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Offset.java
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128 lines (115 loc) · 3.51 KB
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/**
* 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.
*
* Copyright 2012-2014 the original author or authors.
*/
package org.assertj.core.data;
import static org.assertj.core.util.Objects.*;
import static org.assertj.core.util.Preconditions.checkNotNull;
import java.math.BigDecimal;
/**
* A positive offset.
*
* @param <T> the type of the offset value.
*
* @author Alex Ruiz
* @author Yvonne Wang
*/
public class Offset<T extends Number> {
public final T value;
/**
* Creates a new {@link Offset}.
*
* @param value the value of the offset.
* @return the created {@code Offset}.
* @throws NullPointerException if the given value is {@code null}.
* @throws IllegalArgumentException if the given value is negative.
*/
public static Offset<Double> offset(Double value) {
checkNotNull(value);
if (value < 0d) {
throw valueNotPositive();
}
return new Offset<>(value);
}
/**
* Creates a new {@link Offset}.
*
* @param value the value of the offset.
* @return the created {@code Offset}.
* @throws NullPointerException if the given value is {@code null}.
* @throws IllegalArgumentException if the given value is negative.
*/
public static Offset<Float> offset(Float value) {
checkNotNull(value);
if (value < 0f) {
throw valueNotPositive();
}
return new Offset<>(value);
}
/**
* Creates a new {@link Offset}.
*
* @param value the value of the offset.
* @return the created {@code Offset}.
* @throws NullPointerException if the given value is {@code null}.
* @throws IllegalArgumentException if the given value is negative.
*/
public static Offset<Integer> offset(Integer value) {
checkNotNull(value);
if (value < 0) {
throw valueNotPositive();
}
return new Offset<>(value);
}
/**
* Creates a new {@link Offset}.
*
* @param value the value of the offset.
* @return the created {@code Offset}.
* @throws NullPointerException if the given value is {@code null}.
* @throws IllegalArgumentException if the given value is negative.
*/
public static Offset<BigDecimal> offset(final BigDecimal value) {
checkNotNull(value);
if (value.compareTo(BigDecimal.ZERO) < 0) throw valueNotPositive();
return new Offset<>(value);
}
private static IllegalArgumentException valueNotPositive() {
return new IllegalArgumentException("The value of the offset should be greater than zero");
}
private Offset(T value) {
this.value = value;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
Offset<?> other = (Offset<?>) obj;
return areEqual(value, other.value);
}
@Override
public int hashCode() {
int result = 1;
result = HASH_CODE_PRIME * result + hashCodeFor(value);
return result;
}
@Override
public String toString() {
return String.format("%s[value=%s]", getClass().getSimpleName(), value);
}
}