215 lines
9.0 KiB
C#
215 lines
9.0 KiB
C#
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#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Runtime.Serialization;
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using System.Reflection;
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using System.Globalization;
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using LC.Newtonsoft.Json.Utilities;
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using System.Collections.Generic;
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namespace LC.Newtonsoft.Json.Serialization
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{
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/// <summary>
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/// The default serialization binder used when resolving and loading classes from type names.
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/// </summary>
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public class DefaultSerializationBinder :
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#pragma warning disable 618
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SerializationBinder,
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#pragma warning restore 618
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ISerializationBinder
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{
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internal static readonly DefaultSerializationBinder Instance = new DefaultSerializationBinder();
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private readonly ThreadSafeStore<StructMultiKey<string?, string>, Type> _typeCache;
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/// <summary>
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/// Initializes a new instance of the <see cref="DefaultSerializationBinder"/> class.
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/// </summary>
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public DefaultSerializationBinder()
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{
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_typeCache = new ThreadSafeStore<StructMultiKey<string?, string>, Type>(GetTypeFromTypeNameKey);
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}
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private Type GetTypeFromTypeNameKey(StructMultiKey<string?, string> typeNameKey)
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{
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string? assemblyName = typeNameKey.Value1;
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string typeName = typeNameKey.Value2;
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if (assemblyName != null)
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{
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Assembly assembly;
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#if !(DOTNET || PORTABLE40 || PORTABLE)
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// look, I don't like using obsolete methods as much as you do but this is the only way
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// Assembly.Load won't check the GAC for a partial name
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#pragma warning disable 618,612
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assembly = Assembly.LoadWithPartialName(assemblyName);
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#pragma warning restore 618,612
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#elif DOTNET || PORTABLE
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assembly = Assembly.Load(new AssemblyName(assemblyName));
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#else
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assembly = Assembly.Load(assemblyName);
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#endif
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#if HAVE_APP_DOMAIN
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if (assembly == null)
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{
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// will find assemblies loaded with Assembly.LoadFile outside of the main directory
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Assembly[] loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies();
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foreach (Assembly a in loadedAssemblies)
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{
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// check for both full name or partial name match
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if (a.FullName == assemblyName || a.GetName().Name == assemblyName)
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{
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assembly = a;
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break;
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}
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}
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}
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#endif
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if (assembly == null)
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{
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throw new JsonSerializationException("Could not load assembly '{0}'.".FormatWith(CultureInfo.InvariantCulture, assemblyName));
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}
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Type? type = assembly.GetType(typeName);
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if (type == null)
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{
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// if generic type, try manually parsing the type arguments for the case of dynamically loaded assemblies
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// example generic typeName format: System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]
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if (typeName.IndexOf('`') >= 0)
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{
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try
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{
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type = GetGenericTypeFromTypeName(typeName, assembly);
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}
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catch (Exception ex)
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{
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throw new JsonSerializationException("Could not find type '{0}' in assembly '{1}'.".FormatWith(CultureInfo.InvariantCulture, typeName, assembly.FullName), ex);
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}
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}
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if (type == null)
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{
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throw new JsonSerializationException("Could not find type '{0}' in assembly '{1}'.".FormatWith(CultureInfo.InvariantCulture, typeName, assembly.FullName));
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}
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}
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return type;
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}
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else
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{
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return Type.GetType(typeName);
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}
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}
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private Type? GetGenericTypeFromTypeName(string typeName, Assembly assembly)
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{
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Type? type = null;
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int openBracketIndex = typeName.IndexOf('[');
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if (openBracketIndex >= 0)
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{
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string genericTypeDefName = typeName.Substring(0, openBracketIndex);
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Type genericTypeDef = assembly.GetType(genericTypeDefName);
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if (genericTypeDef != null)
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{
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List<Type> genericTypeArguments = new List<Type>();
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int scope = 0;
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int typeArgStartIndex = 0;
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int endIndex = typeName.Length - 1;
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for (int i = openBracketIndex + 1; i < endIndex; ++i)
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{
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char current = typeName[i];
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switch (current)
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{
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case '[':
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if (scope == 0)
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{
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typeArgStartIndex = i + 1;
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}
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++scope;
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break;
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case ']':
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--scope;
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if (scope == 0)
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{
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string typeArgAssemblyQualifiedName = typeName.Substring(typeArgStartIndex, i - typeArgStartIndex);
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StructMultiKey<string?, string> typeNameKey = ReflectionUtils.SplitFullyQualifiedTypeName(typeArgAssemblyQualifiedName);
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genericTypeArguments.Add(GetTypeByName(typeNameKey));
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}
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break;
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}
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}
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type = genericTypeDef.MakeGenericType(genericTypeArguments.ToArray());
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}
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}
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return type;
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}
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private Type GetTypeByName(StructMultiKey<string?, string> typeNameKey)
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{
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return _typeCache.Get(typeNameKey);
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}
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/// <summary>
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/// When overridden in a derived class, controls the binding of a serialized object to a type.
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/// </summary>
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/// <param name="assemblyName">Specifies the <see cref="Assembly"/> name of the serialized object.</param>
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/// <param name="typeName">Specifies the <see cref="System.Type"/> name of the serialized object.</param>
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/// <returns>
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/// The type of the object the formatter creates a new instance of.
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/// </returns>
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public override Type BindToType(string? assemblyName, string typeName)
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{
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return GetTypeByName(new StructMultiKey<string?, string>(assemblyName, typeName));
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}
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/// <summary>
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/// When overridden in a derived class, controls the binding of a serialized object to a type.
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/// </summary>
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/// <param name="serializedType">The type of the object the formatter creates a new instance of.</param>
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/// <param name="assemblyName">Specifies the <see cref="Assembly"/> name of the serialized object.</param>
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/// <param name="typeName">Specifies the <see cref="System.Type"/> name of the serialized object.</param>
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public
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#if HAVE_SERIALIZATION_BINDER_BIND_TO_NAME
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override
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#endif
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void BindToName(Type serializedType, out string? assemblyName, out string? typeName)
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{
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#if !HAVE_FULL_REFLECTION
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assemblyName = serializedType.GetTypeInfo().Assembly.FullName;
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typeName = serializedType.FullName;
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#else
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assemblyName = serializedType.Assembly.FullName;
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typeName = serializedType.FullName;
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#endif
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}
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}
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}
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