AccessorCache.cs

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using System;
using System.Collections.Concurrent;
using System.Reflection;
 
namespace IKVM.Runtime.Accessors
{
 
#if FIRST_PASS == false && EXPORTER == false && IMPORTER == false
 
    class AccessorCache
    {
 
        public static AccessorCache Get(ref AccessorCache cache, Assembly assembly)
        {
            return AccessorUtil.LazyGet(ref cache, () => new AccessorCache(assembly));
        }
 
        readonly Assembly assembly;
        readonly ConcurrentDictionary<Type, Accessor> cache = new ConcurrentDictionary<Type, Accessor>();
 
        public AccessorCache(Assembly assembly)
        {
            this.assembly = assembly ?? throw new ArgumentNullException(nameof(assembly));
        }
 
        public TAccessor Get<TAccessor>(ref TAccessor accessor)
            where TAccessor : Accessor
        {
            return AccessorUtil.LazyGet(ref accessor, () => (TAccessor)cache.GetOrAdd(typeof(TAccessor), Make));
        }
 
        Accessor Make(Type accessorType)
        {
            return (Accessor)Activator.CreateInstance(accessorType, (AccessorTypeResolver)(t => assembly.GetType(t)));
        }
 
    }
 
#endif
 
}