the main group of verbs in the phrase.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @param mainVerbRealisation
* the stack of the main verbs in the phrase.
* @param realisedElement
* the current realisation of the noun phrase.
*/
private static void realiseMainVerb(SyntaxProcessor parent,
PhraseElement phrase, Stack <INLGElement> mainVerbRealisation,
ListElement realisedElement)
{
while (!mainVerbRealisation.isEmpty())
{
var main = mainVerbRealisation.pop();
main.setFeature(Feature.INTERROGATIVE_TYPE.ToString(), phrase
.getFeature(Feature.INTERROGATIVE_TYPE.ToString()));
var currentElement = parent.realise(main);
if (currentElement != null)
{
realisedElement.addComponent(currentElement);
}
}
}
/**
* Realises the subjects for the clause.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
*/
private static ListElement realiseSubjects(PhraseElement phrase, SyntaxProcessor parent)
{
INLGElement currentElement = null;
var realisedElement = new ListElement();
foreach (INLGElement subject in phrase.getFeatureAsElementList(InternalFeature.SUBJECTS.ToString()))
{
subject.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(), DiscourseFunction.SUBJECT);
if (Form.GERUND.Equals(phrase.getFeature(Feature.FORM.ToString())) &&
!phrase.getFeatureAsBoolean(Feature.SUPPRESS_GENITIVE_IN_GERUND.ToString()))
{
subject.setFeature(Feature.POSSESSIVE.ToString(), true);
}
currentElement = parent.realise(subject);
if (currentElement != null)
{
realisedElement.addComponent(currentElement);
}
}
return(realisedElement);
}
/**
* Determines the number agreement for the phrase ensuring that any number
* agreement on the parent element is inherited by the phrase.
*
* @param parent
* the parent element of the phrase.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @return the <code>NumberAgreement</code> to be used for the phrase.
*/
private static NumberAgreement determineNumber(INLGElement parent,
PhraseElement phrase)
{
var numberValue = phrase.getFeature(Feature.NUMBER.ToString());
NumberAgreement number;
if (numberValue != null && numberValue is NumberAgreement)
{
number = (NumberAgreement)numberValue;
}
else
{
number = NumberAgreement.SINGULAR;
}
// Ehud Reiter = modified below to force number from VP for WHAT_SUBJECT
// and WHO_SUBJECT interrogatuves
if (parent is PhraseElement)
{
if (parent.isA(PhraseCategoryEnum.CLAUSE) &&
(PhraseHelper.isExpletiveSubject((PhraseElement)parent) ||
InterrogativeType.WHO_SUBJECT.Equals(parent
.getFeature(Feature.INTERROGATIVE_TYPE.ToString())) || InterrogativeType.WHAT_SUBJECT
.Equals(parent
.getFeature(Feature.INTERROGATIVE_TYPE.ToString()))) &&
isCopular(phrase.getHead()))
{
if (hasPluralComplement(phrase
.getFeatureAsElementList(InternalFeature.COMPLEMENTS.ToString())))
{
number = NumberAgreement.PLURAL;
}
else
{
number = NumberAgreement.SINGULAR;
}
}
}
return(number);
}
/**
* Realises the complements of passive clauses; also sets number, person for
* passive
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
* @param verbElement
* the <code>NLGElement</code> representing the verb phrase for
* this clause.
