case 'a':
			ret = &Name{Name: "auto"}
		case 'c':
			ret = &Name{Name: "decltype(auto)"}

		case 'f':
			ret = &BuiltinType{Name: "decimal32"}
		case 'd':
			ret = &BuiltinType{Name: "decimal64"}
		case 'e':
			ret = &BuiltinType{Name: "decimal128"}
		case 'h':
			ret = &BuiltinType{Name: "half"}
		case 'u':
			ret = &BuiltinType{Name: "char8_t"}
		case 's':