jellyfin/Emby.Server.Implementations/Data/TypeMapper.cs

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using System;
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using System.Collections.Concurrent;
using System.Linq;
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namespace Emby.Server.Implementations.Data
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{
/// <summary>
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/// Class TypeMapper.
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/// </summary>
public class TypeMapper
{
/// <summary>
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/// This holds all the types in the running assemblies
/// so that we can de-serialize properly when we don't have strong types.
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/// </summary>
private readonly ConcurrentDictionary<string, Type> _typeMap = new ConcurrentDictionary<string, Type>();
/// <summary>
/// Gets the type.
/// </summary>
/// <param name="typeName">Name of the type.</param>
/// <returns>Type.</returns>
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/// <exception cref="ArgumentNullException"><c>typeName</c> is null.</exception>
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public Type GetType(string typeName)
{
if (string.IsNullOrEmpty(typeName))
{
throw new ArgumentNullException(nameof(typeName));
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}
return _typeMap.GetOrAdd(typeName, LookupType);
}
/// <summary>
/// Lookups the type.
/// </summary>
/// <param name="typeName">Name of the type.</param>
/// <returns>Type.</returns>
private Type LookupType(string typeName)
{
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return AppDomain.CurrentDomain.GetAssemblies()
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.Select(a => a.GetType(typeName))
.FirstOrDefault(t => t != null);
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}
}
}