content: /*
   * Copyright 2018 The Android Open Source Project
   *
   * 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.android.internal.telephony;
  
  import java.util.Objects;
  
  /**
   * Represent the version of underlying vendor HAL service.
   * @see <a href="https://source.android.com/devices/architecture/hidl/versioning">
   * HIDL versioning</a>.
   */
  public class HalVersion implements Comparable<HalVersion> {
  
      /** The HAL Version indicating that the version is unknown or invalid */
      public static final HalVersion UNKNOWN = new HalVersion(-1, -1);
  
      public final int major;
  
      public final int minor;
  
      public HalVersion(int major, int minor) {
          this.major = major;
          this.minor = minor;
      }
  
      @Override
      public int compareTo(HalVersion ver) {
          if (ver == null) {
              return 1;
          }
          if (this.major > ver.major) {
              return 1;
          } else if (this.major < ver.major) {
              return -1;
          } else if (this.minor > ver.minor) {
              return 1;
          } else if (this.minor < ver.minor) {
              return -1;
          }
          return 0;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(major, minor);
      }
  
      @Override
      public boolean equals(Object o) {
          return ((o instanceof HalVersion) && (o == this || compareTo((HalVersion) o) == 0));
      }
  
      /**
       * @return True if the version is greater than the compared version.
       */
      public boolean greater(HalVersion ver) {
          return compareTo(ver) > 0;
      }
  
      /**
       * @return True if the version is less than the compared version.
       */
      public boolean less(HalVersion ver) {
          return compareTo(ver) < 0;
      }
  
      /**
       * @return True if the version is greater than or equal to the compared version.
       */
      public boolean greaterOrEqual(HalVersion ver) {
          return greater(ver) || equals(ver);
      }
  
      /**
       * @return True if the version is less than or equal to the compared version.
       */
      public boolean lessOrEqual(HalVersion ver) {
          return less(ver) || equals(ver);
      }
  
      @Override
      public String toString() {
          return major + "." + minor;
      }
  }
  