using System;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;

namespace ScreenConnect;

public class EmitBuilder
{
	private static AssemblyBuilder assemblyBuilder = ReflectionExtensions.DefineDynamicAssembly(new AssemblyName(typeof(EmitBuilder).FullName), AssemblyBuilderAccess.Run);

	private static ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(typeof(EmitBuilder).FullName);

	private static Dictionary<object, object> cache = new Dictionary<object, object>();

	public static T GetOrBuild<T>(object cacheKey, Func<ModuleBuilder, T> buildFunc)
	{
		lock (cache)
		{
			return (T)cache.GetValueAndCreateIfNotFound(cacheKey, () => buildFunc(moduleBuilder));
		}
	}
}