VersionTLS13,
	VersionTLS12,
	VersionTLS11,
	VersionTLS10,
}

// roleClient and roleServer are meant to call supportedVersions and parents
// with more readability at the callsite.
const roleClient = true
const roleServer = false

var tls10server = godebug.New("tls10server")

func (c *Config) supportedVersions(isClient bool) []uint16 {

		// embedded, possibly instantiated type
		typ = x
		if p.tok == token.LBRACK {
			// embedded instantiated interface
			typ = p.parseTypeInstance(typ)
		}
	}

	// Comment is added at the callsite: the field below may joined with
	// additional type specs using '|'.
	// TODO(rfindley) this should be refactored.
	// TODO(rfindley) add more tests for comment handling.

	case OpCapture, OpStar:
		// star can be 1+ or 2+; assume 2 pessimistically
		size = 2 + p.calcSize(re.Sub[0], false)
	case OpPlus, OpQuest:
		size = 1 + p.calcSize(re.Sub[0], false)
	case OpConcat:
		for _, sub := range re.Sub {
			size += p.calcSize(sub, false)
		}
	case OpAlternate:
		for _, sub := range re.Sub {
			size += p.calcSize(sub, false)
		}
		if len(re.Sub) > 1 {
			size += int64(len(re.Sub)) - 1
		}

}

func (t *Type) Size() int64 {
	if t.kind == TSSA {
		if t == TypeInt128 {
			return 16
		}
		return 0
	}
	CalcSize(t)
	return t.width
}

func (t *Type) Alignment() int64 {
	CalcSize(t)
	return int64(t.align)
}

func (t *Type) SimpleString() string {
	return t.kind.String()
}

// Cmp is a comparison between values a and b.