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.beam.runners.core.triggers;
  
  import java.util.BitSet;
  
  /** A {@link FinishedTriggers} implementation based on an underlying {@link BitSet}. */
  public class FinishedTriggersBitSet implements FinishedTriggers {
  
    private final BitSet bitSet;
  
    private FinishedTriggersBitSet(BitSet bitSet) {
      this.bitSet = bitSet;
    }
  
    public static FinishedTriggersBitSet emptyWithCapacity(int capacity) {
      return new FinishedTriggersBitSet(new BitSet(capacity));
    }
  
    public static FinishedTriggersBitSet fromBitSet(BitSet bitSet) {
      return new FinishedTriggersBitSet(bitSet);
    }
  
    /** Returns the underlying {@link BitSet} for this {@link FinishedTriggersBitSet}. */
    public BitSet getBitSet() {
      return bitSet;
    }
  
    @Override
    public boolean isFinished(ExecutableTriggerStateMachine trigger) {
      return bitSet.get(trigger.getTriggerIndex());
    }
  
    @Override
    public void setFinished(ExecutableTriggerStateMachine trigger, boolean value) {
      bitSet.set(trigger.getTriggerIndex(), value);
    }
  
    @Override
    public void clearRecursively(ExecutableTriggerStateMachine trigger) {
      bitSet.clear(trigger.getTriggerIndex(), trigger.getFirstIndexAfterSubtree());
    }
  
    @Override
    public FinishedTriggersBitSet copy() {
      return new FinishedTriggersBitSet((BitSet) bitSet.clone());
    }
  }
  