content: /*
   * Copyright 2021 Alibaba Group Holding Limited.
   *
   * 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.alibaba.graphscope.ds;
  
  import static com.alibaba.graphscope.utils.CppClassName.GRAPE_DEST_LIST;
  import static com.alibaba.graphscope.utils.CppHeaderName.GRAPE_ADJ_LIST_H;
  
  import com.alibaba.fastffi.CXXHead;
  import com.alibaba.fastffi.CXXPointer;
  import com.alibaba.fastffi.CXXPointerRange;
  import com.alibaba.fastffi.FFIGen;
  import com.alibaba.fastffi.FFIGetter;
  import com.alibaba.fastffi.FFIPointer;
  import com.alibaba.fastffi.FFITypeAlias;
  
  /**
   * Java Wrapper for <a
   * href="https://github.com/alibaba/libgrape-lite/blob/master/grape/graph/adj_list.h">grape::DestList
   * </a>, contains two fid pointer, the begin and the end.
   */
  @FFIGen
  @CXXHead(GRAPE_ADJ_LIST_H)
  @FFITypeAlias(GRAPE_DEST_LIST)
  public interface DestList extends FFIPointer, CXXPointer, CXXPointerRange<FidPointer> {
  
      /**
       * Fetch the begin fid pointer.
       *
       * @return fetch the end fid pointer.
       */
      @FFIGetter
      FidPointer begin();
  
      /**
       * Fetch the end fid pointer
       *
       * @return the end fid pointer.
       */
      @FFIGetter
      FidPointer end();
  
      /**
       * Check empty DestList or not.
       *
       * @return empty or not.
       */
      default boolean empty() {
          return begin().equals(end());
      }
  
      /**
       * Check if not empty.
       *
       * @return true for not empty.
       */
      default boolean notEmpty() {
          return !empty();
      }
  }
  