TempAssemblyCache.cs

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using System.Collections.Generic;
 
namespace System.Xml.Serialization;
 
internal sealed class TempAssemblyCache
{
    private Dictionary<TempAssemblyCacheKey, TempAssembly> _cache = new Dictionary<TempAssemblyCacheKey, TempAssembly>();
 
    internal TempAssembly this[string ns, object o]
    {
        get
        {
            _cache.TryGetValue(new TempAssemblyCacheKey(ns, o), out var value);
            return value;
        }
    }
 
    internal void Add(string ns, object o, TempAssembly assembly)
    {
        TempAssemblyCacheKey key = new TempAssemblyCacheKey(ns, o);
        lock (this)
        {
            if (!_cache.TryGetValue(key, out var value) || value != assembly)
            {
                Dictionary<TempAssemblyCacheKey, TempAssembly> dictionary = new Dictionary<TempAssemblyCacheKey, TempAssembly>(_cache);
                dictionary[key] = assembly;
                _cache = dictionary;
            }
        }
    }
}