AbstractOperator.java
/*
* #%L
* prolobjectlink-jpi
* %%
* Copyright (C) 2019 Prolobjectlink Project
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
package io.github.prolobjectlink.prolog;
/**
* Partial implementation of {@link PrologOperator}.
*
* @author Jose Zalacain
* @since 1.0
*/
public abstract class AbstractOperator implements PrologOperator {
private final int priority;
private final String specifier;
private final String operator;
public AbstractOperator(int priority, String specifier, String operator) {
this.priority = priority;
this.specifier = specifier;
this.operator = operator;
}
public final int getPriority() {
return priority;
}
public final String getSpecifier() {
return specifier;
}
public final String getOperator() {
return operator;
}
@Override
public final String toString() {
return "op(" + priority + "," + specifier + "," + operator + ")";
}
@Override
public final int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((operator == null) ? 0 : operator.hashCode());
result = prime * result + priority;
result = prime * result + ((specifier == null) ? 0 : specifier.hashCode());
return result;
}
@Override
public final boolean equals(Object object) {
if (this == object)
return true;
if (object == null)
return false;
if (getClass() != object.getClass())
return false;
AbstractOperator other = (AbstractOperator) object;
if (operator == null) {
if (other.operator != null)
return false;
} else if (!operator.equals(other.operator)) {
return false;
}
if (priority != other.priority)
return false;
if (specifier == null) {
if (other.specifier != null)
return false;
} else if (!specifier.equals(other.specifier)) {
return false;
}
return true;
}
public int compareTo(PrologOperator o) {
if (operator != null) {
if (priority > o.getPriority()) {
return 1;
} else if (priority < o.getPriority()) {
return -1;
}
}
return 0;
}
}