JsonSerializerInternalBase
using Newtonsoft.Json.Utilities;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.CompilerServices;
namespace Newtonsoft.Json.Serialization
{
internal abstract class JsonSerializerInternalBase
{
private class ReferenceEqualsEqualityComparer : IEqualityComparer<object>
{
bool IEqualityComparer<object>.Equals(object x, object y)
{
return x == y;
}
int IEqualityComparer<object>.GetHashCode(object obj)
{
return RuntimeHelpers.GetHashCode(obj);
}
}
private ErrorContext _currentErrorContext;
private BidirectionalDictionary<string, object> _mappings;
internal readonly JsonSerializer Serializer;
internal readonly ITraceWriter TraceWriter;
protected JsonSerializerProxy InternalSerializer;
internal BidirectionalDictionary<string, object> DefaultReferenceMappings {
get {
if (_mappings == null)
_mappings = new BidirectionalDictionary<string, object>(EqualityComparer<string>.Default, new ReferenceEqualsEqualityComparer(), "A different value already has the Id '{0}'.", "A different Id has already been assigned for value '{0}'. This error may be caused by an object being reused multiple times during deserialization and can be fixed with the setting ObjectCreationHandling.Replace.");
return _mappings;
}
}
protected JsonSerializerInternalBase(JsonSerializer serializer)
{
ValidationUtils.ArgumentNotNull(serializer, "serializer");
Serializer = serializer;
TraceWriter = serializer.TraceWriter;
}
protected NullValueHandling ResolvedNullValueHandling(JsonObjectContract containerContract, JsonProperty property)
{
return property.NullValueHandling ?? containerContract?.ItemNullValueHandling ?? Serializer._nullValueHandling;
}
private ErrorContext GetErrorContext(object currentObject, object member, string path, Exception error)
{
if (_currentErrorContext == null)
_currentErrorContext = new ErrorContext(currentObject, member, path, error);
if (_currentErrorContext.Error != error)
throw new InvalidOperationException("Current error context error is different to requested error.");
return _currentErrorContext;
}
protected void ClearErrorContext()
{
if (_currentErrorContext == null)
throw new InvalidOperationException("Could not clear error context. Error context is already null.");
_currentErrorContext = null;
}
protected bool IsErrorHandled(object currentObject, JsonContract contract, object keyValue, IJsonLineInfo lineInfo, string path, Exception ex)
{
ErrorContext errorContext = GetErrorContext(currentObject, keyValue, path, ex);
if (TraceWriter != null && TraceWriter.LevelFilter >= TraceLevel.Error && !errorContext.Traced) {
errorContext.Traced = true;
string text = ((object)GetType() == typeof(JsonSerializerInternalWriter)) ? "Error serializing" : "Error deserializing";
if (contract != null)
text = text + " " + contract.UnderlyingType;
text = text + ". " + ex.Message;
if (!(ex is JsonException))
text = JsonPosition.FormatMessage(lineInfo, path, text);
TraceWriter.Trace(TraceLevel.Error, text, ex);
}
if (contract != null && currentObject != null)
contract.InvokeOnError(currentObject, Serializer.Context, errorContext);
if (!errorContext.Handled)
Serializer.OnError(new ErrorEventArgs(currentObject, errorContext));
return errorContext.Handled;
}
}
}