246 lines
11 KiB
C#
246 lines
11 KiB
C#
#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.Collections.ObjectModel;
|
|
using System.ComponentModel;
|
|
using System.Globalization;
|
|
using System.Reflection;
|
|
using Newtonsoft.Json.Utilities;
|
|
using System.Collections;
|
|
#if NET20
|
|
using Newtonsoft.Json.Utilities.LinqBridge;
|
|
#else
|
|
using System.Linq;
|
|
|
|
#endif
|
|
|
|
namespace Newtonsoft.Json.Serialization
|
|
{
|
|
/// <summary>
|
|
/// Contract details for a <see cref="Type"/> used by the <see cref="JsonSerializer"/>.
|
|
/// </summary>
|
|
public class JsonArrayContract : JsonContainerContract
|
|
{
|
|
/// <summary>
|
|
/// Gets the <see cref="Type"/> of the collection items.
|
|
/// </summary>
|
|
/// <value>The <see cref="Type"/> of the collection items.</value>
|
|
public Type CollectionItemType { get; private set; }
|
|
|
|
/// <summary>
|
|
/// Gets a value indicating whether the collection type is a multidimensional array.
|
|
/// </summary>
|
|
/// <value><c>true</c> if the collection type is a multidimensional array; otherwise, <c>false</c>.</value>
|
|
public bool IsMultidimensionalArray { get; private set; }
|
|
|
|
private readonly bool _isCollectionItemTypeNullableType;
|
|
private readonly Type _genericCollectionDefinitionType;
|
|
|
|
private Type _genericWrapperType;
|
|
private MethodCall<object, object> _genericWrapperCreator;
|
|
private Func<object> _genericTemporaryCollectionCreator;
|
|
|
|
internal bool IsArray { get; private set; }
|
|
internal bool ShouldCreateWrapper { get; private set; }
|
|
internal bool CanDeserialize { get; private set; }
|
|
internal ObjectConstructor<object> ParametrizedCreator { get; private set; }
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="JsonArrayContract"/> class.
|
|
/// </summary>
|
|
/// <param name="underlyingType">The underlying type for the contract.</param>
|
|
public JsonArrayContract(Type underlyingType)
|
|
: base(underlyingType)
|
|
{
|
|
ContractType = JsonContractType.Array;
|
|
IsArray = CreatedType.IsArray;
|
|
|
|
bool canDeserialize;
|
|
|
|
Type tempCollectionType;
|
|
if (IsArray)
|
|
{
|
|
CollectionItemType = ReflectionUtils.GetCollectionItemType(UnderlyingType);
|
|
IsReadOnlyOrFixedSize = true;
|
|
_genericCollectionDefinitionType = typeof(List<>).MakeGenericType(CollectionItemType);
|
|
|
|
canDeserialize = true;
|
|
IsMultidimensionalArray = (IsArray && UnderlyingType.GetArrayRank() > 1);
|
|
}
|
|
else if (typeof(IList).IsAssignableFrom(underlyingType))
|
|
{
|
|
if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(ICollection<>), out _genericCollectionDefinitionType))
|
|
CollectionItemType = _genericCollectionDefinitionType.GetGenericArguments()[0];
|
|
else
|
|
CollectionItemType = ReflectionUtils.GetCollectionItemType(underlyingType);
|
|
|
|
if (underlyingType == typeof(IList))
|
|
CreatedType = typeof(List<object>);
|
|
|
|
if (CollectionItemType != null)
|
|
ParametrizedCreator = CollectionUtils.ResolveEnumableCollectionConstructor(underlyingType, CollectionItemType);
|
|
|
|
IsReadOnlyOrFixedSize = ReflectionUtils.InheritsGenericDefinition(underlyingType, typeof(ReadOnlyCollection<>));
|
|
canDeserialize = true;
|
|
}
|
|
else if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(ICollection<>), out _genericCollectionDefinitionType))
|
|
{
|
|
CollectionItemType = _genericCollectionDefinitionType.GetGenericArguments()[0];
|
|
|
|
if (ReflectionUtils.IsGenericDefinition(underlyingType, typeof(ICollection<>))
|
|
|| ReflectionUtils.IsGenericDefinition(underlyingType, typeof(IList<>)))
|
|
CreatedType = typeof(List<>).MakeGenericType(CollectionItemType);
|
|
|
|
#if !(NET20 || NET35 || PORTABLE40)
|
|
if (ReflectionUtils.IsGenericDefinition(underlyingType, typeof(ISet<>)))
|
|
CreatedType = typeof(HashSet<>).MakeGenericType(CollectionItemType);
|
|
#endif
|
|
|
|
ParametrizedCreator = CollectionUtils.ResolveEnumableCollectionConstructor(underlyingType, CollectionItemType);
|
|
canDeserialize = true;
|
|
ShouldCreateWrapper = true;
|
|
}
|
|
#if !(NET40 || NET35 || NET20 || PORTABLE40)
|
|
else if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(IReadOnlyCollection<>), out tempCollectionType))
|
|
{
|
|
CollectionItemType = underlyingType.GetGenericArguments()[0];
|
|
|
|
if (ReflectionUtils.IsGenericDefinition(underlyingType, typeof(IReadOnlyCollection<>))
|
|
|| ReflectionUtils.IsGenericDefinition(underlyingType, typeof(IReadOnlyList<>)))