*/
private static INLGElement addPassiveComplementsNumberPerson(PhraseElement phrase,
SyntaxProcessor parent,
ListElement realisedElement,
INLGElement verbElement)
{
object passiveNumber = null;
object passivePerson = null;
INLGElement currentElement = null;
INLGElement splitVerb = null;
var verbPhrase = phrase.getFeatureAsElement(InternalFeature.VERB_PHRASE.ToString());
// count complements to set plural feature if more than one
var numComps = 0;
var coordSubj = false;
if (phrase.getFeatureAsBoolean(Feature.PASSIVE.ToString()) && verbPhrase != null &&
!InterrogativeType.WHAT_OBJECT.Equals(phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString())))
{
// complements of a clause are stored in the VPPhraseSpec
foreach (var subject in verbPhrase.getFeatureAsElementList(InternalFeature.COMPLEMENTS.ToString()))
{
// AG: complement needn't be an NP
// subject.isA(PhraseCategory.NOUN_PHRASE) &&
if (DiscourseFunction.OBJECT.Equals(subject.getFeature(InternalFeature.DISCOURSE_FUNCTION.ToString())))
{
subject.setFeature(Feature.PASSIVE.ToString(), true);
numComps++;
currentElement = parent.realise(subject);
if (currentElement != null)
{
currentElement.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(), DiscourseFunction.OBJECT);
if (phrase.hasFeature(Feature.INTERROGATIVE_TYPE.ToString()))
{
splitVerb = currentElement;
}
else
{
realisedElement.addComponent(currentElement);
}
}
// flag if passive subject is coordinated with an "and"
if (!coordSubj && subject is CoordinatedPhraseElement)
{
var conj = ((CoordinatedPhraseElement)subject).getConjunction();
coordSubj = (conj != null && conj.Equals("and"));
}
if (passiveNumber == null)
{
passiveNumber = subject.getFeature(Feature.NUMBER.ToString());
}
else
{
passiveNumber = NumberAgreement.PLURAL;
}
if (Person.FIRST.Equals(subject.getFeature(Feature.PERSON.ToString())))
{
passivePerson = Person.FIRST;
}
else if (Person.SECOND.Equals(subject.getFeature(Feature.PERSON.ToString())) &&
!Person.FIRST.Equals(passivePerson))
{
passivePerson = Person.SECOND;
}
else if (passivePerson == null)
{
passivePerson = Person.THIRD;
}
if (Form.GERUND.Equals(phrase.getFeature(Feature.FORM.ToString())) &&
!phrase.getFeatureAsBoolean(Feature.SUPPRESS_GENITIVE_IN_GERUND.ToString()))
{
subject.setFeature(Feature.POSSESSIVE.ToString(), true);
}
}
}
}
if (verbElement != null)
{
if (passivePerson != null)
{
verbElement.setFeature(Feature.PERSON.ToString(), passivePerson);
// below commented out. for non-passive, number and person set
// by checkSubjectNumberPerson
// } else {
// verbElement.setFeature(Feature.PERSON, phrase
// .getFeature(Feature.PERSON));
}
if (numComps > 1 || coordSubj)
{
verbElement.setFeature(Feature.NUMBER.ToString(), NumberAgreement.PLURAL);
}
else if (passiveNumber != null)
{
verbElement.setFeature(Feature.NUMBER.ToString(), passiveNumber);
}
}
return(splitVerb);
}
/**
* Checks the subjects of the phrase to determine if there is more than one
* subject. This ensures that the verb phrase is correctly set. Also set
* person correctly
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param verbElement
* the <code>NLGElement</code> representing the verb phrase for
* this clause.
