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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;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Simple implementation of {@link InflectionAffix}
*
* @author EVE
*
*/
public class SimpleInflectionAffix implements InflectionAffix {
private static final String TOSTRING_FMT = "SimpleInflectionAffix [affixTemplate=%s, affixMatcher=%s]";
private String affixTemplate;
private Pattern affixMatcher;
/**
* Create a new inflection affix.
*
* @param affixTemplate
* The template for applying the affix, Should be a
* printf-style format string with a single string blank.
*
* @param affixMatcher
* The regular expression that matches the affix on
* strings. The 'stem' or word should be placed in a
* named capturing group named 'stem'.
*/
public SimpleInflectionAffix(String affixTemplate, Pattern affixMatcher) {
this.affixTemplate = affixTemplate;
this.affixMatcher = affixMatcher;
}
@Override
public boolean hasAffix(String word) {
return affixMatcher.matcher(word).matches();
}
@Override
public String deaffix(String word) {
Matcher matcher = affixMatcher.matcher(word);
matcher.matches();
return matcher.group("stem");
}
@Override
public String affix(String word) {
return String.format(affixTemplate, word);
}
@Override
public String toString() {
return String.format(TOSTRING_FMT, affixTemplate, affixMatcher);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((affixMatcher == null) ? 0 : affixMatcher.hashCode());
result = prime * result + ((affixTemplate == null) ? 0 : affixTemplate.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if(this == obj) return true;
if(obj == null) return false;
if(!(obj instanceof SimpleInflectionAffix)) return false;
SimpleInflectionAffix other = (SimpleInflectionAffix) obj;
if(affixTemplate == null) {
if(other.affixTemplate != null) return false;
} else if(!affixTemplate.equals(other.affixTemplate)) return false;
if(affixMatcher == null) {
if(other.affixMatcher != null) return false;
} else if(!affixMatcher.equals(other.affixMatcher)) return false;
return true;
}
}
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