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#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
using System;
using System.Collections.Generic;
using System.Net;
using System.Runtime.CompilerServices;
using Newtonsoft.Json.Utilities;
namespace Newtonsoft.Json.Serialization
{
internal abstract class JsonSerializerInternalBase
{
private class ReferenceEqualsEqualityComparer : IEqualityComparer<object>
{
bool IEqualityComparer<object>.Equals(object x, object y)
{
return ReferenceEquals(x, y);
}
int IEqualityComparer<object>.GetHashCode(object obj)
{
#if !PocketPC
// put objects in a bucket based on their reference
return RuntimeHelpers.GetHashCode(obj);
#else
// put all objects in the same bucket so ReferenceEquals is called on all
return -1;
#endif
}
}
private ErrorContext _currentErrorContext;
private BidirectionalDictionary<string, object> _mappings;
internal readonly JsonSerializer Serializer;
protected JsonSerializerInternalBase(JsonSerializer serializer)
{
ValidationUtils.ArgumentNotNull(serializer, "serializer");
Serializer = serializer;
}
internal BidirectionalDictionary<string, object> DefaultReferenceMappings
{
get
{
// override equality comparer for object key dictionary
// object will be modified as it deserializes and might have mutable hashcode
if (_mappings == null)
_mappings = new BidirectionalDictionary<string, object>(
EqualityComparer<string>.Default,
new ReferenceEqualsEqualityComparer());
return _mappings;
}
}
protected ErrorContext GetErrorContext(object currentObject, object member, Exception error)
{
if (_currentErrorContext == null)
_currentErrorContext = new ErrorContext(currentObject, member, 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, Exception ex)
{
ErrorContext errorContext = GetErrorContext(currentObject, keyValue, ex);
contract.InvokeOnError(currentObject, Serializer.Context, errorContext);
if (!errorContext.Handled)
Serializer.OnError(new ErrorEventArgs(currentObject, errorContext));
return errorContext.Handled;
}
}
}
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