content: /*
   * Copyright 2020 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.common.jna.type;
  
  import com.alibaba.graphscope.common.jna.IrTypeMapper;
  import com.sun.jna.Pointer;
  import com.sun.jna.Structure;
  
  import org.apache.commons.lang3.StringUtils;
  
  @Structure.FieldOrder({"code", "msg"})
  public class FfiResult extends Structure {
      public FfiResult() {
          super(IrTypeMapper.INSTANCE);
      }
  
      public static class ByValue extends FfiResult implements Structure.ByValue {}
  
      public ResultCode code;
      public Pointer msg;
      private FfiString ffiStr;
  
      public String getMsg() {
          return ffiStr == null ? StringUtils.EMPTY : ffiStr.getValue();
      }
  
      @Override
      public void read() {
          super.read();
          if (ffiStr == null) {
              ffiStr = new FfiString(msg);
          }
      }
  
      @Override
      public String toString() {
          return "FfiResult{" + "code=" + code + ", msg='" + getMsg() + '\'' + '}';
      }
  }
  