| /* |
| * 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 |
| * |
| * https://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 System; |
| |
| namespace Avro.IO |
| { |
| /// <summary> |
| /// Base class for a <see cref="Parsing.Parser"/>-based |
| /// <see cref="Encoder"/>s. |
| /// </summary> |
| public abstract class ParsingEncoder : Encoder |
| { |
| /// <summary> |
| /// Tracks the number of items that remain to be written in the collections |
| /// (array or map). |
| /// </summary> |
| private long[] counts = new long[10]; |
| |
| /// <summary> |
| /// Position into the counts stack. |
| /// </summary> |
| protected int Pos = -1; |
| |
| /// <inheritdoc /> |
| public abstract void WriteNull(); |
| |
| /// <inheritdoc /> |
| public abstract void WriteBoolean(bool value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteInt(int value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteLong(long value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteFloat(float value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteDouble(double value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteBytes(byte[] value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteBytes(byte[] value, int offset, int length); |
| |
| /// <inheritdoc /> |
| public abstract void WriteString(string value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteEnum(int value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteArrayStart(); |
| |
| /// <inheritdoc /> |
| public abstract void WriteArrayEnd(); |
| |
| /// <inheritdoc /> |
| public abstract void WriteMapStart(); |
| |
| /// <inheritdoc /> |
| public abstract void WriteMapEnd(); |
| |
| /// <inheritdoc /> |
| public abstract void WriteUnionIndex(int value); |
| |
| /// <inheritdoc /> |
| public abstract void WriteFixed(byte[] data); |
| |
| /// <inheritdoc /> |
| public abstract void WriteFixed(byte[] data, int start, int len); |
| |
| /// <inheritdoc /> |
| public abstract void Flush(); |
| |
| /// <inheritdoc /> |
| public virtual void SetItemCount(long value) |
| { |
| if (counts[Pos] != 0) |
| { |
| throw new AvroTypeException("Incorrect number of items written. " + counts[Pos] + |
| " more required."); |
| } |
| |
| counts[Pos] = value; |
| } |
| |
| /// <inheritdoc /> |
| public virtual void StartItem() |
| { |
| counts[Pos]--; |
| } |
| |
| /// <summary> |
| /// Push a new collection on to the stack. |
| /// </summary> |
| protected void Push() |
| { |
| if (++Pos == counts.Length) |
| { |
| Array.Resize(ref counts, Pos + 10); |
| } |
| |
| counts[Pos] = 0; |
| } |
| |
| /// <summary> |
| /// Pop a new collection on to the stack. |
| /// </summary> |
| protected void Pop() |
| { |
| if (counts[Pos] != 0) |
| { |
| throw new AvroTypeException("Incorrect number of items written. " + counts[Pos] + " more required."); |
| } |
| |
| Pos--; |
| } |
| |
| /// <summary> |
| /// Returns the position into the stack. |
| /// </summary> |
| protected int Depth() |
| { |
| return Pos; |
| } |
| } |
| } |