csharp-sdk-upm/Libs/Newtonsoft.Json.AOT/Linq/JContainer.Async.cs

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2021-03-31 11:22:02 +08:00
#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.Diagnostics;
using System.Globalization;
using System.Threading;
using System.Threading.Tasks;
using LC.Newtonsoft.Json.Utilities;
namespace LC.Newtonsoft.Json.Linq
{
public abstract partial class JContainer
{
internal async Task ReadTokenFromAsync(JsonReader reader, JsonLoadSettings? options, CancellationToken cancellationToken = default)
{
ValidationUtils.ArgumentNotNull(reader, nameof(reader));
int startDepth = reader.Depth;
if (!await reader.ReadAsync(cancellationToken).ConfigureAwait(false))
{
throw JsonReaderException.Create(reader, "Error reading {0} from JsonReader.".FormatWith(CultureInfo.InvariantCulture, GetType().Name));
}
await ReadContentFromAsync(reader, options, cancellationToken).ConfigureAwait(false);
if (reader.Depth > startDepth)
{
throw JsonReaderException.Create(reader, "Unexpected end of content while loading {0}.".FormatWith(CultureInfo.InvariantCulture, GetType().Name));
}
}
private async Task ReadContentFromAsync(JsonReader reader, JsonLoadSettings? settings, CancellationToken cancellationToken = default)
{
IJsonLineInfo? lineInfo = reader as IJsonLineInfo;
JContainer? parent = this;
do
{
if (parent is JProperty p && p.Value != null)
{
if (parent == this)
{
return;
}
parent = parent.Parent;
}
MiscellaneousUtils.Assert(parent != null);
switch (reader.TokenType)
{
case JsonToken.None:
// new reader. move to actual content
break;
case JsonToken.StartArray:
JArray a = new JArray();
a.SetLineInfo(lineInfo, settings);
parent.Add(a);
parent = a;
break;
case JsonToken.EndArray:
if (parent == this)
{
return;
}
parent = parent.Parent;
break;
case JsonToken.StartObject:
JObject o = new JObject();
o.SetLineInfo(lineInfo, settings);
parent.Add(o);
parent = o;
break;
case JsonToken.EndObject:
if (parent == this)
{
return;
}
parent = parent.Parent;
break;
case JsonToken.StartConstructor:
JConstructor constructor = new JConstructor(reader.Value!.ToString());
constructor.SetLineInfo(lineInfo, settings);
parent.Add(constructor);
parent = constructor;
break;
case JsonToken.EndConstructor:
if (parent == this)
{
return;
}
parent = parent.Parent;
break;
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);
parent.Add(v);
break;
case JsonToken.Comment:
if (settings != null && settings.CommentHandling == CommentHandling.Load)
{
v = JValue.CreateComment(reader.Value!.ToString());
v.SetLineInfo(lineInfo, settings);
parent.Add(v);
}
break;
case JsonToken.Null:
v = JValue.CreateNull();
v.SetLineInfo(lineInfo, settings);
parent.Add(v);
break;
case JsonToken.Undefined:
v = JValue.CreateUndefined();
v.SetLineInfo(lineInfo, settings);
parent.Add(v);
break;
case JsonToken.PropertyName:
JProperty? property = ReadProperty(reader, settings, lineInfo, parent);
if (property != null)
{
parent = property;
}
else
{
await reader.SkipAsync().ConfigureAwait(false);
}
break;
default:
throw new InvalidOperationException("The JsonReader should not be on a token of type {0}.".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
}
} while (await reader.ReadAsync(cancellationToken).ConfigureAwait(false));
}
}
}
#endif