DefaultSerializationBinder
The default serialization binder used when resolving and loading classes from type names.
using Newtonsoft.Json.Utilities;
using System;
using System.Globalization;
using System.Reflection;
namespace Newtonsoft.Json.Serialization
{
public class DefaultSerializationBinder : SerializationBinder
{
internal struct TypeNameKey : IEquatable<TypeNameKey>
{
internal readonly string AssemblyName;
internal readonly string TypeName;
public TypeNameKey(string assemblyName, string typeName)
{
AssemblyName = assemblyName;
TypeName = typeName;
}
public override int GetHashCode()
{
return ((AssemblyName != null) ? AssemblyName.GetHashCode() : 0) ^ ((TypeName != null) ? TypeName.GetHashCode() : 0);
}
public override bool Equals(object obj)
{
if (!(obj is TypeNameKey))
return false;
return Equals((TypeNameKey)obj);
}
public bool Equals(TypeNameKey other)
{
if (AssemblyName == other.AssemblyName)
return TypeName == other.TypeName;
return false;
}
}
internal static readonly DefaultSerializationBinder Instance = new DefaultSerializationBinder();
private readonly ThreadSafeStore<TypeNameKey, Type> _typeCache = new ThreadSafeStore<TypeNameKey, Type>(GetTypeFromTypeNameKey);
private static Type GetTypeFromTypeNameKey(TypeNameKey typeNameKey)
{
string assemblyName = typeNameKey.AssemblyName;
string typeName = typeNameKey.TypeName;
if (assemblyName != null) {
Assembly assembly = Assembly.Load(new AssemblyName(assemblyName));
if ((object)assembly == null)
throw new JsonSerializationException("Could not load assembly '{0}'.".FormatWith(CultureInfo.InvariantCulture, assemblyName));
Type type = assembly.GetType(typeName);
if ((object)type == null)
throw new JsonSerializationException("Could not find type '{0}' in assembly '{1}'.".FormatWith(CultureInfo.InvariantCulture, typeName, assembly.FullName));
return type;
}
return Type.GetType(typeName);
}
public override Type BindToType(string assemblyName, string typeName)
{
return _typeCache.Get(new TypeNameKey(assemblyName, typeName));
}
public override void BindToName(Type serializedType, out string assemblyName, out string typeName)
{
assemblyName = serializedType.GetTypeInfo().get_Assembly().FullName;
typeName = serializedType.FullName;
}
}
}