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 a constructor call.
   *
   * <p>If {@link #memberDeclarations} is not null (even if empty) represents
   * an anonymous class.
   */
  public class NewExpression extends Expression {
    @SuppressWarnings("HidingField")
    public final Type type;
    public final List<Expression> arguments;
    public final @Nullable List<MemberDeclaration> memberDeclarations;
    /** Cached hash code for the expression. */
    private int hash;
  
    public NewExpression(Type type, List<Expression> arguments,
        @Nullable List<MemberDeclaration> memberDeclarations) {
      super(ExpressionType.New, type);
      this.type = type;
      this.arguments = arguments;
      this.memberDeclarations = memberDeclarations;
    }
  
    @Override public Expression accept(Shuttle shuttle) {
      shuttle = shuttle.preVisit(this);
      final List<Expression> arguments =
          Expressions.acceptExpressions(this.arguments, shuttle);
      final List<MemberDeclaration> memberDeclarations =
          this.memberDeclarations == null
              ? null
              : Expressions.acceptMemberDeclarations(this.memberDeclarations,
                  shuttle);
      return shuttle.visit(this, arguments, memberDeclarations);
    }
  
    @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(type).list("(\n", ",\n", ")", arguments);
      if (memberDeclarations != null) {
        writer.list("{\n", "", "}", memberDeclarations);
      }
    }
  
    @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;
      }
  
      NewExpression that = (NewExpression) o;
  
      if (arguments != null ? !arguments.equals(that.arguments)
          : that.arguments != null) {
        return false;
      }
      if (memberDeclarations
          != null ? !memberDeclarations.equals(that.memberDeclarations)
          : that.memberDeclarations != null) {
        return false;
      }
      if (!type.equals(that.type)) {
        return false;
      }
  
      return true;
    }
  
    @Override public int hashCode() {
      int result = hash;
      if (result == 0) {
        result =
            Objects.hash(nodeType, super.type, type, arguments, memberDeclarations);
        if (result == 0) {
          result = 1;
        }
        hash = result;
      }
      return result;
    }
  }
  