content: package org.apache.lucene.search.spans;
  /**
   * 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.
   */
  
  
  import org.apache.lucene.util.ToStringUtils;
  
  import java.io.IOException;
  
  
  /**
   * Checks to see if the {@link #getMatch()} lies between a start and end position
   *
   * @see org.apache.lucene.search.spans.SpanFirstQuery for a derivation that is optimized for the case where start position is 0
   */
  public class SpanPositionRangeQuery extends SpanPositionCheckQuery {
    protected int start = 0;
    protected int end;
  
    public SpanPositionRangeQuery(SpanQuery match, int start, int end) {
      super(match);
      this.start = start;
      this.end = end;
    }
  
  
    @Override
    protected AcceptStatus acceptPosition(Spans spans) throws IOException {
      assert spans.start() != spans.end();
      if (spans.start() >= end)
        return AcceptStatus.NO_AND_ADVANCE;
      else if (spans.start() >= start && spans.end() <= end)
        return AcceptStatus.YES;
      else
        return AcceptStatus.NO;
    }
  
  
    /**
     * @return The minimum position permitted in a match
     */
    public int getStart() {
      return start;
    }
  
    /**
     * @return the maximum end position permitted in a match.
     */
    public int getEnd() {
      return end;
    }
  
    @Override
    public String toString(String field) {
      StringBuilder buffer = new StringBuilder();
      buffer.append("spanPosRange(");
      buffer.append(match.toString(field));
      buffer.append(", ").append(start).append(", ");
      buffer.append(end);
      buffer.append(")");
      buffer.append(ToStringUtils.boost(getBoost()));
      return buffer.toString();
    }
  
    @Override
    public Object clone() {
      SpanPositionRangeQuery result = new SpanPositionRangeQuery((SpanQuery) match.clone(), start, end);
      result.setBoost(getBoost());
      return result;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (!(o instanceof SpanPositionRangeQuery)) return false;
  
      SpanPositionRangeQuery other = (SpanPositionRangeQuery)o;
      return this.end == other.end && this.start == other.start
           && this.match.equals(other.match)
           && this.getBoost() == other.getBoost();
    }
  
    @Override
    public int hashCode() {
      int h = match.hashCode();
      h ^= (h << 8) | (h >>> 25);  // reversible
      h ^= Float.floatToRawIntBits(getBoost()) ^ end ^ start;
      return h;
    }
  
  }