/*
 * 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.paimon.codegen

import org.apache.paimon.types.DataType

/**
 * Describes a generated expression.
 *
 * @param resultTerm
 *   term to access the result of the expression
 * @param nullTerm
 *   boolean term that indicates if expression is null
 * @param code
 *   code necessary to produce resultTerm and nullTerm
 * @param resultType
 *   type of the resultTerm
 */
case class GeneratedExpression(
    resultTerm: String,
    nullTerm: String,
    code: String,
    resultType: DataType
)

object GeneratedExpression {
  val ALWAYS_NULL = "true"
  val NEVER_NULL = "false"
  val NO_CODE = ""
}
