1 // OpenTween - Client of Twitter
2 // Copyright (c) 2016 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
3 // All rights reserved.
5 // This file is part of OpenTween.
7 // This program is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 3 of the License, or (at your option)
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 // You should have received a copy of the GNU General Public License along
18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 // Boston, MA 02110-1301, USA.
22 #nullable enable annotations
25 using System.Collections.Generic;
26 using System.Diagnostics.CodeAnalysis;
28 using System.Net.Http;
29 using System.Runtime.Serialization;
31 using System.Threading.Tasks;
34 namespace OpenTween.Connection
37 /// HTTP レスポンスの受信と JSON のパース処理を延期させるクラス
39 public sealed class LazyJson<T> : IDisposable
41 public HttpResponseMessage? Response { get; }
44 private bool completed = false;
46 public LazyJson(HttpResponseMessage response)
47 => this.Response = response;
49 internal LazyJson(T instance)
53 this.instance = instance;
54 this.completed = true;
57 public async Task<T> LoadJsonAsync()
60 return this.instance!;
62 using var content = this.Response.Content;
63 var responseText = await content.ReadAsStringAsync()
64 .ConfigureAwait(false);
68 this.instance = MyCommon.CreateDataFromJson<T>(responseText);
69 this.completed = true;
73 catch (SerializationException ex)
75 throw TwitterApiException.CreateFromException(ex, responseText);
80 => this.Response?.Dispose();
83 public static class LazyJson
85 public static LazyJson<T> Create<T>(T instance)
86 => new LazyJson<T>(instance);
89 public static class LazyJsonTaskExtension
91 public static async Task IgnoreResponse<T>(this Task<LazyJson<T>> task)
93 using var lazyJson = await task.ConfigureAwait(false);