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/*
* (C) Copyright 2017 Benjamin Culkin.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package bjc.inflexion.nouns;
/**
* Implementation of {@link NounInflection} for nouns matched by a regular
* expression.
*
* @author EVE
*
*/
public class CategoricalNounInflection implements NounInflection {
/* The toString format. */
private static final String TOSTRING_FMT
= "CategoricalNounInflection [singular=%s, modernPlural=%s, classicalPlural=%s]";
/* The affix for a singular noun. */
private final InflectionAffix singular;
/* The affix for a modern plural. */
private final InflectionAffix modernPlural;
/* The affix for a classical plural. */
private final InflectionAffix classicalPlural;
/**
* Create a new categorical inflection.
*
* @param singlar
* The affix for the singular form.
*
* @param modrnPlural
* The affix for the modern plural.
*
* @param classiclPlural
* The affix for the classical plural.
*/
public CategoricalNounInflection(final InflectionAffix singlar,
final InflectionAffix modrnPlural, final InflectionAffix classiclPlural) {
if (singlar == null) {
throw new NullPointerException("Singular form must not be null");
} else if (modrnPlural == null && classiclPlural == null) {
throw new NullPointerException(
"One of modern/classical plural forms must not be null");
}
singular = singlar;
modernPlural = modrnPlural;
classicalPlural = classiclPlural;
}
@Override
public boolean matches(final String noun) {
if (singular.hasAffix(noun))
return true;
else if (modernPlural != null && modernPlural.hasAffix(noun))
return true;
else if (classicalPlural != null && classicalPlural.hasAffix(noun))
return true;
else
return false;
}
@Override
public boolean isSingular(final String noun) {
if (singular.hasAffix(noun)) {
return true;
} else if (matchesPlural(noun)) {
return false;
} else {
final String msg
= String.format("Noun '%s' doesn't belong to this inflection", noun);
throw new InflectionException(msg);
}
}
@Override
public boolean isPlural(final String noun) {
if (singular.hasAffix(noun)) {
return false;
} else if (matchesPlural(noun)) {
return true;
} else {
final String msg
= String.format("Noun '%s' doesn't belong to this inflection", noun);
throw new InflectionException(msg);
}
}
@Override
public String singularize(final String plural) {
if (singular.hasAffix(plural)) {
return plural;
} else if (modernPlural != null && modernPlural.hasAffix(plural)) {
return singular.affix(modernPlural.deaffix(plural));
} else if (classicalPlural != null && classicalPlural.hasAffix(plural)) {
return singular.affix(classicalPlural.deaffix(plural));
} else {
final String msg = String
.format("Noun '%s' doesn't belong to this (%s) inflection", plural, this);
throw new InflectionException(msg);
}
}
@Override
public String pluralize(final String singlar) {
if (singular.hasAffix(singlar)) {
if (modernPlural == null)
return classicalPlural.affix(singular.deaffix(singlar));
return modernPlural.affix(singular.deaffix(singlar));
} else if (matchesPlural(singlar)) {
return singlar;
} else {
final String msg = String
.format("Noun '%s' doesn't belong to this (%s) inflection", singlar, this);
throw new InflectionException(msg);
}
}
/* Check if a string matches a plural form. */
private boolean matchesPlural(final String noun) {
final boolean hasModernPlural
= modernPlural != null && modernPlural.hasAffix(noun);
return hasModernPlural
|| classicalPlural != null && classicalPlural.hasAffix(noun);
}
@Override
public String toString() {
return String.format(TOSTRING_FMT, singular, modernPlural, classicalPlural);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ (classicalPlural == null ? 0 : classicalPlural.hashCode());
result = prime * result + (modernPlural == null ? 0 : modernPlural.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof CategoricalNounInflection))
return false;
final CategoricalNounInflection other = (CategoricalNounInflection) obj;
if (classicalPlural == null) {
if (other.classicalPlural != null)
return false;
} else if (!classicalPlural.equals(other.classicalPlural))
return false;
if (modernPlural == null) {
if (other.modernPlural != null)
return false;
} else if (!modernPlural.equals(other.modernPlural))
return false;
return true;
}
@Override
public String pluralizeModern(final String singlar) {
if (modernPlural == null)
return pluralizeClassical(singlar);
String actSinglar = singlar;
if (isPlural(singlar)) {
actSinglar = singularize(singlar);
}
return modernPlural.affix(singular.deaffix(actSinglar));
}
@Override
public String pluralizeClassical(final String singlar) {
if (classicalPlural == null)
return pluralizeModern(singlar);
String actSinglar = singlar;
if (isPlural(singlar)) {
actSinglar = singularize(singlar);
}
return classicalPlural.affix(singular.deaffix(actSinglar));
}
}
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