| using Lucene.Net.Util; |
| using System; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Search.Suggest |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// A <seealso cref="InputEnumerator"/> over a sequence of <seealso cref="Input"/>s. |
| /// </summary> |
| public sealed class InputArrayEnumerator : IInputEnumerator |
| { |
| private readonly IEnumerator<Input> i; |
| private readonly bool hasPayloads; |
| private readonly bool hasContexts; |
| private bool first; |
| private Input current; |
| private readonly BytesRef spare = new BytesRef(); |
| |
| public InputArrayEnumerator(IEnumerator<Input> i) |
| { |
| this.i = i; |
| if (i.MoveNext()) |
| { |
| current = i.Current; |
| first = true; |
| this.hasPayloads = current.hasPayloads; |
| this.hasContexts = current.hasContexts; |
| } |
| else |
| { |
| this.hasPayloads = false; |
| this.hasContexts = false; |
| } |
| } |
| |
| public InputArrayEnumerator(Input[] i) |
| : this((IEnumerable<Input>)i) |
| { |
| } |
| public InputArrayEnumerator(IEnumerable<Input> i) |
| : this(i.GetEnumerator()) |
| { |
| } |
| |
| public long Weight => current.v; |
| |
| public BytesRef Current { get; private set; } |
| |
| public bool MoveNext() |
| { |
| // LUCENENET NOTE: We moved the cursor when |
| // the instance was created. Make sure we don't |
| // move it again until the second call to Next(). |
| if (first && current != null) |
| { |
| first = false; |
| } |
| else if (i.MoveNext()) |
| { |
| current = i.Current; |
| } |
| else |
| { |
| Current = null; |
| return false; |
| } |
| |
| spare.CopyBytes(current.term); |
| Current = spare; |
| return true; |
| } |
| |
| public BytesRef Payload => current.payload; |
| |
| public bool HasPayloads => hasPayloads; |
| |
| public IComparer<BytesRef> Comparer => null; |
| |
| public ICollection<BytesRef> Contexts => current.contexts; |
| |
| public bool HasContexts => hasContexts; |
| } |
| } |