Function IsHexDigit

pkg/sql/lexbase/predicates.go:29–33

IsHexDigit returns true if the character is a valid hexadecimal digit.

(ch int)

// IsHexDigit returns true if the character is a valid hexadecimal digit.
func IsHexDigit(ch int) bool {
	return (ch >= '0' && ch <= '9') ||
		(ch >= 'a' && ch <= 'f') ||
		(ch >= 'A' && ch <= 'F')
}

// reservedOrLookaheadKeywords are the reserved keywords plus those keywords for
// which we need one token of lookahead extra to determine their token type.