/*
 * Copyright 2016 Miroslav Janíček
 *
 * 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 org.classdump.luna.parser.ast;

import java.util.Objects;

public class WhileStatement extends BodyStatement {

  private final Expr condition;
  private final Block block;

  public WhileStatement(Attributes attr, Expr condition, Block block) {
    super(attr);
    this.condition = Objects.requireNonNull(condition);
    this.block = Objects.requireNonNull(block);
  }

  public Expr condition() {
    return condition;
  }

  public Block block() {
    return block;
  }

  public WhileStatement update(Expr condition, Block block) {
    if (this.condition.equals(condition) && this.block.equals(block)) {
      return this;
    } else {
      return new WhileStatement(attributes(), condition, block);
    }
  }

  @Override
  public BodyStatement accept(Transformer tf) {
    return tf.transform(this);
  }

}
