content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.asterix.lang.sqlpp.rewrites.visitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  import org.apache.asterix.lang.common.base.Expression;
  import org.apache.asterix.lang.common.base.ILangExpression;
  import org.apache.asterix.lang.common.expression.CallExpr;
  import org.apache.asterix.lang.sqlpp.util.FunctionMapUtil;
  import org.apache.asterix.lang.sqlpp.visitor.base.AbstractSqlppSimpleExpressionVisitor;
  
  /**
   * This visitor rewrites several variable-arg user-facing functions to their coressponding
   * AsterixDB internal functions that takes a list as the input.
   */
  public class SqlppListInputFunctionRewriteVisitor extends AbstractSqlppSimpleExpressionVisitor {
  
      @Override
      public Expression visit(CallExpr callExpr, ILangExpression arg) throws CompilationException {
          List<Expression> newExprList = new ArrayList<>();
          for (Expression expr : callExpr.getExprList()) {
              newExprList.add(expr.accept(this, arg));
          }
          callExpr.setExprList(newExprList);
          FunctionMapUtil.normalizedListInputFunctions(callExpr);
          return callExpr;
      }
  }
  