*/
private static void checkSubjectNumberPerson(PhraseElement phrase, INLGElement verbElement)
{
INLGElement currentElement = null;
List <INLGElement> subjects = phrase.getFeatureAsElementList(InternalFeature.SUBJECTS.ToString());
var pluralSubjects = false;
var person = Person.FIRST;
var personSet = false;
if (subjects != null)
{
switch (subjects.size())
{
case 0:
break;
case 1:
currentElement = subjects.get(0);
// coordinated NP with "and" are plural (not coordinated NP with
// "or")
if (currentElement is CoordinatedPhraseElement &&
((CoordinatedPhraseElement)currentElement).checkIfPlural())
{
pluralSubjects = true;
}
else if ((currentElement.getFeature(Feature.NUMBER.ToString())?.ToString() == NumberAgreement.PLURAL.ToString()) &&
!(currentElement is SPhraseSpec)) // ER mod-
// clauses
// are
// singular
// as
// NPs,
// even
// if
// they
// are
// plural
// internally
{
pluralSubjects = true;
}
else if (currentElement.isA(PhraseCategoryEnum.NOUN_PHRASE))
{
INLGElement currentHead = currentElement.getFeatureAsElement(InternalFeature.HEAD.ToString());
var p = currentElement.getFeature(Feature.PERSON.ToString());
if (p != null)
{
personSet = true;
person = p.ToPerson();
}
if (currentHead == null)
{
// subject is null and therefore is not gonna be plural
pluralSubjects = false;
}
else if (currentHead.getFeature(Feature.NUMBER.ToString()) == NumberAgreement.PLURAL.ToString())
{
pluralSubjects = true;
}
else if (currentHead is ListElement)
{
pluralSubjects = true;
/*
* } else if (currentElement is
* CoordinatedPhraseElement &&
* "and".Equals(currentElement.getFeatureAsString(
* Feature.CONJUNCTION))) { pluralSubjects
* = true;
*/
}
}
break;
default:
pluralSubjects = true;
break;
}
}
if (verbElement != null)
{
verbElement.setFeature(Feature.NUMBER.ToString(), pluralSubjects
? NumberAgreement.PLURAL
: phrase.getFeature(Feature.NUMBER.ToString()));
if (personSet)
{
verbElement.setFeature(Feature.PERSON.ToString(), person);
}
}
}
/**
* Creates a stack of verbs for the verb phrase. Additional auxiliary verbs
* are added as required based on the features of the verb phrase.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @return the verb group as a <code>Stack</code> of <code>NLGElement</code>
* s.
*/
public static Stack <INLGElement> createVerbGroup(
SyntaxProcessor parent, PhraseElement phrase)
{
string actualModal = null;
var formValue = phrase.getFeature(Feature.FORM.ToString());
Tense tenseValue = phrase.getFeatureTense(Feature.TENSE.ToString());
var modal = phrase.getFeatureAsString(Feature.MODAL.ToString());
var modalPast = false;
var vgComponents = new Stack <INLGElement>();
var interrogative = phrase.hasFeature(Feature.INTERROGATIVE_TYPE.ToString());
if (Form.GERUND.Equals(formValue) || Form.INFINITIVE.Equals(formValue))
{
tenseValue = Tense.PRESENT;
}
if (Form.INFINITIVE.Equals(formValue))
{
actualModal = "to";
}
else if (formValue == null || Form.NORMAL.Equals(formValue))
{
if (Tense.FUTURE.Equals(tenseValue) &&
modal == null &&
((!(phrase.getHead() is CoordinatedPhraseElement)) || (phrase
.getHead() is CoordinatedPhraseElement &&
interrogative)))
{
actualModal = "will";
}
else if (modal != null)
{
actualModal = modal;
if (Tense.PAST.Equals(tenseValue))
{
modalPast = true;
}
}
}
pushParticles(phrase, parent, vgComponents);
var frontVG = grabHeadVerb(phrase, tenseValue, modal != null);
checkImperativeInfinitive(formValue, frontVG);
if (phrase.getFeatureAsBoolean(Feature.PASSIVE.ToString()))
{
frontVG = addBe(frontVG, vgComponents, Form.PAST_PARTICIPLE);
}
if (phrase.getFeatureAsBoolean(Feature.PROGRESSIVE.ToString()))
{
frontVG = addBe(frontVG, vgComponents, Form.PRESENT_PARTICIPLE);
}
if (phrase.getFeatureAsBoolean(Feature.PERFECT.ToString()) ||
modalPast)
{
frontVG = addHave(frontVG, vgComponents, modal, tenseValue);
}
frontVG = pushIfModal(actualModal != null, phrase, frontVG,
vgComponents);
frontVG = createNot(phrase, vgComponents, frontVG, modal != null);
if (frontVG != null)
{
pushFrontVerb(phrase, vgComponents, frontVG, formValue,
interrogative);
}
pushModal(actualModal, phrase, vgComponents);
return(vgComponents);
}
/**
* This is the main controlling method for handling interrogative clauses.
