com.google.uzaygezen.core.BigIntegerContent.java Source code

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Here is the source code for com.google.uzaygezen.core.BigIntegerContent.java

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/*
 * Copyright (C) 2012 Daniel Aioanei.
 *
 * 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 com.google.uzaygezen.core;

import java.math.BigInteger;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import com.google.common.base.Preconditions;
import com.google.uzaygezen.core.Content;

/**
 * @author Richard Garris
 * @author Daniel Aioanei
 */
public class BigIntegerContent implements Content<BigIntegerContent> {

    private BigInteger value;

    public BigIntegerContent(BigInteger v) {
        Preconditions.checkArgument(v.signum() >= 0);
        this.value = v;
    }

    public BigInteger value() {
        return value;
    }

    @Override
    public void add(BigIntegerContent other) {
        value = value.add(other.value);
    }

    @Override
    public boolean isZero() {
        return value.signum() == 0;
    }

    @Override
    public int compareTo(BigIntegerContent o) {
        return value.compareTo(o.value);
    }

    @Override
    public void shiftRight(int n) {
        value = value.shiftRight(n);
    }

    @Override
    public boolean isOne() {
        return value.equals(BigInteger.ONE);
    }

    @Override
    public int hashCode() {
        return ~value.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof BigIntegerContent)) {
            return false;
        }
        BigIntegerContent other = (BigIntegerContent) obj;
        return value.equals(other.value);
    }

    @Override
    public BigIntegerContent clone() {
        return new BigIntegerContent(value);
    }

    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
    }
}