#region License // Copyright (c) 2007 James Newton-King // // Permission is hereby granted, free of charge, to any person // obtaining a copy of this software and associated documentation // files (the "Software"), to deal in the Software without // restriction, including without limitation the rights to use, // copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following // conditions: // // The above copyright notice and this permission notice shall be // included in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR // OTHER DEALINGS IN THE SOFTWARE. #endregion #if HAVE_ASYNC using System; using System.Globalization; using System.Threading; using System.Threading.Tasks; using Newtonsoft.Json.Utilities; namespace Newtonsoft.Json.Linq { internal abstract partial class JToken { /// <summary> /// Writes this token to a <see cref="JsonWriter"/> asynchronously. /// </summary> /// <param name="writer">A <see cref="JsonWriter"/> into which this method will write.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests.</param> /// <param name="converters">A collection of <see cref="JsonConverter"/> which will be used when writing the token.</param> /// <returns>A <see cref="Task"/> that represents the asynchronous write operation.</returns> public virtual Task WriteToAsync(JsonWriter writer, CancellationToken cancellationToken, params JsonConverter[] converters) { throw new NotImplementedException(); } /// <summary> /// Writes this token to a <see cref="JsonWriter"/> asynchronously. /// </summary> /// <param name="writer">A <see cref="JsonWriter"/> into which this method will write.</param> /// <param name="converters">A collection of <see cref="JsonConverter"/> which will be used when writing the token.</param> /// <returns>A <see cref="Task"/> that represents the asynchronous write operation.</returns> public Task WriteToAsync(JsonWriter writer, params JsonConverter[] converters) { return WriteToAsync(writer, default(CancellationToken), converters); } /// <summary> /// Asynchronously creates a <see cref="JToken"/> from a <see cref="JsonReader"/>. /// </summary> /// <param name="reader">An <see cref="JsonReader"/> positioned at the token to read into this <see cref="JToken"/>.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param> /// <returns> /// A <see cref="Task{TResult}"/> that represents the asynchronous creation. The /// <see cref="Task{TResult}.Result"/> property returns a <see cref="JToken"/> that contains /// the token and its descendant tokens /// that were read from the reader. The runtime type of the token is determined /// by the token type of the first token encountered in the reader. /// </returns> public static Task<JToken> ReadFromAsync(JsonReader reader, CancellationToken cancellationToken = default(CancellationToken)) { return ReadFromAsync(reader, null, cancellationToken); } /// <summary> /// Asynchronously creates a <see cref="JToken"/> from a <see cref="JsonReader"/>. /// </summary> /// <param name="reader">An <see cref="JsonReader"/> positioned at the token to read into this <see cref="JToken"/>.</param> /// <param name="settings">The <see cref="JsonLoadSettings"/> used to load the JSON. /// If this is <c>null</c>, default load settings will be used.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param> /// <returns> /// A <see cref="Task{TResult}"/> that represents the asynchronous creation. The /// <see cref="Task{TResult}.Result"/> property returns a <see cref="JToken"/> that contains /// the token and its descendant tokens /// that were read from the reader. The runtime type of the token is determined /// by the token type of the first token encountered in the reader. /// </returns> public static async Task<JToken> ReadFromAsync(JsonReader reader, JsonLoadSettings settings, CancellationToken cancellationToken = default(CancellationToken)) { ValidationUtils.ArgumentNotNull(reader, nameof(reader)); if (reader.TokenType == JsonToken.None) { if (!await (settings != null && settings.CommentHandling == CommentHandling.Ignore ? reader.ReadAndMoveToContentAsync(cancellationToken) : reader.ReadAsync(cancellationToken)).ConfigureAwait(false)) { throw JsonReaderException.Create(reader, "Error reading JToken from JsonReader."); } } IJsonLineInfo lineInfo = reader as IJsonLineInfo; switch (reader.TokenType) { case JsonToken.StartObject: return await JObject.LoadAsync(reader, settings, cancellationToken).ConfigureAwait(false); case JsonToken.StartArray: return await JArray.LoadAsync(reader, settings, cancellationToken).ConfigureAwait(false); case JsonToken.StartConstructor: return await JConstructor.LoadAsync(reader, settings, cancellationToken).ConfigureAwait(false); case JsonToken.PropertyName: return await JProperty.LoadAsync(reader, settings, cancellationToken).ConfigureAwait(false); case JsonToken.String: case JsonToken.Integer: case JsonToken.Float: case JsonToken.Date: case JsonToken.Boolean: case JsonToken.Bytes: JValue v = new JValue(reader.Value); v.SetLineInfo(lineInfo, settings); return v; case JsonToken.Comment: v = JValue.CreateComment(reader.Value.ToString()); v.SetLineInfo(lineInfo, settings); return v; case JsonToken.Null: v = JValue.CreateNull(); v.SetLineInfo(lineInfo, settings); return v; case JsonToken.Undefined: v = JValue.CreateUndefined(); v.SetLineInfo(lineInfo, settings); return v; default: throw JsonReaderException.Create(reader, "Error reading JToken from JsonReader. Unexpected token: {0}".FormatWith(CultureInfo.InvariantCulture, reader.TokenType)); } } /// <summary> /// Asynchronously creates a <see cref="JToken"/> from a <see cref="JsonReader"/>. /// </summary> /// <param name="reader">A <see cref="JsonReader"/> positioned at the token to read into this <see cref="JToken"/>.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param> /// <returns> /// A <see cref="Task{TResult}"/> that represents the asynchronous creation. The <see cref="Task{TResult}.Result"/> /// property returns a <see cref="JToken"/> that contains the token and its descendant tokens /// that were read from the reader. The runtime type of the token is determined /// by the token type of the first token encountered in the reader. /// </returns> public static Task<JToken> LoadAsync(JsonReader reader, CancellationToken cancellationToken = default(CancellationToken)) { return LoadAsync(reader, null, cancellationToken); } /// <summary> /// Asynchronously creates a <see cref="JToken"/> from a <see cref="JsonReader"/>. /// </summary> /// <param name="reader">A <see cref="JsonReader"/> positioned at the token to read into this <see cref="JToken"/>.</param> /// <param name="settings">The <see cref="JsonLoadSettings"/> used to load the JSON. /// If this is <c>null</c>, default load settings will be used.</param> /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.</param> /// <returns> /// A <see cref="Task{TResult}"/> that represents the asynchronous creation. The <see cref="Task{TResult}.Result"/> /// property returns a <see cref="JToken"/> that contains the token and its descendant tokens /// that were read from the reader. The runtime type of the token is determined /// by the token type of the first token encountered in the reader. /// </returns> public static Task<JToken> LoadAsync(JsonReader reader, JsonLoadSettings settings, CancellationToken cancellationToken = default(CancellationToken)) { return ReadFromAsync(reader, settings, cancellationToken); } } } #endif