* The actual steps taken are dependent on the type of question being asked.
* The method also determines if there is a subject that will split the verb
* group of the clause. For example, the clause
* <em>the man <b>should give</b> the woman the flower</em> has the verb
* group indicated in <b>bold</b>. The phrase is rearranged as yes/no
* question as
* <em><b>should</b> the man <b>give</b> the woman the flower</em> with the
* subject <em>the man</em> splitting the verb group.
*
* @param phrase
* the <code>PhraseElement</code> representing this clause.
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param realisedElement
* the current realisation of the clause.
* @param phraseFactory
* the phrase factory to be used.
* @param verbElement
* the <code>NLGElement</code> representing the verb phrase for
* this clause.
* @return an <code>NLGElement</code> representing a subject that should
* split the verb
*/
private static INLGElement realiseInterrogative(PhraseElement phrase,
SyntaxProcessor parent,
ListElement realisedElement,
NLGFactory phraseFactory,
INLGElement verbElement)
{
INLGElement splitVerb = null;
if (phrase.getParent() != null)
{
phrase.getParent().setFeature(InternalFeature.INTERROGATIVE.ToString(), true);
}
var type = phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString());
if (type is InterrogativeType)
{
switch ((InterrogativeType)type)
{
case InterrogativeType.YES_NO:
splitVerb = realiseYesNo(phrase, parent, verbElement, phraseFactory, realisedElement);
break;
case InterrogativeType.WHO_SUBJECT:
case InterrogativeType.WHAT_SUBJECT:
realiseInterrogativeKeyWord(((InterrogativeType)type).getString(),
new LexicalCategory_PRONOUN(),
parent,
realisedElement,
phraseFactory);
phrase.removeFeature(InternalFeature.SUBJECTS.ToString());
break;
case InterrogativeType.HOW_MANY:
realiseInterrogativeKeyWord("how", new LexicalCategory_PRONOUN(), parent, realisedElement,
phraseFactory);
realiseInterrogativeKeyWord("many", new LexicalCategory_ADVERB(), parent, realisedElement,
phraseFactory);
break;
case InterrogativeType.HOW:
case InterrogativeType.WHY:
case InterrogativeType.WHERE:
case InterrogativeType.WHO_OBJECT:
case InterrogativeType.WHO_INDIRECT_OBJECT:
case InterrogativeType.WHAT_OBJECT:
splitVerb = realiseObjectWHInterrogative(((InterrogativeType)type).getString(),
phrase,
parent,
realisedElement,
phraseFactory);
break;
case InterrogativeType.HOW_PREDICATE:
splitVerb = realiseObjectWHInterrogative("how", phrase, parent, realisedElement, phraseFactory);
break;
default:
break;
}
}
return(splitVerb);
}
/**
* The main method for controlling the syntax realisation of clauses.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that called this
* method.
* @param phrase
* the <code>PhraseElement</code> representation of the clause.
* @return the <code>NLGElement</code> representing the realised clause.
