| using System; |
| using System.Runtime.CompilerServices; |
| |
| namespace Lucene.Net.Util.Fst |
| { |
| /* |
| * 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. |
| */ |
| |
| // TODO: can we use just ByteArrayDataInput...? need to |
| // add a .skipBytes to DataInput.. hmm and .setPosition |
| |
| /// <summary> |
| /// Reads from a single <see cref="T:byte[]"/>. </summary> |
| internal sealed class ForwardBytesReader : FST.BytesReader |
| { |
| private readonly byte[] bytes; |
| private int pos; |
| |
| public ForwardBytesReader(byte[] bytes) |
| { |
| this.bytes = bytes; |
| } |
| |
| [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| public override byte ReadByte() |
| { |
| return bytes[pos++]; |
| } |
| |
| [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| public override void ReadBytes(byte[] b, int offset, int len) |
| { |
| Array.Copy(bytes, pos, b, offset, len); |
| pos += len; |
| } |
| |
| [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| public override void SkipBytes(int count) |
| { |
| pos += count; |
| } |
| |
| public override long Position |
| { |
| get => pos; |
| set => this.pos = (int)value; |
| } |
| |
| public override bool IsReversed => false; |
| } |
| } |