| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System.Collections.Generic; |
| | | 5 | | using System.Diagnostics.CodeAnalysis; |
| | | 6 | | |
| | | 7 | | namespace System.Text.Json.Serialization.Converters |
| | | 8 | | { |
| | | 9 | | internal sealed class MemoryConverter<T> : JsonCollectionConverter<Memory<T>, T> |
| | | 10 | | { |
| | 0 | 11 | | internal override bool CanHaveMetadata => false; |
| | 0 | 12 | | public override bool HandleNull => true; |
| | | 13 | | |
| | | 14 | | internal override bool OnTryRead( |
| | | 15 | | ref Utf8JsonReader reader, |
| | | 16 | | Type typeToConvert, |
| | | 17 | | JsonSerializerOptions options, |
| | | 18 | | scoped ref ReadStack state, |
| | | 19 | | out Memory<T> value) |
| | 0 | 20 | | { |
| | 0 | 21 | | if (reader.TokenType is JsonTokenType.Null && state.Current.ReturnValue is null) |
| | 0 | 22 | | { |
| | 0 | 23 | | value = default; |
| | 0 | 24 | | return true; |
| | | 25 | | } |
| | | 26 | | |
| | 0 | 27 | | return base.OnTryRead(ref reader, typeToConvert, options, ref state, out value); |
| | 0 | 28 | | } |
| | | 29 | | |
| | | 30 | | protected override void Add(in T value, ref ReadStack state) |
| | 0 | 31 | | { |
| | 0 | 32 | | ((List<T>)state.Current.ReturnValue!).Add(value); |
| | 0 | 33 | | } |
| | | 34 | | |
| | | 35 | | protected override void CreateCollection(ref Utf8JsonReader reader, scoped ref ReadStack state, JsonSerializerOp |
| | 0 | 36 | | { |
| | 0 | 37 | | state.Current.ReturnValue = new List<T>(); |
| | 0 | 38 | | } |
| | | 39 | | |
| | 0 | 40 | | internal sealed override bool IsConvertibleCollection => true; |
| | | 41 | | protected override void ConvertCollection(ref ReadStack state, JsonSerializerOptions options) |
| | 0 | 42 | | { |
| | 0 | 43 | | Memory<T> memory = ((List<T>)state.Current.ReturnValue!).ToArray().AsMemory(); |
| | 0 | 44 | | state.Current.ReturnValue = memory; |
| | 0 | 45 | | } |
| | | 46 | | |
| | | 47 | | protected override bool OnWriteResume(Utf8JsonWriter writer, Memory<T> value, JsonSerializerOptions options, ref |
| | 0 | 48 | | { |
| | 0 | 49 | | return ReadOnlyMemoryConverter<T>.OnWriteResume(writer, value.Span, options, ref state); |
| | 0 | 50 | | } |
| | | 51 | | } |
| | | 52 | | } |