content: /*
   * Copyright 2021-2022 Alibaba Group Holding Ltd.
   *
   *    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.aliyun.fastmodel.core.tree.util;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.core.tree.datatype.BaseDataType;
  import com.aliyun.fastmodel.core.tree.datatype.DataTypeParameter;
  import com.aliyun.fastmodel.core.tree.datatype.GenericDataType;
  import com.aliyun.fastmodel.core.tree.datatype.IDataTypeName;
  import com.aliyun.fastmodel.core.tree.expr.Identifier;
  import com.google.common.collect.ImmutableList;
  
  /**
   * DataType Util
   *
   * @author panguanjing
   * @date 2020/11/12
   */
  public class DataTypeUtil {
      /**
       * simpleType 处理
       *
       * @param dataTypeEnums 标示名称
       * @param parameters    参数
       * @return {@link BaseDataType}
       */
      public static BaseDataType simpleType(IDataTypeName dataTypeEnums, DataTypeParameter... parameters) {
          Identifier identifier = new Identifier(dataTypeEnums.getValue(), false);
          if (parameters == null) {
              return new GenericDataType(identifier.getValue());
          }
          return new GenericDataType(identifier.getValue(), ImmutableList.copyOf(parameters));
      }
  
      /**
       * use dataType
       *
       * @param dataType
       * @param arguments
       * @return {@link BaseDataType}
       */
      public static BaseDataType simpleType(String dataType, List<DataTypeParameter> arguments) {
          return new GenericDataType(dataType, arguments);
      }
  
      /**
       * 转换下处理
       *
       * @param srcDataType
       * @param dataTypeEnums
       * @return
       * @throws UnsupportedOperationException 如果srcDataType不是GenericDataType
       */
      public static BaseDataType convert(BaseDataType srcDataType, IDataTypeName dataTypeEnums) {
          if (srcDataType instanceof GenericDataType) {
              return new GenericDataType(dataTypeEnums.getValue(),
                  ((GenericDataType)srcDataType).getArguments());
          }
          return srcDataType;
      }
  
  }
  