com.google.zxing.oned.rss.expanded.ExpandedPair Maven / Gradle / Ivy
/*
* Copyright (C) 2010 ZXing authors
*
* 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.
*/
/*
* These authors would like to acknowledge the Spanish Ministry of Industry,
* Tourism and Trade, for the support in the project TSI020301-2008-2
* "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
* Mobile Dynamic Environments", led by Treelogic
* ( http://www.treelogic.com/ ):
*
* http://www.piramidepse.com/
*/
package com.google.zxing.oned.rss.expanded;
import com.google.zxing.oned.rss.DataCharacter;
import com.google.zxing.oned.rss.FinderPattern;
/**
* @author Pablo Orduña, University of Deusto ([email protected])
*/
final class ExpandedPair {
private final boolean mayBeLast;
private final DataCharacter leftChar;
private final DataCharacter rightChar;
private final FinderPattern finderPattern;
ExpandedPair(DataCharacter leftChar,
DataCharacter rightChar,
FinderPattern finderPattern,
boolean mayBeLast) {
this.leftChar = leftChar;
this.rightChar = rightChar;
this.finderPattern = finderPattern;
this.mayBeLast = mayBeLast;
}
boolean mayBeLast() {
return this.mayBeLast;
}
DataCharacter getLeftChar() {
return this.leftChar;
}
DataCharacter getRightChar() {
return this.rightChar;
}
FinderPattern getFinderPattern() {
return this.finderPattern;
}
public boolean mustBeLast() {
return this.rightChar == null;
}
@Override
public String toString() {
return
"[ " + leftChar + " , " + rightChar + " : " +
(finderPattern == null ? "null" : finderPattern.getValue()) + " ]";
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ExpandedPair)) {
return false;
}
ExpandedPair that = (ExpandedPair) o;
return
equalsOrNull(leftChar, that.leftChar) &&
equalsOrNull(rightChar, that.rightChar) &&
equalsOrNull(finderPattern, that.finderPattern);
}
private static boolean equalsOrNull(Object o1, Object o2) {
return o1 == null ? o2 == null : o1.equals(o2);
}
@Override
public int hashCode() {
return hashNotNull(leftChar) ^ hashNotNull(rightChar) ^ hashNotNull(finderPattern);
}
private static int hashNotNull(Object o) {
return o == null ? 0 : o.hashCode();
}
}