HandDriverUPM/NaughtyAttributes/Editor/PropertyValidators/PropertyValidatorBase.cs

using System;
using System.Collections.Generic;
using UnityEditor;

namespace NaughtyAttributes.Editor
{
	public abstract class PropertyValidatorBase
	{
		public abstract void ValidateProperty(SerializedProperty property);
	}

	public static class ValidatorAttributeExtensions
	{
		private static Dictionary<Type, PropertyValidatorBase> _validatorsByAttributeType;

		static ValidatorAttributeExtensions()
		{
			_validatorsByAttributeType = new Dictionary<Type, PropertyValidatorBase>();
			_validatorsByAttributeType[typeof(MinValueAttribute)] = new MinValuePropertyValidator();
			_validatorsByAttributeType[typeof(MaxValueAttribute)] = new MaxValuePropertyValidator();
			_validatorsByAttributeType[typeof(RequiredAttribute)] = new RequiredPropertyValidator();
			_validatorsByAttributeType[typeof(ValidateInputAttribute)] = new ValidateInputPropertyValidator();
		}

		public static PropertyValidatorBase GetValidator(this ValidatorAttribute attr)
		{
			PropertyValidatorBase validator;
			if (_validatorsByAttributeType.TryGetValue(attr.GetType(), out validator))
			{
				return validator;
			}
			else
			{
				return null;
			}
		}
	}
}