com.hedera.node.app.statedumpers.legacy.EntityNum Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of app Show documentation
Hedera Application - Implementation
There is a newer version: 0.57.3
/*
 * Copyright (C) 2021-2024 Hedera Hashgraph, LLC
 *
 * 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.hedera.node.app.statedumpers.legacy;

import com.hederahashgraph.api.proto.java.AccountID;
import com.hederahashgraph.api.proto.java.TokenID;
import edu.umd.cs.findbugs.annotations.NonNull;

/**
 * An integer whose {@code hashCode()} implementation vastly reduces the risk of hash collisions in
 * structured data using this type, when compared to the {@code java.lang.Integer} boxed type.
 */
public class EntityNum implements Comparable {
    private static final long MASK_INT_AS_UNSIGNED_LONG = (1L << 32) - 1;
    public static final EntityNum MISSING_NUM = new EntityNum(0);

    private final int value;

    public static EntityNum fromTokenId(final TokenID grpc) {
        return fromLong(grpc.getTokenNum());
    }

    public static EntityNum fromAccountId(final AccountID grpc) {
        return fromLong(grpc.getAccountNum());
    }

    public static EntityNum fromLong(final long l) {
        final var value = codeFromNum(l);
        return new EntityNum(value);
    }

    private static int codeFromNum(long num) {
        return (int) num;
    }

    public EntityNum(final int value) {
        this.value = value;
    }

    public static EntityNum fromInt(final int i) {
        return new EntityNum(i);
    }

    public long longValue() {
        return numFromCode(value);
    }

    public int intValue() {
        return value;
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || EntityNum.class != o.getClass()) {
            return false;
        }

        final var that = (EntityNum) o;

        return this.value == that.value;
    }

    @Override
    public String toString() {
        return "EntityNum{" + "value=" + value + '}';
    }

    @Override
    public int compareTo(@NonNull final EntityNum that) {
        return Integer.compare(this.value, that.value);
    }

    private static long numFromCode(int code) {
        return code & MASK_INT_AS_UNSIGNED_LONG;
    }
}