| #region License |
| |
| /* |
| * 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. |
| */ |
| |
| #endregion |
| |
| using System.Collections; |
| using System.Collections.Generic; |
| using System.IO; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Gremlin.Net.Process.Traversal; |
| |
| namespace Gremlin.Net.Structure.IO.GraphBinary.Types |
| { |
| /// <summary> |
| /// A <see cref="P"/> serializer. |
| /// </summary> |
| public class PSerializer : SimpleTypeSerializer<P> |
| { |
| /// <summary> |
| /// Initializes a new instance of the <see cref="PSerializer" /> class. |
| /// </summary> |
| public PSerializer(DataType typeOfP) : base(typeOfP) |
| { |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task WriteValueAsync(P value, Stream stream, GraphBinaryWriter writer, |
| CancellationToken cancellationToken = default) |
| { |
| ICollection args = value.Value is ICollection ? value.Value : new List<object> {value.Value}; |
| |
| var argsLength = value.Other == null ? args.Count : args.Count + 1; |
| |
| await writer.WriteValueAsync(value.OperatorName, stream, false, cancellationToken).ConfigureAwait(false); |
| await writer.WriteValueAsync(argsLength, stream, false, cancellationToken).ConfigureAwait(false); |
| |
| foreach (var arg in args) |
| { |
| await writer.WriteAsync(arg, stream, cancellationToken).ConfigureAwait(false); |
| } |
| |
| if (value.Other != null) |
| { |
| await writer.WriteAsync(value.Other, stream, cancellationToken).ConfigureAwait(false); |
| } |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task<P> ReadValueAsync(Stream stream, GraphBinaryReader reader, |
| CancellationToken cancellationToken = default) |
| { |
| var operatorName = (string)await reader.ReadValueAsync<string>(stream, false, cancellationToken) |
| .ConfigureAwait(false); |
| var argsLength = |
| (int)await reader.ReadValueAsync<int>(stream, false, cancellationToken).ConfigureAwait(false); |
| |
| var args = new object[argsLength]; |
| for (var i = 0; i < argsLength; i++) |
| { |
| args[i] = await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| } |
| |
| if (operatorName == "and" || operatorName == "or") |
| { |
| |
| return new P(operatorName, (P) args[0], (P) args[1]); |
| } |
| |
| if (operatorName == "not") |
| { |
| return new P(operatorName, (P) args[0]); |
| } |
| |
| if (argsLength == 1) |
| { |
| if (DataType == DataType.TextP) |
| { |
| return new TextP(operatorName, (string) args[0]); |
| } |
| return new P(operatorName, args[0]); |
| } |
| return new P(operatorName, args); |
| } |
| } |
| } |