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.expr.BaseExpression;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.CreateAdjunct;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.DropAdjunct;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.RenameAdjunct;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.SetAdjunctAlias;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.SetAdjunctComment;
  import com.aliyun.fastmodel.core.tree.statement.adjunct.SetAdjunctProperties;
  import com.aliyun.fastmodel.core.tree.statement.element.CreateElement;
  import com.aliyun.fastmodel.parser.AstBuilder;
  import com.aliyun.fastmodel.parser.annotation.SubVisitor;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.CreateAdjunctContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.DropAdjunctContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.RenameAdjunctContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetAdjunctAliasContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetAdjunctCommentContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetAdjunctPropertiesContext;
  
  /**
   * Desc:
   *
   * @author panguanjing
   * @date 2021/4/8
   */
  @SubVisitor
  public class AdjunctVisitor extends AstBuilder {
  
      @Override
      public Node visitCreateAdjunct(CreateAdjunctContext ctx) {
          List<Property> properties = getProperties(ctx.setProperties());
          BaseExpression baseExpression = visitIfPresent(ctx.expression(), BaseExpression.class).orElse(null);
          Comment comment = visitIfPresent(ctx.comment(), Comment.class).orElse(null);
          AliasedName aliasedName = visitIfPresent(ctx.alias(), AliasedName.class).orElse(null);
          CreateElement element = CreateElement.builder()
              .qualifiedName(getQualifiedName(ctx.qualifiedName()))
              .properties(properties)
              .comment(comment)
              .aliasedName(aliasedName)
              .createOrReplace(ctx.replace() != null)
              .build();
          return new CreateAdjunct(
              element, baseExpression
          );
      }
  
      @Override
      public Node visitRenameAdjunct(RenameAdjunctContext ctx) {
          return new RenameAdjunct(
              getQualifiedName(ctx.qualifiedName()),
              getQualifiedName((ctx.alterStatementSuffixRename().qualifiedName()))
          );
      }
  
      @Override
      public Node visitSetAdjunctComment(SetAdjunctCommentContext ctx) {
          return new SetAdjunctComment(
              getQualifiedName(ctx.qualifiedName()),
              (Comment)visit(ctx.alterStatementSuffixSetComment())
          );
      }
  
      @Override
      public Node visitSetAdjunctProperties(SetAdjunctPropertiesContext ctx) {
          List<Property> list = getProperties(ctx.setProperties());
          return new SetAdjunctProperties(getQualifiedName(ctx.qualifiedName()),
              list, visitIfPresent(ctx.expression(), BaseExpression.class).orElse(null)
          );
      }
  
      @Override
      public Node visitDropAdjunct(DropAdjunctContext ctx) {
          return new DropAdjunct(
              getQualifiedName(ctx.qualifiedName())
          );
      }
  
      @Override
      public Node visitSetAdjunctAlias(SetAdjunctAliasContext ctx) {
          return new SetAdjunctAlias(getQualifiedName(ctx.qualifiedName()),
              (AliasedName)visit(ctx.setAliasedName()));
      }
  
  }
  