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.calcite.linq4j.tree;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.lang.reflect.Type;
  import java.util.List;
  import java.util.Objects;
  
  /**
   * Represents creating a new array and possibly initializing the elements of the
   * new array.
   */
  public class NewArrayExpression extends Expression {
    public final int dimension;
    public final @Nullable Expression bound;
    public final @Nullable List<Expression> expressions;
    /** Cached hash code for the expression. */
    private int hash;
  
    public NewArrayExpression(Type type, int dimension, @Nullable Expression bound,
        @Nullable List<Expression> expressions) {
      super(ExpressionType.NewArrayInit, Types.arrayType(type, dimension));
      this.dimension = dimension;
      this.bound = bound;
      this.expressions = expressions;
    }
  
    @Override public Expression accept(Shuttle shuttle) {
      shuttle = shuttle.preVisit(this);
      List<Expression> expressions =
          this.expressions == null
              ? null
              : Expressions.acceptExpressions(this.expressions, shuttle);
      Expression bound =
          this.bound == null
              ? null
              : this.bound.accept(shuttle);
      return shuttle.visit(this, dimension, bound, expressions);
    }
  
    @Override public <R> R accept(Visitor<R> visitor) {
      return visitor.visit(this);
    }
  
    @Override void accept(ExpressionWriter writer, int lprec, int rprec) {
      writer.append("new ").append(Types.getComponentTypeN(type));
      for (int i = 0; i < dimension; i++) {
        if (i == 0 && bound != null) {
          writer.append('[').append(bound).append(']');
        } else {
          writer.append("[]");
        }
      }
      if (expressions != null) {
        writer.list(" {\n", ",\n", "}", expressions);
      }
    }
  
    @Override public boolean equals(@Nullable Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
      if (!super.equals(o)) {
        return false;
      }
  
      NewArrayExpression that = (NewArrayExpression) o;
  
      if (dimension != that.dimension) {
        return false;
      }
      if (bound != null ? !bound.equals(that.bound) : that.bound != null) {
        return false;
      }
      if (expressions != null ? !expressions.equals(that.expressions) : that
          .expressions != null) {
        return false;
      }
  
      return true;
    }
  
    @Override public int hashCode() {
      int result = hash;
      if (result == 0) {
        result = Objects.hash(nodeType, type, dimension, bound, expressions);
        if (result == 0) {
          result = 1;
        }
        hash = result;
      }
      return result;
    }
  }
  