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.parser.visitor;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.core.tree.AliasedName;
  import com.aliyun.fastmodel.core.tree.Comment;
  import com.aliyun.fastmodel.core.tree.Node;
  import com.aliyun.fastmodel.core.tree.Property;
  import com.aliyun.fastmodel.core.tree.statement.element.CreateElement;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.CreateMeasureUnit;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.DropMeasureUnit;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.RenameMeasureUnit;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.SetMeasureUnitAlias;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.SetMeasureUnitComment;
  import com.aliyun.fastmodel.core.tree.statement.measure.unit.SetMeasureUnitProperties;
  import com.aliyun.fastmodel.parser.AstBuilder;
  import com.aliyun.fastmodel.parser.annotation.SubVisitor;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.CreateMeasureUnitContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.DropMeasureUnitContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.RenameMeasureUnitContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetMeasureUnitAliasContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetMeasureUnitCommentContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetMeasureUnitPropertiesContext;
  
  /**
   * Desc:
   *
   * @author panguanjing
   * @date 2021/4/8
   */
  @SubVisitor
  public class MeasureUnitVisitor extends AstBuilder {
      @Override
      public Node visitCreateMeasureUnit(CreateMeasureUnitContext ctx) {
          List<Property> properties = getProperties(ctx.setProperties());
          Comment comment = visitIfPresent(ctx.comment(), Comment.class).orElse(null);
          return new CreateMeasureUnit(
              CreateElement.builder()
                  .qualifiedName(getQualifiedName(ctx.qualifiedName()))
                  .properties(properties)
                  .comment(comment)
                  .notExists(ctx.ifNotExists() != null)
                  .createOrReplace(ctx.replace() != null)
                  .build()
          );
      }
  
      @Override
      public Node visitRenameMeasureUnit(RenameMeasureUnitContext ctx) {
          return new RenameMeasureUnit(
              getQualifiedName(ctx.qualifiedName()),
              getQualifiedName(ctx.alterStatementSuffixRename().qualifiedName())
          );
      }
  
      @Override
      public Node visitSetMeasureUnitComment(SetMeasureUnitCommentContext ctx) {
          return new SetMeasureUnitComment(getQualifiedName(ctx.qualifiedName()),
              (Comment)visit(ctx.alterStatementSuffixSetComment())
          );
      }
  
      @Override
      public Node visitSetMeasureUnitProperties(SetMeasureUnitPropertiesContext ctx) {
          return new SetMeasureUnitProperties(
              getQualifiedName(ctx.qualifiedName()),
              getProperties(ctx.setProperties())
          );
      }
  
      @Override
      public Node visitDropMeasureUnit(DropMeasureUnitContext ctx) {
          return new DropMeasureUnit(getQualifiedName(ctx.qualifiedName()));
      }
  
      @Override
      public Node visitSetMeasureUnitAlias(SetMeasureUnitAliasContext ctx) {
          return new SetMeasureUnitAlias(getQualifiedName(ctx.qualifiedName()), (AliasedName)visit(ctx.setAliasedName()));
      }
  }
  