| using Lucene.Net.Diagnostics; |
| using BitSet = J2N.Collections.BitSet; |
| |
| namespace Lucene.Net.Util.Packed |
| { |
| /* |
| * 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. |
| */ |
| |
| using DocIdSetIterator = Lucene.Net.Search.DocIdSetIterator; |
| |
| public class TestEliasFanoDocIdSet : BaseDocIdSetTestCase<EliasFanoDocIdSet> |
| { |
| public override EliasFanoDocIdSet CopyOf(BitSet bs, int numBits) |
| { |
| EliasFanoDocIdSet set = new EliasFanoDocIdSet((int)bs.Cardinality, numBits - 1); |
| set.EncodeFromDisi(new DocIdSetIteratorAnonymousClass(bs, numBits)); |
| return set; |
| } |
| |
| private class DocIdSetIteratorAnonymousClass : DocIdSetIterator |
| { |
| private readonly BitSet bs; |
| private readonly int numBits; |
| |
| public DocIdSetIteratorAnonymousClass(BitSet bs, int numBits) |
| { |
| this.bs = bs; |
| this.numBits = numBits; |
| doc = -1; |
| } |
| |
| internal int doc; |
| |
| public override int NextDoc() |
| { |
| doc = bs.NextSetBit(doc + 1); |
| if (doc == -1) |
| { |
| doc = NO_MORE_DOCS; |
| } |
| if (Debugging.AssertsEnabled) Debugging.Assert(doc < numBits); |
| return doc; |
| } |
| |
| public override int DocID => doc; |
| |
| public override long GetCost() |
| { |
| return bs.Cardinality; |
| } |
| |
| public override int Advance(int target) |
| { |
| return SlowAdvance(target); |
| } |
| } |
| } |
| } |