plusone-commons/src/main/java/xyz/zhouxy/plusone/commons/base/DoubleRef.java

/*
 * Copyright 2024 the original author or 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
 *
 *      https://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 xyz.zhouxy.plusone.commons.base;

import java.util.function.DoublePredicate;
import java.util.function.DoubleUnaryOperator;

import com.google.common.annotations.Beta;

import xyz.zhouxy.plusone.commons.annotation.StaticFactoryMethod;

@Beta
public final class DoubleRef {

    private double value;

    public DoubleRef(double value) {
        this.value = value;
    }

    @StaticFactoryMethod(DoubleRef.class)
    public static DoubleRef of(double value) {
        return new DoubleRef(value);
    }

    public double getValue() {
        return value;
    }

    public void setValue(double value) {
        this.value = value;
    }

    public void transformValue(DoubleUnaryOperator operator) {
        this.value = operator.applyAsDouble(this.value);
    }

    public boolean checkValue(DoublePredicate predicate) {
        return predicate.test(this.value);
    }

    @Override
    public String toString() {
        return String.format("DoubleRef[%s]", value);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        long temp;
        temp = Double.doubleToLongBits(value);
        result = prime * result + (int) (temp ^ (temp >>> 32));
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        final DoubleRef other = (DoubleRef) obj;
        return Double.doubleToLongBits(value) == Double.doubleToLongBits(other.value);
    }

}