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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.Reflection;
using Newtonsoft.Json.Utilities;
using System.Collections;
namespace Newtonsoft.Json.Serialization
{
/// <summary>
/// Contract details for a <see cref="Type"/> used by the <see cref="JsonSerializer"/>.
/// </summary>
public class JsonDictionaryContract : JsonContract
{
/// <summary>
/// Gets or sets the property name resolver.
/// </summary>
/// <value>The property name resolver.</value>
public Func<string, string> PropertyNameResolver { get; set; }
internal Type DictionaryKeyType { get; private set; }
internal Type DictionaryValueType { get; private set; }
internal JsonContract DictionaryKeyContract { get; set; }
internal JsonContract DictionaryValueContract { get; set; }
private readonly bool _isDictionaryValueTypeNullableType;
private readonly Type _genericCollectionDefinitionType;
private Type _genericWrapperType;
private MethodCall<object, object> _genericWrapperCreator;
/// <summary>
/// Initializes a new instance of the <see cref="JsonDictionaryContract"/> class.
/// </summary>
/// <param name="underlyingType">The underlying type for the contract.</param>
public JsonDictionaryContract(Type underlyingType)
: base(underlyingType)
{
ContractType = JsonContractType.Dictionary;
Type keyType;
Type valueType;
if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(IDictionary<,>), out _genericCollectionDefinitionType))
{
keyType = _genericCollectionDefinitionType.GetGenericArguments()[0];
valueType = _genericCollectionDefinitionType.GetGenericArguments()[1];
}
else
{
ReflectionUtils.GetDictionaryKeyValueTypes(UnderlyingType, out keyType, out valueType);
}
DictionaryKeyType = keyType;
DictionaryValueType = valueType;
if (DictionaryValueType != null)
_isDictionaryValueTypeNullableType = ReflectionUtils.IsNullableType(DictionaryValueType);
if (IsTypeGenericDictionaryInterface(UnderlyingType))
{
CreatedType = ReflectionUtils.MakeGenericType(typeof(Dictionary<,>), keyType, valueType);
}
else if (UnderlyingType == typeof(IDictionary))
{
CreatedType = typeof (Dictionary<object, object>);
}
}
internal IWrappedDictionary CreateWrapper(object dictionary)
{
if (dictionary is IDictionary && (DictionaryValueType == null || !_isDictionaryValueTypeNullableType))
return new DictionaryWrapper<object, object>((IDictionary)dictionary);
if (_genericWrapperCreator == null)
{
_genericWrapperType = ReflectionUtils.MakeGenericType(typeof(DictionaryWrapper<,>), DictionaryKeyType, DictionaryValueType);
ConstructorInfo genericWrapperConstructor = _genericWrapperType.GetConstructor(new[] { _genericCollectionDefinitionType });
_genericWrapperCreator = JsonTypeReflector.ReflectionDelegateFactory.CreateMethodCall<object>(genericWrapperConstructor);
}
return (IWrappedDictionary)_genericWrapperCreator(null, dictionary);
}
private bool IsTypeGenericDictionaryInterface(Type type)
{
if (!type.IsGenericType)
return false;
Type genericDefinition = type.GetGenericTypeDefinition();
return (genericDefinition == typeof(IDictionary<,>));
}
}
}
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