using System;

namespace UnityEngineInternal
{
	public enum TypeInferenceRules
	{
		/// <summary>
		/// (typeof(T)) as T
		/// </summary>
		TypeReferencedByFirstArgument,

		/// <summary>
		/// (, typeof(T)) as T
		/// </summary>
		TypeReferencedBySecondArgument,

		/// <summary>
		/// (typeof(T)) as (T)
		/// </summary>
		ArrayOfTypeReferencedByFirstArgument,

		/// <summary>
		/// (T) as T
		/// </summary>
		TypeOfFirstArgument,
	}

	/// <summary>
	/// Adds a special type inference rule to a method.
	/// </summary>
	[Serializable]
	[AttributeUsage(AttributeTargets.Method)]
	public class TypeInferenceRuleAttribute : Attribute
	{
		private readonly string _rule;

		public TypeInferenceRuleAttribute(TypeInferenceRules rule)
			: this(rule.ToString())
		{
		}

		public TypeInferenceRuleAttribute(string rule)
		{
			_rule = rule;
		}

		public override string ToString()
		{
			return _rule;
		}
	}
}