*/
public static INLGElement realise(SyntaxProcessor parent, PhraseElement phrase)
{
ListElement realisedElement = null;
var phraseFactory = phrase.getFactory();
INLGElement splitVerb = null;
var interrogObj = false;
if (phrase != null)
{
realisedElement = new ListElement();
var verbElement = phrase.getFeatureAsElement(InternalFeature.VERB_PHRASE.ToString());
if (verbElement == null)
{
verbElement = phrase.getHead();
}
checkSubjectNumberPerson(phrase, verbElement);
checkDiscourseFunction(phrase);
copyFrontModifiers(phrase, verbElement);
addComplementiser(phrase, parent, realisedElement);
addCuePhrase(phrase, parent, realisedElement);
if (phrase.hasFeature(Feature.INTERROGATIVE_TYPE.ToString()))
{
var inter = phrase.getFeature(Feature.INTERROGATIVE_TYPE.ToString());
interrogObj = (InterrogativeType.WHAT_OBJECT.Equals(inter) ||
InterrogativeType.WHO_OBJECT.Equals(inter) ||
InterrogativeType.HOW_PREDICATE.Equals(inter) ||
InterrogativeType.HOW.Equals(inter) ||
InterrogativeType.WHY.Equals(inter) || InterrogativeType.WHERE.Equals(inter));
splitVerb = realiseInterrogative(phrase, parent, realisedElement, phraseFactory, verbElement);
}
else
{
PhraseHelper.realiseList(parent,
realisedElement,
phrase.getFeatureAsElementList(InternalFeature.FRONT_MODIFIERS.ToString()),
DiscourseFunction.FRONT_MODIFIER);
}
addSubjectsToFront(phrase, parent, realisedElement, splitVerb);
var passiveSplitVerb = addPassiveComplementsNumberPerson(phrase,
parent,
realisedElement,
verbElement);
if (passiveSplitVerb != null)
{
splitVerb = passiveSplitVerb;
}
// realise verb needs to know if clause is object interrogative
realiseVerb(phrase, parent, realisedElement, splitVerb, verbElement, interrogObj);
addPassiveSubjects(phrase, parent, realisedElement, phraseFactory);
addInterrogativeFrontModifiers(phrase, parent, realisedElement);
addEndingTo(phrase, parent, realisedElement, phraseFactory);
}
return(realisedElement);
}
/**
* Creates the appropriate pronoun if the subject of the noun phrase is
* pronominal.
*
* @param parent
* the parent <code>SyntaxProcessor</code> that will do the
* realisation of the complementiser.
* @param phrase
* the <code>PhraseElement</code> representing this noun phrase.
* @return the <code>NLGElement</code> representing the pronominal.
*/
private static INLGElement createPronoun(SyntaxProcessor parent,
PhraseElement phrase)
{
var pronoun = "it";
var phraseFactory = phrase.getFactory();
var personValue = phrase.getFeature(Feature.PERSON.ToString());
if (Person.FIRST.Equals(personValue))
{
pronoun = "I";
}
else if (Person.SECOND.Equals(personValue))
{
pronoun = "you";
}
else
{
var genderValue = phrase.getFeature(LexicalFeature.GENDER);
if (Gender.FEMININE.Equals(genderValue))
{
pronoun = "she";
}
else if (Gender.MASCULINE.Equals(genderValue))
{
pronoun = "he";
}
}
// AG: createWord now returns WordElement; so we embed it in an
// inflected word element here
INLGElement element;
var proElement = phraseFactory.createWord(pronoun,
new LexicalCategory_PRONOUN());
if (proElement is WordElement)
{
element = new InflectedWordElement((WordElement)proElement);
element.setFeature(LexicalFeature.GENDER, ((WordElement)proElement).getFeature(LexicalFeature.GENDER));
// Ehud - also copy over person
element.setFeature(Feature.PERSON.ToString(), ((WordElement)proElement).getFeature(Feature.PERSON.ToString()));
}
else
{
element = proElement;
}
element.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(),
DiscourseFunction.SPECIFIER);
element.setFeature(Feature.POSSESSIVE.ToString(), phrase
.getFeature(Feature.POSSESSIVE.ToString()));
element
.setFeature(Feature.NUMBER.ToString(), phrase.getFeature(Feature.NUMBER.ToString()));
if (phrase.hasFeature(InternalFeature.DISCOURSE_FUNCTION.ToString()))
{
element.setFeature(InternalFeature.DISCOURSE_FUNCTION.ToString(), phrase
.getFeature(InternalFeature.DISCOURSE_FUNCTION.ToString()));
}
return(element);
}
