module-project-validator/Editor/Validators/ValidatorList.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using UnityEngine;

namespace Module.ProjectValidator.Editor
{
    internal sealed class ValidatorList
    {
        private readonly Dictionary<Type, object> _validators = new();

        public void Add(Type type)
        {
            if (type.IsInterface || type.IsAbstract)
                return;

            var typeValidator = type.GetInterfaces().FirstOrDefault(typeInterface => typeInterface.IsGenericType && typeInterface.GetGenericTypeDefinition() == typeof(IAttributeValidator<>));
            var attType = typeValidator?.GetGenericArguments()[0];
                    
            if (attType == null)
                return;

            try
            {
                var instance = FormatterServices.GetUninitializedObject(type);
                _validators.Add(attType, instance);
            }
            catch (Exception e)
            {
                Debug.LogException(e);
            }
        }

        public bool TryGetValue(Type type, out object validatorInstance)
        {
            return _validators.TryGetValue(type, out validatorInstance);
        }
    }
}