System.Linq.Dynamic.ExpressionParser.SelfMethod C# (CSharp) Method

		private Maybe<Expression> SelfMethod(Type type, Expression instance, int errorPos, string id, Lazy<Expression[]> args)
		{
			MethodBase mb;
			switch (GetAppropriateMethodCount(type, id, instance == null, args.Value, out mb))
			{
				case 0:
					return Maybe.Nothing;
				case 1:
					var method = (MethodInfo) mb;
					if (!IsPredefinedType(method.DeclaringType))
					{
						if (!method.DeclaringType.IsEnum)
							throw ParseError(errorPos, Res.MethodsAreInaccessible(GetTypeName(method.DeclaringType)));
					}
					if (method.ReturnType == typeof(void))
						throw ParseError(errorPos, Res.MethodIsVoid(id, GetTypeName(method.DeclaringType)));
					return Expression.Call(instance, method, args.Value);
				default:
					return Maybe.Nothing;
			}
		}