|
|
CreatedType = typeof(ReadOnlyCollection<>).MakeGenericType(CollectionItemType);
|
|
|
|
_genericCollectionDefinitionType = typeof(List<>).MakeGenericType(CollectionItemType);
|
|
ParametrizedCreator = CollectionUtils.ResolveEnumableCollectionConstructor(CreatedType, CollectionItemType);
|
|
IsReadOnlyOrFixedSize = true;
|
|
canDeserialize = (ParametrizedCreator != null);
|
|
}
|
|
#endif
|
|
else if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(IEnumerable<>), out tempCollectionType))
|
|
{
|
|
CollectionItemType = tempCollectionType.GetGenericArguments()[0];
|
|
|
|
if (ReflectionUtils.IsGenericDefinition(UnderlyingType, typeof(IEnumerable<>)))
|
|
CreatedType = typeof(List<>).MakeGenericType(CollectionItemType);
|
|
|
|
ParametrizedCreator = CollectionUtils.ResolveEnumableCollectionConstructor(underlyingType, CollectionItemType);
|
|
|
|
#if !(NET35 || NET20 || NETFX_CORE)
|
|
if (ParametrizedCreator == null && underlyingType.Name == FSharpUtils.FSharpListTypeName)
|
|
{
|
|
FSharpUtils.EnsureInitialized(underlyingType.Assembly());
|
|
ParametrizedCreator = FSharpUtils.CreateSeq(CollectionItemType);
|
|
}
|
|
#endif
|
|
|
|
if (underlyingType.IsGenericType() && underlyingType.GetGenericTypeDefinition() == typeof(IEnumerable<>))
|
|
{
|
|
_genericCollectionDefinitionType = tempCollectionType;
|
|
|
|
IsReadOnlyOrFixedSize = false;
|
|
ShouldCreateWrapper = false;
|
|
canDeserialize = true;
|
|
}
|
|
else
|
|
{
|
|
_genericCollectionDefinitionType = typeof(List<>).MakeGenericType(CollectionItemType);
|
|
|
|
IsReadOnlyOrFixedSize = true;
|
|
ShouldCreateWrapper = true;
|
|
canDeserialize = (ParametrizedCreator != null);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// types that implement IEnumerable and nothing else
|
|
canDeserialize = false;
|
|
ShouldCreateWrapper = true;
|
|
}
|
|
|
|
CanDeserialize = canDeserialize;
|
|
|
|
if (CollectionItemType != null)
|
|
_isCollectionItemTypeNullableType = ReflectionUtils.IsNullableType(CollectionItemType);
|
|
|
|
#if (NET20 || NET35)
|
|
// bug in .NET 2.0 & 3.5 that List<Nullable<T>> throws an error when adding null via IList.Add(object)
|
|
// wrapper will handle calling Add(T) instead
|
|
if (_isCollectionItemTypeNullableType
|
|
&& (ReflectionUtils.InheritsGenericDefinition(CreatedType, typeof(List<>), out tempCollectionType)
|
|
|| (IsArray && !IsMultidimensionalArray)))
|
|
{
|
|
ShouldCreateWrapper = true;
|
|
}
|
|
#endif
|
|
|
|
#if !(NET20 || NET35 || NET40 || PORTABLE40)
|
|
Type immutableCreatedType;
|
|
ObjectConstructor<object> immutableParameterizedCreator;
|
|
if (ImmutableCollectionsUtils.TryBuildImmutableForArrayContract(underlyingType, CollectionItemType, out immutableCreatedType, out immutableParameterizedCreator))
|
|
{
|
|
CreatedType = immutableCreatedType;
|
|
ParametrizedCreator = immutableParameterizedCreator;
|
|
IsReadOnlyOrFixedSize = true;
|
|
CanDeserialize = true;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
internal IWrappedCollection CreateWrapper(object list)
|
|
{
|
|
if (_genericWrapperCreator == null)
|
|
{
|
|
_genericWrapperType = typeof(CollectionWrapper<>).MakeGenericType(CollectionItemType);
|
|
|
|
Type constructorArgument;
|
|
|
|
if (ReflectionUtils.InheritsGenericDefinition(_genericCollectionDefinitionType, typeof(List<>))
|
|
|| _genericCollectionDefinitionType.GetGenericTypeDefinition() == typeof(IEnumerable<>))
|
|
constructorArgument = typeof(ICollection<>).MakeGenericType(CollectionItemType);
|
|
else
|
|
constructorArgument = _genericCollectionDefinitionType;
|
|
|
|
ConstructorInfo genericWrapperConstructor = _genericWrapperType.GetConstructor(new[] { constructorArgument });
|
|
_genericWrapperCreator = JsonTypeReflector.ReflectionDelegateFactory.CreateMethodCall<object>(genericWrapperConstructor);
|
|
}
|
|
|
|
return (IWrappedCollection)_genericWrapperCreator(null, list);
|
|
}
|
|
|
|
internal IList CreateTemporaryCollection()
|
|
{
|
|
if (_genericTemporaryCollectionCreator == null)
|
|
{
|
|
// multidimensional array will also have array instances in it
|
|
Type collectionItemType = (IsMultidimensionalArray) ? typeof(object) : CollectionItemType;
|
|
Type temporaryListType = typeof(List<>).MakeGenericType(collectionItemType);
|
|
_genericTemporaryCollectionCreator = JsonTypeReflector.ReflectionDelegateFactory.CreateDefaultConstructor<object>(temporaryListType);
|
|
}
|
|
|
|
return (IList)_genericTemporaryCollectionCreator();
|
|
}
|
|
}
|
|
} |