Function isExtendedTchar

token.go:10–21

isExtendedTchar checks if c is a valid token character as defined in the spec.

(c byte)

// isExtendedTchar checks if c is a valid token character as defined in the spec.
func isExtendedTchar(c byte) bool {
	if isAlpha(c) || isDigit(c) {
		return true
	}

	switch c {
	case '!', '#', '$', '%', '&', '\'', '*', '+', '-', '.', '^', '_', '`', '|', '~', ':', '/':
		return true
	}

	return false
}

// ErrInvalidTokenFormat is returned when a token format is invalid.
var ErrInvalidTokenFormat = errors.New("invalid token format")