| #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.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="Bytecode"/> serializer. |
| /// </summary> |
| public class BytecodeSerializer : SimpleTypeSerializer<Bytecode> |
| { |
| /// <summary> |
| /// Initializes a new instance of the <see cref="BytecodeSerializer" /> class. |
| /// </summary> |
| public BytecodeSerializer() : base(DataType.Bytecode) |
| { |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task WriteValueAsync(Bytecode value, Stream stream, GraphBinaryWriter writer, |
| CancellationToken cancellationToken = default) |
| { |
| await WriteInstructionsAsync(value.StepInstructions, stream, writer, cancellationToken) |
| .ConfigureAwait(false); |
| await WriteInstructionsAsync(value.SourceInstructions, stream, writer, cancellationToken) |
| .ConfigureAwait(false); |
| } |
| |
| private static async Task WriteInstructionsAsync(IReadOnlyCollection<Instruction> instructions, Stream stream, |
| GraphBinaryWriter writer, CancellationToken cancellationToken) |
| { |
| await writer.WriteNonNullableValueAsync(instructions.Count, stream, cancellationToken).ConfigureAwait(false); |
| |
| foreach (var instruction in instructions) |
| { |
| await writer.WriteNonNullableValueAsync(instruction.OperatorName, stream, cancellationToken) |
| .ConfigureAwait(false); |
| await WriteArgumentsAsync(instruction.Arguments, stream, writer, cancellationToken) |
| .ConfigureAwait(false); |
| } |
| } |
| |
| private static async Task WriteArgumentsAsync(object?[] arguments, Stream stream, GraphBinaryWriter writer, |
| CancellationToken cancellationToken) |
| { |
| await writer.WriteNonNullableValueAsync(arguments.Length, stream, cancellationToken).ConfigureAwait(false); |
| |
| foreach (var value in arguments) |
| { |
| await writer.WriteAsync(value, stream, cancellationToken).ConfigureAwait(false); |
| } |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task<Bytecode> ReadValueAsync(Stream stream, GraphBinaryReader reader, |
| CancellationToken cancellationToken = default) |
| { |
| var result = new Bytecode(); |
| |
| var stepsLength = (int) await reader.ReadNonNullableValueAsync<int>(stream, cancellationToken).ConfigureAwait(false); |
| for (var i = 0; i < stepsLength; i++) |
| { |
| result.AddStep( |
| (string)await reader.ReadNonNullableValueAsync<string>(stream, cancellationToken).ConfigureAwait(false), |
| await ReadArgumentsAsync(stream, reader, cancellationToken).ConfigureAwait(false)); |
| } |
| |
| var sourcesLength = await stream.ReadIntAsync(cancellationToken).ConfigureAwait(false); |
| for (var i = 0; i < sourcesLength; i++) |
| { |
| result.AddSource( |
| (string)await reader.ReadNonNullableValueAsync<string>(stream, cancellationToken).ConfigureAwait(false), |
| await ReadArgumentsAsync(stream, reader, cancellationToken).ConfigureAwait(false)); |
| } |
| |
| return result; |
| } |
| |
| private static async Task<object?[]> ReadArgumentsAsync(Stream stream, GraphBinaryReader reader, |
| CancellationToken cancellationToken) |
| { |
| var valuesLength = |
| (int)await reader.ReadNonNullableValueAsync<int>(stream, cancellationToken).ConfigureAwait(false); |
| var values = new object?[valuesLength]; |
| for (var i = 0; i < valuesLength; i++) |
| { |
| values[i] = await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| } |
| return values; |
| } |
| } |
| } |